Datex-Ohmeda Ohmeda Excel 210 User manual

Excel 210 MRI Compatible

Anesthesia Machine

Operation and Maintenance Manual

User Responsibility

This Product will perform in conformity with the description thereof contained in this operating manual and accompanying labels and/or inserts, when assembled, operated, maintained and repaired in accordance with the instructions provided. This Product must be checked periodically. A defective Product should not be used. Parts that are broken, missing, plainly worn, distorted or contaminated should be replaced immediately. Should such repair or replacement become necessary, Datex-Ohmeda recommends that a telephonic or written request for service advice be made to the nearest Datex-Ohmeda Field Service Support Center. This Product or any of its parts should not be repaired other than in accordance with written instructions provided by DatexOhmeda and by Datex-Ohmeda trained personnel. The Product must not be altered without the prior written approval of Datex-Ohmeda’s Quality Assurance Department. The user of this Product shall have the sole responsibility for any malfunction which results from improper use, faulty maintenance, improper repair, damage, or alteration by anyone other than Datex-Ohmeda.

CAUTIONCAUTION

CAUTION U. S. Federal and Canadian law restrict this device to sale by or on the order of a

CAUTIONCAUTION

licensed medical practitioner. Outside the U. S. A. and Canada, check local laws for any restrictions that may apply.

Datex-Ohmeda products have unit serial numbers with coded logic which indicates a product group code, the year of manufacture and a sequential unit number for identification.

AAA A 12345

This alpha character indicates the year of product manufacture and when the serial number was assigned; “Y” = 1995, “Z” = 1996, “A” = 1997, etc. “I” and “O” are not used.

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Table of Contents

1/Introduction

Introduction to the Excel MRI Compatible Anesthesia System 1-1 How to use this manual 1-2 Symbols used in the manual or on the equipment 1-3

2/General Information

Identifying Excel MRI components and controls 2-1 Identifying 5125 O

3/Set Up

Before starting to setup the system 3-1 Mounting gas cylinders 3-1 Mounting the 5125 O Circuit and monitoring connections 3-4

4/Preoperative Checkout

Before starting the checkout 4-1 MRI compatibility check 4-1 Initial Checks 4-2 Checking vaporizer mounting 4-3 Checking cylinder and pipeline supplies 4-3 Checking vaporizer back pressure 4-4 Leak checking the low pressure circuitry 4-4 Checking the gas flow controls 4-6

Monitor components and controls 2-6

Monitor 3-2

5/Maintenance

Breathing system checks 4-7 5125 O

Maintenance schedule 5-1 Cleaning and sterilization 5-2

Monitor checks 4-7

Cleaning 5-2 Sterilization 5-3 Special precautions for rubber articles 5-3

sensor maintenance 5-3

Installing a cartridge or disassembling the O Cleaning and sterilization 5-6 Replacing the 5125 O

Monitor battery 5-7

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sensor for cleaning 5-3

Table of Contents

6/Troubleshooting

Repair policy 6-1

7/Illustrated Parts

Appendix

Warranty

Problems with the 5125 O

Calibration and drift 6-1 5125 O

Pneumatics problems 6-3

Excel specific parts 7-1 MRI Compatible accessories 7-1 5125 O Where to find additional part numbers 7-2

Excel Pneumatics A-1 Excel MRI System Specifications A-4

Monitor alarms 6-2

Monitor accessories 7-2

Monitor 6-1

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1/Introduction

WARNINGWARNING

WARNING Using an MRI system in conjunction with general anesthesia on cardiac patients,

WARNINGWARNING

febrile patients, and patients with impaired ability to perspire may present a patient health hazard.

In this sectionIn this section

In this section

In this sectionIn this section

Introduction to the Excel MRI Compatible Anesthesia System 1-1

How to use this manual 1-2

Symbols used in the manual or on the equipment 1-3

Introduction to the Excel MRI Compatible Anesthesia SystemIntroduction to the Excel MRI Compatible Anesthesia System

Introduction to the Excel MRI Compatible Anesthesia System

Introduction to the Excel MRI Compatible Anesthesia SystemIntroduction to the Excel MRI Compatible Anesthesia System

The Datex-Ohmeda commitment to meeting your anesthesia needs continues with the Excel Magnetic Resonance Imaging (MRI) Compatible Excel Anesthesia System.

Basic features

The Excel MRI System includes:

• Three gases, oxygen, nitrous oxide, and air. All gases have pipeline and cylinder connections.

• The 5125 MRI Compatible O battery and hardware self tests.

• A two vaporizer manifold.

MRI Compatibility

The Excel MRI is constructed primarily of non-ferous materials to help prevent attraction to the cryogenic magnets in MRI systems.

The Excel MRI and attached accessories performed to specifications when tested together as a system directly next to an unshielded, 1.5 Tesla MRI unit with a magnetic fringe field below 0.23 Tesla (2300 Gauss).

Approved accessories

A wide variety of Datex-Ohmeda accessories have been approved for use in conjunction with the Excel MRI under test conditions:

WARNINGWARNING

WARNING The MRI compatibility of these accessories applies to specific accessory models and

WARNINGWARNING

is limited to use as part of the Excel MRI System. None of these accessories have been tested for stand alone use in an MRI environment or in magnetic fringe fields above 0.23 Tesla (2300 Gauss).

Monitor with adjustable high and low O2 alarms, and built in

1-1

• Tec 4 or 5 vaporizers; keyed or funnel fill models.

• GMS Absorber, PEEP valve, and Bain Circuit adapter

• Waste Gas Scavenging Valve

• 121 Respirometer

• Standard or free flow suction regulator kits

• Auxiliary oxygen flowmeter

• Flip-up shelf

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1-1

1/Introduction

• Storage cabinets

• Dovetail mounted accessories: a 1 x 3.5 inch post with two inch extension; a 12 inch IV Pole; a large case Tycos gauge; and holders and regulators for E-size O

Because approval applies only to specific accessory models, consult the Illustrated Parts Section of this manual for Stock Numbers.

Safety features

The Excel MRI includes several important safety features:

• The Datex-Ohmeda Link 25 Proportion Limiting Control System limits the lowest oxygen concentration that can be delivered on the Excel MRI to a nominal 25% for O the common gas outlet.

and N2O cylinders.

2/N2

O mixtures at

• An audible low O (30 psig).

•N

O and air flows stop if O2 supply pressure falls below a nominal 138 kPa (20 psig).

• An interlock mechanism that helps prevent more than one Datex-Ohmeda Tec 4 or Tec 5 vaporizer from being “On” at once. An isolation system also helps prevent fresh gas from entering a vaporizer that is not switched “On.”

• Low battery alarms and built in self tests on the 5125 O

• Differentiated pipeline and cylinder gauges.

• Gas specific pipeline and cylinder connections.

• A guarded O

• Color coded flow controls and pressure gauges.

supply alarm alerts you if the O2 pressure falls below a nominal 207 kPa

Monitor.

flush button.

Operator convenience

For your convenience, the Excel MRI also features:

• An O

• Full length dovetail accessory mounting.

• A single action brake/footrest.

• Shelf space for additional monitoring.

power outlet

• Large, easy-running casters and a compact frame.

How to use this manualHow to use this manual

How to use this manual

How to use this manualHow to use this manual

This manual covers the Excel MRI System and the MRI Compatible 5125 O2 Monitor. Vaporizers, the GMS Absorber, the Waste Gas Scavenging Valve and other major accessories also have individual operation and maintenance manuals. A complete set of operation and maintenance manuals comes with the Excel MRI System. Datex-Ohmeda recommends that you keep this manual and all related manuals available for reference.

If you are using the system for the first time, read this manual first. Then read the operation and maintenance manuals for the system components. Before you go on to Chapter 2, “General Information,” make sure that you understand the symbols listed at the end of this chapter.

If you have used the Excel MRI before, complete the step-by-step set up procedure in Chapter 3. Then turn to Chapter 4 “Preoperative Checkout,” which is required before using the Excel MRI.

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1-2

1/Introduction

Before cleaning the Excel MRI, read Chapter 5, “Maintenance,” carefully. This section also tells you how to change the O cartridge replacement, disassembly for cleaning).

Chapter 6, “Troubleshooting,” helps you solve problems that may occur with the Excel MRI or the 5125 O you can replace or an internal fault that requires a service call? (If the leak follows a particular vaporizer and the external o-ring is in place, replace the vaporizer.)

Chapter 7, “Illustrated Parts,” tells you how to order replacement parts and accessories. It also lists part numbers for all operation and maintenance manuals associated with the Excel MRI System.

Monitor. For example, how can you tell if a low pressure leak is due to a vaporizer that

Monitor battery and assemble and service the O2 sensor (sensor

The Appendix lists Excel MRI and 5125 O pneumatic circuitry of the Excel MRI.

Please also take a moment to review the User Responsibility Statement on the inside of the front cover; it describes what is expected of you to maintain the Excel MRI. Also read the Warranty on the back cover; it outlines Datex-Ohmeda’s responsibility in case of a functional defect.

Symbols used in the manual or on the equipmentSymbols used in the manual or on the equipment

Symbols used in the manual or on the equipment

Symbols used in the manual or on the equipmentSymbols used in the manual or on the equipment

WarningsWarnings

Warnings and w

WarningsWarnings

obey all of the instructions in this manual.

Warnings tell you about a condition that can cause injury to the operator or the patient. Cautions tell you about a condition that can cause damage to the equipment. Read and obey all warnings and cautions.

Other symbols replace words on the equipment or in Datex-Ohmeda manuals. No one device or manual uses all of the symbols. These symbols include:

Cautions Cautions

Cautions tell you about dangerous conditions that can occur if you do not

Cautions Cautions

On (power)

Off (power)

Monitor specifications and describes the internal

1-3

o q p

œ †

∏ x

Standby

Standby or preparatory state for a part of the equipment

“ON” only for part of the equipment

“OFF” only for part of the equipment

Direct Current

Alternating Current

Protective earth ground

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1-3

1/Introduction

y r å Y

t T

Ë P

Earth Ground

Frame or chassis ground

Alarm silence button

Equipotential

Variability

Variability in steps

Plus, positive polarity

Minus, negative polarity

Lamp, lighting, illumination

Movement in one direction

ˆ z

134°C Autoclavable

m µ H

w wW

Movement in both directions

Lock

Unlock

Non-autoclavable

Type B equipment

Type BF equipment

Type CF equipment

Caution, ISO 7000-0434

Attention, consult accompanying documents, IEC 601-1

1-4

Ê π

This way up

Dangerous Voltage

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1-4

1/Introduction

≈ Ù

REF

Input

Output

Stock Number

Serial Number

Systems with this mark agree with European Council Directive (93/42/EEC) for Medical Devices when they are used as specified in their Operation and Maintenance Manuals. The xxxx is the certification number of the Notified Body used by Datex-Ohmeda’s Quality Systems.

