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SLE5000
Model J service manual
Version 4.3.1 & 4.3.2 software
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Software/Manual application Information:
Note: This manual is to be used only with models J ventilators using the following
software version:
Version 4.3.1 & 4.3.2
Contact Information:
SLE Limited
Twin Bridges Business Park
232 Selsdon Road
South Croydon
Surrey CR2 6PL
Telephone: +44 (0)20 8681 1414
Service Fax: +44 (0)20 8649 4517
E-mail: [email protected]
Web site: www.sle.co.uk
All rights reserved. No part of this publication may be reproduced, stored in any retrieval system, or transmitted
in any form or by any means, electronic, mechanical, photocopy, recording or otherwise, without prior
permission of SLE. © Copyright SLE 30/09/2016.
(E-mail’s should be addressed to the Service Manager)
Manual: SM31 Issue 3
SLE Part Nº: N6645/J
Revision history.
Issue 3: CR 371, 451 & 586. ECN167.
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Page 3
Contents
1. Warnings and Cautions .............................................................................................10
1.1. Warnings ........................................................................................................10
1.2. Cautions .........................................................................................................11
2. Principles of Operation ..............................................................................................14
2.1. Electronic System...........................................................................................14
2.2. Pneumatic System .........................................................................................15
3. Description of Symbols .............................................................................................18
4. Equipment list ...........................................................................................................22
5. ENGMODE ...............................................................................................................24
5.1. Accessing the Calibration Programs ..............................................................24
5.2. Ventilator Calibration Program .......................................................................26
5.3. O2 & Flow System Calibration........................................................................27
5.4. Reset Elapsed Time.......................................................................................28
5.5. Language Selection........................................................................................28
5.6. Activation of Language Selection Program form User Interface.....................29
5.7. Exit .................................................................................................................29
5.8. Touch Screen Calibration Program................................................................30
6. Component Replacement Procedure ........................................................................32
7. Preparing the SLE5000 .............................................................................................33
8. Component Replacement (Electronic unit) ...............................................................35
8.1. N6631/21/CF/50 Compact Flash Card...........................................................35
8.2. N6631/LX800 PC Board.................................................................................35
8.3. N6634/OEM2 CAN Card ................................................................................36
8.4. N6631/2216 Serial controller (Touch screen).................................................36
8.5. L0275/OEM2 Computer/Display Control assembly........................................37
8.6. A0763/02/M Control/Monitor Board. ...............................................................38
8.7. M0915 Power Supply Unit..............................................................................39
8.8. M0901 Batteries .............................................................................................40
8.9. A0761 Transducer PCB Assembly.................................................................41
8.10. N6631/13 Inverter PCB ................................................................................42
8.11. N6631/02 LCD & N6631/05 Touch Screen ..................................................43
9. Component Replacement (Pneumatic unit) ..............................................................45
9.1. Duckbill and conical filters..............................................................................45
10. A0763/02/M Monitor and control board ...................................................................56
10.1. A0763/02/M board programmable devices...................................................56
10.2. A0763/02/M Board Hardware Identifier........................................................57
11. Electrical Safety Testing of the SLE5000 ................................................................61
12. PSU Testing ............................................................................................................65
13. Ventilator Power up and Power down. ....................................................................68
14. Back-up Battery Charging .......................................................................................69
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14.1. Battery indicator............................................................................................69
15. Extended storage ....................................................................................................71
16. Maintenance and Overhaul .....................................................................................74
16.1. Preventative Maintenance Kit.......................................................................74
16.2. 12 & 36 month preventative maintenance procedure...................................76
16.3. 24 month and 48 month overhaul procedures ..............................................84
16.4. 24 month / 10,000 hour overhaul procedure.................................................86
16.5. 48 month / 20,000 hour overhaul procedure.................................................94
16.6. 48 month overhaul procedure using N9410/48/G overhaul kit......................96
17. Calibration Procedure for V4.3.1 & V4.3.2 software ................................................108
17.1. Equipment required for calibration................................................................108
17.2. Preliminary Inspection before calibration......................................................109
17.3. Pneumatic set up..........................................................................................110
17.4. Calibration of Controller and Monitor subsystems........................................113
17.5. Controller “Block and Leak” pressure sensor calibration ..............................115
17.6. Controller Blender Pressure Sensor zeroing and Input pressure reg. trim ...116
17.7. Mean Jet Pressure Regulator Calibration.....................................................117
17.8. Forward Jet Pressure Regulator Calibration.................................................119
17.9. Reverse Jet Pressure Regulator Calibration.................................................120
17.10. Time Constant for pressure measurement waveform.................................121
17.11. Wave shaping for leading and trailing edge of insp. phase ........................121
17.12. O2 System Calibration................................................................................123
17.13. Flow System Calibration .............................................................................123
17.14. Pressure Triggering Verification..................................................................123
17.15. Gas Fail Detection Verification....................................................................123
17.16. Blender and Oxygen Monitoring Verification...............................................124
17.17. Soak Test....................................................................................................125
17.18. Battery Charge Verification.........................................................................126
17.19. Total Power Fail Alarm Test........................................................................126
17.20. Pressure Calibration Verification.................................................................127
18. Functional Testing ...................................................................................................130
18.1. Ventilator setup.............................................................................................130
19. Trouble Shooting Chart ...........................................................................................162
20. Software Version History .........................................................................................172
21. Oxygen Calibration Routines ...................................................................................174
21.1. One point or 100% Oxygen system calibration.............................................174
21.2. Two point or 21% & 100% Oxygen system calibration.................................174
22. Alarms .....................................................................................................................176
22.1. Alarm Protocols.............................................................................................176
22.2. Alarm Sounds ...............................................................................................176
22.3. Alarm Descriptions and actions to be taken..................................................177
22.4. Software and System Fail Protocols.............................................................196
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23. Cleaning, disinfection and sterilization ....................................................................197
23.1. Preparation of a new ventilator.....................................................................197
23.2. Cleaning and disinfection of an in-service ventilator ....................................197
23.3. Cleaning method ..........................................................................................198
23.4. Disinfection method......................................................................................199
23.5. Sterilization method......................................................................................200
24. Technical Specification ...........................................................................................201
24.1. Operating Modes Conventional Ventilation..................................................201
24.2. HFO Ventilation............................................................................................203
24.3. Measurement ...............................................................................................207
24.4. Exhalation Block Port Jet Sizes....................................................................208
24.5. Alarms ..........................................................................................................209
24.6. Patient circuits..............................................................................................210
24.7. Outputs.........................................................................................................211
24.8. Gas supplies.................................................................................................212
24.9. Power, Dimensions, Classification etc..........................................................213
24.10. Classification ..............................................................................................213
24.11. Environmental Storage Conditions.............................................................213
25. EMC compliance .....................................................................................................214
25.1. Electromagnetic immunity ............................................................................215
25.2. Recommended separation distances between portable and mobile RF
communications equipment and the SLE5000......................................................217
26. Ventilator labelling ...................................................................................................218
27. Electrical Block Diagram .........................................................................................220
28. L0280/KV Pneumatic Unit Layout & Schematic ......................................................221
28.1. Layout ..........................................................................................................221
28.2. Schematic ....................................................................................................222
29. Main Loom Circuit Diagram ....................................................................................223
30. L0275/OEM2 Assembly Schematic ........................................................................224
