Page 1
Part No. G-061875-00
Rev. B
October 2009
M
anual Name:
700 Seri
l
Part Rev Date: G-061875-00 Rev. B (10/09)
es Ventilator System Service Manua
700 Series
....................
Ventilator Systems
Service Manual
Service Manual
Page 2
Copyright Information
Copyright 2010 Nellcor Puritan Bennett, LLC. All rights reserved. The 740and 760Ventilator Systems
are manufactured in accordance with Nellcor Puritan Bennett proprietary information, covered by one
or more of the following U.S. Patents and foreign equivalents: 5,524,615; 5,540,222; 5,596,984;
5,632,270; 5,664,560; and 5,673,689.
The information contained in this manual is the sole property of Nellcor Puritan Bennett Inc. and may
not be duplicated without permission. This manual may be revised or replaced by Nellcor Puritan
Bennett Inc. at any time and without notice. You should ensure you have the most current applicable
version of this manual; if in doubt, contact the Technical Communications Department of Nellcor
Puritan Bennett Inc. or call Technical Support at 1.800.255.6774, or contact your product representative.
While the information set forth herein is believed to be accurate, it is not a substitute for the exercise of
professional judgment.
The ventilator should be operated and serviced only by trained professionals. Nellcor Puritan Bennett’s
sole responsibility with respect to the ventilator, and its use, is as stated in the limited warranty provided.
Nothing in this manual shall limit or restrict in any way Nellcor Puritan Bennett’s right to revise or
otherwise change or modify the equipment (including its software) described herein, without notice. In
the absence of an express, written agreement to the contrary, Nellcor Puritan Bennett Inc. has no
obligation to furnish any such revisions, changes, or modifications to the owner or user of the
equipment (including its software) described herein.
Trademarks
Nellcor Puritan Bennett, PTS 2000, Breathlab, 700 Series, 740, and 760 are registered
trademarks of Nellcor Puritan Bennett Inc.
Addresses
Manufacturer
Nellcor Puritan Bennett Ireland
Mervue,
Galway,
Ireland
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700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
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Warning
Caution
Warning
Warning
Preface
This manual is intended to provide information needed to service the Nellcor
Puritan Bennett 700 Series Ventilator Systems. It is intended for use by certified
biomedical engineering technicians or personnel with equivalent experience and
training in servicing this type of equipment. The user should complete the Nellcor
Puritan Bennett training class geared specifically to the 740 or 760 Ventilator
System.
While this manual covers the ventilator configurations currently supported by
Nellcor Puritan Bennett, it may not be all-inclusive and may not be applicable to
your ventilator. Within the USA, contact Nellcor Puritan Bennett at
1-(800)-635-5267 for questions about the applicability of the information.
Definitions
This manual uses three special indicators to convey information of a specific
nature. They include:
Indicates a condition that can endanger the patient or the ventilator operator.
Indicates a condition that can damage the equipment.
NOTE:
Indicates points of particular emphasis that make operation of the ventilator more
efficient or convenient.
Warnings, cautions, and notes
Please take the time to become familiar with the following, as they cover safety
considerations, special handling requirements, and regulations that govern the use
of the 700 Series Ventilator Systems.
To ensure proper servicing and avoid the possibility of physical injury, only
qualified personnel should attempt to service or make authorized modifications to
the ventilator.
The user of this product shall have sole responsibility for any ventilator
malfunction due to operation or maintenance performed by anyone not trained
by Nellcor Puritan Bennett staff.
To avoid an electrical shock hazard while servicing the ventilator, be sure to
remove all power to the ventilator by disconnecting the power source and
turning off all ventilator power switches.
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G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
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Warning
To avoid a fire hazard, keep matches, lighted cigarettes, and all other sources of
Warning
Warning
Caution
Caution
Caution
Caution
ignition (e.g., flammable anesthetics and/or heaters) away from the 700 Series
Ventilator System and oxygen hoses.
Do not use oxygen hoses that are worn, frayed, or contaminated by combustible
materials such as grease or oils. (Textiles, oils, and other combustibles are easily
ignited and burn with great intensity in air enriched with oxygen.)
In case of fire or a burning smell, immediately disconnect the ventilator from the
oxygen supply and electrical power source.
Patients on life-support equipment should be appropriately monitored by
competent medical personnel and suitable monitoring devices.
The 700 Series Ventilator System is not intended to be a comprehensive
monitoring device and does not activate alarms for all types of dangerous
conditions for patients on life-support equipment.
An alternative source of ventilation should always be available when using the
700 Series Ventilator System.
For a thorough understanding of ventilator operations, be sure to read the
700 Series Ventilator System Operator’s Manual in its entirety before attempting to
use the system.
Before activating any part of the ventilator, be sure to check the equipment for
proper operation and, if appropriate, run the self-diagnostic programs described
in Chapter 3.
Federal law (US) restricts the sale of this device to, or by the order of, any
physician.
Check the ventilator periodically as outlined in the service manual; do not use if
defective. Immediately replace parts that are broken, missing, obviously worn,
distorted, or contaminated.
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Warranty
The 700 Series Ventilator System is warranted against defects in material and
workmanship in accordance with Nellcor Puritan Bennett Medical Equipment
Warranty for a period of one year from the time of sale. To ensure the validity of the
warranty, be sure to keep a maintenance record.
Year of manufacture
The 700 Series Ventilator System’s year of manufacture is indicated by the fifth and
sixth digits of the serial number located at the lower edge of the ventilator front
panel.
Manufacturer
Nellcor Puritan Bennett Ireland Ltd.
Mervue, Galway
Ireland
Electromagnetic susceptibility
The 700 Series Ventilator System complies with the requirements of IEC 601-1-2
(EMC Collateral Standard), including the E-field susceptibility requirements at a
level of 10 volts per meter, at frequencies from 26 MHz to 1 GHz, and the ESD
requirements of this standard. However, even at this level of device immunity,
certain transmitting devices (cellular phones, walkie-talkies, cordless phones,
paging transmitters, etc.) emit radio frequencies that could interrupt ventilator
operation if located in a range too close to the ventilator. It is difficult to determine
when the field strength of these devices becomes excessive. Practitioners should be
aware radio frequency emissions are additive, and the ventilator must be located a
sufficient distance from transmitting devices to avoid interruption. Do not operate
the ventilator in a magnetic resonance imaging (MRI) environment. Chapter 7
describes possible ventilator alarms and what to do if they occur. Consult with your
institution’s biomedical engineering department in case of interrupted ventilator
operation, and before relocating any life support equipment.
Customer assistance
For further assistance contact your local Nellcor Puritan Bennett representative.
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
v
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Symbols and labels
SN
IPX1
These symbols and labels appear on the 700 Series Ventilator System:
Power switch positions per IEC 601-1. ”I” represents ON position;
“O” represents OFF position.
Refer to manual per IEC 601-1. When this symbol appears on
product, it means “Refer to documentation for information.”
Potential equalization point, per IEC 601-1
External battery connection
Circuit breaker
Serial number
ac current
Type B equipment, per IEC 601-1
Indicates the degree of protection provided by enclosure
(drip-proof).
Signifies compliance with the Medical Device Directive, 2007/47/
EC.
CSA and NRTL (Nationally Recognized Testing Laboratory)
certification, granted by CSA
The TUV Rheinland logo signifies TUV Rheinland Type Test approval
to Annex III of the Medical Device Directive
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700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
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.
EXHAUST
!
TO
PATIENT
FROM
PATIENT
O
2
! 40 - 90 psi
(275 - 620 kPa)
Use 50 psi (345 kPa)
V
max
= 160 L/min
(at STPD)
WARNING:
AIR INTAKE - DO NOT OBSTRUCT. Filter located behind panel.
Replace filter every 1,000 running hours or every 3 months,
whichever occurs first. Consult operator’s manual for complete
instructions.
!
CAUTION:
COOLING FAN- DO NOT OBSTRUCT.
Filter located behind panel. Clean or replace filter as
required every 250 running hours or every month,
whichever occurs first. Consult operator’s manual
for complete instructions.
!
WARNING:
This ventilator is not intended to be a comprehensive monitoring device: some
types of dangerous conditions will not activate alarms. Patients on life-support
equipment should be appropriately monitored by competent medical personnel
and suitable monitoring devices.
WAR NING:
Before use, read operator’s manual thoroughly. Before each use, check
equipment for proper operation.
!
!
Exhaust port connector
Inspiratory limb connector
Expiratory limb connector
Oxygen inlet port label
Air intake label
Cooling fan label
General life support equipment warning label
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
vii
Page 8
Back panel label (740)
7-00311
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7-00312
Back panel label (760)
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
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This page is intentionally blank.
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Contents
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1 General information
1.1 How to use this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.3 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.4 Configuration information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.7 Manufacturer’s Declaration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1.8 Tools, equipment, and service materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1.9 Periodic maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
1.10 Service kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
1.11 Controls and indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
1.11.1 Ventilator Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
1.11.2 Patient Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
1.11.3 Ventilator Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
1.12 Location of ventilator serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
1.13 Determining software revision. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
1.14 Service philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
1.15 Reference documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
2 Theory of operation
2.1 Overview of ventilator operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.2.1 Gas Inlet System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.2.1.1 Gas inlet system components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.2.1.2 System operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.2.2 Piston/cylinder system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.2.2.1 Component descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.2.2.2 Operational description of piston/cylinder system . . . . . . . . . . . . . 2-16
2.2.3 Inspiration manifold system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
2.2.3.1 Component descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
2.2.3.2 Operational description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2.2.4 Patient system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
2.2.5 Exhalation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
2.2.5.1 Component descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
2.2.5.2 Operational description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
2.2.6 PEEP/CPAP system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.2.6.1 Component descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.2.6.2 System operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
2.3 Electrical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
2.3.1 Power assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
2.3.1.1 Power input section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
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2.3.1.2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
2.3.1.3 Battery backup (BBU) PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
2.3.1.4 Power supply fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
2.3.2 Internal battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
2.3.3 External battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
2.3.4 Pressure solenoid PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
2.3.5 Backup alarm driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51
2.3.6 Controller PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51
2.3.7 User interface (UI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
2.3.8 Miscellaneous electronic parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
2.3.8.1 Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
2.3.8.2 Piezo alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
2.3.8.3 Main fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61
2.3.8.4 Air flow thermistor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62
2.3.8.5 Air intake filter switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64
2.4 Communications option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64
2.5 Motor control and drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64
2.6 Breath delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-65
2.6.1 Piston initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68
2.6.2 Breath triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-69
2.6.3 Gas delivery to the patient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71
2.6.4 Exhalation and piston retraction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73
2.6.4.1 Exhalation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73
2.6.4.2 Piston retraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73
2.6.4.3 Mandatory breathing with delivered volumes less than 250 ml . . . 2-74
2.7 Power source switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-79
2.8 Emergency modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-81
2.8.1 Occlusion cycling mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-81
2.8.2 Ventilator inoperative. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-82
2.8.2.1 When the VENT INOP condition is triggered . . . . . . . . . . . . . . . . . 2-82
2.8.2.2 How the ventilator responds to a VENT INOP condition . . . . . . . . 2-82
2.8.2.3 How to clear the VENT INOP condition . . . . . . . . . . . . . . . . . . . . . 2-82
2.8.3 Safety valve open (SVO). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-83
3Self-tests
xii
3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Power-on self-test (POST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2.1 Structure of POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2.2 Running POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2.3 How the ventilator responds to a POST error . . . . . . . . . . . . . . . . . . . . . 3-2
3.3 Short self-test (SST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.4 Extended self-test (EST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.4.1 When to run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.4.2 Hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.4.3 Running EST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.4.4 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
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3.5 Ongoing checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
4 Service and utility functions
4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.1 Accessing the service or utilities functions . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.2 Summary of functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.3 Navigating the Service and Utilities menus . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.4 About the test and alert logs and EST test results . . . . . . . . . . . . . . . . . . 4-4
4.2 Service functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.2.1 Sensor data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.2.2 EST (Extended self-test) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.2.3 Diagnostics/Calib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.2.3.1 Enable serial port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.2.3.2 Run tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.2.3.3 Clear test log: Erasing the test log . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
4.2.3.4 Clear alert log: Erasing the alert log . . . . . . . . . . . . . . . . . . . . . . . . 4-22
4.2.3.5 Update constants: Manually inputting calibration constants
into NVRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
4.2.3.6 Review constants: Viewing calibration constants in NVRAM . . . . . . 4-23
4.2.3.7 Reset service data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
4.2.4 Review alert log: Reading the alert log . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
4.2.5 Test data: Reading the test log or EST test results . . . . . . . . . . . . . . . . . 4-25
4.2.5.1 Review test log: Reading the test log . . . . . . . . . . . . . . . . . . . . . . . 4-26
4.2.5.2 Review EST tests: Reading pass/fail status of EST tests . . . . . . . . . . . 4-26
4.3 Utilities functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
4.3.1 Pressure format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
4.3.2 Date and time format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
5 Performance verification
5.1 When to run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2 Tools, test equipment, and service materials . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.3 Preliminary ventilator cleaning and inspection. . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.4 Preliminary ventilator setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.5 Preliminary pneumatic test equipment setup. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.6 Performance verification procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.6.1 Electrical safety test and power-on self-test (POST) (Test 1). . . . . . . . . . . 5-5
5.6.2 Rotary encoder test (Test 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.6.3 Battery test (Test 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.6.3.1 External/internal battery test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5.6.3.2 Internal battery test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5.6.4 Backup alarm test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5.6.5 Supply voltage test (Test 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.6.6 Gas volume accuracy, breath timing, and PEEP system test
(Test 5), using the PTS 2000 and Breathlab software . . . . . . . . . . . . . . 5-10
5.6.7 Extended self-test (EST) (Test 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.6.8 Oxygen accuracy test (Test 7) using the PTS 2000 . . . . . . . . . . . . . . . . 5-15
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5.6.9 High pressure alarm test (Test 8) using the PTS 2000 . . . . . . . . . . . . . . 5-18
5.6.10 Safety valve test (Test 9). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
5.7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
6 Diagnostic codes
6.1 How to use this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2 About software errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.3 About ventilator status (13000 series) codes . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.4 List of codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.4.1 Error code 1101 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.4.2 Error code 06027 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.4.3 Error code 09169 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
7 Alarm messages
7.1 Alarm classifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.2 Responding to alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
8 Service and repair
8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1.1 How to use this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1.2 General repair safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1.3 General repair guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.1.4 Repair-related cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
8.1.5 Electrical cables and pneumatic tubing . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
8.1.6 Adhesive use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
8.1.7 Electrostatic discharge control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8.1.7.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8.1.7.2 Procedures and precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8.1.8 Repainting and touch-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.1.9 Replacement part ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.1.10 Post-repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.2 Patient system and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.3 Cart assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
8.3.1 Installing ventilator cart appearance kit . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
8.3.2 Removing/installing ventilator from/to cart . . . . . . . . . . . . . . . . . . . . . . 8-6
8.3.3 Removing/installing oxygen cylinder brackets . . . . . . . . . . . . . . . . . . . . 8-9
8.3.4 Removing/installing cylinder covers . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
8.3.5 Removing/installing collector vial support bracket . . . . . . . . . . . . . . . . 8-10
8.3.6 Removing/installing humidifier support bracket . . . . . . . . . . . . . . . . . 8-10
8.3.6.1 Fisher & Paykel humidifier support bracket . . . . . . . . . . . . . . . . . . 8-10
8.3.6.2 Hudson RCI humidifier support bracket assembly . . . . . . . . . . . . . 8-10
8.3.7 Removing/installing basket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
8.3.8 Removing/installing external battery and cover . . . . . . . . . . . . . . . . . . 8-12
8.4 Shelf mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13
8.4.1 Removing/installing ventilator from/to shelf mount . . . . . . . . . . . . . . . 8-13
8.4.2 Removing/installing collector vial support bracket . . . . . . . . . . . . . . . . 8-14
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8.4.3 Removing/installing humidifier support bracket . . . . . . . . . . . . . . . . . . 8-14
8.5 User interface (UI) assembly (lid) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15
8.5.1 Opening and propping lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15
8.5.2 Removing/installing lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15
8.5.3 Knob and rotary encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
8.5.4 UI display PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
8.5.5 LCD panel (message window) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-19
8.5.6 Keyboard assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
8.6 Ventilator head cabinet assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
8.6.1 Oxygen adapter assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
8.6.2 Options panel plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
8.6.3 Communications option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
8.6.3.1 Remote alarm harness and connector . . . . . . . . . . . . . . . . . . . . . . . 8-24
8.6.3.2 Nebulizer harness and connector . . . . . . . . . . . . . . . . . . . . . . . . . . 8-25
8.6.3.3 Nurse call (central station) harness and connector . . . . . . . . . . . . . 8-25
8.6.3.4 Serial (RS-232) port hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-26
8.6.3.5 Communications option PCB assembly . . . . . . . . . . . . . . . . . . . . . 8-26
8.6.3.6 Communications option plate assembly . . . . . . . . . . . . . . . . . . . . . 8-27
8.6.3.7 Communications option ribbon cable . . . . . . . . . . . . . . . . . . . . . . 8-27
8.6.4 Air intake cover and filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28
8.6.5 Air flow thermistor assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-29
8.6.6 Oxygen fitting, inspiration access panel, and air intake
manifold assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-29
8.6.7 Air intake filter switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-32
8.6.8 Flex arm mounting block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-32
8.6.9 Removing/installing cabinet assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 8-32
8.7 Oxygen regulator, oxygen solenoid, mixing manifold, and cylinder
inlet check valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-33
8.7.1 Removing oxygen regulator, oxygen solenoid, mixing manifold, and
cylinder inlet check valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-34
8.7.2 Installing oxygen regulator, oxygen solenoid assembly,
mixing manifold, and cylinder inlet check valve . . . . . . . . . . . . . . . . . . 8-36
8.7.3 Oxygen regulator pressure transducer . . . . . . . . . . . . . . . . . . . . . . . . . 8-37
8.8 Inspiration manifold assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-38
8.8.1 Oxygen sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-38
8.8.2 Inspiration manifold thermistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-40
8.8.3 Safety valve assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-40
8.8.4 Removing/installing inspiration manifold assembly . . . . . . . . . . . . . . . . 8-40
8.9 Exhalation assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-42
8.9.1 Exhalation assembly cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-42
8.9.2 Exhalation heater and thermistor assemblies. . . . . . . . . . . . . . . . . . . . . 8-43
8.9.2.1 Removing exhalation heater and thermistor assemblies . . . . . . . . . 8-43
8.9.2.2 Installing exhalation heater and thermistor assemblies . . . . . . . . . . 8-44
8.9.3 Exhalation assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-45
8.9.4 Exhalation check valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-46
8.9.5 Exhalation valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-47
8.9.6 Exhalation flow sensor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-47
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8.10 Cable management bar, PCBs, speaker, and piezo alarm . . . . . . . . . . . . . . . 8-48
8.10.1 Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-48
8.10.2 Piezo alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-49
8.10.3 Pressure solenoid PCB and controller PCB . . . . . . . . . . . . . . . . . . . . . 8-49
8.10.3.1 Removing/installing pressure solenoid PCB . . . . . . . . . . . . . . . . . 8-49
8.10.3.2 Removing/installing backup alarm PCB . . . . . . . . . . . . . . . . . . . . 8-50
8.10.3.3 Determine PSOL PCB revision . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-50
8.10.3.4 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-51
8.10.3.5 Removing/installing controller PCB . . . . . . . . . . . . . . . . . . . . . . . 8-53
8.10.3.6 Removing/installing software EPROMs . . . . . . . . . . . . . . . . . . . . . 8-53
8.10.3.7 Removing/installing NVRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-54
8.10.3.8 Updating NVRAM data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-55
8.10.4 Cylinder and exhalation pressure transducer autozero solenoids . . . . 8-57
8.10.5 Cable management bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-57
8.11 PEEP pump and reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-58
8.11.1 PEEP pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-58
8.11.2 PEEP reservoir and filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-58
8.11.3 Exhalation solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-59
8.12 Piston/cylinder and motor/encoder assemblies . . . . . . . . . . . . . . . . . . . . . . . 8-60
8.12.1 Optoswitches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-60
8.12.2 Removing/installing piston/cylinder and motor/encoder assemblies. . 8-61
8.12.3 Greasing rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-62
8.12.4 Meshing motor pinion gear with rack . . . . . . . . . . . . . . . . . . . . . . . . 8-62
8.13 Ventilator rear components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-67
8.13.1 Main fan and filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-67
8.13.2 Internal battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-67
8.14 Power assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-69
8.14.1 Power cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-69
8.14.2 Removing power assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-69
8.14.3 Line filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-70
8.14.4 Circuit breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-71
8.14.5 Power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-71
8.14.6 External battery harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-72
8.14.7 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-73
8.14.8 Power supply fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-77
8.14.9 BBU PCB and heatsink bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-78
8.14.9.1 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-79
8.15 Harnesses and wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-79
8.15.1 Main ventilator head harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-79
9Parts list
xvi
9.1 How to use this parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9.2 700 Series Ventilator System patient system and accessories parts list . . . . . . 9-3
9.3 Oxygen hose assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
9.4 Flex arm assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
9.5 Ventilator major assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
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9.6 Cart assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
9.7 Shelf mounting kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18
9.8 User interface (UI) assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-20
9.9 Ventilator head assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-23
9.10 Oxygen hose adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31
9.11 Label kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-33
9.12 Inspiration manifold assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
9.13 Oxygen regulator and oxygen solenoid assembly . . . . . . . . . . . . . . . . . . . . . 9-37
9.14 Exhalation assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-39
9.15 Cable management bar, PCBs, speaker, and piezo alarm . . . . . . . . . . . . . . . 9-42
9.16 PEEP pump and reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-47
9.17 Piston/cylinder and motor/encoder assemblies . . . . . . . . . . . . . . . . . . . . . . . 9-49
9.18 Ventilator rear components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-53
9.19 Power assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-55
9.20 Power cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-61
9.21 Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-63
9.22 Harnesses and wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-65
9.23 15,000-hour preventive maintenance kit . . . . . . . . . . . . . . . . . . . . . . . . . . 9-68
9.24 30,000-hour preventive maintenance kit . . . . . . . . . . . . . . . . . . . . . . . . . . 9-69
9.25 Oxygen sensor assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-70
9.26 Communications option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-70
9.27 760 Ventilator assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-70
A Alphabetic part index
B Numeric parts index
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xviii
Page 19
.
