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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS Technical Service Manual Part Number: 4114210 Rev: T Date: 4 May 2004 © 2004 Draeger Medical, Inc. Narkomed MRI Narkomed MRI-2 Anesthesia Systems…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS Narkomed MRI Service Manual Table of Contents What’s New in Rev. T DESCRIPTION PAGE SECTION 1: Introduction 1.1 Recommendations……….

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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS CONTENTS (continued) NM MRI DESCRIPTION PAGE 4.18 Battery …………4-53 4.19 Power Supply PCB .

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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI CONTENTS (continued) DESCRIPTION PAGE 6.20 Oxygen Concentration Test ……..6-25 6.21 Oxygen Ratio Control (ORC) Test .
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS Narkomed MRI Anesthesia System VENTILATOR MAIN SWITCH PANEL FLOWMETER BANK MONITOR VAPORIZER VENTILATOR BELLOWS PRESSURE GAUGES SCAVENGER (OPEN RESERVOIR) ABSORBER SV00070 POWER SUPPLY Rev. E…
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  The PMS PROCEDURE in Section 6 must also be performed after any component has been replaced. The general arrangement of the Narkomed MRI Anesthesia System is shown on the opposite page. WARNINGS are used in this manual before procedures which if not performed correctly could result in personal injury.
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  WARNING: Do not place any object on this machine unless it is specifically labeled to be used in an MRI scanning room and on the Narkomed MRI anesthesia system. Objects placed on this machine that are not designed for use with this anesthesia system may be strongly attracted to the magnet and may cause serious injury or death when the machine is used in an MRI scanning room.
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  CAUTION: The Narkomed MRI is designed for MRI use only as a system. The user should not assume that individual components of the system can be safely used with MRI scanners.
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  IRM, ou de blessure corporelle. AVERTISSEMENT: Cet appareil d’anesthésie Narkomed MRI a été vérifiée avec des aimants possédant des champs magnétiques jusqu’á 1,5 tesla. Installé l’appareil prés d’un aimant plus puissant (plus de 1,5 tesla) pourrait amener l’appareil á…
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  être utilisé seul pour l’IRM sans présenter de risques. ATTENTION: Bien que l’appareil d’anesthésie Narkomed MRI soit conçu de manière à minimiser le parasitage électromagnétique, son fonctionnement peut être affecté par l’utilisation de générateurs d’électrochirurgie ou d’appareils de diathermie à…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI INTRODUCTION (continued) Copyright Copyright © 2004 by Draeger Medical, Inc. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, or stored in a retrieval system in any form or by any means, electronic or mechanical, including photocopying and recording, without the written permission of Draeger Medical, Inc.
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  DIAGNOSTICS 2.0 DIAGNOSTICS The Narkomed MRI anesthesia system includes a volume, pressure, and oxygen monitor. If your system is equipped with an Omicron (Core-M) monitor, refer to the NAD Omicron Monitor Instructions for Operation (Part No. 4114448) for power-up diagnostic indications, calibration, and setting of alarm parameters.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI DIAGNOSTICS (continued) NARKOMED MRI COPYRIGHT 2000 DRAEGER MEDICAL, INC. VERSION: 1.00 NM MRI SOFTWARE ID: 3B31 DIAGNOSTIC TESTS FIRMWARE PASS PASS VIDEO PASS A/D CONVERTER…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI DIAGNOSTICS (continued) Main Service Screen 2.2.1 View Mode The Main Service Screen displays the machine serial number, the last service date, hours run since last service and total hours run. To access the Main Service Screen, press and hold the Oxygen High Limit and Volume Low Limit keys, and press the key.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI DIAGNOSTICS (continued) 2.2.2 Service Mode In this screen, the Service Code Changes to SRVC . Press the key next to SELECT to enable the Technical Service ID entry as described on the next page.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI DIAGNOSTICS (continued) 2.2.3 Service Mode: I.D. Entry The Service Mode screen appears as shown in Figure 2-4. Press the key next to SELECT . Enter the first digit of your service code by using the keys to display the desired character.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI DIAGNOSTICS (continued) Service Log From the Service Screen (described earlier), press the key next to SRVC LOG . Figure 2-5 shows an example of the screen that will appear. This screen allows you to view the events recorded in the machine’s service log.