31. A0761 circuit diagram .............................................................................................226
31.1. Transducer PCB Assembly ..........................................................................226
32. A0763/02 circuit diagrams ......................................................................................228
32.1. Micro Controller............................................................................................228
32.2. Conventional Valve Drive.............................................................................229
32.3. Power Distribution And Hardware Identifier..................................................230
32.4. Analogue Valve Drive / Non Volatile Memory / Interboard Comms..............231
32.5. High Speed Valve Drive ...............................................................................232
32.6. Analogue Data acquisition/Monitor port........................................................233
32.7. Control & Monitor, PCB PSU Circuit.............................................................234
32.8. Control & Monitor, Micro Non-isolated..........................................................235
32.9. Control & Monitor, Micro Isolated.................................................................236
32.10. Control & Monitor, Analog Isolated.............................................................237
32.11. Control & Monitor, Alarm Controller............................................................238
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33. Illustrated Parts List .................................................................................................240
Ventilator assembly ...............................................................................................242
Base plate and side door assembly ......................................................................249
Front facia assembly .............................................................................................251
Electronic module .................................................................................................253
Pneumatic module ................................................................................................273
DISS air and oxygen fittings ..................................................................................285
34. Modifications ...........................................................................................................288
34.1. Equipotential stud modification.....................................................................288
34.2. Modification A as per SI120401 - (Bypassing of oxygen volume chamber)..290
34.3. Modification 1, 2 & 4 as per EMC upgrade...................................................292
34.4. Contents of N9020/000/KIT kit......................................................................293
34.5. Equipment list ...............................................................................................293
34.6. Checking the modification status. .................................................................295
34.7. EMC upgrade procedure...............................................................................296
34.8. Modification 1 (MOD1)..................................................................................298
34.9. Modification 2 (MOD2)..................................................................................300
34.10. Modification 4 (MOD4)................................................................................301
34.11. Re-assembly and testing ............................................................................302
34.12. MOD identification.......................................................................................302
34.13. Re-assembly...............................................................................................302
Appendix 1. Calibration Checklist ..................................................................................305
Appendix 2. Check list ...................................................................................................313
Appendix 3. TB & SI Index ............................................................................................318
35. Technical Bulletin & Service Information Letters .....................................................318
35.1. Service Information letters............................................................................318
35.2. Technical Bulletins........................................................................................320
Appendix 4. ...................................................................................................................322
36. RS232 .....................................................................................................................322
36.1. Warnings for RS232......................................................................................322
36.2. Location of RS232 Port.................................................................................322
36.3. Overview.......................................................................................................323
36.4. Data and Pinout description..........................................................................323
36.5. Cable.............................................................................................................323
36.6. Parameter Descriptions and format..............................................................324
36.7. List of parameters.........................................................................................324
36.8. Table of current alarm condition codes.........................................................327
36.9. RS232 Connection Settings and Testing Data Output..................................329
36.10. Glossary......................................................................................................329
Appendix 5. VueLink .....................................................................................................332
37. VueLink Technical Data ..........................................................................................332
37.1. Glossary........................................................................................................332
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37.2. Connecting the SLE5000 to the VueLink patient monitor ............................. 332
37.3. Parameter Descriptions................................................................................333
37.4. Data transferred to the VueLink system from the SLE5000.........................334
37.5. Alarm and inoperative indications.................................................................336
37.6. VueLink Task Window Layout......................................................................339
37.7. Notes on General System Behaviour...........................................................340
37.8. Activation of VueLink....................................................................................341
37.9. Disabling VueLink.........................................................................................342
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Warnings and Cautions
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1. Warnings and Cautions
1.1 Warnings
1. The electronic and pneumatic units of the SLE5000 infant ventilator are sealed at the
factory with two “Warranty Void If Label Broken” seals. If the ventilator is subject to a
warranty agreement do not attempt to carry out any procedure that would involve
breaking these seals. If you make a warranty claim and these seals are broken SLE
may deem the warranty claim null and void. If the ventilator develops a fault within the
warranty period please refer to your warranty documentation.
2. Oxygen - Fire Hazard. Oxygen vigorously supports combustion and its use requires
special precaution to avoid fire hazards. Keep all sources of ignition away when oxygen
is in use. Do not use oil or grease on oxygen fittings or where oxygen is used.
3. Check the condition of the gas supply hoses to the ventilator. Do not use any hose that
shows signs of cracking, abrasion, kinking, splits, excessive wear or ageing. Make sure
that the Air or O2 hose has not come into contact with oil or grease.
4. The SLE5000 ventilator contains temperature dependant devices which perform
normally in controlled environments in hospitals. However if the ventilator has been
stored at a temperature different to that in which it will be used, allow the unit to
acclimatize before powering up.
5. Failure to comply with the recommended service programs could lead to injury of the
patient, operator or damage to the ventilator. It is the owners responsibility to ensure
that the equipment is regularly maintained.
6. The SLE5000 contains static sensitive electrical devices. Anti static precautions must be
observed at all time when working on the ventilator.
7. When working on the ventilator disconnect the mains supply. Use an earthing strap to
earth the ventilator.
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1.2 Cautions
1. When working on the pneumatic unit, protect the front facia panel by resting it on a soft
pad.
2. Do not use a sharp instrument, such as a pen to activate the controls as the excessive
pressure applied by the point will damage the touch screen membrane.
3. The Ventilator must be connected to a suitably rated and grounded electrical power
source.
4. If the SLE5000 is adversely affected by equipment emitting electromagnetic interference
then that equipment should be switched off or removed from the vicinity of the SLE5000.
Conversely, if the SLE5000 is the source of interference to other neighbouring
equipment, it should be switched off or taken to another location.
5. The functioning of this machine may be adversely affected by the operation of
equipment such as high frequency surgical (diathermy) equipment, defibrillators, mobile
phones or short-wave therapy equipment in the vicinity.
8. The equipment is not suitable for use with, or in the presence of flammable anaesthetic
mixtures.
6. The SLE5000 flow monitoring system is calibrated to work in an air / oxygen mixture, the
use of other gas mixtures may affect the flow monitoring accuracy of the ventilator.
7. Disposal of the Oxygen Sensor should be in accordance with local regulations for
hazardous substances. Do not incinerate. SLE offer a cell disposal service.
8. The ventilator must have its batteries charged every 14 days. The ventilator must be
connected to a mains power source for 24 hours to ensure a full charge. Failure to
charge the batteries will shorten the service life of the batteries which will result in
reduced battery life in a mains power fail situation.
9. If the ventilator is operating on battery power and allowed to completely discharge the
battery, it should be recharged a soon as possible. This is to avoid damaging the
batteries by allowing them to remain in a deep discharged state for any period of time.
Allowing the batteries to remain in the deep discharged state will shorten the life of the
batteries and the amount of time the ventilator can remain on battery power.
10. If the ventilator is not going to be used for a period in excess of 40 days then disconnect
the batteries from the power supply. (See “Extended storage” on page 71.)
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11. The SLE5000 contains several batteries, three 2 cell sealed lead acid batteries and 2
AA alkaline batteries. At the end of their useful life these batteries should be disposed of
in accordance with local authority guidelines.
12. Apart from the batteries, the ventilator and accessories do not contain any hazardous
components therefore no special precautions are required for their disposal. The
ventilator should be disposed of in accordance to the local WEEE (Waste Electrical and
Electronic Equipment) guidelines.
13. Care should be taken when attaching other equipment as this may affect mechanical
stability.
14. Any computer connected to the ventilator must be specified for medical use .
15. There is no special protection provided against ingress of water or liquids.
16. Do not use solvent based cleaning solutions to clean the touch screen or covers.
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Principles of Operation
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2. Principles of Operation
The SLE5000 infant ventilator consists of an electronic system in the upper section of the
ventilator and a pneumatic system in the lower.
2.1 Electronic System
The electronic system comprises three autonomous subsystems, one responsible for
monitoring the patient, one responsible for controlling the valves of the pneumatic system
and one for the user interface (touchscreen and displayed data). They are connected
together by three serial communication links in a delta configuration.
The ventilator has an internal battery that can power the ventilator in the event of a mains
power fail. If the mains power fails with the battery fully charged, then operation will continue
for 30 to 60 minutes depending on ventilation mode.
See “Electrical Block Diagram” on page 220.