Figures
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Figure 1-1. 700 Series Ventilator System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Figure 1-2. Controls and indicators on 740 Ventilator keyboard . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Figure 1-3. Controls and indicators on 760 Ventilator keyboard . . . . . . . . . . . . . . . . . . . . . . . . 1-22
Figure 2-1. 700 Series Ventilator System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Figure 2-2. Pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Figure 2-3. Gas inlet system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Figure 2-4. Gas inlet system (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Figure 2-5. Gas inlet system components (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Figure 2-6. Piston/cylinder system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Figure 2-7. Piston/cylinder system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Figure 2-8. Piston/cylinder system components (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Figure 2-9. Motor/encoder pinion gear and rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Figure 2-10. Operation of optical encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Figure 2-11. Inspiration manifold system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Figure 2-12. Inspiration manifold system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Figure 2-13. Inspiration manifold system components (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Figure 2-14. Patient system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Figure 2-15. Patient system components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Figure 2-16. Exhalation system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
Figure 2-17. Exhalation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Figure 2-18. Exhalation system components (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
Figure 2-19. PEEP/CPAP system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
Figure 2-20. PEEP/CPAP system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
Figure 2-21. PEEP/CPAP system components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
Figure 2-22. Main ventilator head harness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
Figure 2-23. 700 Series Ventilator System block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
Figure 2-24. Wiring diagram (1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
Figure 2-25. Power assembly (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
Figure 2-26. Power assembly harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
Figure 2-27. Power supply/ventilator head harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
Figure 2-28. Power input components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
Figure 2-29. Power supply with harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
Figure 2-30. BBU PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
Figure 2-31. BBU PCB and fan installed in power assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
Figure 2-32. Power supply fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
Figure 2-33. Internal battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
Figure 2-34. Internal battery and main fan installed in ventilator . . . . . . . . . . . . . . . . . . . . . . . . 2-47
Figure 2-35. External battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
Figure 2-36. Pressure solenoid PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50
Figure 2-37. Pressure solenoid and controller PCBs installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50
Figure 2-38. Controller PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
Figure 2-39. EPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
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Figure 2-40. User interface (UI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57
Figure 2-41. UI display PCB (740 shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
Figure 2-42. 4-line x 20-character LCD panel (message window) . . . . . . . . . . . . . . . . . . . . . . . . 2-58
Figure 2-43. Keyboard assembly (740 shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
Figure 2-44. Rotary encoder with knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
Figure 2-45. Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
Figure 2-46. Piezo alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61
Figure 2-47. Speaker, piezo alarm, air flow thermistor assembly, and air
intake filter switch installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61
Figure 2-48. Main fan with cover, filter, and guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62
Figure 2-49. Air flow thermistor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62
Figure 2-50. Air flow thermistor assembly installed on air intake manifold . . . . . . . . . . . . . . . . . 2-63
Figure 2-51. Air intake filter switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64
Figure 2-52. Motor control and drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-65
Figure 2-53. Breath cycle for a VCV breath without PEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66
Figure 2-54. Breath cycle for a PCV breath . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-67
Figure 2-55. Piston initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68
Figure 2-56. Pneumatic diagram of breath triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70
Figure 2-57. Breath triggering and breath delivery parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71
Figure 2-58. Pneumatic diagram of gas delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72
Figure 2-59. Pneumatic diagram of exhalation and piston retraction (low-flow
oxygen solenoid energized)2-75
Figure 2-60. Exhalation and piston retraction parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-76
Figure 2-61. Air and oxygen flow during retraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-77
Figure 2-62. Piston movement for volumes <250 ml . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-78
Figure 2-63. Power source switchover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-80
Figure 2-64. Safety valve open pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-84
Figure 4-1. Navigating the Service and Utilities menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Figure 4-3. Oxygen regulator pressure transducer calibration setup . . . . . . . . . . . . . . . . . . . . . 4-13
Figure 4-4. PEEP pump calibration setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Figure 4-5. P
Figure 4-6. Adjusting oxygen regulator pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Figure 4-7. Test and alert log format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Figure 5-1. Power supply/reference voltage test connector J2 on pressure solenoid PCB . . . . . . 5-9
Figure 5-2. PTS 2000 Setup for Test 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Figure 8-1. Removing ventilator attachment screws from cart . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Figure 8-2. Removing ventilator from cart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
Figure 8-3. Removing oxygen cylinder brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
Figure 8-4. Removing collector vial and Fisher & Paykel Humidifier support brackets from cart 8-10
Figure 8-5. Removing Hudson RCI humidifier bracket assembly . . . . . . . . . . . . . . . . . . . . . . . . 8-11
Figure 8-6. Removing basket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
Figure 8-7. Removing external battery cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
Figure 8-8. Removing collector vial and humidifier support brackets from shelf mount . . . . . . 8-13
Figure 8-9. Removing shelf mount from ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
Figure 8-10. Lid raised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
Figure 8-11. Propping the lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
gain equalization setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
e Pcyl
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Figure 8-12. UI removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
Figure 8-13. Removing LCD panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-19
Figure 8-14. Spacers on keyboard assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
Figure 8-15. Oxygen adapter assemblies disassembled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Figure 8-16. Options panel plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
Figure 8-17. 700 Series Communications option panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Figure 8-18. Removing Communications option assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24
Figure 8-19. Disassembling Communications option assembly
(remote alarm, nebulizer, nurse call, and serial port hardware) . . . . . . . . . . . . . . . . 8-25
Figure 8-20. Removing harnesses/connectors from
Communications option assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-26
Figure 8-21. Removing the Communications option
PCB assembly from the option plate assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-27
Figure 8-22. Inspiration access panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28
Figure 8-23. Air flow thermistor assembly installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-29
Figure 8-24. Inspiration access panel removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-30
Figure 8-25. Air intake manifold assembly disassembled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-31
Figure 8-26. Flex arm mounting block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-32
Figure 8-27. Removing oxygen regulator/oxygen solenoid assembly . . . . . . . . . . . . . . . . . . . . . 8-34
Figure 8-28. Separating the oxygen solenoid assembly from the oxygen regulator . . . . . . . . . . . 8-35
Figure 8-29. Cylinder check valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-36
Figure 8-30. Oxygen regulator pressure transducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-38
Figure 8-31. Inspiration manifold assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-39
Figure 8-32. Oxygen sensor with and without adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-39
Figure 8-33. Removing inspiration manifold assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-41
Figure 8-34. Exhalation assembly cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-42
Figure 8-35. Exhalation assembly installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-43
Figure 8-36. Exhalation heater and thermistor assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-44
Figure 8-37. Threading thermistor through flow sensor heater clip . . . . . . . . . . . . . . . . . . . . . . . 8-45
Figure 8-38. Exhalation assembly, speaker, and piezo alarm mounting . . . . . . . . . . . . . . . . . . . . 8-46
Figure 8-39. Exhalation check valve in position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-47
Figure 8-40. Cable management bar, PCBs, speaker, and piezo alarm . . . . . . . . . . . . . . . . . . . . 8-48
Figure 8-41. Pressure solenoid PCB tube connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-52
Figure 8-42. Controller PCB component locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-54
Figure 8-43. Removing and installing EPROMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-56
Figure 8-44. PEEP pump and reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-59
Figure 8-45. Piston/cylinder assembly installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-60
Figure 8-46. Greasing rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-62
Figure 8-47. Gear mesh procedure: Pushing rack to end stop at delivered end . . . . . . . . . . . . . . 8-63
Figure 8-48. Gear mesh procedure: Positioning motor encoder . . . . . . . . . . . . . . . . . . . . . . . . . 8-64
Figure 8-49. Gear mesh procedure: Fasteners installed but not locked . . . . . . . . . . . . . . . . . . . . 8-64
Figure 8-50. Gear mesh procedure: Tightening screws to slightly compress spring washers . . . . 8-65
Figure 8-51. Gear mesh procedure: Pushing rack from end to end . . . . . . . . . . . . . . . . . . . . . . . 8-66
Figure 8-52. Ventilator rear components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-68
Figure 8-53. Power assembly pulled out . . . . . . . . . . . . . . .
Figure 8-54. Line filter, circuit breaker, and power switch connections . . . . . . . . . . . . . . . . . . . . 8-70
Figure 8-55. Power supply input terminal connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-70
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Figure 8-56. External battery connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-72
Figure 8-57. Power supply output terminal connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-73
Figure 8-58. Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-74
Figure 8-59. Power assembly removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-75
Figure 8-60. Power supply baffle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-76
Figure 8-61. BBU PCB and power supply fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-77
Figure 8-62. Heatsink bars and conductive strips on BBU PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . 8-78
Figure 8-63. BBU PCB attaching hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-79
Figure 8-64. Main ventilator head harness installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-80
Figure 8-65. Main ventilator head harness connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-80
Figure 9-1. 700 Series Ventilator System (on older style cart) . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Figure 9-2. Oxygen hose assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
Figure 9-3. Flex arm assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
Figure 9-4. Ventilator major assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
Figure 9-5. Cart assembly (Sheet 1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15
Figure 9-6. Shelf mounting kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19
Figure 9-7. User interface (UI) assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22
Figure 9-8. Ventilator head assembly (Sheet 1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-27
Figure 9-9. Oxygen hose adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32
Figure 9-10. Label kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34
Figure 9-11. Inspiration manifold assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36
Figure 9-12. Oxygen regulator and oxygen solenoid assembly . . . . . . . . . . . . . . . . . . . . . . . . . 9-38
Figure 9-13. Exhalation assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-40
Figure 9-14. Cable management bar, PCBs, speaker, and piezo alarm . . . . . . . . . . . . . . . . . . . . 9-44
Figure 9-15. Controller PCB component locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-45
Figure 9-16. Pressure solenoid PCB component locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-45
Figure 9-17. PEEP pump and reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-48
Figure 9-18. Piston/cylinder and motor/encoder assemblies (Sheet 1 of 2) . . . . . . . . . . . . . . . . 9-50
Figure 9-19. Ventilator rear components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-54
Figure 9-20. Power assembly (Sheet 1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-58
Figure 9-21. BBU PCB component locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-60
Figure 9-22. Power cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-62
Figure 9-23. Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-64
Figure 9-24. Wiring diagram (Sheet 1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-66
Figure 9-25. 15,000-hour preventive maintenance kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-68
Figure 9-26. 30,000-hour preventive maintenance kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-69
xxii
Page 23
.
Tables
.......................................................................................
Table 1-1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Table 1-2 Electromagnetic Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Table 1-3 Electromagnetic Immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Table 1-4 Electromagnetic Immunity-conducted and radiated RF . . . . . . . . . . . . . . . . . . . . . . . 1-12
Table 1-5 Recommended separation distances between portable and mobile
RF communications equipment and the 700 Series ventilator . . . . . . . . . . . . . . . . . 1-13
Table 1-6 Compliant cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Table 1-7 Tools, equipment, and service materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Table 1-8 Schedule of periodic maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Table 1-9 Service kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Table 1-10 700 Series Ventilator keyboards: VENTILATOR SETTINGS . . . . . . . . . . . . . . . . . . . . . . 1-24
Table 1-11 700 Series Ventilator keyboards: PATIENT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
Table 1-12 700 Series Ventilator keyboards: VENTILATOR STATUS . . . . . . . . . . . . . . . . . . . . . . . 1-34
Table 2-1 Pneumatic component data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Table 2-2 NVRAM contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54
Table 2-3 Changes to current settings in occlusion cycling mode . . . . . . . . . . . . . . . . . . . . . . . 2-81
Table 2-4 Safety valve open causes and indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-83
Table 3-1 Self-tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Table 3-2 POST routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Table 3-3 Hardware requirements for EST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Table 3-4 EST prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Table 3-5 Key functions during EST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Table 3-6 Prompts during EST testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Table 3-7 EST completion status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Table 3-8 EST tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Table 3-9 EST troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Table 4-1 Service functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Table 4-2 Utilities menu functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Table 4-3 Pressure sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Table 4-4 Temperature sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Table 4-5 Battery/BBU sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Table 4-6 UI/HW sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Table 4-7 Pressure sol sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Table 4-8 Other data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Table 4-9 Performing calibrations/Updating NVRAM Constants . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Table 5-1 When to run performance verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Table 5-2 Test equipment required for performance verification . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Table 5-3 Pressure solenoid PCB test connector (J2) voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Table 6-1 Diagnostic codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Table 7-1 How the ventilator responds to alarm conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Table 7-2 Alarm messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Table 8-1 External battery connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-72
xxiii
Page 24
.......................................................................................
Table 9-1 Abbreviations used in parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Table 9-2 Acoustic enhancement upgrade kit, Level 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
Table 9-3 Exhalation isolation kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41
xxiv
Page 25
.
M
anual Name:
700 Seri
l
Warning
Part Rev Date: G-061875-00 Rev. B (10/09)
es Ventilator System Service Manua
Chapter
General information 1
1
.......................................................................................
This chapter provides introductory information on the Nellcor Puritan Bennett
700 Series Ventilator System. It contains a description of the ventilator, including
specifications, required tools and test equipment, schedule of maintenance, and
controls and indicators.
1.1 How to use this manual
The 700 Series Ventilator System Service Manual is intended to be used in conjunction
with the 700 Series Ventilator System Operator’s Manual. Both parts are needed for
field repair of the ventilator.
In several cases, however, similar information is contained in both manuals:
• Refer to the “Maintenance” appendix of the Operator’s Manual for operator
maintenance of filters and the patient system. Refer to the “Service and repair”
chapter of the Service Manual for maintenance activities performed by the service
technician.