Read top of float

Vacuum inlet

Suction bottle outlet

O2+ O2 Flush button

Cylinder

Isolation transformer

Linkage system

Risk of Explosion

Low pressure leak test

R Bag position/ manual ventilation u Open drain (remove liquid) U Close drain q Inspiratory flow Q Expiratory flow

1-5

t O

sensor connection

r Mechanical ventilation

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1-5

1/Introduction

End case

< 345 kPa

< 414 kPa

O2%

The primary regulator is set to pressure less than 345 kPa

The primary regulator is set to pressure less than 414 kPa

European Union Representative

Low O

alarm limit switch

High O

alarm limit switch

Battery test

Circuit test

Test switch

1-6

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1-6

2/General Information

In this sectionIn this section

In this section

In this sectionIn this section

Identifying Excel MRI components and controls 2-1

Identifying 5125 O

WARNINGWARNING

WARNING The Datex-Ohmeda Excel System must only be used with non-flammable anesthetic

WARNINGWARNING

Monitor components and controls 2-6

agents.

Identifying Excel MRI components and controlsIdentifying Excel MRI components and controls

Identifying Excel MRI components and controls

Identifying Excel MRI components and controlsIdentifying Excel MRI components and controls

The figures in this chapter, show control locations on Excel MRI System components. For more information on GMS Absorber, or vaporizer controls, refer to the individual operation and maintenance manual.

1. System Master Switch

2. Flush Button

3. Common Gas Outlet

4. Drawer Cabinet (Optional Accessory)

5. Brake Bar and Footrest

6. Absorber Arm Button

7. O2 Power Outlet

8. Flow Controls

9. 5125 O2 Monitor

2 3

AA.19.039

Figure 2-1

Front view of Excel MRI

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2-1

2/General Information

Flow controls

With the system master switch set to “On,” turning a flow control counterclockwise increases flow, turning a flow control clockwise decreases flow. A linkage between the N controls limits the lowest oxygen concentration that can be set on the Excel MRI to a nominal 25% for O up to two additional turns of the knob); N knob ); air, 0 to 15 l/min (plus up to one additional turn of the knob).

System master switch

Setting the system master switch to “On” allows gas to flow through the Excel MRI.

Flush button

Pressing the O2 Flush button delivers 45-70 l/min of O2 through the common gas outlet.

Common gas outlet

The common gas outlet delivers anesthetic gases to the patient circuit.

Brake

Push down to keep the Excel MRI from rolling. Lift up to release.

O mixtures at the common gas outlet. Flow ranges are: O2, 200 ml/min to 10 l/min (plus

2/N2

O and the O2 flow

O, 0 to 10 l/min (plus up to one additional turn of the

Absorber arm button

Press this button to adjust the height of the absorber arm.

O2 power outlet

Provides drive gas for MRI compatible pneumatic equipment.

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2-2

2/General Information

1 2

1. Cylinder Connection

2. Pipeline Connection

AA.19.040

Figure 2-2

Excel MRI (rear)

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2-3

2/General Information

Vaporizer concentration control

Press in the release and turn the concentration knob to the desired agent concentration. The locking lever must be fully clockwise (locked position) or the control will not turn.

Concentration control release

Pressing the release allows you to turn the concentration knob on the vaporizer.

Vaporizer locking lever

When the locking lever is completely counterclockwise, and the vaporizer concentration is set to “Off,” you can mount or remove the vaporizer. Turn the lever clockwise to lock the vaporizer in position.

Vaporizer fill port valve

Opens the fill port valve so that agent can be added or drained.

Vaporizer key lock lever

Holds the fill adapter from the agent bottle in place. To secure the adapter, lower the lever, insert the adapter, and raise the lever.

Vaporizer fill port (spout)

Unscrew and remove the plug to fill or drain vaporizers with funnel fill ports.

Drain Plug

Loosen (do not remove) with hex head portion of spout to drain agent. Tighten drain plug and install spout before use.

AA.13.004

1. Vaporizer Concentration Control

2. Vaporizer Fill Port (Spout)

3. Drain Plug and Drain Port

4. Vaporizer Fill Port Valve

5. Vaporizer Fill Port (Keyed)

6. Vaporizer Key Lock Lever

7. Concentration Control Release

8. Vaporizer Locking Lever

AA.13.003

Figure 2-3

Tec 5 vaporizers

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2-4

2/General Information

Absorber drain plug

Unscrew and remove to drain condensate. Replace and tighten before use.

APL valve

This valve limits patient circuit pressure during manual ventilation (bagging).

Absorber check valves

Provide unidirectional flow through the absorber.

Airway pressure gauge

Absorber gauge to display inspiratory pressure.

Absorber release lever

This lever should always be in the lock position during use. The release position lowers the absorber base so that you can remove the canisters.

Absorber mounting knob

Turn completely clockwise to attach the absorber to the mounting pin. Turn counterclockwise to remove the absorber.

Bag/Ventilator switch

This switch on the absorber selects either the bag arm (Bag position) or the ventilator bellows (Vent position).

1. Bag/Ventilator Switch

2. Airway Pressure Gauge

3. APL Valve

4. Absorber Check Valves

5. Fresh Gas Input

6. Absorber Release Lever

7. Absorber Mounting Knob

8. Absorber Drain Plug

3 41

AA.15.153

8 7

AA.15.152

Figure 2-4

GMS Absorber

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2-5

2/General Information

Identifying 5125 OIdentifying 5125 O

Identifying 5125 O

Identifying 5125 OIdentifying 5125 O

Figure 2-5 identifies 5125 O2 Monitor controls and major components.

Monitor components and controls Monitor components and controls

Monitor components and controls

Monitor components and controls Monitor components and controls

5125

MD.12.013

MD.12.014

10 mV per

1. Battery

2. Calibration Control

Min R

20M

1213

MD.12.019

3. Test Switch

4. O2 Alarm Limits

5. Display

6. Alarm LEDs

7. Battery Power Switch

8. Alarm Silence

9. Sensor Housing

10. O-Ring

11. Sensor Cartridge

12. O2 Sensor Connection

13. Remote Connection (Refer to Appendix for Signal Specifications)

14. Front Panel

MD.02.032

910119

Figure 2-5

5125 O

Monitor controls

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2/General Information

Test switch

Pressing down the top half of the switch (Batt Test) checks the battery condition. Holding down the bottom half of the switch (Circuit Test) checks the 5125 O information about using the switch, refer to the section “5125 O Chapter 4.

Low O2 alarm

Sets the lowest acceptable O2 concentration. O2 concentrations below 18% trigger a low O2 alarm regardless of the alarm limit. Setting the limit below 18% also triggers an alarm.

High O2 alarm

Sets the highest allowed O2 concentration (0 to 99%). Setting the limit to 00% disables the alarm.

Display

Shows the measured O2 concentration and any alarm messages.

Battery Power switch

Switches the 5125 O2 Monitor “On” and “Off.”

Alarm Silence

Monitor’s electronic circuitry. For

Monitor checks” at the end of

Pressing the alarm silence button silences all audible alarms, except for low O2, until the next occurrence. Low O LEDs stay on continuously.

alarms are silenced for 30 seconds. While the alarm is silenced, any flashing

O2 sensor housing and cartridge

The 5125 O2 Monitor uses the standard Datex-Ohmeda O2 sensor. The sensor cartridge is not part of the O section “O

sensor assembly and must be installed before use. For additional information refer to the

sensor maintenance” in Chapter 5.

Battery

The 5125 O2 Monitor uses a “C” size, non-magnetic, 3.9 Vdc lithium battery. During operation, the “BATT FAIL” alarm continuously monitors battery strength.

Calibration control

Use the calibration control (CAL) to calibrate the 5125 O2 Monitor for 21% and 100% O2. Refer to “5125 O

Monitor checks” at the end of Chapter 4.

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2-7

2/General Information

Notes

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2-8

3/Setup

In this sectionIn this section

In this section

In this sectionIn this section

Before starting to setup the system 3-1

Mounting gas cylinders 3-1

Mounting the 5125 O

Circuit and monitoring connections 3-4

Before starting to setup the systemBefore starting to setup the system

Before starting to setup the system

Before starting to setup the systemBefore starting to setup the system

WARNINGWARNING

WARNING Remove the Excel MRI from the MRI room before starting the setup procedure. Do not

WARNINGWARNING

add or remove any anesthesia system components while the Excel MRI System is in the MRI room.

1. Remove the Excel MRI System from the MRI room before starting the setup procedures.

2. Complete the setup procedure outside the MRI environment.

3. Do not move the Excel MRI System into the MRI room until you complete the first three

sections of the checkout procedure (“MRI compatibility check,” “Initial checks,” and “Checking vaporizer mounting”).

Mounting gas cylindersMounting gas cylinders

Mounting gas cylinders

Mounting gas cylindersMounting gas cylinders

WARNINGWARNING

WARNING Use only non-magnetic gas cylinders on the Excel MRI System.

WARNINGWARNING

monitor 3-2

1. Set the system master switch to “Off.”

2. Swing out the yoke clamp.

3. Unscrew the tee handle until the screw is flush with the inside of the clamp.

4. Make sure that the cylinder valve is not covered by a dust cap. Remove dust cap if present.

5. Remove the old cylinder gasket if present and install a new gasket.

Note: Make sure that the old gasket does not stick to the cylinder.

CAUTIONCAUTION

CAUTION Use one cylinder gasket per yoke. Extra gaskets may cause a leak. Not using a

CAUTIONCAUTION

cylinder gasket will also cause a leak.

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3-1

3/Setup

1. Gasket

2. Tee Handle

3. Yoke Clamp

4. Pipeline Inlet

1 23 4

AA.11.194

Figure 3-1

Mounting gas cylinders

6. Line the yoke index pins up with the cylinder post and swing the clamp closed.

7. Hand tighten the tee handle to secure the cylinder.

8. Install cylinder plugs and gaskets in all unused yoke positions.

9. Verify that the cylinder wrench is present.

WARNINGWARNING

WARNING Always close the cylinder valve when you are using a pipeline supply. If a cylinder

WARNINGWARNING

valve is open and the pipeline and regulated cylinder pressures are equal, both supplies may be used simultaneously, leaving an insufficient reserve in case of pipeline failure.

Mounting the 5125 OMounting the 5125 O

Mounting the 5125 O

Mounting the 5125 OMounting the 5125 O

1. Tighten the thumb screw on the mounting post. This pushes a spring loaded plate in, reducing

the width of the block.

2. Fit the mounting block into the mounting track on the left hand side of the Excel MRI. Loosen

the thumb screw. This wedges the plate against the sides of the mounting track.

monitor monitor

monitor

monitor monitor

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3-2

3/Setup

MD.12.008

2 3

1. O2 Monitor

2. O2 Sensor Connection

3. Nut

4. Clamp

5. Thumb Screw

6. Plate

7. Utility Post

8. Mounting Track

Figure 3-2

Mounting the 5125 O2 Monitor

3. Make sure that the utility post is secure and that both sides of the block are wedged into the

rail.