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2.2 Pneumatic System
The pneumatic system comprises of the tubing and electro-mechanical valves necessary to
provide the gas in conventional and oscillatory ventilation modes. The two gas controlling
functions are blending and pressure generation
2.2.1 Blending
The method used for blending air and oxygen in known proportions is to pressure regulate
the two supplies (air and oxygen) so they produce equal flow rates and then allow each
supply into a mixing chamber for a time period equivalent to the proportions required. For
example, delivering oxygen at a set flow rate into a mixing chamber for 1 second and air at
the same flow rate for 2 seconds will result in a mixture of 1 part oxygen to 2 parts air
(resulting in a mix of 47.3%).
2.2.2 Pressure Generation
There are three nozzles within the exhalation block in the pneumatic subsystem. One for
generating negative pressure in the patient circuit and the other two for generating positive
pressure. The pressures generated from the three nozzles are controlled by three
electronically controlled pressure regulators. The negative and one of the positive nozzle
pressures can also be switched on and off rapidly with in-line (high speed) solenoid valves.
The other positive nozzle (the mean jet) is used to generate steady pressures in ventilation
(CPAP or PEEP pressures in conventional modes and mean pressures in HFO modes).
These three nozzles (or jets) are used in various combinations to generate all ventilation
modes.
2.2.3 Conventional ventilation
In non HFO modes the negative (or reverse) jet is used in a steady mode to provide a small
amount of flow to offset the inadvertent patient circuit pressure generated from the fresh gas
flow of 8 lpm. The mean jet is also used in a steady mode to generate the base pressure
level (CPAP or PEEP) and the forward jet is used to generate the PIP pressure during the
inspiratory phase. The rise time of the inspiratory phase is controlled by dynamically
controlling the forward jet pressure regulator rather than switching a steady pressure with
the high speed valves.
This provides a smooth rise in pressure and allows user adjustable rise times rather than
abrupt changes and pressure “ringing” which can result from high speed switching. The fall
of the inspiratory wave is also controlled by the forward jet pressure regulator to bring the
pressure down quickly and smoothly, using the high speed valves to do this would again
result in inadvertent ‘ringing’ which causes difficulties for the monitor subsystem in trying to
detect a patient breath attempt by monitoring the pressure alone. Once the pressure has
been brought close to the base pressure, after about 100 ms, the forward jet solenoid is
switched off to prevent any further artefact causing false triggering.
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Note that all jet pressures actually sum in the exhalation block, for example, to ventilate a
patient with a PEEP pressure of 5 mbar and a PIP pressure of 30 mbar, the mean jet will be
set to generate a continuous circuit pressure of 5 mbar and the forward jet will be set to
generate a circuit pressure varying between zero (exp phase) and 25 mbar (insp. phase).
Since the jet pressures will sum, this will result in the desired patient pressure.
2.2.4 HFO ventilation
In pure HFO mode the mean jet pressure regulator is used purely to set the mean pressure.
The forward and reverse jet pressure regulators are used to generate steady positive and
negative delta P components that will be superimposed on the mean pressure. These
components are switched quickly using the high-speed solenoid valves to generate the HFO
pressures.
For example to ventilate a patient with a mean pressure of 10 mbar and a delta P pressure
of 60 mbar, the mean jet will be set to generate a continuous pressure of 10 mbar, the
forward jet will be set to generate a continuous pressure of 30 mbar and the reverse jet will
be generating a continuous pressure of –30 mbar. The HFO rate is determined by the rate of
switching between the forward and reverse pressures on the high-speed valves. Again,
because the jet pressures sum, the resulting patient pressures will be switching between –
20 mbar and +40 mbar.
Mean HFO pressures up to 35mbar are required but the mean jet can only generate
pressures up to about 20 mbars. To obtain higher mean pressures than 20mbars in HFO it is
necessary to apply a higher pressure on the forward pressure regulator and a lower
pressure on the reverse pressure regulator. Using this method, the desired mean must be
less than half the desired delta p pressure plus 20 mbars.
See “Pneumatic Unit Schematic” on page 222.
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Description of Symbols
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3. Description of Symbols
Symbol Description
Type BF connection (Situated on front panel)
Read manual (Situated on rear panel)
Date of Manufacture (Appears on serial number label)
Do not dispose of as general waste (WEEE directive)
(Appears on serial number label)
EEC conformity marking showing compliance with the Medical
Devices Directive (Appears on serial number label)
Indicates the mains power switch
Mains power present, (Situated on front panel)
Indicates a warning in the manual
Observe anti static precautions
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Symbol Description
Indicates a note in the manual
Indicates a caution in the manual
Check list item.
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Equipment List
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4. Equipment list
To service the SLE5000 infant ventilator the service personnel will require the following
equipment. Items marked with an SLE part number can be obtained by contacting the
service department.
• Electronic engineers tool kit.
a/b
•
•a Patient circuit....................................................SLE Part Nº: BC5188/100 or /400
•a Humidification chamber (Typically MR225)......SLE Part Nº: N3220
•
•
•
•
Calibration analyser (calibrated in mbar) .......SLE Part Nº: N2830
b
Test lung...........................................................SLE Part Nº: N6647
c
Foam support pad
a
Digital Multimeter (1mv resolution)
a
Calibration kit....................................................SLE Part Nº: N9025
Which contains the following:
Block and leak Y piece assembly Qty 1
Flow tubing assembly ................ Qty 1
Internal pressure tubing kit ........ Qty 1
Y piece Kit .................................. Qty 1
Dummy load kit .......................... Qty 1
Tygon tubing 3/8" x 9/16" ...........Qty 600mm
•cStatic protection wrist band
•cAnti-static protective bags (300mm x 300mm)
•a Flow sensor cable.............................................SLE Part Nº: N6635
•a Flow sensor......................................................SLE Part Nº: N5201
a
Exhalation block ...............................................SLE Part Nº: N6622
•
•a Oxygen supply
•a Air supply
a
•
Earthing strap
a
Note all items marked with an ‘a’ are required for servicing and overhaul. Without these
items the user will be unable to service or overhaul the SLE5000 ventilator.
b
Note items marked with a ‘b’ are required to carry out the functional testing routine.
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Engineering Mode Software
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5. ENGMODE
The SLE5000 ventilator is calibrated via two calibration programs, one for the
ventilator and one for the Touch screen. The calibration programs are accessed
via the Controller Services panel in the user interface.
5.1 Accessing the Calibration Programs
Step 1 Press the Options and Service Data
Button.
Step 2 Press the Next button.
Step 3 Press the Version button.
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Step 4 Press the Controller button.
Step 5 Enter the code supplied by SLE into the
ventilator, via the controller services panel
to activate the calibration program.
Begin psv is the A button.
End psv is the B button.
Apnea sup is the C button.
Enter your code here____________________
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5.2 Ventilator Calibration Program
The calibration program has four main functions.
1. Sensor Calibration
2. Jet Calibration
3. O2 & Flow System Calibration
4. Elapsed Time Reset.
5. Language Selection
6. Exit
5.2.1 Sensor Calibration
The sensor calibration panel allows the following sensors to be calibrated.
Controller
The setting of the
block and leak sensor
offset and gain.
The setting of the
blender sensor offset
and gain.
Monitor
The setting of the
blender sensor gain.
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5.2.2 Jet Calibration
The jet calibration panel allows the forward jet, reverse jet and mean jet to be
adjusted. Also contained within this panel are the controls to adjust the inspiratory
and expiratory leading edges of the CMV wave form. Associated controls to set
the ventilator in CMV or HFO mode are also displayed.
Note: HFO mean compensation is automatically set to OFF in ENGMODE.
5.3 O2 & Flow System Calibration
The O2 & Flow System calibration panel allows the calibration of the oxygen
monitoring system (2 point calibration, 100% and 21%) and the calibration of the
flow system.
The flow system is a
factory set system
and requires an ETU2 for calibration.
Note: O2 calibration
time is 7 minutes.
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5.4 Reset Elapsed Time
The reset elapsed time panel allows the ventilators time counter to be reset to
zero days and minutes.
This function is only
used at the 20,000
hour overhaul.
5.5 Language Selection
The “Language Selection Program” panel displays the languages choices that
can be installed.
Note: For version 4.3.1 software the “Language Selection Program”
can be accessed from the user interface see section 5.6 on page 29.