• Refer to the “Self-tests” chapter of the Operator’s Manual or this manual for
instructions on running short self-test (SST) and extended self-test (EST). This
manual also provides EST troubleshooting information for the qualified service
technician.
1.2 Safety
•The “Part numbers” appendix of the Operator’s Manual contains ordering
information for patient system parts. Refer to the “Parts list” chapter of the
Service Manual for complete part ordering information.
• To prevent personal injury or death, do not attempt any ventilator service while
a patient or other person is connected to the ventilator.
• To prevent disease transmission, use personal protective equipment when
handling contaminated bacterial filters or other patient accessories. Use
Cavicide to kill bloodborne pathogens, as required.
Ventilator maintenance may involve exposure to hazardous materials, equipment,
and conditions such as: possible electrical shock; pressurized gas; transmittable
diseases; and fire, which could result from an oxygen-enriched environment and
easily ignitable material. Before servicing the 700 Series Ventilator System, be aware
of possible hazards and necessary precautions to be taken.
• Familiarize yourself with the warnings and cautions on the ventilator labels
and in related publications, including this manual. Also familiarize yourself
with any warnings and cautions associated with the service equipment and
materials being used, as well as those posted in the facility where the ventilator
is serviced.
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
1-1
Page 26
1 General information
.......................................................................................
• Use any applicable personal protective equipment and adhere to the applicable
warnings and cautions.
• Be aware of the safety standards and considerations specific to your
situation. Safety standards may vary with international, federal, state, and local
regulatory agencies. When in doubt, consult material safety data sheets;
environmental, health, and safety professionals; and regulatory affairs
specialists. In addition, many facilities and institutions may have their own
special safety considerations.
• Be sure the ventilator passes the performance verification (Chapter 5)
before it is returned to operation after being serviced. The performance
verification ensures the product’s safety in addition to its functional integrity.
1.3 General description
The 700 Series Ventilator System (including the 740 and 760 Ventilators) provides
respiratory support for a wide range of pediatric to adult patients for a wide variety
of clinical conditions. The ventilator’s mixing technique allows it to ventilate
critically ill patients at adjustable oxygen concentrations without the need for a
blender, compressor, or hospital-grade wall air.
The 700 Series Ventilator System can be mains or battery powered. Each ventilator
includes two microcontrollers: one for breath delivery (which controls ventilation),
and one for the user interface (which monitors ventilator and patient data). Each
microcontroller verifies that the other is functioning properly. Using two
independent microcontrollers in this fashion prevents a single fault from causing a
simultaneous failure of controlling and monitoring functions.
The 700 Series Ventilator System supplies mandatory or spontaneous breaths with a
piston-based pneumatic system. Mandatory breaths can be volume control ventilation
(VCV, available on 740 and 760 Ventilators) or pressure control ventilation (PCV,
available on the 760 Ventilator only). VCV delivers breaths to the patient at a preset
tidal volume, peak flow, waveform, and oxygen concentration at a minimum
respiratory rate. PCV delivers breaths to the patient at a preset inspiratory pressure,
I:E ratio or inspiratory time, rise time factor (how quickly inspiratory pressure rises
to achieve the set inspiratory pressure), and oxygen concentration at a minimum
respiratory rate. A spontaneous breath allows the patient inspiratory flows of up to
300 L/min, with or without pressure support ventilation (PSV). On the 760 Ventila tor,
you can set the rise time factor and exhalation flow sensitivity (that is, the point at
which the ventilator cycles from inspiration to exhalation) in PSV.
The ventilator begins apnea ventilation if no patient- or operator-initiated breath is
delivered within the operator-selected apnea interval. Apnea ventilation is available
in all modes (for ventilators equipped with software Rev. J or later). On the 740
Ventilator, only VCV breaths are available in apnea ventilation. On the 760
Ventilator, VCV or PCV breaths are available in apnea ventilation.
1-2
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 27
General information 1
760 Ventilator System
740 Ventilator System
740 Ventilator
760 Ventilator
.......................................................................................
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 1-1. 700 Series Ventilator System
1-3
Page 28
1 General information
.......................................................................................
1.4 Configuration information
The 700 Series Ventilator System is available in a variety of versions, intended to
meet differing needs and regulations throughout the world. The major differences
in configuration among ventilators are listed below:
• Language. Keyboard (user interface) and other ventilator labeling available in
assorted languages.
• Electrical requirements. Available in 110 V and 230 V.
• Power cord. A variety of plug ends available.
• Oxygen fitting and hose. Available in DISS (diameter index safety standard)
male and female, NIST (non-interchangeable screw thread), Australian type, Air
Liquide, and Dräger.
• Mounting. Cart or shelf mount available.
• Accessories. Ventilators may have the accessories listed in Section 1.5.
1.5 Accessories
The following accessories are either required or can be used with the ventilator.
Ventilator breathing circuit. A variety of reusable Nellcor Puritan Bennett circuits,
adult and pediatric, with and without water traps, and with and without heated
wire, is available. Contact your Nellcor Puritan Bennett representative. In addition,
other breathing circuits may be used with the ventilator, provided they ensure that
the ventilator breathing system meets the specifications stated in Table 1-1 (see
Results of ventilator breathing system testing).
Humidification device. The 700 Series Ventilator supports use of an optional
humidification device, including a heated humidifier, heat and moisture exchanger
(HME), or heated wire. A Fisher & Paykel MR730 Humidifier is available for the
ventilator. Mounting brackets are available for the Fisher & Paykel humidifiers and
the Hudson RCI ConchaTherm Humidifier.
1.6 Specifications
Ventilator specifications are listed in Table 1-1.
Table 1-1 Specifications
Physical characteristics
Weight Ventilator only: 30 kg (66 lb)
Cart only: 18 kg (40 lb)
External battery: 12.75 kg (28 lb)
Dimensions Ventilator only: 378 mm high x 515 mm wide x 370 mm deep
(14.9 in. high x 20.3 in. wide x in. 14.6 in. deep)
Ventilator and cart: 1255 mm high x 515 mm wide x 370 mm deep
(49.4 in. high x 20.3 in. wide x 14.6 in. deep)
Environmental requirements
Temperature Operating: 5 to 45C (41 to 113F) at 10 to 95% relative humidity
Storage: -40 to 60C (-40 to 140F) at 10 to 95% relative humidity
Atmospheric pressure Operating: 8.7 to 16.0 psi (600 to 1100 hPa)
Storage: 7.3 to 16.0 psi (500 to 1100 hPa)
1-4
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 29
General information 1
Warning
.......................................................................................
Table 1-1 Specifications (continued)
Altitude Operating: Up to 4570 m (15,000 ft)
Storage: Up to 15,240 m (50,000 ft)
Storage Maintain under conditions listed above. Remove batteries from ventilator before
storage. See “Electrical specifications, Battery shelf life when charge is not
maintained” for battery life details.
Pneumatic specifications
Oxygen inlet supply Pressure: 40 to 90 psi (275 to 620 kPa)
Flow: Maximum of 160 L/min at standard temperature and pressure, dry (STPD)
Fitting type: DISS male, DISS female, NIST, Air Liquide, Australian type, or Dräger
(depending on country and configuration)
Oxygen regulator bleed: Up to 3 L/min
Due to excessive restriction of the Air Liquide, Australian, and Dräger hose
assemblies, reduced FIO
psi (345 kPa) are employed. Make sure oxygen inlet pressure is 50 psi (345
kPa) when using these hose assemblies, to maintain correct FIO
Connectors Inspiratory limb connector: ISO 22-mm conical male
Expiratory limb connector: ISO 22-mm conical female
Gas exhaust port: ISO 30-mm conical
Gas mixing system Range of delivery to the patient: Up to 300 L/min for pressure support ventilation
(PSV) spontaneous breaths or pressure control ventilation (PCV) mandatory breaths;
3 to 150 L/min for mandatory or assisted volume control ventilation (VCV) breaths.
Leakage from one gas system to another: Not applicable (no high-pressure air
source)
Design pressure: 50 psi (345 kPa)
Operating pressure range: 40 to 90 psi (275 to 620 kPa)
Maximum limited
pressure
Maximum ventilating
pressure
92 cmH2O (92 hPa)
A dedicated backup circuit opens the safety valve if system pressure exceeds
115 cmH
89 cmH
breaths (including PEEP), ensured by HIGH PRESSURE limit.
O (113 hPa).
2
O (89 hPa) for VCV breaths or 80 cmH2O (80 hPa) for PSV breaths and PCV
2
levels may result when oxygen inlet pressures< 50
2
levels.
2
1-5
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Page 30
1 General information
.......................................................................................
Table 1-1 Specifications (continued)
Results of ventilator
breathing system testing
(using circuits identified
for use with 700 Series
Ventilator)
Resistance ranges:
Adult circuits:
Inspiratory resistance at 60 L/min: 4.8 to 5.7 cmH
2.0 cmH2O maximum at 0 cmH2O CPAP.
Expiratory resistance at 60 L/min: 1.6 to 2.2 cmH
4.6 cmH
Pediatric circuits:
Inspiratory resistance at 30 L/min: 1.7 to 3.0 cmH2O (ventilator powered off),
2.8 cmH2O maximum at 0 cmH2O CPAP.
Expiratory resistance at 30 L/min: 0.8 to 1.0 cmH
2.7 cmH2O maximum at 0 cmH2O CPAP.
O maximum at 0 cmH2O CPAP.
2
O (ventilator powered off),
2
O (ventilator powered off),
2
O (ventilator powered off),
2
NOTE:
The circuits identified for use with the 700 Series Ventilator ensure that the
ventilator breathing system does not exceed the EN 794-1 values for
maximum resistance (both inspiratory and expiratory), which are as follows:
Adult: 60 L/min, 6 hPa (6 cmH
Compliance range of recommended breathing circuits: 2.40 to 3.33 ml/cmH2O
Internal volume: Not applicable. The 700 Series Ventilator automatically adjusts for
volume losses due to gas compressibility (that is, automatic compliance
compensation), subject to a maximum delivered volume of 2.5 L.
O); Pediatric: 30 L/min, 6 hPa (6 cmH2O).
2
NOTE:
• To ensure that compliance compensation functions correctly, the user must run
SST or EST with the circuit configured as intended for use on the patient.
• Ventilator breathing circuit testing specifications are based on the recommended
configurations shown in the Operator’s Manual.
.
Electrical specifications
Power supply Input range: 100 to 120 V AC nominal (110 V units), 220 to 240 V AC nominal
(230 V units), 50/60 Hz, 2.9 A (110 V units) or 1.3 A (230 V units), 290 VA
Mains fuse: 10 A, 250 V, medium time lag, high (H) breaking capacity, 6 x 32 mm
(meets IEC and CSA standards). (A circuit breaker in the power assembly opens when
current draw exceeds 4 A.)
Earth leakage current At 100 to 120 V AC operation: less than 300 A
At 220 to 240 V AC operation: less than 500 A
(Includes ventilator, power cord, and internal and external batteries)
Enclosure leakage current Less than 50 A in normal condition (all units)
Less than 300 A in single fault condition at 100-120 V AC operation
Less than 500 A in single fault condition at 220-240 V AC operation
Ground resistance < 0.1 (excluding power cord); < 0.2 (including power cord)
1-6
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 31
General information 1
.......................................................................................
Table 1-1 Specifications (continued)
Internal battery 24 V DC, 7 Ah
Operating time (for a new, fully charged battery at 20C and sea level):
• Approximately 2.5 hours under nominal conditions
(nominal conditions: tidal volume 0.6 L, respiratory rate 15/min,
PEEP/CPAP 5 cmH
30 cmH
• Approximately 2 hours under extreme conditions
(extreme conditions: tidal volume 1.2 L, respiratory rate 15/min,
PEEP/CPAP 15 cmH
average peak pressure 64 cmH
Recharge time: 2.5 to 3 hours in ventilator
Charges automatically while ventilator is connected to AC power and power switch
is on (including standby mode)
Charge level indicated on user interface
External battery 24 V DC, 17 Ah
Operating time (for a new, fully charged battery at 20C and sea level):
• Approximately 7 hours under nominal conditions
(See internal battery for definition of nominal conditions.)
• Approximately 5.5 hours under extreme conditions
(See internal battery for definition of extreme conditions.)
Recharge time: 7.5 to 8 hours in ventilator (3 to 4 hours using optional battery
charger)
Charges automatically while ventilator is connected to AC power and the power
switch is on (including standby mode)
Battery charge levels available under Battery info menu function
Battery shelf life when
charge is not maintained
Ideally internal and external batteries should be stored in a cool, dry place. If the
batteries are stored without maintaining charge, typical shelf life is as follows:
• At 0 to 20C (32 to 68F): 12 months
• At 21 to 30C (69 to 86F): 9 months
• At 31 to 40C (87 to 104F): 5 months
• At 41 to 50C (105 to 122F): 2.5 months
O, average mean pressure 8 cmH2O)
2
O, peak flow 60 L/min, plateau 0 s; average peak pressure
2
O, peak flow 60 L/min, plateau 0 s;
2
O, average mean pressure 24 cmH2O)
2
NOTE:
• If you plan to store the ventilator for longer than 6 months, remove batteries
before storage. Replace the batteries before using the ventilator again.
• Battery life specifications are approximate. To ensure maximum battery life,
maintain full charge and minimize the number of complete discharges.
Serial communications DB9 male connector
Lets computer access ventilator data. Used to upload/download service data and to
perform other communications functions.
Alarm volume Minimum (level 1): 74 dBA at 1 m
Maximum (level 5): 88 dBA at 1 m
Measuring and display devices
Mean airway pressure Sensing position: Exhalation limb
Range: 0 to 99 cmH
Type: Silicon solid state
Peak pressure Sensing position: Exhalation limb
Range: 0 to 140 cmH
Type: Silicon solid state
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
O (0 to 99 hPa)
2
O (0 to 140 hPa)
2
1-7
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1 General information
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Table 1-1 Specifications (continued)
Plateau pressure
(760 Ventilator only)
PEEP/CPAP pressure
(760 Ventilator only)
Rate Sensing position: Microprocessor
I:E ratio Sensing position: Microprocessor
Inspiratory time
(760 Ventilator only)
Exhaled tidal volume Sensing position: Exhalation limb
Total minute volume Sensing position: Exhalation limb
Delivered volume
(760 Ventilator only)
Spontaneous minute
volume
(760 Ventilator only)
sensor Sensing position: Inspiration manifold
FIO
2
Sensing position: Exhalation limb
Range: 0 to 140 cmH
Type: Silicon solid state
Sensing position: Exhalation limb
Range: 0 to 140 cmH
Type: Silicon solid state
Range: 1 to 500 breaths/min
Type: Calculated from inspiratory and expiratory time measurements
Range: 1:99.9 to 9.9:1
Type: Calculated from inspiratory and expiratory time measurements
Sensing position: Microprocessor
Range: 0.1 to 9.9 s
Type: Inspiratory time measurement
Range: 0 to 9 L
Type: Differential pressure pneumotach
Range: 0 to 99 L
Type: Differential pressure pneumotach
Sensing position: Exhalation limb
Range: 0 to 3000 ml
Type: Differential pressure pneumotach
Sensing position: Exhalation limb
Range: 0 to 99 L
Type: Calculated from expiratory flow measurements
Range: 18 to 109 %
Type: Galvanic cell
Sensor life: 2 years, nominal. (Actual life depends on operating environment;
operation at higher temperature or FIO
O (0 to 140 hPa)
2
O (0 to 140 hPa)
2
levels will result in shorter sensor life.)
2
1-8
NOTE:
To achieve compliance with the more rigid requirements for oxygen
monitoring (as set forth in ISO 7767), Nellcor Puritan Bennett recommends
using an external monitor that meets that standard.
Service specifications
Self-test capabilities Automatic power-on self-test (POST): Verifies integrity of electronics.
Short self-test (SST): An abbreviated version of EST to be run by the operator.
Characterizes system leaks and system/tubing compliance.
Extended self-test (EST): Lets the technician thoroughly test the operational integrity
of the ventilator, both electronics and pneumatics. Tests can also be run individually,
in diagnostic EST mode.
Automatic, ongoing software and hardware checks.
Bacteria filter efficiency Inspiratory and expiratory filters (disposable and reusable): 99.97% retention of 0.3
m particles at 100 L/min.
Languages Software and user labeling available in Dutch, English, French, German, Italian,
Japanese, Polish, Portuguese, Russian, or Spanish.
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 33
General information 1
Warning
.......................................................................................
Table 1-1 Specifications (continued)
Other built-in service
capabilities
Compliance and approvals
IEC 60601-1
classification: 1991
The 700 Series Ventilator
System complies with
these International and
European standards:
The 700 Series Ventilator
System has been certified
by these test agencies:
Serial port enabling (for file transfer); loopback test for Communications option serial
ports; battery load test; calibration of oxygen sensor, oxygen regulator pressure
transducer, and PEEP pump; equalization of exhalation pressure transducer/cylinder
pressure transducer (P
preventive maintenance hours; review and erasing of diagnostic code logs; review of
EST test status; and real-time display of monitored ventilator parameters.
The 700 Series Ventilator System complies with the requirements of Directive
2007/47/EC concerning medical devices. It therefore bears the CE marking.
Protection class I, Type B, internally powered, drip-proof equipment, continuous
operation.
IEC 60601-1/EN 60601-1
IEC 60601-2-12
IEC 60601-1-2/EN 60601-1-2
IEC 60601-1-6
CSA: CSA C22.2 No. 601-1, CSA C22.2
No. 601-2-12, NRTL certification.
1.7 Manufacturer’s Declaration
The following tables contain the manufacturer’s declarations for the
electromagnetic emissions, electromagnetic immunity, recommended separation
distances between ventilator and portable and mobile RF communications
equipment, and a list of compliant cables.
), input and viewing of calibration constants; resetting of
e/Pcyl
• Portable and mobile RF communications equipment can affect the
performance of the 700 Series Ventilator System. Install and use this device
according to the information contained in this manual.