4. Screw the clamp into the threaded hole in the back of the 5125 O

Monitor.

5. Attach the clamp to the utility post.

6. To adjust the angle of the 5125 O

Monitor, loosen the nut behind the monitor, reposition the

monitor and tighten the nut.

7. Connect the O

in Chapter 5 for O

sensor to the 5125 O2 Monitor. Refer to the section “O2 sensor maintenance”

sensor assembly instructions.

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3/Setup

Circuit and monitoring connectionsCircuit and monitoring connections

Circuit and monitoring connections

Circuit and monitoring connectionsCircuit and monitoring connections

Use this section as a quick reference if you are already familiar with system connections. For detailed information and accessory part numbers, refer to the individual operation and maintenance manual.

WARNINGWARNING

WARNING Use only Datex-Ohmeda specified cables, hoses, and tubing for external connec-

WARNINGWARNING

tions. Alternative cables, hoses, or tubing could cause false sensor readings or damage to the system.

1. Set the system master switch to “Off.”

2. Make sure that the absorber and the 5125 O

3. Make the monitoring connections:

WARNINGWARNING

WARNING Figure 3-3 and 3-4 show the only approved use of the 121 Respirometer with the

WARNINGWARNING

Monitor are securely mounted.

Excel MRI.

• Refer to Figure 3-3 if you have a GMS absorber

• Refer to Figure 3-4 if you do not have a GMS absorber

Output Sensor

1. O2 Sensor

2. GMS Absorber

3. Absorber Expiratory Port

4. 121 Respirometer

5. 5125 O2 Monitor

Figure 3-3

sensor connection to a GMS Absorber

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AA.19.036

3-4

3/Setup

WARNINGWARNING

WARNING Any absorber used in an MRI environment must be MRI compatible.

WARNINGWARNING

CAUTIONCAUTION

CAUTION The cable on the O2 sensor must point up to help keep the front (sensing portion) of

CAUTIONCAUTION

the cartridge free of condensate.

12 3

1. O2 Sensor

2. Adapter (22 mm Inner Diameter)

3. Absorber Inspiratory Port

4. Absorber Expiratory Port

5. 121 Respirometer

6. 5125 O2 Monitor

Output Sensor

AA.19.037

Figure 3-4

O2 sensor connection to a MRI compatible absorber other than the GMS

4. Determine if the O

a. The O

sensor is ready for immediate use if it has not been disconnected since the last

sensor is ready for immediate use or if it must be allowed to stabilize:

time you used the Excel System.

b. If you just installed a new O

ing, it must be connected and allowed to stabilize for five minutes before it can be used.

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sensor cartridge directly from its sealed protective packag-

3-5

3/Setup

c. If the O2 sensor was disconnected or a new O2 sensor was previously removed from its

protective packaging, it must be connected and allowed to stabilize. Allow the O to stabilize for as many hours as it was disconnected or removed from its package (up to a maximum of 24 hours).

WARNINGWARNING

WARNING Any ventilator used with the Excel must have a high pressure alarm and relief system

WARNINGWARNING

for the patient circuit.

5. Make the fresh gas and gas scavenging connections:

WARNINGWARNING

WARNING The fresh gas hose must be securely connected to the common gas outlet and the absorber.

WARNINGWARNING

• Fresh gas input from the Excel MRI common gas output to the absorber input.

WARNINGWARNING

WARNING Do not connect the exhaust directly to a vacuum source. The vacuum may draw necessary

WARNINGWARNING

gases from the patient circuit. Refer to the operation and maintenance manual for the waste gas scavenging valve for additional precautions and information.

• From the excess gas outlet on the absorber to a gas scavenging system. Use 19 mm corrugated tubing.

sensor

1. Common Gas Outlet

2. Absorber

3. Exhaust (Connect to Waste Gas Scavenging)

Figure 3-5

Excel MRI fresh gas connection

AA.11.226

6. Verify that an O2 cylinder is installed.

7. Set the Ventilator/Bag selector switch to the “Bag” position and install a breathing bag on the

bag arm.

8. Turn all flow controls completely clockwise (minimum flow).

9. Continue with Chapter 4, “Preoperative Checkout.”

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4/Preoperative Checkout

In this sectionIn this section

In this section

In this sectionIn this section

Before starting the checkoutBefore starting the checkout

Before starting the checkout

Before starting the checkoutBefore starting the checkout

This section—“Preoperative Checkout” —describes the minimum checks that should be made before the Datex-Ohmeda Excel MRI System is used on a patient. Do not use the system if it does not function correctly, as described in the preoperative checkout procedures; instead call a qualified service representative.

WARNINGSWARNINGS

WARNINGS Always complete the preoperative checkout procedures in this section before using

WARNINGSWARNINGS

the Excel MRI System on a patient.

w Make sure that you understand the correct connection, use and necessary precau-

tions for all system components before using the Excel MRI System. For additional precautions and information, refer to the operation and maintenance manuals for each component.

MRI compatibility checkMRI compatibility check

MRI compatibility check

MRI compatibility checkMRI compatibility check

WARNINGSWARNINGS

WARNINGS Do not move the Excel MRI into the MRI room until you have completed the first three

WARNINGSWARNINGS

sections of this chapter “MRI compatibility check,” “Initial checks” and “Checking vaporizer mounting.” Complete the rest of the checkout using the actual room, pipeline and electrical supplies and gas cylinders that will be used during the case.

Monitor checks 4-7

w Datex-Ohmeda strongly recommends using only monitor sensors that are compatible

with MRI applications. Use of monitoring device sensors (ECG monitor leads, oximeter probes, etc.) in an MRI environment can cause injury. Check sensor locations on the patient’s body for signs of discomfort, heating or warming.

1. Check that the gas cylinders are non-magnetic.

2. Open any drawers and check that they contain only MRI compatible items. Test any suspect

items. Remove any items that are not MRI compatible.

3. If a ventilator is connected that is not MRI compatible (e.g. a Datex-Ohmeda 7000 or a 7800

Ventilator), remove it from the Excel MRI. Any ventilator used must be MRI compatible.

WARNINGWARNING

WARNING Use only MRI compatible accessories with the Excel MRI. This includes monitors.

WARNINGWARNING

4. Remove any other accessories that are not MRI compatible.

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4/Preoperative Checkout

Initial checksInitial checks

Initial checks

Initial checksInitial checks

CAUTIONCAUTION

CAUTION Do not exceed the following shelf weight limits: top shelf, 23 kg (50 lbs); middle

CAUTIONCAUTION

shelf, 11 kg (24 lbs). Verify that all equipment on the top shelf is securely strapped in place.

1. Check the overall integrity of the machine. Make sure that:

• The casters are securely attached

• All accessories are properly mounted

• Setting the brake helps prevent the front casters from turning

2. Make sure the breathing circuit is complete, undamaged, and, if appropriate, contains

adequate CO

WARNINGWARNING

WARNING Ensure that all hoses, tubing, and other circuit connections are made properly before

WARNINGWARNING

using this anesthesia system. Failure to do so may result in patient injury. Refer to the operation and maintenance manuals for these devices.

3. Make sure that the following are not damaged:

absorbent.

• Cylinder yokes

• Pipeline inlets

• Flowmeters and flow control valves

• Pressure gauges

• Vaporizers

• Monitors and cables

• All hoses and tubing

4. Make sure the breathing circuit is closed and connected to a gas scavenging system.

5. Check that the cylinders are properly installed.

6. Check that the vaporizers are properly installed.

7. Check that the cylinder wrench is available.

8. Check that the brake is set.

9. Make sure that required emergency equipment is available and in good working order.

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4-2

4/Preoperative Checkout

Checking vaporizer mountingChecking vaporizer mounting

Checking vaporizer mounting

Checking vaporizer mountingChecking vaporizer mounting

You can use both Tec 4 and Tec 5 vaporizers with the Excel MRI System. If a Tec 4 and a Tec 5 vaporizer are used together, the interlock system still helps prevent more than one vaporizer from being switched “On” at the same time.

WARNINGWARNING

WARNING Do not attempt to modify the system to accept Datex-Ohmeda Tec 3 vaporizers. Tec 3

WARNINGWARNING

vaporizers are not MRI compatible.

1. Make sure that the tops of the vaporizers are parallel to the top edge of the manifold. Re-

mount any vaporizers that are out of line.

2. Make sure the vaporizers are locked in place. Check the vaporizers’ locking knobs to ensure

that the vaporizers are locked in place.

3. Attempt to lift each vaporizer off of the manifold. Remount any vaporizer that is not securely

locked in place.

WARNINGWARNING

WARNING Do not use a vaporizer that continuously lifts off the manifold when its locking lever is

WARNINGWARNING

in the lock position.

4. Check that the interlock rods are aligned. Attempt to switch “On” more than one vaporizer at a

time. Try every combination that is possible with your system. If more than one vaporizer can be switched “On” at a time, remount the vaporizers and repeat this step.

WARNINGWARNING

WARNING Do not use the system if the vaporizer interlock system allows more than one vapor-

WARNINGWARNING

izer to be switched “On” at a time.

5. Fill the vaporizers as described in the vaporizer operation and maintenance manual.

Checking cylinder and pipeline suppliesChecking cylinder and pipeline supplies

Checking cylinder and pipeline supplies

Checking cylinder and pipeline suppliesChecking cylinder and pipeline supplies

Complete this section and the rest of Chapter 4 in the MRI room. The MRI System should be switched “On” during this portion of the checkout procedure.

1. With the cylinders closed, make sure the cylinder gauges read zero.

If the cylinder gauges do not read zero, the cylinders may have been previously opened. Briefly set the system master switch to “On” and open the flow control valves to bleed pressure.

CAUTIONSCAUTIONS

CAUTIONS Open cylinder valves slowly to help avoid damaging the regulators.

CAUTIONSCAUTIONS

w Forcing the flow controls can cause serious damage to the Excel MRI.

2. Close all flow control valves and open the cylinders. Check that the cylinder gauges show

adequate pressure.

3. Close all of the cylinder valves and note the value on each cylinder pressure gauge. The

gauges must show less than a 690 kPa (100 psig) pressure drop in a five minute period. If the pressure drop exceeds this limit, the high-pressure circuit has an unacceptable leak.

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4-3

4/Preoperative Checkout

If there is an unacceptable leak:

a. Check for a defective cylinder gasket, an extra cylinder gasket, or a loose tee handle.

Replace the gasket(s) with a single, undamaged gasket or tighten the tee handle.

b. Repeat the leak check. If the circuit still leaks, do not use the system for clinical applica-

tions. Call a qualified service representative for repairs.

4. Connect pipeline supplies and check that pipeline pressure gauges read approximately

310-345 kPa (45-50 psig ).