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The Select Language area
of the screen will display a
number of buttons. The
number of buttons will vary
according to the release of
foreign languages.*.
* Please contact SLE or your distributor for information on the availability of
secondary languages.
To install a secondary language select the language required.
The name of the selected
language will be displayed
in the selected language
area.
Press the “Install Language” button. When the name of the installed language is
displayed in the Installed Language area the installation is complete.
Press “Exit” and restart the ventilator.
5.6 Activation of Language Selection Program form User Interface
Enter the following code AABBCC into the ventilator
via the controller services panel to activate the
Language Selection Program.
Begin psv is the A button.
End psv is the B button.
Apnea sup is the C button.
5.7 Exit
The exit button will return the user to a DOS prompt. To return to the ventilator to
its normal operating mode, restart the ventilator.
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5.8 Touch Screen Calibration Program
The touch screen calibration program is accessed by the same method as for the
calibration program. See ’5.1 Accessing the Calibration Programs’ on page 24.
Enter you code here____________________
For the touch screen please follow the on screen instructions.
To return to the ventilator to its normal operating mode, restart the ventilator.
Warning: Failure to carry out the touch screen calibration correctly can
cause the ventilator to become unusable. A failed touch screen calibration
can only be corrected by connection of a specialist device. Please contact
SLE or your distributor in this situation.
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Component Replacement
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6. Component Replacement Procedure
The component replacement procedures detailed in this chapter describes how to replace
the individual component in isolation. Each procedure details what setup is required to return
the ventilator to service. After completing any or all of the following procedures a full
functional test as described in this manual must be carried out.
The following replacement and setup procedures are detailed in this chapter.
Electronic unit
• Compact flash card...................................SLE Part Nº: N6631/21/CF/50
• PC board ..................................................SLE Part Nº: N6631/LX800
• CAN card ..................................................SLE Part Nº: N6634
• Computer /display control assembly.........SLE Part Nº: L0275/OEM2
• Serial controller (Touch screen)................SLE Part Nº: N6631/2216
• Control and monitor board........................ SLE Part Nº: A0763/02/M
• Power supply unit......................................SLE Part Nº: M0915
• Batteries....................................................SLE Part Nº: M0901
• Transducer PCB assembly....................... SLE Part Nº: A0761
• LCD...........................................................SLE Part Nº: N6631/02
• Touch screen.............................................SLE Part Nº: N6631/05
• Inverter PCB .............................................SLE Part Nº: N6631/13
•
Pneumatic Unit
• Conical and Duckbill filters........................SLE Part Nº: N2185/06 & N2185/05
• Blender manifold block..............................SLE Part Nº: N0280/01
• Pressure regulators PR3, PR4 & PR6......SLE Part Nº: N0280/02/S46
• High speed jet valves SV9, 10, 11 & 12....SLE Part Nº: N0280/03
• Regulator input air PR1.............................SLE Part Nº: N0280/05
• Regulator input oxygen PR2.....................SLE Part Nº: N0280/06
•
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7. Preparing the SLE5000
A
A
A
A
A
Caution: the SLE5000 ventilator weighs 21.8kg fully assembled. Care should
be taken when handling the ventilator.
If preparing to work on both the electronic and pneumatic units of the SLE5000 remove the
ventilator from the stand and place it on a flat stable surface. The SLE5000 ventilator is
attached to the trolley or pole by two screws with shake proof washers. Retain the screws
and washers for re-attachment of the ventilator.
If work is to be carried out on the electronic unit only, it is advisable to leave the ventilator
attached to the trolley.
Step 1 Remove the five fixing screws (A) from
the rear cover.
Step 2 Slide the rear cover towards the rear of
the machine. When the lip has been disengaged
lift the cover off.
(Model J) Page 33
Page 34
Warning: If the ventilator is under a
C
C
D
D
B
D
warranty agreement removal of the
inner covers may void the
agreement. Please refer to the
warranty documentation.
Step 3 Remove the screws (B) (2
screws) (C) (4 screws) to release the
electronic inner cover.
Step 4 Remove the screws (D) (6
screws) to release the pneumatic unit
base plate.
Step 5 Rest the ventilator on a soft
pad.
Warning: Disconnect the ventilator
from the mains supply. Use an
earthing strap to earth the ventilator.
Page 34 (Model J)
Page 35
8. Component Replacement (Electronic unit)
B
B
B
B
B
C
C
C
D
G
G
E
F
A
H
I
I
I
8.1 N6631/21/CF/50 Compact Flash Card
1. Slide the compact flash card (B) out of its socket
in the direction of the arrow.
2. Insertion of the compact flash card is the reverse
of removal.
Caution: Do not force the compact flash card out of the carrier , as it may catch
on the connector mounted on the edge of the board
Setup: If the same or new card is inserted software then a full functional test is required for
this component. If the card is part of full software upgrade i.e. with control and monitor
firmware, then a full system calibration is required.
8.2 N6631/LX800 PC Board
1. Disconnect the display cable (A).
2. Remove the screws (B) and washers (C)
that retain the PC board to the support pillars.
3. Disconnect the inverter enable cable (D)
and the PC board power connector (E).
4. Gently disconnect the PC board (F) from
the CAN card by lifting the board vertically,
until all the connector pins are disengaged
from the socket.
5. Disconnect the interface cables (G) from the
PC board.
6. Disconnect the serial controller cable (H)
from the PC board.
7. The PCB spacers (I) are now loose.
8. Assembly is the reverse of removal.
Setup: Confirm that the ventilators time and date settings are correct. (Refer to the user
manual for more details on how to set the time and date).
(Model J) Page 35
Page 36
8.3 N6634/OEM2 CAN Card
A
B
B
A
B
C
D
C
Warning: The CAN card is a static sensitive device.
1.The CAN card (A) is already loose from the
removal of the N6331/LX800 PC board.
2. Disconnect the CAN card ribbon cables (B).
3. The CAN card (A) can now be removed.
4. Assembly is the reverse of removal.
Setup: No setup is required for this device.
8.4 N6631/2216 Serial controller (Touch screen)
Warning: The Serial controller is a static sensitive device.
1. Disconnect the touch screen ribbon cable
(A) from the board.
2. Disconnect the carrier board link cable (B)
from the board.
3. Remove the two nuts and washers (C)
retaining the serial controller PCB.
4. Remove the serial controller PCB (D).
5. Assembly of the serial controller PCB is the
reverse of removal.
Setup: Touch screen calibration.
Page 36 (Model J)
Page 37
8.5 L0275/OEM2 Computer/Display Control assembly
A
B
E
C
F
G
D
Red/Black wire
Pin 1
L0275/OEM2
Warning: The Computer/Display Control assembly is a static sensitive device.
1. Remove the PCB locking screw. This will allow the top board assembly
to slide forward a small amount which gives better access to the edge
connectors of the top board.
2. Disconnect the display cable connector (A).
3. Disconnect the touch screen connector cable connector (B).
4. Disconnect the carrier board power cable connector (C).
5. Disconnect the inverter board power cable connector (D).
6. Disconnect the CAN card interface cables (E & F).
7. Disconnect the RS232 connector cable (G)
8. The carrier board can now be removed by sliding towards the rear of the ventilator.
Note: The orientation of the
display cable .
(Model J) Page 37
Page 38
8.6 A0763/02/M Control/Monitor Board
E
F
H
I
J
K
B
C
A
D
G
L
Warning: The Control/Monitor Board is a static sensitive device.
1. Remove the L0275/OEM2
Computer/Display Control
assembly as described in section
8.5.