•The 700 Series Ventilator System should not be used adjacent t o or stacked with
other equipment, except as specified in this manual. If adjacent or stacked use
is necessary, the 700 Series Ventilator System should be observed to verify
normal operation in the configurations in which it will be used.
NOTE: This is a class A product and is intended to be used in a hospital environment
only. If used outside of the hospital environment, this equipment may not offer
adequate protection to radio-frequency communication services. The user may
be required to take mitigation measures, such as relocating or re-orienting the
equipment.
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
1-9
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1 General information
.......................................................................................
Table 1-2 Electromagnetic Emissions
The 700 Ventilator System is intended for use in the electromagnetic environment specified below. The customer or the user of
the 700 Ventilator System should assure that it is used in such an environment.
Emissions Test Compliance
Radiated emissions
CISPR 11
Conducted emissions
CISPR 11
Harmonic emissions
IEC 61000-3-2
Voltage fluctuations/
flicker emissions
IEC 61000-3-3
Group 1
Class A
Group 1
Class A
Class A
Complies
Electromagnetic environment–guidance
The 700 Series Ventilator System uses RF energy
only for its internal functions. Therefore, its RF
emissions are very low and are not likely to cause
any interference in nearby electronic equipment.
Table 1-3 Electromagnetic Immunity
The 700 Series Ventilator System is intended for use in the electromagnetic environment specified below. The customer or the
user of the 700 Series Ventilator System should assure that it is used in such an environment.
Immunity test
Electrostatic discharge
(ESD)
IEC 61000-4-2
IEC 60601-1-2 test
level
± 6 kV contact
± 8 kV air
Compliance level
± 6 kV contact
± 8 kV air
Electromagnetic environment–
guidance
Floors should be wood, concrete,
or ceramic tile. If floors are covered with synthetic material, the
relative humidity should be at
least 30%.
1-10
Electrical fast transient/
burst
IEC 61000-4-4
Surge
IEC 61000-4-5
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
± 2 kV for power supply lines
± 1 kV for input/output lines
± 1 kV
lines/lines
± 2 kV
lines/earth
± 2 kV for power supply
lines
± 1 kV for input/output
lines
± 1 kV
lines/lines
± 2 kV
lines/earth
Mains power quality should be
that of a typical commercial or
hospital environment.
Mains power quality should be
that of a typical commercial or
hospital environment.
Page 35
General information 1
.......................................................................................
Table 1-3 Electromagnetic Immunity (continued)
The 700 Series Ventilator System is intended for use in the electromagnetic environment specified below. The customer or the
user of the 700 Series Ventilator System should assure that it is used in such an environment.
Immunity test
Voltage dips, short interruptions and voltage variations on power supply
input lines
IEC 61000-4-11
Power frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
NOTE:
T is the AC mains voltage prior to application of the test level.
U
IEC 60601-1-2 test
level
< 5% UT
(> 95% dip in UT for
0.5 cycle)
40% UT
(60% dip in UT for
5cycles)
70% UT
(30% dip in UT for
25 cycles)
< 5% UT
(> 95% dip in UT for 5
s)
3 A/m 3 A/m Power frequency magnetic fields
Compliance level
< 5% UT
(> 95% dip in UT for
0.5 cycle)
40% UT
(60% dip in UT for 5 cycles)
70% UT
(30% dip in UT for
25 cycles)
< 5% UT
(> 95% dip in UT for 5 s)
Electromagnetic environment–
guidance
Mains power quality should be
that of a typical commercial or
hospital environment. If the user
of the 700 Series Ventilator System requires continued operation during power mains
interruptions, it is recommended that the 700 Series Ventilator System be powered from
an uninterruptible power supply
or a battery.
should be at levels characteristic
of a typical location in a typical
commercial or hospital environment.
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
1-11
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1 General information
d0.35P=
d1.2P=
d1.2P=
d2.3P=
.......................................................................................
Table 1-4 Electromagnetic Immunity-conducted and radiated RF
The 700 Series Ventilator System is intended for use in the electromagnetic environment specified below. The customer or
the user of the The 700 Series Ventilator System should assure that it is used in such an environment.
Immunity test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
IEC 60601-1-2 test
level
3 Vrms
150 kHz to 80 MHz
outside ISM bandsa
10 Vrms
inside ISM bandsa
10 V/m
80 MHz to 2.5 GHz
Compliance level
3 Vrms
150 kHz to 80 MHz outside
ISM bands
10 Vrms
inside ISM bands
10 V/m
80 MHz to 2.5 GHz
Electromagnetic environment–
guidance
Portable and mobile RF
communications equipment
should be used no closer to any
part of the 700 Series Ventilator
System, including cables, than the
recommended separation distance
calculated from the equation
applicable to the frequency of the
transmitter.
Recommended separation
distance
80 MHz to 800 MHz
1-12
800 MHz to 2.5 GHz
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 37
General information 1
7-00431
d0.35P=
d1.2P=
d1.2P=
d2.3P=
.......................................................................................
Table 1-4 Electromagnetic Immunity-conducted and radiated RF (continued)
Immunity test
where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer and
d is the recommended separation distance in meters (m)b.
Field strengths from fixed RF transmitters, as determined by an electromagnetic site surveyc, should be less than the
compliance level in each frequency ranged.
Interference may occur in the vicinity of equipment marked with the following symbol:
NOTE:
• At 80 MHz and 800 MHz, the higher frequency range applies.
• These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects, and people.
The ISM (industrial, scientific, and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz’; 13.553 MHz to 13.567
a
MHz; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.70 MHz.
b The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2.5 GHz are
intended to decrease the likelihood that mobile/portable communications equipment could cause interference if it is inadvertently
brought into patient areas. For this reason, an additional factor of 10/3 is used in calculating the recommended separation distance
for transmitters in these frequency ranges.
c Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur
radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic
environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the
location in which the 700 Series Ventilator System is used exceeds the applicable RF compliance level above, the 700 Series Ventilator
System should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or relocating the ventilator.
d Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.
IEC 60601-1-2 test
level
Compliance level
Electromagnetic environment-
guidance
Table 1-5 Recommended separation distances between portable and mobile RF
communications equipment and the 700 Series ventilator
The 700 Series Ventilator System is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the The 700 Series Ventilator System can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the ventilator
as recommended below, according to the maximum output power of the communications equipment.
Rated maximum
output power of
transmitter (W)
0.01 0.035 0.12 0.12 0.23
0.1 0.11 0.38 0.38 0.73
1 0.35 1.2 1.2 2.3
10 1.1 3.8 3.8 7.3
100 3.5 12 12 23
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
150 kHz to 80 MHz
outside ISM bands
(m)
150 kHz to 80 MHz in
ISM bands
(m)
80 MHz to
800 MHz
(m)
800 MHz to
2.5 GHz
(m)
1-13
Page 38
1 General information
Warning
.......................................................................................
Table 1-5 Recommended separation distances between portable and mobile RF
communications equipment and the 700 Series ventilator (continued)
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can
be determined using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating
of the transmitter in watts (W) according to the transmitter manufacturer.
NOTES:
• At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
• The ISM (industrial, scientific, and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to
6.795MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.70 MHz.
•An additional factor of 10/3 is used in calculating the recommended separation distance for
transmitters in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80
MHz to 2.5 GHz to decrease the likelihood that mobile/portable communications equipment could
cause interference if it is inadvertently brought into patient areas.
• These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption
and reflection from structures, objects, and people.
Table 1-6 Compliant cables
Puritan Bennett does not supply remote alarm (nurse call) or serial port cables. In order to maintain
compliance to International Electromagnetic Compatibility (EMC) standards, Puritan Bennett
recommends using shielded cables for these applications.
The use of accessories and cables other than those specified, with the exception of parts
sold by Puritan Bennett as replacements for internal components, may result in increased
emissions or decreased immunity of the 700 Series Ventilator System.
Accessory or cable Maximum length
G-060135-00
Power cord, UK
G-061241-00
Power cord, North America
G-061242-00
Power cord, Australia
G-061243-00
Power cord, continental Europe
G-061244-00
Power cord, Denmark
G-061245-00
Power cord, Italy
G-061246-00
Power cord, Switzerland
G-061247-00
Power cord, India, South Africa
10 ft (3 m)
10 ft (3m)
10 ft (3m)
10 ft (3m)
10 ft (3m)
10 ft (3m)
10 ft (3m)
10 ft (3m)
1-14
G-061248-00
Power cord, Israel
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
10 ft (3m)
Page 39
General information 1
Caution
.......................................................................................
1.8 Tools, equipment, and service materials
The tools, equipment, and service materials listed in Table 1-7 are used to service
the 700 Series Ventilator.
Always use metric tools to remove metric fasteners. Using nonmetric tools to remove
metric fasteners can damage fasteners.
Table 1-7 Tools, equipment, and service materials
Manufacturer and model or
Description
Nellcor Puritan Bennett part
number
Where used
Hex drivers, 1.5-mm, 2.5-mm, 3-mm,
4-mm, and 5-mm
Hex driver, 1/16-in. Local supplier Knob set screw
Hex driver, 7/64-in. Local supplier Autozero solenoid
Nutdrivers or wrenches, 5-mm, 5.5-mm (or
7/32-in.), 7-mm, 8-mm, and 11-mm
Wrench, open-ended (or adjustable) Local supplier
• 10-mm • Inspiration manifold
• 14-mm • Nebulizer connector
• 19-mm • Inspiration manifold
Local supplier Various service procedures
retaining screws
Local supplier Various service procedures
thermistor (previous
version), nurse call
connector lock nut
(Communications
option assembly)
lock nut
(Communications
option assembly)
thermistor (current
version), oxygen
regulator pressure
transducer; oxygen
regulator nut, remote
alarm connector lock
nut (Communications
option assembly)
• 3/16-in. • Oxygen regulator
adjustment screw
• Serial (RS-232) port
hardware
(Communications
option assembly)
•3/8-in. • Oxygen regulator nut
1-15
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Page 40
1 General information
.......................................................................................
Table 1-7 Tools, equipment, and service materials (continued)
Manufacturer and model or
Description
POZIDRIV®screwdrivers, no. 0, 1, and 2 Local supplier Various service procedures
NOTE:
Use POZIDRIV screwdrivers only to remove POZIDRIV screws. Using Phillips-head screwdrivers on
POZIDRIV heads may damage the screw heads.
Flat-bladed screwdriver Local supplier Various service procedures
Nellcor Puritan Bennett part
number
Where used
Flat-bladed screwdriver with long (>20-cm)
shank
Phillips screwdriver, no. 1 Local supplier Cart
Local supplier Piston/cylinder assembly
retaining screws
NOTE:
Use Phillips screwdrivers only to remove Phillips-head screws. Using POZIDRIV screwdrivers on Phillips
heads may damage the screw heads.
Drill with 1/8-in. (3-mm) bit Local supplier Removing serial number
plate
Electrical safety analyzer, capable of
measuring ground resistance and leakage
current
Digital multimeter (DMM) accurate to 3
decimal places
Multimeter patch cord set, 0.025 square
receptacle (Includes red cord
(P/N G-061579-00) and black cord
(P/N G-061580-00))*
Fluke ESA620 or equivalent
Fluke Model ESA 620 or equivalent
http://www.flukebiomedical.com
6920 Seaway Blvd.
Everett, WA USA 98203
Telephone: (425) 446-6945
Toll Free (US): (800) 850-4608
Local supplier Performance verification
G-061567-00 or equivalent Performance verification
Electrical safety test
1-16
Pneumatic calibration analyzer or equivalent
devices capable of measuring oxygen
percent, flow, BTPS volume, pressure, and
barometric pressure. Oxygen analyzer
connector tee. Required accuracies:
• Flow: 2.75% of reading ±0.05 slpm
• Volume: 2% of reading or ±1 digit
• Low pressure (-150 to +150 cmH
0.75% of reading ±0.04 cmH
• High pressure (0 to 150 psig):
1.0% of reading ±0.1 psi
• Oxygen percentage: ±2% oxygen
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
O):
2
O
2
Nellcor Puritan Bennett PTS 2000
Performance Test System
(4-074686-00)
Performance verification,
EST, oxygen regulator
pressure transducer
calibration
Page 41
General information 1
Warning
.......................................................................................
Table 1-7 Tools, equipment, and service materials (continued)
Manufacturer and model or
Description
Nellcor Puritan Bennett part
number
Where used
ESD-safe vacuum cleaner with 0.2 m filter
(rated for photocopiers and laser printers)
Static-dissipative field service kit (includes
wrist strap, static-dissipative mat, and
ground cord)
Oxygen source, 40 to 90 psi (275 to 620
kPa); (50 psi (345 kPa) required for oxygen
sensor calibration check)
Due to excessive restriction of the Air Liquide, Australian, and Dräger hose assemblies, reduced FIO2 levels
may result when oxygen inlet pressures< 50 psi (345 kPa) are employed. Make sure oxygen inlet pressure
is 50 psi (345 kPa) when using these hose assemblies, to maintain correct FIO
*
Local supplier General cleaning of
ventilator interior
G-061661-00 or equivalent Various service procedures
Local supplier EST, performance
verification, oxygen sensor
calibration check
levels.
2
NOTE:
To ensure that compliance compensation functions
correctly, the user must run EST or SST with the circuit
configured as intended for use on the patient.
Oxygen regulator pressure transducer (Po)
calibration tool
For use with:
• PTS 2000: 4-079050-00
• G-061541-SP
Calibrating oxygen
regulator pressure
transducer
Cable ties, small G-061096-00 or local supplier Various places
Cutting tool Local supplier Various service procedures
(for cutting cable ties or
wires)
Leak test fluid 4-004489-00 O
Rivets G-061182-00 Attaching serial number
Isopropyl alcohol Local supplier General cleaning
Cotton swabs Local supplier General cleaning
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
adapter assembly
2
plate
1-17
Page 42
1 General information
.......................................................................................
Table 1-7 Tools, equipment, and service materials (continued)
Manufacturer and model or
Description
Touch-up paint
• White liquid lacquer
Nellcor Puritan Bennett part
number
• G-061999-00
Where used
• Ventilator cabinet
• Charcoal liquid lacquer
• Gray liquid lacquer
Electrostatic-shielding bags
• 66 x 46 cm (26 x 18 in.)
• 13 x 20 cm (5 x 8 in.)
• 28 x 38 cm (11 x 15 in.)
*
• G-062000-00
• G-061361-00
*
*
• G-061534-00
• G-061532-00
• G-061533-00
• Ventilator lid
• Ventilator cart
• UI display PCB
•Optoswitch
• Controller PCB, BBU
PCB, pressure solenoid
PCB
1-18
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 43
General information 1
.......................................................................................
1.9 Periodic maintenance
Table 1-8 lists the periodic maintenance activities (other than patient system
maintenance) required for the 700 Series Ventilator. The hours remaining until
service is due are displayed when POST is run and through the Service summary
menu option (see the Operator’s Manual). For patient system maintenance, consult
the Operator’s Manual.
Table 1-8 Schedule of periodic maintenance
Interval Part Activity
250 hours or 1 month of use (or
more often, if required)
1000 hours or 3 months of use (or
more often, if required)
Every year or per your hospital’s
protocol
Every quarter Backup alarm function Test backup alarm function per
Every two years Entire ventilator Performance Verification
15,000 hours of operation Entire ventilator Install 15,000-hour preventive
30,000 hours of operation Entire ventilator Install 30,000-hour preventive
Every 2 years or as necessary • Internal battery (G-061139-00)
Main fan filter (G-060531-00) Either vacuum filter or wash filter in
a warm detergent solution, rinse,
and dry well. Replace filter when it
shows signs of wear or when a FAN
FAILED ALERT alarm occurs.
Air intake filter (G-060457-00) Replace at recommended interval
or when an AIR INTAKE BLOCKED
alarm occurs.
Entire ventilator Electrical safety test
Section 8.10.3.2 steps
maintenance kit
(P/N G-061166-00), including
performance verification.
maintenance kit
(P/N G-061167-00), including
performance verification.
Replace.
• External battery (G-061140-00)
• Oxygen sensor (G-062010-00
for sensor only; G-062009-00 if
replacing a sensor with integral
harness),
NOTE:
Using ventilator menu functions, you can view the remaining
estimated life of the internal and external batteries, in hours.
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
1-19
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1 General information
Caution
.......................................................................................
1.10 Service kits
Table 1-9 lists the 700 Series Ventilator service kits. Chapter 9 lists the mounting kits
available for the ventilator.
Table 1-9 Service kits
Part no. Description
G-061166-00 15,000-hour preventive maintenance kit. See Chapter 9 for contents.
G-061167-00 30,000-hour preventive maintenance kit. See Chapter 9 for contents.
G-060872-00 700 Series Ventilator return (repackaging) kit..
1.11 Controls and indicators
Operating the ventilator involves setting the controls and observing indicators on
the ventilator keyboard. For further details, see Figure 1-2
Tab l e 1-1 0 through Table 1-12. The keyboard is grouped into three sections:
• VENTILATOR SETTINGS: Where breath delivery variables are set.
, Figure 1-3, and
• PATIENT DATA: Where alarm limits are set, and monitored pressures, breath
timing, and volumes may be viewed.
• VENTILATOR STATUS: Where alarm status and operating condition of the
ventilator are viewed.
To avoid damaging the keyboard, do not puncture it with sharp objects.
1-20
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
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General information 1
VENTILATOR SETTINGS section VENTILATOR STATUS sectionPATIENT DATA section
7-00315
.......................................................................................
Figure 1-2. Controls and indicators on 740 Ventilator keyboard
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
1-21
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1 General information
VENTILATOR SETTINGS section VENTILATOR STATUS sectionPATIENT DATA section
7-00316
.......................................................................................
1-22
Figure 1-3. Controls and indicators on 760 Ventilator keyboard
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 47
General information 1
.......................................................................................
1.11.1 Ventilator Settings
The VENTILATOR SETTINGS section of the keyboard allows you to select the
ventilation mode, breath type, and settings. For more detail on ventilation modes
and breath delivery, see the 700 Series Ventilator System Operator’s Manual.