Checking vaporizer back pressureChecking vaporizer back pressure

Checking vaporizer back pressure

Checking vaporizer back pressureChecking vaporizer back pressure

WARNINGWARNING

WARNING Follow the appropriate agent evacuation/collection procedures. Use the hospital gas

WARNINGWARNING

evacuation system.

CAUTIONCAUTION

CAUTION Sudden surges can damage the flow control assembly. Make sure that all flow

CAUTIONCAUTION

controls are fully clockwise (minimum flow or off) before setting the system master switch to “On.”

1. Set the system master switch to “On” and adjust the O2 flow to 6 l/min. Verify that the O2 float

does not oscillate or stick.

Note: The pneumatic alarm sounds briefly when the Excel MRI is switched “On.”

2. Adjust vaporizer concentration from 0 to 1% click by click and observe the O

3. Return the vaporizer to “Off.” If O

qualified service personnel.

Note: If replacing the vaporizer allows the Excel MRI System to pass the vaporizer back pressure test, the fault is in the original vaporizer. Remove the original vaporizer from use and contact qualified service personnel to repair it.

4. Repeat steps 2 and 3 for each mounted vaporizer.

Leak checking the low pressure circuitryLeak checking the low pressure circuitry

Leak checking the low pressure circuitry

Leak checking the low pressure circuitryLeak checking the low pressure circuitry

1. Check the low pressure leak test device:

• Block the inlet and squeeze the bulb until it is fully collapsed.

• If the bulb inflates in less than 60 seconds, replace the leak test device.

2. Set the system master switch to “Off:”

Note: The pneumatic alarm sounds when the Excel MRI is switched “Off.”

flow.

flow dropped by more than 1 l/min during step 2, contact

3. Verify that all vaporizers are “Off.” This changes gas routing.

4. Leak check the low pressure circuitry:

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4/Preoperative Checkout

WARNINGWARNING

WARNING A low pressure leak means that metabolic gases and anesthetic agent are leaking

WARNINGWARNING

into the atmosphere instead of going into the patient circuit. Low pressure leaks must be repaired before the Excel MRI is used.

Note: Gas supplies can be left “On” without affecting test results. With the system master switch set to “Off” there should be no flow through the system.

a. Turn the flow controls one and a half turns counter-clockwise.

b. Connect the low pressure leak check device to the common gas outlet.

c. Repeatedly squeeze and release the bulb until it collapses.

Note: The vacuum from the leak check device may cause the floats to rise slightly. This is normal.

d. If the bulb inflates again in 30 seconds or less, there is an unacceptable leak in the low

pressure circuitry.

e. Disconnect the low pressure leak test device.

f. Set one of the mounted vaporizers to 1% and repeat steps b through d.

g. Remove the test device to relieve the vacuum. Then, switch the vaporizer “Off.”

h. Set the second mounted vaporizers to 1% and repeat steps b through d.

i. Remove the test device to relieve the vacuum. Then, switch the vaporizer “Off.”

j. Store the test device in the Excel MRI drawer.

k. Turn all flow controls completely clockwise (minimum flow). Do not over tighten.

CAUTIONCAUTION

CAUTION Verify that all vaporizers are “Off” before continuing.

CAUTIONCAUTION

WARNINGWARNING

WARNING After performing the low pressure leak test, do not use the anesthesia system until

WARNINGWARNING

the system has been purged with oxygen. Using a system that has not been purged with oxygen may result in incorrect gas mixtures and injury to the patient.

5. Reconnect the common gas outlet to the breathing circuit and the scavenging system, set the

system master switch to “On,” adjust the O for one minute.

6. Return the system master switch to “Off.”

flow to 1 l/min and purge the Excel MRI with O

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4-5

4/Preoperative Checkout

Checking the gas flow controlsChecking the gas flow controls

Checking the gas flow controls

Checking the gas flow controlsChecking the gas flow controls

WARNINGWARNING

WARNING The Link 25 Proportion Limiting Control System sets a minimum O2 concentration in

WARNINGWARNING

the fresh gas stream when only O2 and N2O are used. Recirculating through an absorber or using a third gas may still cause a hypoxic mixture to be delivered, especially at low O2 flow rates.

1. Either connect the pipeline supplies or slowly open the cylinder valves.

2. Set the system master switch to “On” and turn all flow control valves completely clockwise

(minimum flow).

3. The oxygen flowmeter should show about 200 ml/min. The other flowmeters should show no

gas flow.

4. Use the Link 25 Proportion Limiting Control System to check the N

O flow control. Observe the

following precautions:

• Adjust only the N

• Start with the N

• Increase the N

O flow control.

O and O2 flow controls at the minimum setting.

O flow as specified in the table and make sure that the O2 flow is in the

allowed range.

• If you overshoot a setting, turn the O

flow control clockwise until the N2O flow decreases

to the previous level.

Set the NSet the N

Set the N

Set the NSet the N to (l/min):to (l/min):

to (l/min):

to (l/min):to (l/min):

O flow controlO flow control

O flow control

O flow controlO flow control

The OThe O

flow must be (l/min) flow must be (l/min)

The O

flow must be (l/min)

The OThe O

flow must be (l/min) flow must be (l/min)

MinimumMinimum

Minimum

MinimumMinimum

MaximumMaximum

Maximum

MaximumMaximum

0.9 0.24 0.36

1.5 0.40 0.61

3.0 0.79 1.22

6.0 1.58 2.44

9.0 2.37 3.66

WARNINGWARNING

WARNING During operation, always use the O2 Flow control to increase total gas flow and the

WARNINGWARNING

N2O flow control to decrease total gas flow.

5. Test link system tracking. Observe the following precautions:

• Start with the N

• Start with an initial O

O flow control set to 9.0 l/min. Adjust only the O2 flow control.

flow between 2.40 and 3.66 l/min and go from higher to lower flow

rates.

• If you overshoot a setting, turn the N rises to the previous level.

Set the OSet the O

Set the O

Set the OSet the O to (l/min):to (l/min):

to (l/min):

to (l/min):to (l/min):

flow control flow control

flow control

flow control flow control

3.0 7.36 11.41

1.0 2.46 3.80

0.5 1.23 1.90

0.3 0.74 1.14

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O flow control counterclockwise until the O2 flow

The NThe N

O flow must be (l/min)O flow must be (l/min)

The N

O flow must be (l/min)

The NThe N

O flow must be (l/min)O flow must be (l/min)

MinimumMinimum

Minimum

MinimumMinimum

MaximumMaximum

Maximum

MaximumMaximum

4-6

4/Preoperative Checkout

WARNINGWARNING

WARNING Do not use the anesthesia system if the Datex-Ohmeda Link 25 Proportion Limiting

WARNINGWARNING

Control System does not operate within permitted ranges. Using an incorrectly operating control system may result in incorrect gas mixtures, and injury to the patient.

6. Adjust all of the gas flows to mid scale. While you are turning the flowmeter knobs, the flowmeter floats must move smoothly.

7. Shut “Off” the oxygen supply either by closing the oxygen cylinder valve, or by disconnecting the oxygen pipeline supply. As pressure bleeds off:

• The oxygen-supply failure alarm must sound.

• All gas flow must fall to zero, with oxygen being the last gas to stop flowing.

8. Turn all of the flow control valve knobs completely clockwise to the minimum flow or closed position. Do not over tighten the valves.

Breathing system checksBreathing system checks

Breathing system checks

Breathing system checksBreathing system checks

Note: Refer to the GMS Absorber Operation and Maintenance Manual for additional information. A condensed version of the checkout is found on the back of the GMS Absorber.

5125 O5125 O

5125 O

5125 O5125 O

1. Complete the GMS absorber checkout procedure.

2. Reconnect the unit for manual ventilation. Remove all occlusions from the circuit. Remove the test plug from the ‘Y’ piece and connect a test lung. Press the Flush button to fill the breathing bag. Set the Bag/Ventilator switch to the “Bag” position and adjust the APL valve to relieve at the desired pressure.

3. If the Excel MRI will not be used immediately, set the system master switch to “Off” and close all gas cylinder valves.

Monitor checks Monitor checks

Monitor checks

Monitor checks Monitor checks

1. Switch the O2 Monitor “On.”

Note: To avoid a long stabilization period, install a new cartridge (five minute stabilization time if just removed from package).

2. Set the alarm switch to 20% and the alarm switch to “00.”

3. Press down and release switch. Check that the “BATT OK” message appears for at least five seconds.

4. Press down and hold the switch. Check that:

O2%

• The alarm speaker beeps once.

• All four messages appear (Figure 4-1).

• An oxygen concentration between 88 and 102% is displayed.

• Both alarm LEDs illuminate.

• When you release the switch “BATT OK” remains for approximately five seconds.

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4-7

4/Preoperative Checkout

Figure 4-1

Circuit test display

MD.07.020

5. Calibrate the O

• Expose the O

Monitor at 21% O2:

sensor to room air and allow the reading to stabilize for two minutes as

room air fills the sensor housing.

• If necessary, remove the two corner screws, open the lower front panel, and adjust the

calibration control (CAL) until the display reads 20%. Then, adjust the CAL control until the display just indicates 21%.

• If you cannot calibrate the O

Monitor, replace the sensor cartridge. Refer to “O2 sensor

maintenance,” in Chapter 5.

6. Set the alarm switch to 22% (1% over the display reading) and check that:

O2%

• The red LED flashes.

LOW O2LOW O2

•

LOW O2 appears in the display.

LOW O2LOW O2

• A two-pitch alarm sounds.

• Pressing the

• Adjusting the alarm switch to 20% (1% below the display reading) stops the alarm.

O2%

button stops the audible alarm for 30 seconds.

O2%

7. Set the alarm switch to 20% (1% below the display reading) and check that:

• The yellow LED flashes.

• HIGH O2 appears in the display.

• An intermittent alarm sounds.

O2%

• Adjusting the alarm switch to 22% (1% over the display reading) stops the alarm.

8. At least once a month and following sensor cartridge replacement, calibrate the O for 100% O

O2%

• Adjust the alarm switch to 00% (alarm disabled).

• Expose the O

sensor to pure oxygen and allow the display to stabilize for two minutes as

oxygen fills the patient circuit.

• Remove the two corner screws, open the lower front cover, and adjust the calibration control

(CAL) until the display reads 99%.

• Expose the O

sensor to room air and allow the display to stabilize for two minutes as

room air fills the sensor housing. If the final reading is outside the allowed range 21 ± 3% (18 to 24%), the sensor cartridge is no longer linear and must be replaced. Refer to “O sensor maintenance,” in Chapter 5.

9. If the system will not be used immediately, switch the 5125 O

4-8 1001-0809-000 11/20/99

Monitor “Off.”