2. Disconnect the following cables.
3. CAN card link ribbon cable
controller side (A). (P3)
4.CAN card link ribbon cable
controller side (B). (JP3)
5. Power supply connector
controller side, main loom (C). (P4)
6. Controller to A0761 transducer
assembly ribbon cable (D). (P5)
7. Conventional valve drive ribbon
cable (E). (P6)
8. Analogue valve drive ribbon
cable (F). (P7)
9. Alarm sounder cable, main loom (G). (JP5)
10. Battery/power supply sensing connector, main loom (H). (JP9)
11. Controller to A0761 transducer assembly connector (I). (JP7)
12. O
13. Power supply connector monitor side, main loom (K). (JP6)
14. Flow sensor connector (L). (JP4)
15. The control and monitor board can now be removed.
16. Assembly is the reversal of removal.
Setup: A full system calibration is required for this component.
cell connector (J). (JP8)
2
Note: For a detailed description. Refer to “A0763/02/M Monitor and control
board” on page 56.
Page 38 (Model J)
Page 39
8.7 M0915 Power Supply Unit
B
A
C
D
E
1. Disconnect the main power supply.
2. Remove the four fixing screws.
3. Disconnect the battery monitor cable (A).
4. Disconnect the main loom power cable
(B).
5. Disconnect the battery monitor cable (C).
6. Disconnect the Mains Present
LED cable (D).
7. Lift the power supply to reveal the mains
inlet cable (E).
8. Disconnect the mains inlet cable and
remove the power supply.
9. Assembly is reversal of removal.
Setup: No setup is required for this device.
(Model J) Page 39
Page 40
8.8 M0901 Batteries
A
A
B
1. Remove the L0275/OEM2
Computer/Display Control
assembly as described in section
8.5.
2. Remove the Control /Monitor
board as described in section
8.6.
3. Disconnect all the battery
terminal leads.
4. Remove the four retaining
screws for the first two battery
blocks.
5. Remove the two batteries.
6. Remove the two fixing screws and washers (A), securing
the fixing bracket (B) for the third battery.
7. Slide the battery forward and lift clear.
8. Remove the two fixing screws to release the
bracket from the battery block.
9. Assembly is reversal of removal.
Note: When refitting the batteries the
screws require a torque setting of 1.2Nm
Setup: No setup is required for this device. The ventilator should be left connected and
turned on for a minimum of 24 hours to fully charge the batteries.
Page 40 (Model J)
Page 41
8.9 A0761 Transducer PCB Assembly
C
B
D
E
A
F
H
G
Warning: The Transducer PCB is a static sensitive device.
Note: Screen removed for clarity.
1. Remove the L0275/OEM2 Computer/
Display Control assembly as described in
section 8.5.
2. Remove the Control/Monitor board as
described in section 8.6.
3. Disconnect the ribbon cable from J2
(A).
4. Disconnect the main loom connector
from J5 (B).
5. Disconnect the LED connector from J4
(C).
6. Disconnect the loom connector from J3
(D).
7. Disconnect the loom connector from J1
(E).
Note: The tubes connected to the transducer PCB are attached using an
adhesive.
8. Remove the tube (F) from the Y piece connector.
9. Remove the tube (G) from the bulk head connector (H).
10. Remove the six fixing screws retaining the transducer PCB.
11. Assembly is reversal of removal.
Setup: A full system calibration is required for this component.
(Model J) Page 41
Page 42
8.10 N6631/13 Inverter PCB
A
B
A
B
C
D
D
E
E
Warning: The Transducer PCB is a static sensitive device.
Note: Screen removed for clarity.
1. Remove the L0275/OEM2 Computer/Display Control
assembly as described in section 8.5.
2. Remove the Control/Monitor board as described in
section 8.6.
3. Remove the two screws (A).
Warning: The PCB is still attached by the backlight
connectors to the LCD / Touch screen assembly.
4. Disconnect the two backlight connectors (B).
5. Disconnect the Inverter/L0275/OEM2 connector cable
(C).
6. Remove the PCB from the electronic unit.
7. Remove the two support pillars (D) by removing
the nut and washers (E).
8. Assembly is reversal of removal.
Setup: No setup is required for this device.
Page 42 (Model J)
Page 43
8.11 N6631/02 LCD & N6631/05 Touch Screen
A
A
A
A
B
C
E
D
F
F
F
F
G
H
H
I
1. Remove the L0275/OEM2
Computer/Display Control
assembly as described in section
8.5.
2. Remove the Control / Monitor
board as described in section 8.6.
3. Remove the 4 screws (A)
retaining the screen tie bars.
4. Remove the 3 remaining facia
retaining screws (B).
5. Gently draw the front panel
assembly away from the unit.
6. Disconnect the two backlight
power leads from the inverter
board (See section 8.10 on page
42).
Note: Display / touch screen cables not shown for clarity.
7. Disconnect the two tubes (C).
8. Disconnect the fan electrical connector (D).
9. Disconnect the led electrical connector (E).
10. Remove the 6 facia retaining
screws and washers (F).
11. Remove the front facia.
12. Withdraw the touch screen
cable (G) through the hole in the
LCD cable clamp plate (I).
13. Remove the two screws and
washers (H) retaining the LCD
cable clamp plate (I).
14. Slide out the LCD retaining
clamp (I).
15. Remove the 2 screws (J)
retaining the right hand side of the
LCD / touch screen assembly.
(Model J) Page 43
Page 44
16. Remove the 2 nuts, washers (K) and screws (L) retaining the left hand side of the LCD /
M
J
K
K
L
L
N
N
N
N
N
O
O
touch screen assembly.
17. Separate the LCD / touch screen assembly from the mounting plate.
18. Disconnect the connecting cable (M) from the rear of the LCD assembly.
19. The LCD / touch screen assembly is now free.
20. To remove the touch screen, peel off the
adhesive tape (N).
21. Once the tape is removed the touch screen panel
scan be removed.
Warning: Do not touch the LCD screen with bare
hands. This is to prevent grease contamination
of the surface (i.e. finger prints).
22. With the touch screen removed the two LCD mounting blocks (O) can be removed as
access to their fixing screws is now possible.
23. Assembly is reversal of removal.
Setup: If the entire assembly or just the touch screen has been replaced the screen
calibration routine will have to be carried out.
Page 44 (Model J)
Page 45
9. Component Replacement (Pneumatic unit)
A
E
C
B
D
G
F
9.1 Duckbill and conical filters.
Note: The air inlet connector is used to illustrate the process, the procedure is
the same for the O2 inlet connector.
Note: The O2 connector is a left hand thread and the Air connector is a right
hand thread.
1. Remove the inlet connector (A).
2. Remove O-ring (B), Nylon filter cone (C), Washer (D) and Duckbill check valve (E).
3. Remove the connector nut (F) and O-ring (G).
4. Assembly is reversal of removal.
Note: The O-ring’s (B & G) should always be replaced with a new items.
Setup: No setup is required for this device.
(Model J) Page 45
Page 46
9.1.1 N0280/01 blender manifold block
B
F
C
D
I
A
E
H
G
Location in pneumatic unit
Part number: N0280/01
1. Disconnect and remove the following tubes:
(A) fresh gas supply tube,
(B) fresh gas dump tube,
(C) O2 cell sample dump tube,
(D) fresh gas to PRV1 tube,
(E) blender O2 supply tube,
(F) air inlet tube,
(G) forward jet supply tube,
(H) proximal airway bleed tube
(I) reverse jet supply tube.
Page 46 (Model J)
Page 47
2. Remove the nuts and washers (I) to release the blender manifold assembly (J).
I
I
I
I
J
Red dot
3. Lift the manifold assembly (J) off the four chassis studs.
Note: Leave the old oxygen cell fitted to the assembly. This is to stop any
debris entering the oxygen cell manifold.
4. Assembly is reversal of removal.
Note: Ensure that the replacement blender manifold is marked KMC3324, via
the red dot.
Setup: Pneumatic setup and full system calibration is required for this component.
(Model J) Page 47
Page 48
9.1.2 N0280/02/S46 Pressure regulators (PR3, PR4 & PR6)
B
C
A
E
F
D
Location in pneumatic unit
Part number: N0280/02
1. Disconnect the following tubes:
(A) forward jet supply tube
(B) reverse jet supply tube
(C) mean jet delivery tube
2. Disconnect the electrical connectors
from PR3 (D), PR4 (E) and PR6 (F).