To change the mode and settings, select the mode, then the breath type, and then
the ventilator settings. The keys flash during setup and mode changes to ensure
that you review all pertinent settings. The keyboard is designed to minimize
accidental or unintentional changes.
Table 1-10 summarizes the functions of the keys, knob, and indicators in the
VENTILATOR SETTINGS section of the keyboard. Ventilator settings are also limited
by these breath delivery boundaries:
•I:E ratio 4:1 for PCV (760 Ventilator only), 3:1 for all other breath types
• Inspiratory time = 0.2 to 8 seconds (excluding plateau)
•Expiratory time 0.2 seconds
• PEEP/CPAP + SUPPORT PRESSURE or INSPIRATORY PRESSURE 80 cmH
(80 hPa)
NOTE:
Maximum SUPPORT PRESSURE is 70 cmH
is 80 cmH
• SUPPORT PRESSURE or INSPIRATORY PRESSURE + PEEP/CPAP < HIGH
PRESSURE - 2 cmH
• HIGH PRESSURE (in A/C and SIMV modes) > PEEP/CPAP + 7 cmH
• HIGH PRESSURE (in SPONT mode) > PEEP/CPAP + SUPPORT PRESSURE +
2 cmH
• HIGH PRESSURE > LOW INSP PRESSURE
•Minute volume 50 L/min at an I:E ratio of 2:1
O.
2
O (2 hPa)
2
O (2 hPa)
2
O, maximum INSPIRATORY PRESSURE
2
O (7 hPa)
2
O
2
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
1-23
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1 General information
.......................................................................................
Table 1-10 700 Series Ventilator keyboards: VENTILATOR SETTINGS
Key/indicator Specifies... Range
Mode/breath type settings
A/C Assist/control mode. VCV (volume control ventilation) and PCV
(pressure control ventilation) breath types.
(PCV available on 760 Ventilator only.)
SIMV Synchronous intermittent mandatory
ventilation mode.
SPONT Spontaneous mode. PSV breath type
VCV VCV breath type. VCV available on 740 and 760 Ventilators in
PCV PCV breath type. PCV available on 760 Ventilator only in A/C or
PSV PSV breath type. PSV available in SIMV or SPONT modes.
Mandatory (VCV) settings
RESPIRATORY
RATE
TIDAL VOLUME Volume delivered to the patient during a
PEAK FLOW Maximum flow of gas delivered during a
The minimum number of mandatory
breaths the patient receives per minute.
mandatory breath, compliancecompensated and corrected to body
temperature and pressure, saturated
(BTPS).
mandatory breath (BTPS). (Combined with
tidal volume, peak flow defines the active
portion of inspiratory time.)
VCV, PCV (760 only), and PSV (pressure
support ventilation) breath types.
A/C or SIMV modes.
SIMV modes.
1 to 70 /minute (non-apnea ventilation)*
6 to 70 (apnea ventilation)*
Accuracy: (0.1 + 1%) /minute
* For ventilators equipped with software
revision J or later.
40 to 2000 ml
Accuracy: (10 ml + 10% of setting)
3 to 150 L/min
Accuracy: (5 + 10% of setting) L/min
1-24
PLATEAU (s) Length of inspiratory pause after a
mandatory breath has been delivered,
during which no gas is delivered.
Mandatory (PCV) settings (760 Ventilator only)
RESPIRATORY
RATE
INSPIRATORY
PRESSURE
(760 only)
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
The minimum number of mandatory
breaths the patient receives per minute.
Pressure above PEEP during the inspiratory
phase of a PCV breath.
0.0 to 2.0 second
Accuracy: 0.05 second
1 to 70 /minute (non-apnea ventilation)*
6 to 70 (apnea ventilation)*
Accuracy: (0.1 + 1%) /minute
* For ventilators equipped with software
revision J or later.
5 to 80 cmH
Accuracy: (3 + 2.5% of setting) cmH
O (5 to 80 hPa)
2
2
O
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Table 1-10 700 Series Ventilator keyboards: VENTILATOR SETTINGS (continued)
Key/indicator Specifies... Range
TI/I:E RATIO
(760 only)
RISE TIME
FACTOR
(760 only)
You can use the MENU key to select
inspiratory time (TI) or I:E ratio as the
breath timing setting for a PCV breath. You
can change the selected breath timing
setting (T
remains constant when you change the
respiratory rate in PCV.
Selecting I:E ratio makes the set ratio of
inspiratory time to expiratory time for a
PCV breath.
The time for inspiratory pressure to rise
from 0 to 95% of the target pressure level
during a PCV breath.
A setting of 100 = a 100-msec rise time,
and a setting of 5 = 80% of the inspiratory
time or 2500 msec, whichever is less.
When this setting is changed, the message
window shows the actual time (in seconds)
to reach 95% of target pressure.
NOTE:
or I:E ratio), but the setting
I
To help determine the correct setting for inspiratory time, during PCV the message
window displays peak inspiratory flow, end inspiratory flow, and end exhalation flow in
L/min.
Inspiratory time(T
Accuracy: 0.05 second
I:E ratio1:99 to 4:1
Accuracy: (0.1 + 2%)
5 to 100
)0.2 to 8 seconds
I
Spontaneous (PSV) settings
SUPPORT
PRESSURE
RISE TIME
FACTOR
(760 only)
Pressure above PEEP maintained during
spontaneous inspiration. Support pressure
is terminated when inspiratory flow falls to
25% of peak inspiratory flow, or to the
exhalation sensitivity setting (760 only), or
10 L/min or 25% of peak flow, whichever is
lower (740 only). Maximum inspiratory
time is 3.5 seconds for adults, and 2.5
seconds for pediatric patients.
The time for inspiratory pressure to rise
from 0 to 95% of the target pressure level
during a PSV breath.
A setting of 100 = a 100-msec rise time,
and a setting of 5 = 80% of the inspiratory
time or 1500 msec (when an adult
ventilator breathing circuit is selected) or
600 msec (when a pediatric circuit is
selected), whichever is less.
When you adjust this setting, the message
window shows the actual time (in seconds)
to reach 95% of target pressure.
0 to 70 cmH
Accuracy: (3 + 2.5% of setting) cmH
5 to 100
O (0 to 70 hPa)
2
O
2
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1 General information
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Table 1-10 700 Series Ventilator keyboards: VENTILATOR SETTINGS (continued)
Key/indicator Specifies... Range
EXH
SENSITIVITY
(760 only)
Common settings
PEEP/CPAP Positive end expiratory pressure/continuous
TRIGGER
SENSITIVITY
(L/min)
% O
2
The percent of peak expiratory flow at
which the ventilator cycles from inspiration
to exhalation for spontaneous breaths. The
flow at which the ventilator cycles from
inspiration to exhalation for PSV breaths.
Exhalation begins when the inspiratory flow
is less than the set value.
To help set EXH SENSITIVITY appropriately,
the peak inspiratory flow and end
inspiratory flow are displayed in the
message window in PSV.
positive airway pressure. Minimum pressure
maintained during inspiratory and
expiratory phases.
Inspiratory flow required to trigger the
ventilator to deliver a breath.
Percentage of inspired oxygen of the gas
delivered to the patient.
NOTE:
It may take several minutes for the oxygen percentage to stabilize.
1 to 80%*
* For ventilators equipped with software
revision J or later.
0 to 35 cmH
Accuracy: (2 cmH
1 to 20 L/min
21 to 100%
Accuracy: 3% full scale
O (0 to 35 hPa)
2
O + 4% of setting)
2
Other keys, knob, and indicators
APNEA
PAR A MS key
MENU Allows you to view active and reset alarms, run SST and EST, adjust certain settings (including
100% O
2
Allows the operator to select VCV or PCV (760 Ventilator only) apnea ventilation, and apnea
ventilation settings. Apnea ventilation is available SPONT mode, or in SIMV or A/C mode
when the respiratory rate is less than 6 /minute.* You can select an apnea interval from 10 to
60 seconds.* For other apnea parameter ranges, see mandatory VCV settings and mandatory
PCV (760 Ventilator only) settings.
* For ventilators equipped with software revision J or later.
endotracheal tube size, humidifier type*, date and time, apnea interval*, VCV flow (ramp or
square) pattern*, speaking valve setup*, alarm volume, PCV timing, and volume bar graph
display), access oxygen sensor functions (calibrate, enable or disable % O
enable or disable display of oxygen sensor reading), enter standby mode, and view battery
information, display software revision, display service information, and enter EasyNeb
nebulizer functions. (The 700 Series Ventilator System Operator’s Manual explains how to use
the menu function.)
* For ventilators equipped with software revision J or later.
Switches the % O2 to 100% for 2 minutes, then returns to the current % O2 setting. The
2-minute interval restarts every time you press 100% O
can press CLEAR to stop the maneuver (unless you have entered a MENU key function or
selected a setting).
. Once the 100% O2 has started, you
2
alarm limits, and
2
1-26
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Table 1-10 700 Series Ventilator keyboards: VENTILATOR SETTINGS (continued)
Key/indicator Specifies... Range
MANUAL INSP Delivers one mandatory breath to the patient according to the current mandatory settings (in
A/C or SIMV) or the current apnea parameters (in SPONT). You can deliver a MANUAL INSP at
any time during the exhalation phase of a breath as long as the exhaled flow is less than 30%
of the peak exhaled flow, except during apnea ventilation.
EXP PAUSE
(760 only)
INSP PAUSE
(760 only)
CLEAR Pressing CLEAR before accepting a setting cancels the proposed setting. Pressing CLEAR does
ACCEPT Makes changes to settings effective. If you don’t press ACCEPT within 30 seconds of
Allows you to measure the patient’s auto-PEEP. Pressing EXP PAUSE causes the ventilator to
close the exhalation valve at the end of the expiratory phase, and does not deliver the next
mandatory breath. At the end of the maneuver, the message window shows the calculated
value for auto-PEEP (expiratory pressure at the beginning of the maneuver minus expiratory
pressure at the end of the maneuver) and total PEEP for 30 seconds.
The message window shows the end expiratory flow in L/min at the beginning of each breath.
If there is expiratory flow when the ventilator delivers the next breath, indicates that autoPEEP is present.
The EXP PAUSE continues as long as you hold down the key, and should last only as until
expiratory pressure stabilizes. An EXP PAUSE maneuver ends when you release the key, the
patient initiates a breath, an alarm occurs, the expiratory phase (including the maneuver) lasts
more than 20 seconds, or the ventilator detects a leak.
Auto-PEEP:
Range: 1 to 35 cmH
Accuracy: (1 cmH
Allows you to measure the patient’s compliance and resistance. An extended inspiratory pause
also allows you to expand the patient’s lungs for up to 10 seconds.
Pressing INSP PAUSE momentarily causes the ventilator to wait until the end of the inspiratory
phase of the current or next mandatory breath (in SPONT mode, the ventilator delivers a
mandatory breath using the MANUAL INSP key according to the apnea settings), stop breath
delivery, and keep the exhalation valve closed. The INSP PAUSE continues until the ventilator
detects a stable plateau pressure or 2 seconds have elapsed. An INSP PAUSE maneuver ends
when a stable plateau is reached or an alarm occurs.
Pressing INSP PAUSE for 2 or more seconds after the pause begins causes the ventilator to
deliver an inspiratory pause for as long as you hold down the key. An extended INSP PAUSE
maneuver ends when you release the key or 10 seconds have elapsed.
You can press CLEAR or release the INSP PAUSE key at any time to cancel an INSP PAUSE
maneuver.
At the end of the breath, the message window shows the calculated value for compliance and
resistance (if the mandatory breath was a VCV breath) or compliance (if the mandatory breath
was a PCV breath) for 30 seconds.
Compliance:
Range: 1 to 150 mL/cmH
Accuracy: (1 mL/cmH
Resistance:
Range: 0 to 150 cmH
Accuracy: (3 cmH
not cancel accepted settings.
Pressing CLEAR twice returns the ventilator to its previous state (unless you have entered a
MENU key function that requires you to press CLEAR more times).
Pressing CLEAR during a 100% O
proposing a new setting, the user interface returns to its previous state.
O.
2
O + 3% of reading).
2
O.
2
O + 20% of reading).
2
O/L/second.
2
O/L/second + 20% of reading).
2
maneuver cancels the maneuver.
2
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Table 1-10 700 Series Ventilator keyboards: VENTILATOR SETTINGS (continued)
Key/indicator Specifies... Range
Knob Adjusts the value of a setting or selects a menu option. A setting value that flashes means that
the knob is linked to that setting. Turning the knob clockwise increases the value, and turning
the knob counterclockwise decreases the value.
CURRENT Lights when the ventilator is operating according to the displayed settings, or during apnea
ventilation. (There is one indicator for mandatory breaths, and one for spontaneous breaths.)
PROPOSED Lights when you propose a mode or breath type, or you are setting apnea parameters. Once
a proposed setting is accepted, it becomes effective at the next breath.
APNEA
PAR A MS
indicator
Message
window
Lights when apnea ventilation is active.
Lights with PROPOSED indicator when you are setting apnea parameters, and both indicators
turn off once apnea parameters are accepted.
Shows up to four lines of information (20 characters per line).
First line: Reserved for the highest-priority active or autoreset alarm. On the 760 Ventilator and
for 740 Ventilators with software revision H or later, if no alarm is active and the display of the
oxygen sensor reading is enabled, the % O
proposed breath type, the VCV flow pattern is also displayed if there are no active or autoreset
alarms.
Second line: Information about the menu function or settings, alarm silence time remaining, or
current date and time. On the 760 Ventilator and for 740 Ventilators with software revision H
or later during normal ventilation, shows “Flow (L/min).”
Third and fourth lines: Reserved for other messages. On the 760 Ventilator and for 740
Ventilators with software revision H or later for every breath type, peak and end inspiratory
flows are displayed on the third line, and end expiratory flow is displayed on the fourth line
(except that inspiratory flow is not displayed during VCV breaths or VCV apnea ventilation).
is displayed here. If VCV is the current or
2
1-28
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General information 1
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1.11.2 Patient Data
The PATIENT DATA section of the keyboard allows you to view the pressure, breath
timing, and volume of the patient’s breath. You can also view or change the alarm
settings. A lighted key indicates that a measurement is selected, and its value
appears in the display window. Values are continuously displayed and updated
during ventilation.
Table 1-11 summarizes the functions of the keys and indicators in the PATIENT
DATA section of the keyboard.
Table 1-11 700 Series Ventilator keyboards: PATIENT DATA
Key/indicator Function Range
Pressure
MEAN PRESSURE Shows the calculated value of
ventilator breathing circuit pressure
over an entire respiratory cycle.
Updated at the beginning of each
breath.
PEAK PRESSURE Shows the maximum pressure
measured during inspiration.
Updated at the beginning of each
expiratory phase. (Default pressure
display.)
PLATEAU
PRESSURE
(760 only)
PEEP/CPAP
(760 only)
Shows the pressure measured at the
end of the plateau period of a
mandatory inspiration (whether the
inspiration is in a regular VCV
breath or is part of an inspiratory
pause maneuver). Updated at the
beginning of each expiratory phase.
The PRESSURE display shows a
blank if the ventilator does not
detect a stable plateau pressure.
Shows the pressure measured at the
expiratory limb before any
inspiratory effort. Updated at the
beginning of each inspiratory
phase.
0 to 99 cmH
Accuracy:
(3 + 4% of reading) cmH
0 to 140 cmH
(0 to 140 hPa)
Accuracy:
(3 + 4% of reading) cmH
0 to 140 cmH
(0 to 140 hPa)
Accuracy:
(3 + 4% of reading) cmH
0 to 140 cmH
(0 to 140 hPa)
Accuracy:
(3 + 4% of reading) cmH
O (0 to 99 hPa)
2
O
2
O
2
O
2
O
2
O
2
O
2
O
2
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
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Table 1-11 700 Series Ventilator keyboards: PATIENT DATA (continued)
Key/indicator Function Range
Breath timing
RATE (/min) Shows the calculated value of the
total respiratory rate, based on the
previous 60 seconds or 8 breaths
(whichever interval is shorter).
Updated at the beginning of each
breath. (Default breath timing
display.)
The calculation is reset (and display
is blank) when ventilation starts,
when apnea ventilation starts or
autoresets, when you change the
mode, breath type, or RESPIRATORY
RATE setting, and when you press
the alarm reset key.
I:E RATIO Shows the ratio of measured
inspiratory time to measured
expiratory time. Updated at the
beginning of each breath.
INSP TIME (s)
(760 only)
Volume
The measured inspiratory time,
including breaths that are truncated
due to a HIGH PRESSURE alarm.
Updated at the beginning of each
expiratory phase.
1* to 500 /minute
Accuracy:
(0.1 +1% of reading)/minute
* For ventilators equipped
with software revision J or
later.
1:99.9 to 9.9:1
Accuracy: (0.1 + 2%)
0.00 to 9.90 seconds
Accuracy: 0.05 seconds
EXHALED
VOLUME (ml)
Shows the patient’s measured
expiratory tidal volume averaged
over the last 5 breaths (for A/C VCV
breaths, ventilator-initiated PCV
breaths, and PCV apnea breaths) or
for the just-completed breath (for
all other breaths). Corrected to
BTPS and compliancecompensated. Updated at the
beginning of each inspiration.
(Default volume display.)
The calculation is reset when
ventilation starts, when apnea
ventilation starts or autoresets,
when you change the mode, breath
type, or any setting that affects
breath averages (for example,
respiratory rate or inspiratory time),
and when you press the alarm reset
key.
0 to 9 L
Accuracy:
(10 ml + 10% of reading)
1-30
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General information 1
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Table 1-11 700 Series Ventilator keyboards: PATIENT DATA (continued)
Key/indicator Function Range
TOTAL MINUTE
VOLUME (L)
DELIVERED
VOLUME (mL)
(760 only)
SPONT MINUTE
VOLUME (L)
(760 only)
Shows the patient’s measured
expiratory minute volume, based
on the previous 60 seconds or 8
breaths (whichever interval is
shorter). Updated at the beginning
of each breath.
The calculation is reset when
ventilation starts, when apnea
ventilation starts or autoresets,
when you change the mode or
breath type, and when you press
the alarm reset key.