Monitor

4-8

5/Maintenance

In this sectionIn this section

In this section

In this sectionIn this section

Maintenance schedule 5-1 Cleaning and sterilization 5-2

Cleaning 5-2 Sterilization 5-3 Special precautions for rubber articles 5-3

sensor maintenance 5-3

Installing a cartridge or disassembling the O Cleaning and sterilization 5-6

sensor for cleaning 5-3

Replacing the 5125 O

WARNINGSWARNINGS

WARNINGS This manual specifies Krytox® as an oxygen service lubricant. Do not use any lubri-

WARNINGSWARNINGS

Monitor battery 5-7

cant on the Excel MRI that is not specifically approved for use on anesthesia or oxygen equipment. Oil and grease based lubricants burn violently and may explode in the presence of oxygen.

w Static electricity is a fire hazard. Use only anti-static materials to cover the Excel MRI

System and its components.

Maintenance scheduleMaintenance schedule

Maintenance schedule

Maintenance scheduleMaintenance schedule

This schedule lists the minimum maintenance required, based on normal use and typical environmental conditions. Heavier use or unusual environments may require more frequent maintenance. Before any cleaning or sterilization procedure check the section labeled “Cleaning and sterilization.”

Before each useBefore each use

Before each use

Before each useBefore each use Perform preoperative checkout procedure (includes 21% O2 calibrations). DailyDaily

Daily

DailyDaily Clean the external surfaces. Every two weeksEvery two weeks

Every two weeks

Every two weeksEvery two weeks

5-1

Drain and discard anesthetic agent from vaporizers. Less frequent changes may be required if the agent does not contain additives or stabilizing agents.

MonthlyMonthly

Monthly

MonthlyMonthly Calibrate the O Apply Krytox to the threads on the yoke tee handle. Do not lubricate the absorber post assembly. Every three monthsEvery three months

Every three months

Every three monthsEvery three months Contact trained service personnel to perform a full checkout and scheduled service maintenance

on the Excel MRI System (Excel MRI, absorber, and O AnnuallyAnnually

Annually

AnnuallyAnnually Replace the external vaporizer port o-rings. Service Datex-Ohmeda Tec 4 vaporizers at an authorized Datex-Ohmeda service center. Replace the O

(77°F). Different operating condition (higher O2 concentration, high temperature, etc.) can shorten cartridge life expectancy. Freezing may damage the sensor cartridge.

Krytox is a registered trademark of Dupont de Nemours E.I. & Company Inc.

Monitor with 100% O2.

monitor).

sensor cartridge. Cartridge life expectancy is one year at 50% O2 and 25°C

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5-1

5/Maintenance

Every three yearsEvery three years

Every three years

Every three yearsEvery three years Service Datex-Ohmeda Tec 5 vaporizers at an authorized Datex-Ohmeda service center.

As requiredAs required

As required

As requiredAs required Install new cylinder gaskets.

Replace the absorbant in the GMS.

Replace the oxygen monitor battery.

Cleaning and sterilizationCleaning and sterilization

Cleaning and sterilization

Cleaning and sterilizationCleaning and sterilization

CAUTIONSCAUTIONS

CAUTIONS Do not sterilize the Excel MRI or the 5125 O2 Monitor.

CAUTIONSCAUTIONS

w Following ethylene oxide sterilization, quarantine the items in a well ventilated area

to allow dissipation of absorbed ethylene oxide gas. Follow the sterilizer manufacturer’s recommendations for specific sterilization periods.

Cleaning

Use this section as a quick reference once you are familiar with the cleaning procedures found in the individual operation and maintenance manuals.

External surfacesExternal surfaces

External surfaces

External surfacesExternal surfaces To clean external surfaces use a damp cloth and a mild detergent.

Use the minimum amount of liquid necessary since excess liquid may leak into monitoring connections or other electrical components.

Sensor cleaning precautionsSensor cleaning precautions

Sensor cleaning precautions

Sensor cleaning precautionsSensor cleaning precautions Wipe the O2 sensor cable and housing with a damp cloth. Never immerse the O2 sensor assembly

in liquid. Exposure to liquids can damage the electrical contacts.

sensor must be disassembled and the sensor cartridge removed for separate cleaning. The

The O

housing can be cleaned with a damp cloth (water, detergent solution or isopropyl alcohol). Corrosion from leaked sensor electrolyte can be removed with white vinegar under a fume hood.

sensor cartridge contains an electrolyte (caustic). It can be wiped clean with a damp cloth

The O

(water, liquid disinfectant, or white vinegar; do not use alcohols). Special precautions are required. Refer to the “O

Precautions for painted, metal, or plastic surfacesPrecautions for painted, metal, or plastic surfaces

Precautions for painted, metal, or plastic surfaces

Precautions for painted, metal, or plastic surfacesPrecautions for painted, metal, or plastic surfaces Do not use abrasive cleaners. They can mar the finish.

sensor maintenance” section in this chapter for detailed instructions.

5-2

Do not use anesthetic agent or glass cleaners on plastic or painted surfaces. They can mar the surface finish.

Always check cleaning product information to make sure that it is safe for aluminum, painted, or plastic surfaces.

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5-2

5/Maintenance

Sterilization

Use this section as a quick reference once you are familiar with the sterilization procedures found in the individual operation and maintenance manuals.

Items that cannot be sterilized by any methodItems that cannot be sterilized by any method

Items that cannot be sterilized by any method

Items that cannot be sterilized by any methodItems that cannot be sterilized by any method Excel MRI; 5125 O

Items that can be sterilized with ethylene oxideItems that can be sterilized with ethylene oxide

Items that can be sterilized with ethylene oxide

Items that can be sterilized with ethylene oxideItems that can be sterilized with ethylene oxide These items can be sterilized with ethylene oxide: the front half of the oxygen sensor housing and

rubber and plastic articles. Refer to individual operation and maintenance manuals for disassembly instructions and additional information.

Items that can be sterilized with liquid agentsItems that can be sterilized with liquid agents

Items that can be sterilized with liquid agents

Items that can be sterilized with liquid agentsItems that can be sterilized with liquid agents The rubber and plastic articles can be sterilized with a cold germicidal solutions.

Special precautions for rubber articles

Rubber goods deteriorate over time and are considered expendable. The presence of oxygen, ozone, ether, mineral or vegetable oils, phenols, cresols, terpenes, hydrocarbon solvents, chlorinated hydrocarbons, esters, or oxidizing agents will hasten deterioration.

Check rubber articles regularly. Replace them when any of the following signs of deterioration appear, swelling, tackiness, or cracking.

Conductive rubber goods loose their electrical conductivity with age.

To extend the useful life of rubber articles:

• Remove metal connectors immediately after use.

Monitor

• Store rubber articles in the dark away from ozone sources (florescent light fixtures, electric

motors, and diathermy machines).

WARNINGWARNING

WARNING Do not use talc, zinc stearate, calcium carbonate, corn starch or similar substances

WARNINGWARNING

to prevent tackiness on rubber articles. Any substances used could contaminate or irritate the patient’s respiratory tract.

sensor maintenance sensor maintenance

sensor maintenance

sensor maintenance sensor maintenance

Installing a cartridge or disassembling the O2 sensor for cleaning

WARNINGWARNING

WARNING Use protective gloves and eyewear when you open the O2 sensor in case the cartridge

WARNINGWARNING

is leaking. The sensor cartridge contains an electrolyte (caustic).

After servicing the O2 sensor, complete the checkout procedure “5125 O2 Monitor checks” at the end of chapter 4.

5-3

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5-3

5/Maintenance

Note: The oxygen sensor cartridge is located inside the sensor housing. Handle the sensor cartridge with care to avoid damage.

Figure 5-1

Hold the sensor housing, and depress the locking latch using a tool.

MD.12.015

Figure 5-2

Twist to open, and unscrew the top half of the sensor housing. Lift the old sensor out.

MD.12.016

MD.02.032

5-4

Figure 5-3

Install the new sensor cartridge with the circular contacts toward the rear of the sensor housing. Verify that the top half of the housing is unobstructed to ensure proper flow.

1001-0809-000 11/20/99

5-4

5/Maintenance

Figure 5-4

Twist to close, and tighten the housing to form a gas-tight seal.

MD.12.017

10 mV per

Min R

20M

MD12.019

Figure 5-5

If necessary, immediately connect the O2 sensor to the 5125 O2 Monitor.

WARNINGWARNING

WARNING Perform the 5125 O2 Monitor Checks in chapter 4 after replacing the sensor cartridge

WARNINGWARNING

to ensure the monitor is working properly. Allow at least 5 minutes for the sensor to stabilize.

5-5

1001-0809-000 11/20/99

5-5

5/Maintenance

Cleaning and sterilization

WARNINGSWARNINGS

WARNINGS Use protective gloves and eyewear when you open the O2 sensor in case the cartridge

WARNINGSWARNINGS

is leaking. The sensor cartridge contains potassium acetate (caustic).

w Do not inhale any fumes generated by the oxygen sensor cleaning procedure. Such

fumes can cause respiratory system or skin damage. The sensor cartridge contains potassium acetate (caustic).

MD.12.018

MD.07.009

5125

A C

Figure 5-6

Cleaning and sterilization methods

Use the following methods to clean and sterilize the parts as labeled in Figure 5-6. Method A: Wipe with damp cloth (liquid disinfectant, mild detergent solution, isopropyl alcohol);

do not immerse, autoclave or gas sterilize; remove leaked electrolyte under a fume hood with vinegar.

Method B: Gas sterilize with ethylene oxide or clean with liquid disinfectant, mild detergent solution, isopropyl alcohol.

CAUTIONCAUTION

CAUTION Following ethylene oxide sterilization, quarantine the items in a well ventilated area

CAUTIONCAUTION

MD.02.032

to allow dissipation of absorbed ethylene oxide gas. Follow the sterilizer manufacturer’s recommendations for specific sterilization periods.

5-6

Method C: Wipe with damp cloth (water, white vinegar, liquid disinfectant).

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5-6

5/Maintenance

Replacing the 5125 O2 Monitor battery

WARNINGWARNING

WARNING Use only the specified Datex-Ohmeda, non-magnetic batteries. Standard batteries

WARNINGWARNING

are magnetic and can cause injuries if used in an MRI environment. Refer to the “Illustrated Parts” section for Stock Numbers.

The 5125 O2 Monitor uses a non-magnetic, 3.9 Vdc lithium battery. The O2 monitor batteries are not rechargeable.

The battery compartment is located behind the front cover. Remove the two corner screws and open the cover to gain access to the battery.

After replacing the battery, complete the checkout procedure “5125 O chapter 4.

Monitor checks” at the end of

5-7

1. Battery

Figure 5-7

Replacing the battery

1001-0809-000 11/20/99

MD.12.014

5-7

Notes

5/Maintenance

5-8

1001-0809-000 11/20/99

5-8

6/Troubleshooting

In this sectionIn this section

In this section

In this sectionIn this section

Repair policy 6-1

Repair policyRepair policy

Repair policy

Repair policyRepair policy

CAUTIONCAUTION

CAUTION No repair should ever be attempted by anyone not having experience in the repair of

CAUTIONCAUTION

Problems with the 5125 O

Calibration and drift 6-1

5125 O

Pneumatics problems 6-3

Do not use malfunctioning equipment. Make all necessary repairs, or have the equipment serviced by an Authorized Datex-Ohmeda Service Representative. After repair, test the equipment to ensure that it is functioning properly, in accordance with the manufacturer’s published specifications.