PR3 cable is tagged 3.
PR4 cable is tagged 4.
PR6 cable is tagged 6.
Page 48 (Model J)
Page 49
3.Remove the four nuts and washers (G)
G
G
G
G
K
J
M
I
H
L
L
securing the pressure regulator manifold
assembly.
4. To remove the pressure
regulators (H, I & J) from
the manifold block (K)
remove the screws (L),
two per regulator.
5. Assembly is reversal of removal.
Setup: Full system calibration is required for this component.
(Model J) Page 49
Note: that the ‘O’ rings (M) will be released once the regulator has been
removed.
Page 50
9.1.3 N0280/03 High Speed Jet Valve Assembly
B
C
A
D
D
D
D
Location in pneumatic unit
Part number: N0280/03
1. Disconnect the electrical connectors
from PR3 (A), PR4 (B) and PR6 (C).
PR3 cable is tagged 3.
PR4 cable is tagged 4.
PR6 cable is tagged 6.
2. Loosen but do not remove the four nuts
(D) securing the pressure regulator
manifold assembly. Once loose slide the
assembly in the direction of the arrow.
Page 50 (Model J)
Page 51
3. The high speed valve assembly and
E
F
loom (E) can now be removed by
disengaging the valves from the rear of
the forward and reverse jet manifold
(F).
4. Assembly is reversal of removal.
Setup: Pneumatic setup and full system calibration is required for this component.
(Model J) Page 51
Page 52
9.1.4 N0280/05 inlet air pressure regulator
B
C
A
C
B
1.Remove the remaining tube (A) from the
inlet air pressure regulator (B).
2. Remove the two nuts (C).
3. Withdraw the regulator (B).
4. Assembly is reversal of removal.
Setup: Full system calibration is required
for this component.
Page 52 (Model J)
Page 53
9.1.5 N0280/06 inlet oxygen pressure regulator
B
C
A
D
E
G
F
I
E
E
H
A
C
J
C
K
A
1. Disconnect the tube (A) from the inlet
manifold elbow (B).
2. Disconnect the tube (C) from the inlet
manifold elbow (D).
3. Remove the two fixing nuts (E).
4. Draw the regulator (F) from the exhaust
block (G) disengaging the tube (H) from
the fitting (I).
Note: the tubes (A & C) will be
discarded with the regulator.
5. Assembly is reversal of removal for the
original component.
5. For a new regulator connect new bleed
tubes (A & C) to the replacement oxygen
regulator bleed ports (J & K).
Tube length A = 210mm
Tube length C = 190mm
Note: Panel mount regulator shown.
Setup: Full system calibration is required
for this component.
(Model J) Page 53
Page 54
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Page 54 (Model J)
Page 55
A0763/02/M Board
(Model J) Page 55
Page 56
10. A0763/02/M Monitor and control board
A
B
d
c
1
5
6
4
3
2
e
The SLE5000 uses the base A0760 Rev F PCB to make up the A0763/02/M
board.
10.1 A0763/02/M board programmable devices
The A0763/02/M board is divided into two sections a) the monitor side and b) the
control side.The monitor section is divided into a further two sections c) monitor
isolated and d) monitor non islolated.
On the A0763/02/M board there are six programmable devices. These devices
are:
1) U23 monitor software non isolated IC
2) U25 monitor non isolated PAL
3) U9 monitor software isolated IC
4) U14 monitor isolated PAL
Page 56 (Model J)
5) U33 controller software IC
6) U34 controller PAL
Page 57
10.2 A0763/02/M Board Hardware Identifier
The A0763/02/M board has a group of resistors that allow the software to
recognize the pneumatic unit configuration. There are 10 hardware idents
possible on the board.
The table below outlines the resistor groups to produce specific hardware ID’s.
The SLE5000 Model G ventilator uses Hardware Ident 3.
(Model J) Page 57
Page 58
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Page 58 (Model J)
Page 59
Electrical Safety Testing
(Model J) Page 59
Page 60
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Page 60 (Model J)
Page 61
11. Electrical Safety Testing of the SLE5000
This test is performed using an approved electrical safety testing device.
The electrical safety test must be carried out on the unit with all the electrical connections
intact.
Connect the ventilator to the electrical safety tester and turn the unit ON.
Connect the flow sensor connector via a test loom to the electrical safety tester.
Perform the tests.
Equipment under test is: SLE5000 Infant Ventilator Class 1B (flow sensor is a Floating type
applied part).
Test Expected Results
Class B Tests
Expected Value Tolerance
Insulation Resistance
Earth Continuity
Earth Leakage
Earth Leakage (supply o/c)
Enclosure Leakage (normal)
Enclosure Leakage (earth o/c)
Enclosure Leakage (supply o/c)
Patient Leakage on Applied Part
Patient Leakage on Applied Part (Earth o/c)
Patient Leakage on Applied Part (supply o/c)
Class BF Tests
Mains on Applied Part Normal
Mains on Applied Part Reversed
Check that in all the preceding tests: the resistance to earth on the internal metal screening
is less than 0.2Ω.
>200MΩ
<0.2Ω
0 μA +500 μA
0 μA +1000 μA
0 μA +100 μA
0 μA +500 μA
0 μA +500 μA
0 μA +100 μA
0 μA +500 μA
0 μA +500 μA
0 μA +5000 μA
0 μA +5000 μA
(Model J) Page 61
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Page 62 (Model J)
Page 63
PSU Testing
(Model J) Page 63
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Page 64 (Model J)
Page 65
12. PSU Testing
This check should only be carried out if the PSU is suspected to be faulty.
a) Unplug the battery connector from the PSU.
b) Remove the the top board assembly.
c) Turn on the ventilator and check the output voltages of the power supply at the
following points on the wireloom.
On P4 (connection to the controller
side of the controller monitor board)
check the following pins.;
Voltage
Lower Limit
Voltage
Upper Limit
PL4/1 22.8V 25.2V
PL4/2 11.4V 12.6V
PL4/3 4.875V 5.325V
PL4/4 4.875V 5.325V
PL4/5 GND (digital) GND (digital)
PL4/6 GND (high power,
solenoid return)
GND (high power,
solenoid return)
Battery connector voltage 13.8V 14.2V
Location of P4
d) Turn off the ventilator and reconnect the battery connector.
e) Refit the PC board
f) Turn on the ventilator and check that the cooling fan is rotating and the power
LED on the front panel is illuminated.
g) On the battery connection, check that the voltage indicates battery charging.
Look for the voltage increasing gradually as the battery charges. 13.8V = o/c
condition or battery fully charged.
(Model J) Page 65
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Page 66 (Model J)
Page 67
Power Up-Down & Battery Care
(Model J) Page 67
Page 68
13. Ventilator Power up and Power down.
2 seconds
13.0.1 Mains power indicator.
The ventilator has a LED indicator on the front facia to indicate when mains
power is present. The indicator unlike previous models does not indicate that the
machine is ON. The mains power present indicator allows the user to see that the
ventilator is charging the batteries.
13.0.2 Powering up and down.
The ventilator has an internal battery that will allow the ventilator to continue
operating in a mains power failure situation. The ventilator can also be started on
battery power when not connected to the mains or in a mains power fail situation.
The user has to be aware that the “Mains Power Fail Alarm” will sound until mains
power has been restored.
13.0.3 Turning ON the ventilator
Depress and hold down the mains power switch for 2 seconds. When the
ventilator has started release the button.
13.0.4 Turning OFF the ventilator
Depress and hold down the mains power switch for 2 seconds. The ventilator will
power down but the “Complete Power Fail Alarm” will be active.
To cancel the alarm depress the mains switch again but do not hold down.
Page 68 (Model J)
Page 69
14. Back-up Battery Charging
A
B
Prior to first use, the ventilator should be connected to a suitable power outlet that
is ON for a minimum of 24 hours. The ventilator does not need to be turned on to
charge the battery.