Shows the measured inspiratory
tidal volume for the just-completed
PCV or PSV breath. Corrected to
BTPS and compliancecompensated. Updated at the
beginning of each inspiration.
Shows the patient’s measured
expiratory minute volume for all
spontaneous breaths, based on the
previous 60 seconds or 8 breaths
(whichever interval is shorter).
Updated at the beginning of each
breath.
The calculation is reset when
ventilation starts, when apnea
ventilation starts or autoresets,
when you change the mode or
breath type, and when you press
the alarm reset key.
0 to 99 L
Accuracy:
(10 ml + 10% of reading)
0 to 3000 ml
Accuracy:
(10 ml + 10% of reading)
0 to 99 L
Accuracy:
(10 ml + 10% of reading)
Alarm settings
HIGH RATE An active alarm indicates that
measured respiratory rate is higher
than the alarm setting.
HIGH TIDAL
VOLUME
LOW INSP
PRESSURE
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
An active alarm Indicates that
exhaled volume for three out of four
consecutive breaths was above the
alarm setting.
An active alarm indicates that
monitored circuit pressure is below
the alarm setting at the end of
inspiration. Inactive in SPONT
mode unless the speaking valve
option is enabled.
3 to 100 /minute
Accuracy:
(0.1 +1% of setting)/minute
20 to 6000 ml
Accuracy:
(10 ml + 10% of setting)
3 to 60 cmH
Accuracy:
(1 + 3% of setting)
O (3 to 60 hPa)
2
1-31
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Table 1-11 700 Series Ventilator keyboards: PATIENT DATA (continued)
Key/indicator Function Range
LOW TIDAL
VOLUME
HIGH PRESSURE An active alarm indicates that two
LOW MINUTE
VOLUME
Other indicators
Pressure bar
graph
An active alarm indicates that
exhaled volume for three out of four
consecutive breaths were below the
alarm setting. (If this alarm is set to
0 ml and breath type is PCV or PSV,
an active alarm indicates that
delivered volume is less than 3 ml
for three out of four consecutive
breaths.)
consecutive breaths were truncated
because circuit pressure reached the
alarm setting.
An active alarm indicates that
monitored minute volume is less
than the alarm setting, based on an
eight-breath running average or the
previous minute, whichever is less.
Shows real-time pressures in
centimeters of water (cmH2O) or
hectopascals (hPa).
LEDs show the current HIGH
PRESSURE alarm setting and the
peak pressure of the last breath
during exhalation.
0 to 2000 ml
Accuracy:
(10 ml + 10% of setting)
10 to 90 cmH
hPa)
Accuracy:
(1 + 3% of setting)
0 to 50 L
Accuracy:
O (10 to 90
2
(10 ml + 10% of setting)
-10 to 90 cmH2O
(-10 to 90 hPa)
Resolution: 1 cmH
O (1 hPa)
2
Volume bar
graph
(760 only)
MAND Lights at the start of each breath to
Shows real-time exhaled volume in
milliliters (ml). Volumes are
compliance-compensated and
corrected to BTPS.
The active scale is determined by
the HIGH TIDAL VOLUME alarm
setting. LEDs show the current
HIGH TIDAL VOLUME and LOW
TIDAL VOLUME alarm settings. You
can use the MENU key to enable or
disable the volume bar graph.
During exhalation, LEDs show the
maximum exhaled volume of the
last breath.
indicate a ventilator- or operatorinitiated mandatory breath is being
delivered.
If HIGH TIDAL VOLUME
setting < 500 ml:
0 to 500 ml
Resolution: 5 ml
If HIGH TIDAL VOLUME
setting >
0 to 2000 ml
Resolution: 20 ml
Not applicable
500 ml:
1-32
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
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General information 1
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Table 1-11 700 Series Ventilator keyboards: PATIENT DATA (continued)
Key/indicator Function Range
ASSIST Lights at the start of each breath to
indicate a patient-initiated
mandatory breath is being
delivered.
SPONT Lights at the start of each breath to
indicate a patient-initiated
spontaneous breath is being
delivered.
Not applicable
Not applicable
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1 General information
2 min
RESET
.......................................................................................
1.11.3 Ventilator Status
The VENTILATOR STATUS section of the keyboard shows the operating condition
of the ventilator, and is continuously updated during operation. Table 1-12
summarizes the functions of the keys and indicators in the VENTILATOR STATUS
section of the keyboard.
Table 1-12 700 Series Ventilator keyboards: VENTILATOR STATUS
Key/indicator
ALARM Red
CAUTION Yellow
NORMAL Green Lights when no alarm condition is present.
VENT INOP Red
SAFETY VALVE
OPEN
Color
(Priority)
(high)
(medium)
(high)
Red
(high)
Function
Flashes when a high-priority alarm is active. A repeating
sequence of three, then two beeps sounds. Lights steadily
when a high-priority alarm has been autoreset.
Flashes when a medium-priority alarm is active. A repeating
sequence of three beeps sounds. Lights steadily when a
medium-priority alarm has been autoreset.
Lights to indicate that the ventilator is inoperative, and the
ventilator safety valve is open. A qualified service technician
must run and pass the extended self-test (EST) before normal
ventilation can resume.
If the condition that caused the safety valve to open no
longer exists, and the VENT INOP indicator is off, press the
alarm reset key to resume ventilation.
Lights when the ventilator’s safety valve and exhalation valve
open and only room air is available to the patient.
Can indicate that the ventilator is inoperative, or there is an
occlusion in the ventilator breathing circuit. If possible, the
message window shows the alarm that triggered the safety
valve open condition and how much time has elapsed since
the last breath was triggered.
1-34
ON AC/
BATTERY
CHARGING
ON INTERNAL
BATTERY
ON EXTERNAL
BATTERY
INTERNAL
BATTERY LEVEL
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Green Lights when the ventilator is running on AC power and the
battery is charging.
Yellow Flashes when the ventilator is running on the internal
battery.
Yellow Flashes when the ventilator is running on the external
battery.
Green Shows the relative charge level of the internal battery.
Flashes when ventilator runs on internal or external battery
power, lights steadily when ventilator runs on AC power.
Yellow Alarm silence: Silences the alarm sound for 2 minutes from
the most recent key press.
Alarm reset: Reestablishes all alarm indicators, cancels the
Not
applicable
alarm silence period, and resets the patient data displays. If
the condition that caused the alarm still exists, the alarm
reactivates. Cancels apnea ventilation, if active. Reestablishes
previous settings and ventilation resumes, unless the
ventilator is inoperative.
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General information 1
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1.12 Location of ventilator serial number
A serial number plate is affixed to the front of the ventilator near the bottom.
1.13 Determining software revision
The software revision is displayed when you power on the ventilator. You can also
determine the ventilator’s software revision by using the Software revision menu
option (see the 700 Series Ventilator System Operator’s Manual for more information
on the MENU key).
1.14 Service philosophy
Field service of the ventilator is limited to the service activities described in this
manual. For field service, technical support, or information on technical training,
call 1-800-635-5267 (within the USA) or contact your Nellcor Puritan Bennett
representative (outside the USA).
1.15 Reference documentation
G-061988-00 700 Series Ventilator System Operator’s Manual (Czech)
G-061989-00 700 Series Ventilator System Operator’s Manual (Dutch)
G-061874-00 700 Series Ventilator System Operator’s Manual (English)
G-061981-00 700 Series Ventilator System Operator’s Manual (French)
G-061980-00 700 Series Ventilator System Operator’s Manual (German)
G-061982-00 700 Series Ventilator System Operator’s Manual (Italian)
G-061987-00 700 Series Ventilator System Operator’s Manual (Japanese)
G-061985-00 700 Series Ventilator System Operator’s Manual (Polish)
G-061984-00 700 Series Ventilator System Operator’s Manual (Portuguese)
G-061986-00 700 Series Ventilator System Operator’s Manual (Russian)
G-061983-00 700 Series Ventilator System Operator’s Manual (Spanish)
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
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1-36
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 61
.
M
anual Name:
700 Seri
l
Part Rev Date: G-061875-00 Rev. B (10/09)
es Ventilator System Service Manua
Chapter
Theory of operation 2
2
.......................................................................................
This chapter details the operational theory of the 700 Series Ventilator System. It
begins by describing the overall operation of the ventilator and continues by
describing the pneumatic system, including the individual components and their
operations as subsystems. Next it describes the electrical system, including the
operations of the printed circuit boards (PCBs). Finally it describes the interactions
between all ventilator components during breath delivery and under certain other
conditions.
2.1 Overview of ventilator operation
The 700 Series Ventilator System (Figure 2-1) consists of two major systems: the
pneumatic system and the electrical system. The pneumatic system, under control
of the breath delivery (BD) microprocessor, supplies air and oxygen to the patient
system external to the ventilator. The electrical system powers the ventilator and
provides electronic control of the ventilator’s components. It includes five printed
circuit boards (PCBs), a power supply, and various minor components (fans,
harnesses, etc.).
Room air and oxygen from an external supply enter the cylinder via the mixing
manifold. The piston/cylinder assembly, which is driven by the motor, mixes the
gases and precisely controls the flow to the patient. An important aspect of the
piston-based pneumatic system is that no contact occurs between the piston and
cylinder wall; there is a minute gap. Because the piston and cylinder do not touch,
friction between the piston and cylinder is eliminated, improving the ventilator’s
performance and reducing wear on the parts.
The output mixture of air and oxygen passes through the inspiration manifold and
a patient system external to the ventilator; this patient system may be composed of
tubing, filters, water traps, and a humidification device. The patient exhales the gas
through the opened exhalation valve.
Pressure transducers provide feedback measurements to the BD microprocessor.
After undergoing digital conversion, these measurements are used in calculations
that control ventilation.
Initial settings and data for use by the microprocessor are entered by the operator
via the user interface (UI). The data is processed by the UI microprocessor, then
stored in the ventilator memory. The BD microprocessor uses this data to control
the flow of gas to the patient system. Power to operate the ventilator comes from
the AC mains (via a 24 V DC power supply output), or from an internal or external
(optional) rechargeable backup battery. The external battery (if present) is used if
AC power is interrupted. The internal battery is used if the external battery is
exhausted or not present. The external battery can be connected or disconnected
without any interruption in ventilation.
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
2-1
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2 Theory of operation
7-00122
.......................................................................................
2-2
Figure 2-1. 700 Series Ventilator System
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 63
Theory of operation 2
.......................................................................................
2.2 Pneumatic system
The 700 Series Ventilator pneumatic system includes the following (see Figure 2-2):
• Gas inlet system
• Piston/cylinder system
• Inspiratory manifold system
•Patient system
• PEEP/CPAP system
• Exhalation system
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
2-3
Page 64
2 Theory of operation
Exhaust
port
Oxygen
Air
Oxygen
Oxygen solenoids
Oxygen
Mixing
Safety
Oxygen
Outlet
Cylinder
Piston/cylinder assy
Inlet
Motor/
Exhalation
Thermistor
Exhalation
Inspiratory
Exhalation
PEEP
Filter
PEEP
check
valve
sensor
regulator
fitting
intake
filter
manifold
check
valve
regulator
pressure
transducer
encoder
solenoid
filter
Expiratory
filter
Collector
vial
pressure
transducer
autozero
solenoid
Exhalation
pressure
transducer
autozero
solenoid
reservoir
valve
assy
Heater assy
flow sensor
pump
valve
To patient
PRESSURE SOLENOID PCB
VENTILATOR HEAD
Jet
venturi
7-00019
Air intake
check
Pressure
relief
check
valve
valve
Restrictor
.......................................................................................
2-4
Figure 2-2. Pneumatic system
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 65
Theory of operation 2
.......................................................................................
Table 2-1 provides some pertinent specifications and other data for the ventilator’s
pneumatic components.
Table 2-1 Pneumatic component data
Component Data
Check valve, air intake, inlet Opens to draw in room air. Closes during oxygen delivery to reduce noise.
Check valve, air intake pressure
relief
Check valve, cylinder inlet Opens during piston retraction to draw in room air and/or oxygen
Check valve, cylinder outlet Opens to deliver mixed gas to the patient
Check valve, exhalation Opens during exhalation to permit exhaled gas into the exhalation system.
Collector vial Collects moisture in the exhaled gas to keep water from occluding the
Exhalation valve Piloted by exhalation solenoid. Opened during exhalation (as required to
Filter, air intake 5 m retention
Filter, expiratory >0.3 m nominal (and larger) retention at flow of 100 L/min
Filter, inspiratory (main flow) >0.3 m nominal (and larger) retention at flow of 100 L/min
Filter, PEEP reservoir >0.3 m nominal (and larger) retention at a flow of 10 L/min
Fitting, oxygen (source) DISS (diameter index system standard) male. DISS female and male, NIST
Heater assembly, exhalation Two 10 W heaters that maintain temperature of exhalation assembly walls
Remains closed during normal operation. Opens at or below 5 cmH
prevent excess pressure in the intake duct.
Prevents rebreathing.
expiratory filter or entering the exhalation system.
maintain PEEP/CPAP). Closed during inspiration.
(non-interchangeable screw thread), Air Liquide, Australian type, and
Dräger oxygen hose kits available, using adapters as necessary.
above condensation point
O to
2
Piston/cylinder assembly
(includes piston/cylinder, motor/
encoder, and optoswitches)
Pump, PEEP Supplies PEEP pilot pressure of 0 to 25 cmH
Regulator, oxygen Output of 33 5 psi (227.46 34.48 kPa) throughout supply pressure
Sensor, exhalation flow A mesh screen with pressure taps on both sides. Pressure drop across
Sensor, oxygen Measures percentage of oxygen in inspired gas (based on partial pressure
Solenoid, autozero, cylinder
pressure transducer
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Includes a brushless DC motor. Can deliver up to 2 L nominal. Clearance of
50 m (0.002 in.) between piston and cylinder wall.
O
2
range of 40 to 90 psi (275 to 620 kPa) (no flow). Includes internal filter
(5 m retention) and outlet filter (>30 m retention). Maximum 3 L/min
bleed.
screen monitored by a differential pressure transducer and used to
determine flow.
of oxygen). Range: 18 to 103% oxygen.
Three-way
De-energized (closed): Except when transducer is autozeroed.
Energized (opened): When transducer is autozeroed (upon power-on, once
a minute for first 10 minutes, then hourly).
2-5
Page 66
2 Theory of operation
.......................................................................................
Table 2-1 Pneumatic component data (continued)
Component Data
Solenoid, autozero, exhalation
pressure transducer
Solenoid, exhalation Three-way
Solenoid, safety valve Three-way
Solenoid assembly, oxygen
(includes low- and high-flow
solenoids, and orifices)
Switch, air intake filter A microswitch located in the air intake manifold, which is actuated when
Three-way.
De-energized (closed): During normal operation.
Energized (opened): When transducer is autozeroed (upon power-on, once
a minute for first 10 minutes, then hourly).
De-energized: Pilots exhalation valve with PEEP pilot pressure. During
exhalation.
Energized: Pilots exhalation valve with inspiration gas. During inspiration.
De-energized (opened): Under software control: Due to a ventilator
inoperative (VENT INOP) condition (including when pressure exceeds 92
O) and during POST. By dedicated circuit: at 115 cmH2O under
cmH
2
hardware control.
Energized (closed): All other times.
High-flow solenoid: Two-way
Energized (opened): High oxygen flow requirements.
De-energized (closed): Other times.
Low-flow solenoid: Two-way
Energized (opened): Low oxygen flow requirements.
De-energized (closed): Other times.
an air intake filter is present.
Thermistor, inspiration manifold Measures inspiration gas temperature.
Thermistor assembly, exhalation Measures temperature of blanket heater.
Transducer, pressure, cylinder Measures cylinder pressure. On pressure solenoid PCB.
Transducer, pressure, exhalation
flow sensor
Transducer, pressure, exhalation Measures pressure of exhaled gas. On pressure solenoid PCB.
Transducer, pressure, inspiration Measures inspiratory pressure and absolute atmospheric pressure. On
Transducer, pressure, oxygen
regulator
Monitors pressures on both sides of flow sensor screen. Flow is determined
from pressure drop. On pressure solenoid PCB.
pressure solenoid PCB.
Measures oxygen source pressure at oxygen solenoid assembly.
2-6
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 67
Theory of operation 2
7-00243
Air intake
check valve
Pressure relief
check valve
Air intake filter
From
safety valve
To/from
piston/cylinder
assembly
.......................................................................................
2.2.1 Gas Inlet System Overview
The gas inlet system, shown in Figure 2-3 and Figure 2-4, entrains room air. It also
delivers externally supplied oxygen to the ventilator and regulates the oxygen to a
pressure usable by the ventilator.
Figure 2-3. Gas inlet system pneumatic diagram
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
2-7
Page 68
2 Theory of operation
Front view
Oxygen
solenoid
assembly
Oxygen
regulator
pressure
transducer
Oxygen
regulator
Oxygen
fitting
Air intake
filter
assembly
Bleed
port
7-00260
Rear view
Oxygen regulator
pressure transducer
Low-flow solenoid
High-flow
solenoid
Oxygen
solenoid
assembly
Mixing
manifold
Muffler
7-00261
.......................................................................................
2-8
Figure 2-4. Gas inlet system (1 of 2)
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 69
Theory of operation 2
Gas inlet system disassembled
Oxygen
fitting
Oxygen
solenoid
assembly
Mixing
manifold
Oxygen
regulator
pressure
transducer
Oxygen
regulator
Pressure
tap
7-00262
Location of gas inlet system
7-00263
.......................................................................................
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 2-4. Gas inlet system (2 of 2)
2-9
Page 70
2 Theory of operation
Warning
.......................................................................................
2.2.1.1 Gas inlet system components
The gas inlet system includes the components described below; these are shown in
Figure 2-5.
•The air intake cover holds the air intake filter element in place and protects it
from contact with liquids.
•The air intake filter, mounted just inside the ventilator cabinet, captures
airborne particles as small as 5 m. The filter is replaced every 1000 hours, or
more often as necessary.