To ensure full reliability, have all repairs and service done by an Authorized Datex-Ohmeda Service Representative. If this cannot be done, replacement and maintenance of those parts listed in this manual may be undertaken by a competent, trained individual having experience in the repair of devices of this nature.

devices of this nature.

Monitor alarms 6-2

Monitor 6-1

Replace damaged parts with components manufactured or sold by Datex-Ohmeda. Then test the unit to ascertain that it complies with the manufacturer’s published specifications.

Contact the nearest Datex-Ohmeda Service Center for service assistance. In all cases, other than where Datex-Ohmeda’s warranty is applicable, repairs will be made at Datex-Ohmeda’s current list price for the replacement part(s) plus a reasonable labor charge.

Problems with the 5125 OProblems with the 5125 O

Problems with the 5125 O

Problems with the 5125 OProblems with the 5125 O

Calibration and drift

Cannot calibrate monitorCannot calibrate monitor

Cannot calibrate monitor

Cannot calibrate monitorCannot calibrate monitor

Replace the O

Drift in ODrift in O

Drift in O

Drift in ODrift in O

Monitor O

sensor cartridge. Refer to “O2 sensor maintenance,” in Chapter 5.

readings readings

readings

readings readings

readings. If O2 readings fail to stabilize, replace the sensor cartridge.

Monitor Monitor

Monitor

Monitor Monitor

6-1 1001-0809-000 11/20/99

6-1

6/Troubleshooting

5125 O2 Monitor alarms

Note: When one message covers multiple conditions, the distinguishing feature is highlighted.

HIGH O2HIGH O2

HIGH O2

HIGH O2HIGH O2

O2 Display Shows: O2 concentration Alarm LED: Flashing Yellow Alarm Silence: Until next occurrence

Measured O

concentration is above the alarm limit. Set the alarm limit to “00” to disable high O

monitoring.

LOW BATTLOW BATT

LOW BATT

LOW BATTLOW BATT (two alarms)(two alarms)

(two alarms)

(two alarms)(two alarms)

Display Shows: — blank — Display Shows: — blank —

Display Shows: — blank —

Display Shows: — blank — Display Shows: — blank —

Alarm LED: Flashing Yellow Alarm Tone: Intermittent

Immediate battery replacement required.

Display Shows: O Display Shows: O

Display Shows: O

Display Shows: O Display Shows: O

concentration concentration

concentration

concentration concentration

Alarm LED: Continuous Yellow Alarm Tone: Three Beep Sequence

Battery is weak. Replace the battery before starting the case.

LOW OLOW O

LOW O

LOW OLOW O

Display Shows: Oxygen concentration Display Shows: Oxygen concentration

Display Shows: Oxygen concentration

Display Shows: Oxygen concentration Display Shows: Oxygen concentration

Alarm LED: Flashing Red Alarm Silence: 30 seconds

Measured oxygen concentration is below the alarm limit.

——

none none

—

none

——

none none

(three alarms)(three alarms)

(three alarms)

(three alarms)(three alarms)

Display Shows: Oxygen concentration Display Shows: Oxygen concentration

Display Shows: Oxygen concentration

Display Shows: Oxygen concentration Display Shows: Oxygen concentration

——

—

——

Alarm LED: Continuous Yellow Alarm Tone: Three Beep Sequence

The low O

Display Shows: 00 Display Shows: 00

Display Shows: 00

Display Shows: 00 Display Shows: 00

alarm limit is set at or below 18%. This is not allowed. Set a higher low O2 alarm limit.

Alarm LED: Flashing Yellow Alarm Tone: Intermittent

sensor is disconnected or has malfunctioned. If the sensor is connected, flex the cable to

The O

check for broken wires. If the cable appears to be intact, replace the sensor cartridge. If the problem persists, contact qualified service personnel.

Display Shows: — blank — Display Shows: — blank —

Display Shows: — blank —

Display Shows: — blank — Display Shows: — blank —

Alarm LED: Continuous Yellow Alarm Tone: Continuous

Internal monitor malfunction. Contact qualified service personnel.

6-2 1001-0809-000 11/20/99

6-2

6/Troubleshooting

Alarm summary table

Message Display Alarm LED Alarm Tone Condition

LOW O2LOW O2

LOW O2 O

LOW O2LOW O2

HIGH O2HIGH O2

HIGH O2 O

HIGH O2HIGH O2

— none — O2% Continuous Three Beep Low O2 limit

LOW BATTLOW BATT

LOW BATT O

LOW BATTLOW BATT

LOW BATT —blank— Flashing Intermittent Dead Battery

LOW BATTLOW BATT

— none — 00 Flashing Intermittent O2 sensor

— none — —blank— Continuous Continuous Monitor Malfunction

% Flashing Alternating O2% < low limit

% Flashing Intermittent O2% > high limit

% Continuous Three Beep Weak Battery

Red Pitch or 18%

Yellow Tone

Yellow Sequence <18%

Yellow Sequence

Yellow Tone

Yellow Tone disconnection or

Yellow

Alarm

malfunction

Pneumatics problemsPneumatics problems

Pneumatics problems

Pneumatics problemsPneumatics problems

Low pressure leak test fails when vaporizer “On”Low pressure leak test fails when vaporizer “On”

Low pressure leak test fails when vaporizer “On”

Low pressure leak test fails when vaporizer “On”Low pressure leak test fails when vaporizer “On”

Check for correct vaporizer mounting. Tighten the vaporizer fill caps.

Make sure that there are external o-rings on all vaporizer manifold ports. Replace missing or damaged o-rings.

If the leak continues, move the vaporizer to another port. If the leak follows the vaporizer, use a different vaporizer. Do not use the leaking vaporizer until it has been serviced. If the leak stays with the port, i.e. any vaporizer put on that port leaks and the external o-rings are installed, contact qualified service personnel to repair the vaporizer manifold.

High pressure leak or inadequate ventilator gas supplyHigh pressure leak or inadequate ventilator gas supply

High pressure leak or inadequate ventilator gas supply

High pressure leak or inadequate ventilator gas supplyHigh pressure leak or inadequate ventilator gas supply

Make sure that the gas cylinder is correctly aligned and the tee handle is tight. Check that there is only one cylinder gasket and it is in good condition. Check external hose connections to the O power outlet.

High pressure leak at gas blockHigh pressure leak at gas block

High pressure leak at gas block

High pressure leak at gas blockHigh pressure leak at gas block

Make sure that the cylinder is correctly aligned and the tee handle is tight. Install yoke plugs as required. Check that there is only one cylinder gasket and it is in good condition.

alarm (pneumatic) alarm (pneumatic)

Low OLow O

alarm (pneumatic)

Low O

alarm (pneumatic) alarm (pneumatic)

Low OLow O

This alarm sounds briefly when the Excel is first switched “On.”

If it occurs during operation, check the gas supply pressure (cylinder or pipeline). If necessary, switch to a reserve cylinder.

6-3 1001-0809-000 11/20/99

6-3

6/Troubleshooting

Notes

6-4 1001-0809-000 11/20/99

6-4

7/Illustrated Parts

In this sectionIn this section

In this section

In this sectionIn this section

Excel specific parts 7-1

MRI Compatible accessories 7-1

5125 O

Where to find additional part numbers 7-2

This manual lists only customer replaceable parts used directly by the Excel or the 5125 O Monitor. To locate additional part information find the part description in the section titled “Where to find additional part numbers.”

Excel specific partsExcel specific parts

Excel specific parts

Excel specific partsExcel specific parts

1102-3016-000 Vaporizer port o-rings, external (six)

0236-0042-801 Fresh gas hose

0219-3372-600 Yoke tee handle

0206-7129-525 Yoke plug

0210-5022-300 Cylinder gasket

0219-7210-300 Test lung

1001-3854-000 Krytox

0309-1318-800 Low pressure leak test device

Monitor accessories 7-2

2900-0001-000 Test plugs, bag port

0216-6764-870 GMS Mounting Pin (older style)

Included with Absorber GMS Mounting Pin (New style)

MRI compatible accessoriesMRI compatible accessories

MRI compatible accessories

MRI compatible accessoriesMRI compatible accessories

WARNINGWARNING

WARNING The MRI compatibility of these accessories applies to specific accessory models and

WARNINGWARNING

is limited to use as part of the Excel MRI System. None of these accessories have been tested for stand alone use in an MRI environment or in magnetic fringe fields above 0.23 Tesla (2300 Gauss).

1001-8968-000 Add on cylinder, O2 DISS

1001-8970-000 Add on cylinder, N

1603-3000-000 Respirometer 121 style

1010-8015-000 Suction regulator kit

1010-8016-000 Free flow suction regulator kit

1010-8021-000 Bracket for suction regulator

1010-8017-000 Auxiliary O

flowmeter

O DISS

7-1 1001-0809-000 11/20/99

7-1

7/Illustrated Parts

1001-8930-000 Flip-up shelf

0216-6819-800 1” x 3.5” Post dovetail mount

0216-6814-800 12” IV Pole Dovetail mount

1001-8957-000 Large Tycos Case Dovetail mount

0211-1100-300 BP adult inflation system Tycos

0207-8022-801 Bag to ventilator switch valve

5125 O5125 O

5125 O

5125 O5125 O

Where to find additional part numbersWhere to find additional part numbers

Where to find additional part numbers

Where to find additional part numbersWhere to find additional part numbers

Monitor accessories Monitor accessories

Monitor accessories

Monitor accessories Monitor accessories

1001-3741-000 Non-magnetic lithium 3.9 Vdc C size battery

0237-2034-700 O

6050-0005-406 O

6050-0005-438 O

0210-0499-300 O-ring small

0212-0763-100 Sensor adapter

System operation and maintenance manualsSystem operation and maintenance manuals

System operation and maintenance manuals

System operation and maintenance manualsSystem operation and maintenance manuals

All major system components have individual operation and maintenance manuals:

• GMS Absorber 0178-1742-000

• GMS Bain Circuit Adapter 0178-1752-000

sensor cartridge

sensor (without cartridge)

sensor front housing w/ o-ring

• GMS PEEP Valve 0178-1753-000

• Tec 4 Vaporizer 0205-7106-300

• Tec 5 Vaporizer 1105-0100-000

• Waste Gas Scavenging Valve 0178-1728-000

Parts listed in the GMS Absorber Operation and Maintenance ManualParts listed in the GMS Absorber Operation and Maintenance Manual

Parts listed in the GMS Absorber Operation and Maintenance Manual

Parts listed in the GMS Absorber Operation and Maintenance ManualParts listed in the GMS Absorber Operation and Maintenance Manual

Look the following parts up in the GMS Absorber Operation and Maintenance Manual:

• Unidirectional (inspiratory and expiratory) check valve components

• Pressure gauge and inspiratory pressure sensing tee

• Drain plug

• O-rings

• Canister gaskets, screens, hose connections and seals

7-2 1001-0809-000 11/20/99

7-2

Appendix

In this sectionIn this section

In this section

In this sectionIn this section

Excel Pneumatics A-1

Excel MRI System Specifications A-4

Excel MRI PneumaticsExcel MRI Pneumatics

Excel MRI Pneumatics

Excel MRI PneumaticsExcel MRI Pneumatics

The Excel Gas Machine consists of the gas supply modules, the flow tubes and controls responsible for gas concentration, the vaporizer assemblies, and specialized alarm and “On” /“Off” functions provided by the oxygen supply. Most of the pneumatic circuitry is located underneath the tabletop.