The ventilator will indicate that mains power is present via the indicator LED on
the front of the machine.
It is recommended that the ventilator has its batteries charged every 14 days. The
ventilator must be connected to a mains power source for 24 hours to ensure a
full charge.
If the ventilator has not been used or charged in a 40 day period, it must be
charged for 24 hours. Failure to do this will leave the batteries in a deep
discharged state.
Warning: Allowing the batteries to remain in the deep discharged state will
shorten the service life of the batteries and the amount of time the ventilator
can remain on battery power.
Warning: If the ventilator is operating on battery power and allowed to
completely discharge the battery, it should be recharged a soon as
possible.
14.1 Battery indicator
Version 4.3 software displays two icons in the top left hand corner of the screen.
The first is the battery status icon (A) and the second is the mains power
connected icon (B). The battery status icon operates in two different ways,
dependant on model of ventilator. The mains power connected icon functions the
same way on all models of ventilator.
When mains power is connected, the ventilator displays the mains power
connected icon.
When mains power is disconnected, the ventilator displays the mains
power disconnected icon.
(Model J) Page 69
Page 70
The battery status icon has seven states.
With mains power connected or disconnected
a) Charged to 75% or greater, the battery icon displays three green blocks.
With mains power disconnected
b) Discharged to between 50% and 75% of battery capacity.
c) Discharged to between 25% and 50% of battery capacity.
d) Discharged to between 0% and 25% of battery capacity
With mains power connected
e) Charging, where the blocks cycle from left to right.
Page 70 (Model J)
Page 71
15. Extended storage
A
A
A
A
A
D
E
If the ventilator is not going to be used for a period in excess of 40 days then the
following protocol has to be followed.
The batteries will require charging prior to disconnection for 24 hours. This is
required to protect the batteries against damage due to deep discharge.
1. Remove the five fixing screws (A)
from the rear cover.
2. Slide the rear cover to reveal the battery fuse holder.
3. Pull out the fuse drawer (D).
4. Remove the fuse from the rear
compartment and place it in the front
compartment (E).
5. Close the fuse drawer (D).
6. Tag the ventilator to record that the
batteries have been disconnected.
On re-commissioning the ventilator reverse the above process and re-charge the
batteries for a further 24 hours.
Note: If the ventilator has been in storage for more than 18 months then
carry out a 10,000 hour overhaul prior to returning the ventilator to service.
(Model J) Page 71
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Page 72 (Model J)
Page 73
Maintenance and Overhaul
(Model J) Page 73
Page 74
16. Maintenance and Overhaul
The ventilator has the following maintenance / overhaul schedule.
12 months Preventative maintenance Kit: N9010/12/G
24 months (10,000hrs) Overhaul Kit: N9010/24/G
36 months Preventative maintenance Kit: N9010/12/G
48 months (20,000hrs) Overhaul Kit: N9010/48/G
16.1 Preventative Maintenance Kit
The N9010/12/G contains the following:
Conical filter Qty 2 Part Nº: N2185/06
Duckbill valve Qty 2 Part Nº: N2185/05
Duckbill washer Qty 2 Part Nº: N0280/10/04
“O” rings Qty 2 Part Nº: N6618
Orifice block “O” rings Qty 2 Part Nº: N2042
Oxygen cell Qty 1 Part Nº: N2191/10
AA Battery 1.5v Qty 2 Part Nº: M0484/03
Page 74 (Model J)
Page 75
12 & 36 Month Maintenance
(Model J) Page 75
Page 76
16.2 12 & 36 month preventative maintenance procedure
A
A
A
A
A
16.2.1 Ventilator preparation
1. Preventative maintenance should be carried out with the ventilator still attached to the
trolley.
2. Disconnect the air and oxygen supply hoses.
3. Remove the five fixing screws (A)
indicated from the rear cover.
4. Slide the rear cover towards the rear of
the machine. When the lip has been
disengaged lift the cover off.
Page 76 (Model J)
Page 77
Warning: If the ventilator is under a
B
B
B
warranty agreement removal of the
inner covers may void the agreement.
Please refer to the warranty
documentation.
5. Remove the screws (B) to release the
electronic inner cover.
The ventilator is now ready for
maintenance.
Warning: Disconnect the ventilator
from the mains supply. Use an
earthing strap to earth the ventilator.
(Model J) Page 77
Page 78
16.2.2 Duckbill and conical filter replacement.
A
E
C
B
D
F
G
The procedure is the same for both air and oxygen inlets.
1.Remove the inlet connector (A).
Note: The O2 connector is a left hand thread and the Air connector is a right
hand thread.
2. Remove O-ring (N6618) (B),
Nylon filter cone (N2185/06) (C),
Washer (N0280/10/04) (D)
Duckbill check valve (N2185/05) (E).
3.Remove the connector (F).
Remove O-ring (N6618) (G),
4. Discard the O-ring’s, nylon filter cones, washers and duckbill check valves.
5. Re-assemble with the new components.
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16.2.3 Replacement of N2042 “O” Rings
A
B
1. Remove the silencer and exhalation
block from the ventilator.
2. Locate the two ’O’ rings located (A & B)
on gas ports.
3. Using a blunt probe lift out the old ’O’
ring and discard. Repeat the process for
the other ’O’ ring.
4. Wipe the gas ports with an approved
sterilizing solution.
5. Place new ’O’ rings into the grooves.
(Model J) Page 79
Page 80
16.2.4 Replacement of N2191/10 O2 Cell
A
B
B
1. Remove the O2 cell cover plate (A).
2. Pull out the cable until the connector (B) is
visible. Gently pull apart the connector.
3. Unscrew the cell anti-clockwise until free and
discard, treat the cell as a battery and dispose of
in the appropriate method.
4. Replacement of the cell is the reversal of
removal.
5. In addition to the tests carried out in the
previous preventative maintenace procedure,
carry out a 2 point oxygen calibration routine.
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Page 81
16.2.5 Replacement of CMOS backup batteries
1. Remove the two AA batteries and discard in accordance with local waste authority
guidelines.
2. Replace the batteries taking care to correctly insert the cells.
(Model J) Page 81
Page 82
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Page 82 (Model J)
Page 83
24 & 48 Month Overhaul
(Model J) Page 83
Page 84
16.3 24 month and 48 month overhaul procedures
The ventilator has two overhaul points, the first at 24 months or 10,000 hours (whichever is
sooner) and 48 months or 20,000 hours (whichever is sooner).
The 24 month / 10,000 hour overhaul consists of the replacement of the following
components.
These components are supplied in the form of an overhaul kit part Nº: N9010/24/G
Conical filter Qty 2 Part Nº: N2185/06
Duckbill valve Qty 2 Part Nº: N2185/05
Duckbill washer Qty 2 Part Nº: N0280/10/04
“O” rings Qty 4 Part Nº: N6618
Orifice block “O” rings Qty 2 Part Nº: N2042
Oxygen cell Qty 1 Part Nº: N2191/10
Backup battery Qty 3 Part Nº: M0901
AA battery Qty 2 Part Nº: M0484/03
The 48 month / 20,000 hour overhaul consists of the replacement of the following
components.
These components are supplied in the form of an overhaul kit part Nº: N9010/48/G
Conical filter Qty 2 Part Nº: N2185/06
Duckbill valve Qty 2 Part Nº: N2185/05
Duckbill washer Qty 2 Part Nº: N0280/10/04
“O” rings Qty 4 Part Nº: N6618
Orifice block “O” rings Qty 2 Part Nº: N2042
Oxygen cell Qty 1 Part Nº: N2191/10
Blender manifold assembly Qty 1 Part Nº: N9018
Backup battery Qty 3 Part Nº: M0901
AA battery Qty 2 Part Nº: M0484/03
High speed jet valves. (SV9,10,11 &12)Qty 4 Part Nº: Z9005/GRJ/001
Tubing Qty AR Part Nº: N0280/75
Options available for the 48 month overhaul:
Option 1. To carry out a service exchange of the pneumatic unit. (Part Nº: N9010/200)
Option 2. To purchase a new pneumatic unit. (Part Nº: N9010/250)
Option 3. To carry out the overhaul from the N9010/48/G kit of parts.