•The air intake manifold provides an intake for the mixing manifold. It has an
outlet, which provides a filtered path to atmosphere for the piston/cylinder. It
also provides a vent for the safety valve. An inlet check valve opens to allow
room air intake, and closes to dampen noise during the oxygen mixing process.
A relief check valve relieves any excess pressure in the intake duct.
•The oxygen fitting and hose connect an external oxygen source (wall or
cylinder) to the ventilator. The choice of available oxygen fittings supports use
of female DISS (diameter index system standard), male DISS, NIST (noninterchangeable screw thread), Air Liquide, Australian type, and Dräger hose
assemblies.
To ensure adequate oxygen delivery to the patient, use Nellcor Puritan Bennettsupplied oxygen hoses only. Use of other oxygen hoses could result in inadequate
or inappropriate oxygen pressures or leaks at the oxygen inlet.
• The oxygen solenoid assembly is a field-replaceable unit (FRU). This assembly
includes the high- and low-flow solenoids, and does not include the oxygen
regulator pressure transducer. Calibration data specific to each solenoid
assembly is recorded in NVRAM; this data must be updated when a new
assembly is installed.
•The oxygen regulator is a FRU, which is replaced every 15,000 hours. The
oxygen regulator assembly does not include the oxygen regulator pressure
transducer.
The oxygen regulator is a self-relieving regulator that maintains a stable output
pressure of 33 5 psi (227.46 34.48 kPa) throughout the supply pressure range
of 40 to 90 psi (275 to 620 kPa) under no-flow conditions. It is factory-calibrated
to obtain 150 L/min STPD through the high-flow orifice. Performing a Reg
altitude calib (Section 4.2.3.2.2) at high altitudes decreases this pressure to a
level appropriate for the altitude at which the calibration is performed.
A sintered bronze 5-m filter inside the regulator prevents particles from
entering. A stainless steel screen outlet filter removes particles of 30 (m) or
larger from the regulated oxygen.
A bleed of up to 3 L/min improves the regulator’s performance and response
time at low flow rates. The regulator’s vent is directed outside the ventilator to
prevent a buildup of oxygen inside the ventilator.
2-10
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 71
Theory of operation 2
Warning
.......................................................................................
Due to excessive restriction of the Air Liquide, Dräger, and Australian hose
assemblies, reduced FIO
(345 kPa) are employed. Make sure oxygen inlet pressure is 50 psi (345 kPa)
when using these hose assemblies, to maintain correct FIO
NOTE:
To prevent depletion of oxygen supply, disconnect oxygen from ventilator when
oxygen is not in use. Any time oxygen is connected, whether or not an oxygenenriched patient mixture is selected, the oxygen regulator bleeds up to 3 L/min.
The regulator has a pressure tap to permit the attachment of a fixture for oxygen
regulator pressure transducer calibration.
The regulator has a pressure drop of 6 to 7 psig when the high-flow oxygen
solenoid is energized (at 150 sL/min).
•The oxygen solenoid assembly includes two two-way solenoids and two critical
flow orifices. Whenever the ventilator is set for an oxygen concentration greater
than 21%, these solenoids/orifices deliver oxygen to the mixing manifold. Only
one of these solenoids is energized with each breath. The larger (high-flow)
solenoid and orifice can deliver higher flows, while the smaller (low-flow)
solenoid and orifice can deliver lower flows. For more information about the
oxygen solenoids and oxygen mixing, see Section 2.6.4.
levels may result when oxygen inlet pressures< 50 psi
2
levels.
2
•The oxygen regulator pressure transducer measures the oxygen pressure at the
oxygen solenoid assembly. These oxygen pressure measurements are used to
monitor the oxygen source pressure to verify its adequacy and to calculate the
flow from the orifices. If the oxygen pressure reading drops below a threshhold
level (determined by real-time atmospheric pressure measurements) for two
consecutive breaths, or if oxygen flow from the high-flow orifice drops below
100 L/min for two consecutive breaths, the ventilator invokes a low oxygen
supply alarm.
• Filtered room air and the precisely controlled oxygen flow pass through the
mixing manifold. This chamber has a muffler, which dampens the sound of the
mixing gases. An upgraded acoustic enhancement kit is available that replaces
the phase one kit (p/n G-062027-00.) The new kit contains improvements to the
oxygen solenoid assembly and the oxygen mixing system which reduce the
sound level of the ventilator’s normal operation. When performing a complete
acoustic upgrade, order the required acoustic kit and an air intake manifold
assembly. If the ventilator was shipped after November 1998, or if a phase one
acoustic kit was installed previously, a new manifold is not required. See
Table 9-2 for ordering information. If you are installing the acoustic
enhancement kit, you also need to install the following assemblies:
• Oxygen Solenoid Assembly (See Section 8.7.1 and Section 8.7.2)
• Mixing Manifold Assembly (See Section 8.7.1 and Section 8.7.2)
• Inspiration Access Panel Kit (See Section 8.6.6)
•Regulator Grounding Harness
• Air Intake Manifold Assembly (See Section 8.6.6)
2-11
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Page 72
2 Theory of operation
Air intake filter assembly
Manifold
Filter
Cover
Pressure relief check
valve (white housing)
Air intake check valve
(blue housing)
7-00264
Oxygen fitting
7-00026
Oxygen hose assembly
7-00027
.......................................................................................
2.2.1.2 System operation
During piston retraction, oxygen and/or room air are drawn into the cylinder. If
oxygen enrichment is selected, oxygen from an external source is regulated, then
supplied by either the low- or high-flow solenoid/orifice. Room air to be used in the
mixture is drawn in through the air intake filter. The gases pass through the mixing
manifold, which dampens the sound of the gases. The gas displaced by piston
movement is vented through the air intake filter also.
During gas delivery, the oxygen system is pressurized, but there is no flow, as the
oxygen solenoids are de-energized (closed).
2-12
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Figure 2-5. Gas inlet system components (1 of 2)
Page 73
Theory of operation 2
Oxygen solenoid assembly
Low-flow
High-flow
solenoid
solenoid
7-00242
Oxygen regulator
Pressure
tap
Bleed
port
7-00230
Oxygen regulator pressure transducer
7-00228
Mixing manifold
(side away from cylinder)
Mixing manifold
(side away from cylinder)
7-00030
Mixing manifold
(side toward cylinder)
Mixing manifold
(side toward cylinder)
7-00031
.......................................................................................
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 2-5. Gas inlet system components (Sheet 2 of 2)
2-13
Page 74
2 Theory of operation
Piston/cylinder
assembly
Inlet
check valve
From mixing
manifold
Outlet
check valve
Motor/
encoder
Exhaust
port
To
cylinder pressure
transducer
To inspiration
manifold
To air intake
manifold
Cylinder pressure
transducer
autozero solenoid
7-00032
.......................................................................................
2.2.2 Piston/cylinder system
The piston/cylinder system, shown in Figure 2-6 and Figure 2-7, draws gas from the
gas inlet system for delivery to the patient. See Section 2.5 for an integrated
description of how the piston/cylinder works in conjunction with the electronics.
2-14
Figure 2-6. Piston/cylinder system pneumatic diagram
2.2.2.1 Component descriptions
The piston/cylinder system includes the components described below; these are
shown in Figure 2-7 and Figure 2-8.
• Gas is delivered to the patient by an aluminum piston/cylinder. The piston,
inside a cylinder, moves backward and forward to draw in and expel gas. The
piston/cylinder is connected via a rack and pinion to a motor/encoder. The
motor moves the piston as directed by the electronics, while feedback from the
encoder is used to monitor the piston’s position.
The piston is mounted on a shaft, which rides on precision linear bearings at
each end of the cylinder. The shaft has a rack gear profile. It mates with a pinion
gear attached to the motor shaft (Figure 2-9). When the motor speed and
direction change, the piston also changes speed and direction. An interrupter
flag located on the rack helps confirm piston position limits, in conjunction
with two optoswitches. The piston/cylinder can deliver up to 2 L gas per breath.
An important element of this piston-based pneumatic system is that no contact
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
occurs between the piston and cylinder wall. The piston/cylinder has no seal;
Page 75
Theory of operation 2
.......................................................................................
instead, there is a minute gap of 50 5 m (0.002 in.) between the two. This gap
is approximately the thickness of a thin sheet of paper.
Because the piston does not contact the cylinder, there is a continuous,
measurable leak while the piston/cylinder is pressurized. To compensate for this
"calibrated leak," the piston moves continuously within the cylinder. But,
because the piston and cylinder have no contact, friction between the piston
and cylinder is eliminated, resulting in reduced wear of piston/cylinder
assembly parts, reduced electrical requirements, and enhanced responsiveness.
The piston/cylinder gap is maintained at all possible piston positions. Each new
piston/cylinder assembly comes with several calibration constants specific to
that particular assembly. These constants represent the gaps at various points
corresponding to different piston positions. This data must be entered into
NVRAM when a new assembly is installed.
• Optoswitches are read by the motor controller circuit for piston initialization
purposes during POST and for fault detection purposes during ventilation. An
optoswitch is closed when the rack flag breaks the infrared light beam
(Figure 2-9).
•The motor/encoder is an FRU composed of an optical encoder attached to a
brushless DC motor.
The high-torque, direct-drive motor controls piston movement, under direction
of the motor controller circuit on the controller PCB and the motor drive circuit
on the BBU PCB. Three rotations of the motor shaft correspond to a 2.6 L
volume displacement.
The optical encoder, on top of the motor, along with the motor controller circuit
(on the controller PCB), monitors the motor position (Figure 2-10). The optical
encoder incorporates an emitter section, two codewheels, and a detector section.
Each codewheel has a pattern photographically plated on it. As the motor shaft
revolves, the codewheels rotate with respect to the emitter and photodetector
sections, causing the light beam to be interrupted by the pattern of spaces and
bars on the codewheels. The detectors are positioned such that a light period on
one photodetector corresponds to a dark period on the other photodetector. The
optical encoder was designed so the final outputs from the two photodetectors
(channels) are in quadrature with each other (90 degrees out of phase). Using
the photodetector outputs, a decoder in the motor controller circuit tallies
"quadcounts" and can determine the piston’s direction and speed.
•The cylinder inlet and outlet check valves are one-way valves located at the
end of the piston/cylinder. The inlet check valve opens to let mixed gas fill the
cylinder during piston retraction; it seals to prevent the cylinder contents from
escaping through the gas inlet system during gas delivery. The outlet check valve
lets gas exit the cylinder during gas delivery; it seals during piston retraction.
The inlet check valve has a translucent (clear) leaf in a white housing, while the
outlet check valve has a translucent (clear) leaf in an blue housing.
•The cylinder pressure transducer (on the pressure solenoid PCB), a gauge type,
measures the cylinder pressure. The ventilator uses these cylinder pressure
readings in various calculations, including cylinder leak, compliance
compensation, during oxygen mixing, atmospheric pressure, and PEEP
maintenance. The transducer is autozeroed via an autozero solenoid (see below).
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
2-15
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2 Theory of operation
.......................................................................................
•The cylinder pressure transducer autozero solenoid is a three-way valve. It
autozeroes the transducer at power-on, once a minute for the first 10 minutes,
and hourly thereafter. The transducer is autozeroed by venting to atmosphere. A
muffler reduces the noise from the venting gas.
2.2.2.2 Operational description of piston/cylinder system
During piston retraction, the piston draws air and/or oxygen into the cylinder
through the opened inlet check valve. The optical encoder (part of the motor/
encoder) reports to the motor controller circuit the motor shaft position. The motor
controller circuit, in turn, determines the piston position and velocity. The
retraction velocity is controlled to draw in 150 L/min nominal. Gas behind the
piston (mostly room air) is vented through the air intake filter to atmosphere.
During gas delivery, the motor drives the piston forward as required to meet the
ventilator settings and patient effort. The gas flows through the opened outlet
check valve and the inspiration manifold toward the patient.
At power on, POST verifies the piston’s return, home, and full-stroke positions
(Section 2.6.1). For a complete, sequential description of breath delivery, see
Section 2.6.
2-16
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 77
Theory of operation 2
Motor/encoder
Piston/
cylinder
Optoswitches
Cylinder pressure
transducer
autozero solenoid
Front view
7-00033
Side view
Inlet
check valve
(translucent leaf/
Outlet
check valve
(translucent
leaf/blue
white housing)
housing)
7-00034
Piston/cylinder system installed
Piston/
cylinder
system
7-00035
.......................................................................................
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 2-7. Piston/cylinder system
2-17
Page 78
2 Theory of operation
Piston/cylinder assembly
7-00036
Motor
Encoder
Pinion
Motor/encoder assembly
gear
7-00037
Cylinder pressure transducer
autozero solenoid
7-00038
.......................................................................................
2-18
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Figure 2-8. Piston/cylinder system components (1 of 2)
Page 79
Theory of operation 2
Cylinder outlet check valve
(blue housing)
7-00040
Cylinder inlet check valve
(white housing)
7-00039
O
p
t
o
s
w
i
t
c
h
e
s
E
n
d
o
p
t
o
s
w
i
t
c
h
H
o
m
e
o
p
t
o
s
w
it
c
h
NOTE: The home and end optoswitches are identical
(P/N G-061255-00)
7-00041
Optoswitches installed
Optoswitches
installed
7-00035
.......................................................................................
Piston/cylinder system components (Sheet 1 of 2)
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 2-8. Piston/cylinder system components (2 of 2)
2-19
Page 80
2 Theory of operation
Optoswitch
Flag
Rack
Pinion
gear
7-00043
Decoder
Codewheel B
Codewheel A
Direction of travel
Velocity of travel
CH. A
CH. B
Emitter
section
Ch. B
detector
Ch. A
detector
Reverse
CH. A
CH. B
Quadrature
pulses
Velocity =
number of quadrature pulses
time period
CH. A
CH. B
Forward
7-00044
.......................................................................................
Figure 2-9. Motor/encoder pinion gear and rack
2-20
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Figure 2-10. Operation of optical encoder
Page 81
Theory of operation 2
Thermistor
To air
intake
filter
Safety
valve
Oxygen
sensor
Exhalation
solenoid
From
outlet
check
valve
To
inspiratory
filter
To
exhalation
valve
From
PEEP
reservoir
7-00045
.......................................................................................
2.2.3 Inspiration manifold system
The inspiration manifold system, shown in Figure 2-11 and Figure 2-12, provides a
conduit between the cylinder and ventilator. It also senses the temperature and
oxygen percentage of the delivered gas. It includes a safety valve to vent excessive
pressure. It includes a pressure tap for the inspiration pressure transducer.
Figure 2-11. Inspiration manifold system pneumatic diagram
2.2.3.1 Component descriptions
The inspiration manifold system includes the components described below; these
are shown in Figure 2-13.
•The inspiration manifold provides a conduit between the cylinder and
ventilator outlet. A tap in the manifold connects to the inspiration pressure
transducer (on the pressure solenoid PCB). The exhalation valve port permits
pressure to be supplied to the exhalation valve (via the exhalation solenoid)
during inspiration. The inspiration port permits gas delivery (through a silicone
tube) to the ventilator outlet. The inspiration port incorporates a 22-mm ISO
male conical connector for attachment of the inspiration filter and inspiration
limb of the patient tubing system.
•The oxygen sensor is a galvanic sensor that measures the percentage of oxygen
delivered from the cylinder. It produces a voltage proportional to the partial
pressure of oxygen in the delivered gas. The sensor is accurate to ± 3% of the
reading. For ventilators equipped with software revision H or later, the % O
displayed if no alarm is active and the display of the oxygen sensor reading is
enabled. The ventilator alarms if the sensed oxygen percentage is not within
± 10 percentage points of the setting.
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
•The inspiration manifold thermistor measures the inspiration gas
temperature; this data is used in breath delivery calculations and oxygen
percentage correction.
2
is
2-21
Page 82
2 Theory of operation
.......................................................................................
•The inspiration pressure transducer (on the pressure solenoid PCB), an
absolute type, measures pressure at the inspiration manifold. When made with
the safety valve open, this pressure reading is used to calculate atmospheric
pressure. The calculated inspiration pressure value is a function of the
inspiration pressure transducer reading minus the atmospheric pressure.
•The exhalation Positive End Expiratory Pressure/Continuous Positive
Airway Pressure (PEEP/CPAP) solenoid is a three-way valve that selects the
pneumatic source for piloting the exhalation valve. The solenoid is energized
during all inspirations to provide exhalation valve pilot pressure via the
inspiration manifold. When de-energized (during exhalation), the valve uses the
pressure from the PEEP pump as its pilot source.
•The safety valve functions primarily to relieve overpressure in case of ventilator
failure or an occlusion, and to allow patient breathing in case of total ventilator
failure, such as complete loss of power. It has other functions; these are detailed
in Section 2.8.3. The normally open valve is opened either under software
control or via a dedicated circuit, as a backup.
The safety valve includes a solenoid actuator that is normally energized (closed)
while the ventilator operates. The closed valve prevents gas from escaping to the
room and thus allows the ventilator to deliver gas through the inspiration
manifold to the patient. When the solenoid is de-energized, and the safety valve
poppet lifts open via the return spring, opening the ventilator breathing circuit
to atmosphere.
2.2.3.2 Operational description
During the breath delivery phase, mixed gas from the cylinder flows through the
inspiration manifold toward the patient. This inspiration gas also flows through the
exhalation solenoid; this gas pressure pilots the exhalation valve closed during
inspiration.
During exhalation, the exhalation solenoid routes PEEP pilot pressure to pilot the
exhalation valve open as necessary to maintain PEEP.
If the software places the ventilator into the safety valve open (SVO) state (for
example, if system pressure exceeds 92 cmH
pressure exceeds 115 cmH
can then breathe room air. See Section 2.8 for a description of the SVO state.
O, the safety valve solenoid is de-energized. The patient
2
O) or if either the cylinder or patient
2
2-22
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 83
Theory of operation 2
Inspiration manifold assembly disassembled
Thermistor
Inspiration
manifold
Oxygen
sensor
Poppet
assembly
Safety valve
solenoid
7-00235
Location of inspiration manifold
Inspiration
manifold assembly
7-00241
.......................................................................................