The Excel MRI comes with gas supply modules for nitrous oxide, oxygen, and air.

Gas supply modules contain two parallel branches, pipeline and cylinder. The pipeline supply branch consists of a filtered pipeline connection and a pipeline pressure gauge. The cylinder branch consists of a filtered cylinder connection, a cylinder gauge, and a high pressure gas regulator that reduces cylinder pressure to a nominal 311 kPa (45 psig). When only one source is connected or switched “On,” check valves keep gas from leaking out through the unused branch. When both pipeline and cylinder supplies are connected, make sure that the cylinder valve is closed. Otherwise, cylinder gas could be depleted since the pipeline pressure is almost the same as the regulated cylinder pressure. A pressure relief valve in each gas supply module limits maximum pressure to 518 kPa (75 psig).

Shut-off valves control the flow of the nitrous oxide and the air. When the system master switch is set to “Off,” these valves are closed. When the system master switch is set to “On,” the pilot oxygen pressure holds them open. As long as the pilot pressure remains above the critical level, approximately 138 kPa (20 psig), the valves remain open. If the oxygen pilot pressure drops below this level, the shut-off valves close, stopping the flow of nitrous oxide and the air. You should notice the pilot oxygen flow through the oxygen flow tube whenever the system master switch is “On,” even if the oxygen flow control is turned completely clockwise (minimum flow).

Secondary regulators reduce the oxygen and nitrous oxide pressures to the levels required by the flow controls. The air goes directly from the primary regulator to the flow control. A gear linkage on the nitrous oxide and oxygen flow control knobs helps limit the lowest O nominal 25% of the N flows.

The mixed gas output of the flowmeter assembly goes through the selected vaporizer and into the patient circuit. A pressure relief valve on the common gas outlet limits pressure to approximately

27.6 to 38 kPa (4 to 5.5 psig) at 200 ml/min.

Pressing the “Flush” button connects pipeline or regulated cylinder oxygen directly to the gas machine outlet regardless of the position of the system master switch.

The same pilot pressure that opens the shut-off valves pressurizes the alarm canister. A regulator keeps the oxygen in the canister as long as supply pressure exceeds approximately 207 kPa (30 psig); range: 186 to 228 kPa (27 to 33 psig). If the oxygen supply pressure falls below this level, gas exits the canister through a reed alarm.

O flow control setting. A system of mechanical stops sets the maximum

flow control setting to a

A-1

1001-0809-000 11/20/99

A-1

Appendix

Air 11

N2O 11

10 10

Ohmeda Link 25

GSM N2O

GSM Air

PL CYL

1111

333

GSM N2O GSM O

PL CYL

4a 4a

PL CYL

2a2a

CGO

2c 2b

A-2

Figure A-1

Typical Excel pneumatic circuitry

1001-0809-000 11/20/99

AA.11.213

A-2

Appendix

Key to Subassembly AbbreviationsKey to Subassembly Abbreviations

Key to Subassembly Abbreviations

Key to Subassembly AbbreviationsKey to Subassembly Abbreviations

CGO Common Gas Outlet

CYL Cylindery Yoke

GSM Gas Supply Module (O2, N2O, Air)

FM Flowmeter

PA Pneumatic Alarm (triggers betwen 186 and 228 kPa [27 and 33 psig])

PL Pipeline Connection (nominal 345 kPa [50 psig])

PO Power Outlet (O2 for ventilator Drive gas)

VM Vaporizer Manifold

Key to Numbered ComponentsKey to Numbered Components

Key to Numbered Components

Key to Numbered ComponentsKey to Numbered Components

1. Pipeline Pressure Gauge

2. Regulators

a. Primary Regulator b. Alarm Regulator (set threshold) c. Flow Regulator (alarm duration) d. Secondary Regulators (262 ± 3.5 kPa for N

psig for N

3. Cylinder Pressure Gauge

4. Pressure Relief Valves

a. 517 kPa (75 psig) b. 27.6 to 38 kPa (4 to 5.5 psig) at 200 ml/min

5. Switches

a. System Master Switch b. Vaporizer Selector Switch

6. Alarm Reservoir

7. Whistle

8. Shut-Off Valve

9. Secondary Regulator Test Points

10. Flow Control Needle Valves

(maximum flows: 10-14 1/min O (minimum flows: 180 to 220 mil O

11. Flowtube Assembly

12 Anesthesia Vaporizer

13. Flush Button/Valve

O; 20.75 ± 3.75 psig for O2 at 2 l/min])

O; 143 ± 26 kPa for O2 at 2 l/min [38 ± 0.5

; N2O 10-12 l/min; Air 15-17 1/min.)

; 0 ml all other gases)

Key to Unnumbered SymbolsKey to Unnumbered Symbols

Key to Unnumbered Symbols

Key to Unnumbered SymbolsKey to Unnumbered Symbols

Filter

Check Valve

Gas Circuit Fitting

Gas Circuit Connection

AA.19.041

A-3

Direction of Gas Flow

1001-0809-000 11/20/99

A-3

Appendix

Excel MRI System SpecificationsExcel MRI System Specifications

Excel MRI System Specifications

Excel MRI System SpecificationsExcel MRI System Specifications

Note: All specifications are nominal and subject to change without notice.

Dimensions

Weight:Weight:

Weight:

Weight:Weight: Excel 210: 93.5 kg (206 lbs)

Options: Vaporizer, 17.6 kg (17 lbs); Absorber; 9.6 kg (21 lbs)

Dimensions:Dimensions:

Dimensions:

Dimensions:Dimensions: Height: 168 cm (66 in) floor to upper most part of top shelf.

Depth: 76 cm (30 in) with casters and brake bar. Width: 73.6 cm (29 in)

Shelves and drawers:Shelves and drawers:

Shelves and drawers:

Shelves and drawers:Shelves and drawers:

Middle Shelf:

Size: 29 x 31 cm (11.4 x 12.4 in) Height: 19.8 cm (7.8 in) Maximum Load: 11 kg (24 lb)

Top Shelf:

Size: 59.7 x 36 cm (23.5 x 14.2 in) Maximum Load: 23 kg (50 lb)

Table-Top:

Height (above floor): 84 cm (33.5 in) Size: 55.0 x 29.0 cm (21.7 x 11.7 in)

Drawer Cabinet (option):

Contains two 39.4 x 26.7 x 10.2 cm (15.5 x 10.5 x 4 in) drawers.

Absorber post mounting assembly:Absorber post mounting assembly:

Absorber post mounting assembly:

Absorber post mounting assembly:Absorber post mounting assembly: Absorber Arm Length (varies slightly with arm style): 35.5 cm (14 in)

Vertical Adj (above floor): 25.4 to 66 cm (10 to 26 in) Horizontal Adj: 16.5 to 27.9 cm (6.5 to 11 in)

Casters:Casters:

Casters:

Casters:Casters:

12.7 cm (5 in) diameter; front casters have a foot-operated brake-bar lock.

Common gas outlet:Common gas outlet:

Common gas outlet:

Common gas outlet:Common gas outlet: Equipped with a latching, positive engagement, bayonet type connector. The common gas outlet

connector will also accept standard 22 mm OD or 15 mm ID conical friction fit connectors.

Pneumatics

A-4

Pipeline input:Pipeline input:

Pipeline input:

Pipeline input:Pipeline input: 345 kPa (50 psig) pipeline supply required

DISS indexed connections for O Pipeline filter and check valve

1001-0809-000 11/20/99

, N2O and air

A-4

Appendix

Cylinder input:Cylinder input:

Cylinder input:

Cylinder input:Cylinder input: CGA pin indexed yokes

Input filter and check valve Primary regulator output: nominal 310 kPa (45 psig) Primary regulator diaphragm min burst pressure: 1,750 kPa (250 psig)

Maximum output:Maximum output:

Maximum output:

Maximum output:Maximum output: Pressure relief valve set to: 517.5 kPa (75 psig)

Shut-off valves:Shut-off valves:

Shut-off valves:

Shut-off valves:Shut-off valves: Shut-off valves stop all other gas flows if oxygen supply pressure falls to approximately 138 kPa

(20 psig ).

Flowmeter module:Flowmeter module:

Flowmeter module:

Flowmeter module:Flowmeter module: Flow ranges:

Double Tube 0.2-0.95 l/min and 1.0 l/min-10 l/min.

Minimum O

O Double Tube 0.04-0.9 l/min and 1.0 l/min-10 l/min.

flow 200 ml/min.

Air Single Tube 1-15 l/min.

Flowtube assembly calibration:Flowtube assembly calibration:

Flowtube assembly calibration:

Flowtube assembly calibration:Flowtube assembly calibration: Percent of FlowPercent of Flow

Percent of Flow

Percent of FlowPercent of Flow (Full Scale)(Full Scale)

(Full Scale)

(Full Scale)(Full Scale)

AccuracyAccuracy

Accuracy

AccuracyAccuracy (% of Reading)(% of Reading)

(% of Reading)

(% of Reading)(% of Reading)

100 ±1.60%

90 ±1.64% 80 ±1.70% 70 ±1.77% 60 ±1.86% 50 ±2.00% 40 ±2.20% 30 ±2.53% 20 ±3.20% 10 ±5.20%

Note: Flowtube assemblies are calibrated at 20°C (68°F) and 101.3 kPa (760 mm Hg). Different breathing circuit pressures, barometric pressures or temperatures will affect flowtube accuracy. In some cases, deviations due to different conditions may exceed the specified tolerances.

Common gas outlet relief valve:Common gas outlet relief valve:

Common gas outlet relief valve:

Common gas outlet relief valve:Common gas outlet relief valve:

27.6 to 38 kPa (4.0 to 5.5 psig) at minimum flow.

pressure alarm: pressure alarm:

Low OLow O

pressure alarm:

Low O

pressure alarm: pressure alarm:

Low OLow O

An alarm sounds for at least seven seconds if the O

supply falls below approximately 207 kPa

(30 psig); range: 186 to 228 kPa (27 to 33 psig).

A-5

Oxygen flush button:Oxygen flush button:

Oxygen flush button:

Oxygen flush button:Oxygen flush button: Recessed, self-closing push button provides a flow of 45-70 l/min when fully depressed.