Page 84 (Model J)
Page 85
24 Month / 10,000 Hour Overhaul
(Model J) Page 85
Page 86
16.4 24 month / 10,000 hour overhaul procedure
A
A
A
A
A
The following instructions, list the order in which the 24 month overhaul should be carried
out.
1. Remove the five fixing screws (A)
indicated from the rear cover.
2. Slide the rear cover towards the rear of
the machine. When the lip has been
disengaged lift the cover off.
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Page 87
Warning: If the ventilator is under a
C
C
D
D
B
D
warranty agreement removal of the
inner covers may void the agreement.
Please refer to the warranty
documentation.
3. Remove the screws (B) (2 screws)
(C) (4 screws) to release the electronic
inner cover .
4. Remove the screws (D) (6 screws) to
release the pneumatic unit base plate.
5. Rest the ventilator on a soft pad.
Warning: Disconnect the ventilator
from the mains supply. Use an
earthing strap to earth the ventilator.
(Model J) Page 87
Page 88
16.4.1 L0275/OEM2 Computer/Display Control assembly
A
B
E
C
F
G
D
Red/Black wire
Pin 1
L0275/OEM2
Warning: The Computer/Display Control assemblies are static sensitive
devices.
1. Remove the PCB locking screw. This will allow the top board assembly
to slide forward a small amount which gives better access to the edge
connectors of the top board.
2. Disconnect the display cable connector (A).
3. Disconnect the touch screen connector cable connector (B).
4. Disconnect the carrier board power cable connector (C).
5. Disconnect the inverter board power cable connector (D).
6. Disconnect the CAN card interface cables (E & F).
7. Disconnect the RS232 connector cable (G).
8. The carrier board can now be removed by sliding towards the rear of the ventilator.
Note: The orientation of the
display cable .
Page 88 (Model J)
Page 89
16.4.2 A0763/02/M Control/Monitor Board
E
F
H
I
J
K
B
C
A
D
G
L
Warning: The Control/Monitor Board is a static sensitive device.
1. Disconnect the following cables.
3. CAN card link ribbon cable
controller side (A). (P3)
4.CAN card link ribbon cable
controller side (B). (JP3)
5. Power supply connector
controller side, main loom (C). (P4)
6. Controller to A0761 transducer
assembly ribbon cable (D). (P5)
7. Conventional valve drive ribbon
cable (E). (P6)
8. Analogue valve drive ribbon
cable (F). (P7)
9. Alarm sounder cable, main loom
(G). (JP5)
10. Battery/power supply sensing connector, main loom (H). (JP9)
11. Controller to A0761 transducer assembly connector (I). (JP7)
12. O2 cell connector (J). (JP8)
13. Power supply connector monitor side, main loom (K). (JP6)
14. Flow sensor connector (L). (JP4)
15. The control and monitor board can
now be removed.
(Model J) Page 89
Page 90
16.4.3 Removal of the Backup Batteries
A
A
B
1. Disconnect all the battery
terminal leads.
2. Remove the four retaining
screws for the first two battery
blocks.
3. Remove the two batteries.
4. Remove the two fixing screws and washers (A),
securing the fixing bracket (B) for the third battery.
5. Slide the battery forward and lift clear.
6. Remove the two fixing screws to release the
bracket from the battery block.
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Page 91
7. Remove the two screws retaining the bracket to
the battery.
8. Reversing the procedure for replacement of the batteries, re-install all the electronic
module components.
Note: When refitting the batteries the screws require a torque setting of 1.2Nm
9. Carry out the following to complete the 24 month overhaul.
10. Carry out the 12 & 36 month preventative maintenance procedure.
16.4.4 Setup
1. Reset the time and date.
2. Carry out the two point oxygen calibration.
3. Carry out a full functional test.
4. Replace all the covers.
(Model J) Page 91
Page 92
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Page 92 (Model J)
Page 93
48 Month / 20,000 Hour Overhaul
(Model J) Page 93
Page 94
16.5 48 month / 20,000 hour overhaul procedure
A
B
C
D
E
F
F
F
F
F
F
F
The procedure for the 48 month / 20,000 overhaul is as follows for Options 1 and 2.
1. Remove the outer cover, inner cover and base
plate
2. Remove the front facia panel by removing the
attaching countersunk screws.
Note: The front facia panel cannot be
removed completely as it remains connected
via two electrical cables to the electronic unit.
3. Disconnect the following tubes connected to ports (A & B).
Note: Tubing removed for clarity.
4. Disconnect the three looms (C, D & E) from the bulkhead connectors.
5. Remove the seven fixing screws and washers (F).
Page 94 (Model J)
Page 95
6. Attach the new pneumatic unit (reverse of removal).
Note: The service exchange or the new pneumatic unit will be Model M-1 in design.
Please refer to the Model M & M-1 service manual available from the SLE service
department.
7. Refit the front facia panel.
8. Carry out the replacement procedure for the following items, CPU battery and backup
batteries.
9. Replace inner and outer covers.
10. Carry out a full system calibration, followed by a complete functional tests.
11. After calibration and functional testing, carry out a full electrical safety test.
(Model J) Page 95
Page 96
16.6 48 month overhaul procedure using N9410/48/G overhaul kit.
B
C
A
E
F
D
The overhaul of the electronic unit follows the same procedure as that of a 24 month
overhaul.
16.6.1 Pneumatic unit 48 month overhaul procedure
Note: Replace any tubing deemed to be brittle, damaged or discoloured. Tubing
should be removed and replaced as the item it is attached to is removed from the
pneumatic unit.
16.6.2 Removal of N0280/03 High Speed Jet Valve Assembly
1. Disconnect the following tubes:
(A) forward jet supply tube
(B) reverse jet supply tube
(C) mean jet delivery tube
2. Disconnect the electrical connectors
from PR3 (D), PR4 (E) and PR6 (F).
Page 96 (Model J)
Page 97
3. Disconnect the earth strap (G). Retain
G
H
J
J
J
J
K
L
the fixing screw. Disconnect the
electrical connector (H).
4. Remove the four nuts and washers (J)
securing the pressure regulator
manifold assembly.
5. Remove the pressure regulator
manifold with the high speed valve
assembly attached.
6. Separate the high speed valve
assembly (K) from the pressure
regulator manifold (L). Place the
pressure regulator manifold to one
side.
7. Discard the high speed valve assembly
(K) as per the WEEE directive.
(Model J) Page 97
Page 98
8. Remove and discard the following two
M
P
O
Q
Q
R
Q
Q
tubes.
Fresh gas supply tube (M).
9. Remove the nut and washer (O)
retaining the other end of the earth
strap (P).
10. Locate the two screws (Q) ret aining the
jet block.
11. Remove the old jet block (R) and
discard.
Discard the screws (Q).
Page 98 (Model J)
Page 99
16.6.3 Removal of N0280/01 blender
B
F
C
D
A
E
H
G
J
1. Disconnect and remove the following tubes:
(A) fresh gas supply tube,
(B) fresh gas dump tube,
(C) O2 cell sample dump tube,
(D) fresh gas to PRV1 tube,
(E) blender O
(F) air inlet tube,
(G) forward jet supply tube,
(H) proximal airway bleed tube,
supply tube,
2
2. Disconnect the electircal connector (J).
(Model J) Page 99
Page 100
3. Remove the nuts and washers (K) to release the blender manifold assembly (L).
K
K
K
K
L
D
A
F
C
B
E
E
4. Lift the manifold assembly (J) off the four chassis studs. Disconnect the O2 cell (K).
16.6.4 Removal of the pressure regulators from the old manifold
1. Remove the pressure
regulators (A, B & C)
from the manifold block
(D) remove the screws
(E), two per regulator.
Note: that the old ‘O’ rings (F) should be discarded.
Page 100 (Model J)
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