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 2-12. Inspiration manifold system
2-23
Page 84
2 Theory of operation
Thermistor port
Exhalation
valve port
Pressure tap
(to inspiration
pressure
transducer)
Inspiration
port
Inspiration manifold
7-00042
Oxygen sensor
7-00222
Oxygen sensor in adapter
7-00233
Exhalation solenoid
7-00088
.......................................................................................
2-24
Figure 2-13. Inspiration manifold system components (1 of 2)
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 85
Theory of operation 2
Safety valve
7-00089
Safety valve poppet
assembly (open)
7-00090
Safety valve poppet
assembly (closed)
7-00091
.......................................................................................
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 2-13. Inspiration manifold system components (2 of 2)
2.2.4 Patient system
The patient system, shown in Figure 2-14, includes those "external" components
that carry gas from the ventilator to the patient, control patient ventilation, and
isolate the ventilator from the patient with bacteria filters. The patient system also
heats and humidifies delivered gas if a humidification device is installed.
The patient system includes the components described below; these are shown in
Figure 2-15. For information on the patient tubing circuits offered by Nellcor
Puritan Bennett, consult the product catalog.
2-25
Page 86
2 Theory of operation
Inspiratory
filter
To exhalation
check valve
Expiratory
filter
To patient
Collector
From
inspiration
manifold
vial
7-00092
.......................................................................................
Figure 2-14. Patient system pneumatic diagram
•The inspiratory (main flow) filter (the Nellcor Puritan Bennett D/Flex or
Re/Flex Filter) helps protect the patient from contamination by the gas supplies,
and helps protect the ventilator from contamination by the patient system. The
filter captures particles of 0.3 m nominal and larger at a flow of 100 L/min with
99.97% efficiency. It has 22-mm ISO conical connections.
•The ventilator breathing circuit provides a conduit for gas flowing between the
ventilator and patient. It is composed of two smooth-bore "flex" tubes, the
inspiration and exhalation tubes. The inspiration tube carries gas from the
ventilator to the patient, while the exhalation tube carries exhaled gas from the
patient to the ventilator.
•The humidification device moistens the gas delivered to the patient so it more
closely approximates gas inspired through the nasal passages.
•The collector vial collects moisture in the exhaled gas to help keep water out of
the exhalation system, in particular the expiratory filter.
•The expiratory filter helps prevent bacteria in the patient’s exhaled gas from
being vented to room air and reduces cross-contamination of the ventilator. The
filter captures particles of 0.3 m nominal and larger at a flow of 100 L/min with
99.97% efficiency. It has 22-mm ISO conical connections.
Exhaled gas flows in through the filter’s center, then through the hydrophobic
paper toward the filter’s sides, and out the filter outlet. Liquid water drains into
the collector vial.
2-26
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 87
Theory of operation 2
Expiratory filter
7-00093
Inspiratory filter
7-00094
Collector vial
7-00095
Humidification device
7-00096
Ventilator breathing circuit
7-00097
.......................................................................................
Figure 2-15. Patient system components
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
2-27
Page 88
2 Theory of operation
Heater
assembly
Exhalation
check valve
Exhalation
pressure transducer
autozero solenoid
From
expiratory
filter
From exhalation
solenoid
Exhalation
flow sensor
Exhalation
valve
Thermistor
assembly
7-00098
.......................................................................................
2.2.5 Exhalation system
The exhalation system, shown in Figure 2-16 and Figure 2-17, controls and
monitors the flow of the patient’s exhaled gas.
2-28
Figure 2-16. Exhalation system pneumatic diagram
2.2.5.1 Component descriptions
The exhalation assembly includes these components; these are shown in
Figure 2-18.
•The expiratory filter housing retains the expiratory filter.
•The exhalation check valve is a one-way device that prevents the patient from
rebreathing exhaled gas. It is opened by the pressure of exhaled gas, resulting in
exhaled gas flowing through the exhalation system. When the patient stops
exhaling, the valve closes.
•The exhalation pressure transducer (on the pressure solenoid PCB), a gauge
type, measures the exhalation system pressure. The ventilator uses these
exhalation pressure readings in its breath delivery calculations. The transducer is
autozeroed via an autozero solenoid (see below).
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
•The exhalation pressure transducer autozero solenoid is a two-way valve. It
autozeroes the transducer at power-on, once a minute for the first 10 minutes,
and hourly thereafter. The transducer is autozeroed by venting to atmosphere. A
muffler reduces noise and filters the venting gas.
• The blanket-type exhalation heater assembly contains two 10 W heaters that
wrap around exhalation system tubing. One is located just before the exhalation
valve. The other is located at the exhalation flow sensor. The heaters maintain
the temperature of the exhalation assembly above the condensation point to
prevent “rain-out” in the exhalation assembly.
Page 89
Theory of operation 2
Exhalation
pressure
transducer
autozero
solenoid
Expiratory
filter
Exhalation system
Exhalation
check valve
assembly
Exhalation
flow sensor
assembly
Exhalation
valve
assembly
housing
7-00099
Exhalation
Location of exhalation system
system
7-00100
.......................................................................................
•The exhalation thermistor assembly provides the electronics with temperature
feedback. An analog circuit regulates the current to the heater assembly
accordingly to maintain the heater at 50
during exhalation. Feedback from one thermistor, which is in contact with the
cross tube heater, is used to control the temperature to both heaters. The second
thermistor, which is in contact with the exhalation flow sensor housing,
provides a backup to monitor the heater temperature.
•The exhalation valve assembly, a pneumatically actuated valve, closes during
inspiration to prevent delivered gas from venting to the atmosphere. During
exhalation, it opens sufficiently to maintain the operator-selected PEEP. The
exhalation valve is piloted by the exhalation solenoid (in the PEEP system). The
valve has an area ratio of 1.4:1. For example, if the PEEP system provides a pilot
pressure of 10 cmH
O, then the patient must produce a pressure of 14 cmH2O to
2
open the valve. At circuit pressures below PEEP, the valve remains closed; at
pressures higher than PEEP, the valve is opened.
•The exhalation flow sensor provides flow information on a patient’s exhaled
gas. The sensor is actually a fine mesh screen with pressure taps on both sides.
The pressure taps connect to a differential pressure transducer on the pressure
solenoid PCB. Because the flow across the screen is proportional to the pressure
drop across it, the electronics can use these pressure measurements to determine
exhaled flow.
o
C, thereby eliminating condensation
•The exhalation flow sensor pressure transducer (on the pressure solenoid
PCB), a differential type, monitors the exhaled flow. The transducer works in
conjunction with the exhalation flow sensor, described above.
Figure 2-17. Exhalation system
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
2-29
Page 90
2 Theory of operation
Expiratory filter housing
7-00101
Exhalation check valve assembly
Exhalation
pressure
transducer port
7-00102
Exhalation pressure transducer
autozero solenoid
7-00103
Exhalation check valve assembly
Knob pointed up
disassembled
7-00104
Exhalation heater assembly with retaining clips
Cross tube
heater
and clip
Flow sensor
heater
and clip
7-00105
.......................................................................................
2-30
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Figure 2-18. Exhalation system components (1 of 2)
Page 91
Theory of operation 2
Exhalation thermistor assembly
7-00107
Exhalation valve assembly
7-00106
Exhalation flow sensor
with tube assembly
7-00108
.......................................................................................
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 2-18. Exhalation system components (2 of 2)
2.2.5.2 Operational description
During exhalation, patient gas enters the exhalation system through the expiratory
filter. The pressure of the exhaled gas causes the check valve to open. The gas then
flows toward the opened exhalation valve. (The valve was opened by the exhalation
solenoid, sufficiently to maintain the operator-selected PEEP.) The exhaled gas flows
through the opened valve and is vented through the ventilator outlet.
Heaters heat the exhalation assembly walls to minimize moisture in the assembly,
while thermistors provide the ventilator with temperature feedback. The exhalation
flow sensor and pressure transducer provide readings used in breath delivery
calculations.
2-31
Page 92
2 Theory of operation
PEEP pump
To
exhalation
system
Jet venturi
Filter
PEEP reservoir
7-00110
restrictor
.......................................................................................
2.2.6 PEEP/CPAP system
The PEEP/CPAP system, shown in Figure 2-19 and Figure 2-20, regulates pressure to
the exhalation valve as required to maintain PEEP/CPAP during exhalation.
Figure 2-19. PEEP/CPAP system pneumatic diagram
2.2.6.1 Component descriptions
The PEEP/CPAP system includes these components; these are shown in Figure 2-21.
•The filter removes particles of 0.3 m nominal from the air to be compressed by
the PEEP pump.
•The PEEP reservoir has three chambers. Air is drawn into the chamber 1, and
from there into the PEEP pump. This chamber reduces pump noise. Air
compressed by the pump is then forced into chamber 2, which reduces pressure
fluctuations. Air exits chamber 2 through a jet venturi, which drops the pressure
to the desired PEEP/CPAP pilot pressure. Chamber 3 acts like a capacitor,
reducing pressure fluctuations and preventing PEEP undershoot.
•The PEEP pump, a vibrating-armature pump, generates PEEP/CPAP pilot
pressure. Gas compressed by the PEEP pump fills a reservoir. The pump is
controlled by pulse-width modulating the pump drive voltage.
2.2.6.2 System operation
If PEEP is selected, the pump is turned on, drawing room air through the filter, into
the reservoir, and toward the pump. The pump compresses the air as required to
supply PEEP requirements. The compressed gas is then drawn into a separate
chamber of the reservoir. This gas exits through a jet venturi, which reduces the
pressure to the desired PEEP/CPAP pilot pressure. It then enters a final chamber,
which provides further damping of pressure oscillations. During exhalation, the gas
2-32
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 93
Theory of operation 2
PEEP/CPAP system
Tubes crossed
PEEP reservoir
PEEP pump
Filter
7-00111
Location of PEEP/CPAP system
PEEP/CPAP system
7-00112
.......................................................................................
flows through the de-energized exhalation solenoid, which pilots the exhalation
valve open as required. During inspiration, the pump remains on, but the
exhalation valve is piloted by the inspiratory pressure, not PEEP pilot pressure.
Feedback from the exhalation pressure transducer helps the ventilator maintain the
PEEP/CPAP at the selected value. Even with a ventilator breathing circuit leak of up
to 10 L/min, PEEP/CPAP can be maintained. The ventilator compensates by
adjusting the piston/cylinder output.
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 2-20. PEEP/CPAP system
2-33
Page 94
2 Theory of operation
PEEP reservoir
To pump
inlet
From
pump
outlet
7-00113
To exhalation
solenoid
Outlet
Inlet
PEEP pump
7-00114
Filter
7-00115
.......................................................................................
2-34
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Figure 2-21. PEEP/CPAP system components
Page 95
Theory of operation 2
Main ventilator head harness
7-00116
Main ventilator head harness installed
7-00124
.......................................................................................
2.3 Electrical system
The 700 Series Ventilator System electrical system includes the following:
• Power assembly, including power input components, the power supply, the
battery backup (BBU) PCB, and the power assembly fan
• Internal battery
• External battery
• Pressure solenoid PCB
• Controller PCB
• User interface, including the user interface PCB, the keyboard, and the knob/
encoder
• Miscellaneous parts including the speaker, piezo alarm, main fan, air flow
thermistor assembly, and air intake manifold sensor
• Communications option assembly if the Communicatons option is installed in
the ventilator
The ventilator head harness (Figure 2-22) interconnects many of these parts.
Interrelationship of components is illustrated in Figure 2-23. For a discussion of
electropneumatic parts, or electrical parts used in close conjunction with
pneumatic parts, see Section 2.2. For wiring details, see Figure 2-24.
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Figure 2-22. Main ventilator head harness
2-35
Page 96
2 Theory of operation
7-00117B
lCDs:
-BAR GRAPH
-KEY CONFIRMATION
-VENTILATOR STATUS
DECODER/
QUADRATURE
PEEP DRIVE
CIRCUIT
POWER INPUT
COMPONENTS
POWER
SUPPLY
INTERNAL
BATTERY
EXTERNAL
BATTERY
BBU PCB
BATTERY
CHARGER
CIRCUIT
BATTERY BACKUP CIRCUIT
VOLT/TEMP
MONITOR
MOTOR DRIVE
CIRCUIT
UI PCB
4 X 20 LCD
(MESSAGE
WINDOW)
LCDs (12)
(WINDOWS)
KNOB/
ENCODER
KEYBOARD
CONTROLLER PCB
I/O
REGISTERS
VENTILATOR
INOPERATIVE
CIRCUIT
KEYBOARD
CONTROLLER
CPU AND
MEMORY
NVRAM
MOTOR
CONTROLLER
CIRCUIT
CPU AND
MEMORY
EXTERNAL
WATCHDOG
CIRCUIT
REAL-TIME
CLOCK
REAL-TIME
CLOCK
SERIAL COMM
PORT
OPTOSWITCH
CIRCUIT
BD SIDE
UI SIDE
OXYGEN
PERCENTAGE
SENSOR
OXYGEN
PRESS
TRANSDUCER
PRESSURE SOLENOID PCB
PRESS
TRANSDUCER/
CIRCUIT
INTERFACE
SOLENOIDS:
-OXYGEN
-EXH PRESS AUTOZERO
TRANSDUCER
-CYLINDER PRESS AUTOZERO
TRANSDUCER
-EXH PILOT CONTROL
SOLENOID
DRIVE
CIRCUIT
THERMISTOR/
INTERFACE
CIRCUIT
THERMISTORS:
-INSP
-MANIFOLD
-AIR FLOW
-EXH ASSY
SAFETY
VALVE
SOLENOID
OPTOSWITCHES
SAFETY
VALVE
CIRCUIT
TACHOMETER
CIRCUIT
ALARM DRIVE
CIRCUIT
SERIAL
EPROM
HEATERS
HEATER
CIRCUIT
FAN CIRCUIT
PEEP PUMP
FAN
+24 V
+24 V
+24 V
+24 V
COMMUNICATIONS
OPTION PANEL
(IF OPTION INSTALLED)
MOTOR/
ENCODER
BACKUP ALARM
DRIVER CIRCUIT
.......................................................................................
2-36
Figure 2-23. 700 Series Ventilator System block diagram
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 97
Theory of operation 2
CONTROLLER
90-PIN
EURODIN
40-PIN
J9
G-060514-00
J2
14-PIN
To user
interface
Exhalation
solenoid
Main
fan
PEEP
pump
Motor/
encoder
Exhalation
pressure
transducer
autozero
solenoid
J4
J1
PRESSURE
SOLENOID PCB
Cylinder
pressure
transducer
autozero
solenoid
Oxygen
regulator
End
optoswitch
Home
optoswitch
Safety
valve
5-PIN
60-PIN
J1
16-PIN
J2
LCD PCB
USER
16-PIN
J3
INTERFACE PCB
G-060514-00
To
ventilator
head
G-060846-00
Grommet
UI/ventilator
head
cable assy
G-060100-00
To BBU PCB J7
To
controller
PCB J4
J4
Rotary
encoder
To BBU PCB J5
Oxygen
sensor
Air flow
thermistor
Inspiration
thermistor
G-060104-00
Main
Piezo alarm
Speaker
VENTILATOR HEAD
To
exhalation
thermistor assy
To
exhalation
heater assy
Air intake
manifold
50-PIN
J1
To keyboard
J4
Oxygen
regulator
pressure
transducer
J10
- - +
ventilator
head
harness
Air intake
filter switch
SERIAL PORT
PCB
To user
interface PCB
J1
26-PIN
J2
26-PIN
J1
4-PIN
J2
3-PIN
J3
3-PIN
J4
SERIAL PORT
SERIAL PORT
COMMUNICATIONS
OPTION PCB
To remote alarm
To EasyNeb
G-061777-00
G-061780-00
Nurse call port
G-061779-00
Backup alarm driver PCB
.......................................................................................
7-0018B
Figure 2-24. Wiring diagram (1 of 2)
2-37
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
Page 98
2 Theory of operation
REAR WALL
G-060846-00
Grommet
BBU PCB
40-PIN
J7
Power supply fan
G-060116-00
RED
BLK
G-060111-00
Power
Circuit
Line
BLU & BRN
BRN
G-060110-00
G-061086-00
G-060110-00
G-060117-00
G-060830-00
G-060113-00
G-060829-00
GRN/YEL
POWER SUPPLY
VIEW FROM REAR
BLU
GRN/YEL
BLU
BLKBLU BRN
REDBLU BRN
Terminal
J2
INT BAT J6
RED (1)
RED (2)
BLK (2)
External battery
INTERNAL BATTERY COMPARTMENT
To
motor/encoder
To
controller PCB
F1
10A
Supply
J1
Power switch
Motor
J5
J3
block
Terminal
block
Power
switch
Circuit
breaker
BRN BRN
BRN BLU
Internal battery
INT
BAT
EXT
BAT
J4
Power
supply
fan
switch
filter
breaker
Power supply
BLU
BLU
BRN
RED (3)
GRN/YEL
Line
filter
BLK (3)
BLK (3)
F6
15A
7-00119
RED
BLK
.......................................................................................
Figure 2-24. Wiring diagram (2 of 2)
2-38
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
Page 99
Theory of operation 2
Power supply fan
Baffle
BBU PCB
Power supply
Side view
BBU PCB/
ventilator head
harness
7-00125
Circuit breaker
Potential equalization
External battery
Line filter
Power switch
connector
Front view
(power input components)
connector
7-00126
.......................................................................................
2.3.1 Power assembly
As illustrated in Figure 2-25, the power assembly includes power input components,
the BBU PCB, and a recirculating fan. The harnesses shown in Figure 2-26
interconnect the parts of the power assembly. The ventilator head/power supply
harness (Figure 2-27) connects the power assembly to the rest of the ventilator.
Figure 2-25. Power assembly (1 of 2)
G-061875-00 Rev. B (10/09) 700 Series Ventilator System Service Manual
2-39
Page 100
2 Theory of operation
Rear view
BBU PCB/
ventilator head
harness (to
7-00127
controller PCB)
Power assembly
pulled out
7-00128
.......................................................................................
2-40
Figure 2-25. Power assembly (2 of 2)
700 Series Ventilator System Service Manual G-061875-00 Rev. B (10/09)
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