1001-0809-000 11/20/99

A-5

Appendix

5125 O2 Monitor specifications

Range:Range:

Range:

Range:Range: 0-100% O Display resolution:Display resolution:

Display resolution:

Display resolution:Display resolution:

1% Display update:Display update:

Display update:

Display update:Display update: Three times per second Alarms:Alarms:

Alarms:

Alarms:Alarms: Audible and visual alarms for: high and low O

, low battery, sensor malfunction or disconnection,

internal malfunction. Response time:Response time:

Response time:

Response time:Response time: Typically 20 seconds for 90% of total change in O Drift range:Drift range:

Drift range:

Drift range:Drift range: ±1% in eight hours Linearity:Linearity:

Linearity:

Linearity:Linearity: ±1% of full scale Accuracy:Accuracy:

Accuracy:

Accuracy:Accuracy: ±3% of full scale Sensor cartridge life:Sensor cartridge life:

Sensor cartridge life:

Sensor cartridge life:Sensor cartridge life:

concentration at 25°C (77°F).

One year at 50% O Exposure to high CO Battery:Battery:

Battery:

Battery:Battery:

; six months at 100% O2 at 25°C (77°F)

concentrations or elevated temperatures will shorten sensor life.

Non-magnetic, 3.9 Vdc lithium battery Nominal battery life expectancy is 600 hours. Self tests:Self tests:

Self tests:

Self tests:Self tests: Manual (test switch) and automatic Remote connection:Remote connection:

Remote connection:

Remote connection:Remote connection: PinPin

PinPin

SignalSignal

Signal

SignalSignal

1 Analog ground 2 Shield 3 & 4 Normally open switch connection for remote alarm silence.

High to low transition silences alarm.

5% O

; 10 mv = 1% O2 at 10 KΩ load impedance

6 Alarm status:

high (>4.5 Vdc) = normal, no alarm; 10 msec pulse = alarm in progress; number of pulses in 320 msec specifies the highest priority alarm (1 = low O 2 = high O 4 = dead battery; 5 = low O

; 3 = sensor malfunction/disconnection;

limit <18%; 6 = weak battery)

alarm line stays low for remainder of 320 msec.

;

A-6

1001-0809-000 11/20/99

A-6

Warranty

Appendix

This Product is sold by Datex-Ohmeda under the warranties set forth in the following paragraphs. Such warranties are extended only with respect to the purchase of this Product directly from Datex-Ohmeda or Datex-Ohmeda’s Authorized Dealers as new merchandise and are extended to the Buyer thereof, other than for the purpose of resale.

For a period of twelve (12) months from the date of original delivery to Buyer or to Buyer’s order, but in no event for a period of more than two years from the date of original delivery by DatexOhmeda to a Datex-Ohmeda Authorized Dealer, this Product, other than its expendable parts, is warranted against functional defects in materials and workmanship and to conform to the description of the Product contained in this operation manual and accompanying labels and/or inserts, provided that the same is properly operated under the conditions of normal use, that regular periodic maintenance and service is performed and that replacements and repairs are made in accordance with the instructions provided. This same warranty is made for a period of thirty (30) days with respect to expendable parts. The foregoing warranties shall not apply if the Product has been repaired other than by Datex-Ohmeda or in accordance with written instructions provided by Datex-Ohmeda, or altered by anyone other than Datex-Ohmeda, or if the Product has been subject to abuse, misuse, negligence, or accident.

Datex-Ohmeda’s sole and exclusive obligation and Buyer’s sole and exclusive remedy under the above warranties is limited to repairing or replacing, free of charge, at Datex-Ohmeda’s option, a Product, which is telephonically reported to the nearest Datex-Ohmeda Field Service Support Center and which, if so advised by Datex-Ohmeda, is thereafter returned with a statement of the observed deficiency, not later than seven (7) days after the expiration date of the applicable warranty, to the Datex-Ohmeda Service and Distribution Center during normal business hours, transportation charges prepaid, and which, upon Datex-Ohmeda’s examination, is found not to conform with above warranties. Datex-Ohmeda

including but not limited to incidental damages, consequential damages, or special damages.

shall not be otherwise liable for any damages

There are no express or implied warranties which extend beyond the warranties hereinabove set

Datex-Ohmeda

forth. respect to the product or parts thereof.

makes no warranty of merchantability or fitness for a particular purpose with

A-7

1001-0809-000 11/20/99

W-1

A-7

Corporate Office

Datex-Ohmeda Division Instrumentarium Corp. PO Box 900 FIN-00031 Helsinki Finland Tel 358 10 394 11 Fax 358 9 146 3310

North America

United States

Customer Service, Technical Support and Distribution Center

Datex-Ohmeda, Inc. PO Box 7550 Madison, WI 53707-7550, USA Tel 1 800 345 2700 Fax 1 608 221 4384

Equipment Service Center

Datex-Ohmeda, Inc. 1315 West Century Drive Louisville, CO 80027-9560, USA Tel 1 800 345 2755

Canada

Datex-Ohmeda (Canada) Inc. 1093 Meyerside Drive, Unit 2 Mississauga, Ontario L5T 1J6 Canada Tel 1 800 268 1472 Tel 1 905 565 8572 Fax 1 905 565 8592

Asia/Pacific

China

Datex-Ohmeda Pte. Ltd. Room B416, COFCO Plaza 8 Jianguomennei Avenue Beijing 100005, PR China Tel 86 10 6526 9773 Fax 86 10 6526 0653

Datex-Ohmeda Pte. Ltd. Room 1708, Yunlong Mansion No. 122 Luoguo Street Chengdu 610017, PR China Tel 86 28 661 4424 Fax 86 28 676 2703

Datex-Ohmeda Pte. Ltd. 403 Huan Shi Dong Road Room 1602, GIE Tower Guangzhou, 510095, P R China Tel 86 20 8732 2521 Fax 86 20 8732 2518

Datex-Ohmeda Pte. Ltd. Room 2509 Lippo Plaza No. 222 Huaihai Road (M) Shanghai 200021, P.R. China Tel 8621 5382 5657 Fax 8621 5382 1691

Datex-Ohmeda Pte. Ltd. Room 809, Truroll Plaza Wusheng Road Wuhan 430033, P R China Tel 86 27 8571 2536 Fax 86 27 8571 2655

India

Datex-Ohmeda (India) Pvt. Ltd. Block EP & GP, Sector V Plot XI-16, Salt Lake City Calcutta 700091 India Tel 91 33 3574002 Fax 91 33 3574001

Indonesia

Datex-Ohmeda Pte. Ltd. Wisma Danamon Aetna Life 19th Floor Jln. Jend Sudirman Kav. 45-46 Jakarta 12930, Indonesia Tel 62 21 575 0864 Fax 62 21 575 0865

Japan

Datex-Ohmeda K. K. TRC Annex 9F 6-1-1 Heiwajima Ohta-ku, Tokyo 143-0006 Japan Tel 81 3 5763 6801 Fax 81 3 5763 6838

Datex-Ohmeda K. K. Technical Center TRC A Bldg. AE 4-8 6-1-1 Heiwajima Ohta-ku, Tokyo 143-0006 Japan Tel 81 3 5763 6850 Fax 81 3 5763 6852

Korea

Datex-Ohmeda Pte. Ltd. 10th Floor, Sam Sung Building 36 - 1, Yoido-Dong, Youngdeungpo-Ku Seoul, Korea Tel 82 2 786 7421 Fax 82 2 786 7420

Malaysia

Datex-Ohmeda Pte. Ltd. Level 2 Bangunan O'Connor 13 Jalan 223 46100 Petaling Jaya Selangor, West Malaysia Tel 60 3 754 7872 Fax 60 3 757 6948

Singapore

Datex-Ohmeda Pte. Ltd. 152 Beach Road #12-05/07 Gateway East Singapore 189721 Tel 65 391 8618 Fax 65 291 6618

Thailand

Datex-Ohmeda Pte. Ltd. 12th Floor (Unit F) Grand Amarin Tower 1550 New Petchburi Road, Makasan, Rajathevi, Bangkok 10320, Thailand Tel 66 2 2071012/13 Fax 66 2 207 1014

Taiwan and Philippines

Datex-Ohmeda Pte. Ltd. 2nd Floor, No. 85, Chien-Kuo North Road, Sec. 2 Taipei, Taiwan Republic of China Tel 886-2 2515-0457 Fax 886-2 2501-9136

Vietnam

Datex-Ohmeda Pte. Ltd. 522G Nguyen Tri Phuong St. Ho Chi Minh City, Dist. 10 Vietnam Tel 848 865 5875 Fax 848 862 5501

Australia

Datex-Ohmeda Pty. Ltd. Units 1 & 2 149 Arthur Street P O Box 356 Homebush NSW 2140 Australia Tel 61 132 229 Fax 61 297 461796

Europe

France

Datex-Ohmeda S.A.S. Parc de Pissaloup, BP 10 8 Avenue Jean d’Alembert F-78191 Trappes-Cédex France Tel 33 1 30 68 60 00 Fax 33 1 30 68 60 01

Datex-Ohmeda S.A.S. 17 rue Jean-Elysée Dupuy F-69410 Champagne Au Mont d'Or France Tel 33 1 30 68 60 00 Fax 33 4 78 43 26 58

Germany

Datex-Ohmeda GmbH Dr-Alfred-Herrhausen-Allee 24 D-47228 Duisburg Germany Tel 49 2065 691-0 Fax 49 2065 691-236

Italy

Datex-Ohmeda S.p.A. Via Cassanese 100 20090 Segrate, Milan Italy Tel 39 2 21693431 Fax 39 2 26926226

Netherlands

Datex-Ohmeda B.V. Kantemarsweg 18 Post Box 22 3870 CA Hoevelaken Netherlands Tel 31 33 253 5404 Fax 31 33 253 7223

Spain

Datex-Ohmeda S.L. C/Manuel Tovar 26 28034 Madrid Spain Tel 34 1 334 26 00 Fax 34 1 358 12 84

United Kingdom

Datex-Ohmeda Ltd. Ohmeda House 71 Great North Road Hatfield Hertfordshire AL9 5EN England Tel 44 1707 263570 Fax 44 1707 260191

Latin America, Caribbean

Datex-Ohmeda Latin America 10685 North Kendall Drive Miami, FL 33176, USA Tel 1 305 273 9940 Fax 1 305 273 4382

Middle East

Datex-Ohmeda Middle East Operations P O Box 5527 Dubai, United Arab Emirates Tel 97 14 822653 Fax 97 14 822659

Datex-Ohmeda, Inc. Ohmeda Drive PO Box 7550 Madison WI 53707-7550 USA Tel 1 608 221 1551 Fax 1 608 222 9147 www.datex-ohmeda.com

Datex-Ohmeda Ohmeda Excel 210 User manual

Specifications and Main Features

Frequently Asked Questions

User Manual