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI DIAGNOSTICS (continued) PMS Criteria Screen The PMS Criteria Screen allows you to select the month when the PREVENTIVE MAINTENANCE DUE message appears on the power-up diagnostics screen.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI DIAGNOSTICS (continued) Oxygen Monitor Service Screen The Oxygen Monitor Service Screen shown in Figure 2-7 displays current readings for the O cells, a zero calibration procedure, and the stored calibration values.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI DIAGNOSTICS (continued) Pressure Monitor Service Screen The Pressure Monitor Service Screen shown in Figure 2-8 displays the current reading for airway pressure, a procedure for zero and span calibration, and the stored calibration values.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI DIAGNOSTICS (continued) Deleted 2-10 Rev. L…
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  This section contains information to assist the DrägerService qualified Technical Service Representative (TSR) in locating electrical faults affecting the Narkomed MRI anesthesia system. Since most troubleshooting efforts begin with verifying power supply voltages, the following paragraph outlines the voltage distribution scheme within the machine along with test points for each of the voltages.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI TROUBLESHOOTING GUIDE (continued) SV00034 J1 FROM F3 8V SUPPLY FUSE BATTERY (TYPE 3AG, SLO-BLO, CHARGER 1A, 250V, 313 001) J2 FROM BATTERY J3 TO ALARM CHANNEL FI BATTERY FUSE…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI TROUBLESHOOTING GUIDE (continued) F1 BATTERY FUSE, 10A, 3AG FAST J2 FROM BATTERY J1 POWER IN FLOW SENSOR POWER FUSE 0.5A, 3AG, FAST J7 TO NAD MONITOR F2 8V SUPPLY FUSE…
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  LIGHTS FEED THRU FILTERS 9V POWER VENTILATOR CONTROLLER MONITOR ALARM CHANNEL 30 PSI FIBER OPTIC INTERFACE FIBER OPTIC CABLE BATTERY BOX PCB VENT BATTERY SOLENOID FILTER POWER MAINS SUPPLY FIGURE 3-3. Narkomed MRI Block Diagram: Machines w/Core-M Monitor Rev. E…
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  THRU FILTERS VENTILATOR NAD MONITOR CONTROLLER ALARM CHANNEL 30 PSI FIBER OPTIC INTERFACE FIBER OPTIC CABLE FLOW BATTERY SENSOR BOX PCB VENT MODULE BATTERY SOLENOID FILTER POWER MAINS SUPPLY FIGURE 3-4. Narkomed MRI Block Diagram: Machines w/VPO Monitor Rev. F…
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  Table 3-2 lists common failure modes and symptoms (excluding simultaneous multiple faults) for the Narkomed MRI. Each failure mode or symptom is keyed to a troubleshooting guide flow chart at the back of this section to assist the TSR in locating a problem.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI TROUBLESHOOTING GUIDE (continued) GUIDE 1: Monitor Inoperative (Core-M Monitor) START ALL MONITOR FUNCTIONS WORKING? CONNECT POWER CORD CHECK: POWER TO PERFORM A BATTERY BOX PCB ALL MONITOR POWER CORD COMPLETE PMS…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI TROUBLESHOOTING GUIDE (continued) GUIDE 2: No O Supply Pressure Alarm START O2 SUPPLY PRESSURE ALARM FUNCTIONAL? CHECK: -O2 PRESSURE SWITCH -CABLE FROM BATTERY BOX PCB TO ALARM CHANNEL -SUPPLY VOLTAGE TO ALARM CHANNEL…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI TROUBLESHOOTING GUIDE (continued) GUIDE 3: Ventilator Inoperative START IS VENTILATOR WORKING PROPERLY? CHECK REMOTE SOLENOID, REPLACE IF DEFECTIVE VERIFY CORRECT SETTINGS: VENTILATOR SWITCH ON, INSP. FLOW, FREQUENCY, I:E RATIO, TIDAL VOLUME IS VENTILATOR PRESS.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI TROUBLESHOOTING GUIDE (continued) Guide 4: No Audio Alarms, Display Blank, Keypad Inoperative (VPO Monitor) START AUDIO KEYPAD DISPLAY ALARMS INOPERATIVE BLANK FAIL? CHECK POWER & DATA CABLES FROM SOURCE TO MONITOR CHECK POWER SUPPLY…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI TROUBLESHOOTING GUIDE (continued) Guide 5: Serial Port Communication Failure (VPO Monitor) START SERIAL PORT COMMUNICATION FAILURE? CHECK PERIPHERAL AND HOST SERIAL PORT CONFIGURATION SETTINGS SERIAL PORT COMMUNICATION FAILURE? CONNECT…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI TROUBLESHOOTING GUIDE (continued) Guide 6: Loss of Breathing Pressure Monitor (VPO Monitor) START BREATHING PRESSURE MONITOR WORKING PROPERLY? CHECK PILOT LINE CONNECTION AT BOTH ENDS PILOT LINE CONNECTED? PERFORM THE…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI TROUBLESHOOTING GUIDE (continued) Guide 7: Loss of Respiratory Volume Monitor (VPO Monitor) START RESPIRATORY VOLUME MONITOR WORKING PROPERLY CHECK HOSE CONNECTIONS, VALVE MOUNTING & GASKETS REINSTALL ORIGINAL CONTACT NAD IS FLOW…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS…
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  WARNING: Do not place any object on this machine unless it is specifically labeled to be used in an MRI scanning room and on the Narkomed MRI anesthesia system. Objects placed on this machine that are not designed for use with…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.1 Cylinder Yoke Assemblies Each cylinder yoke contains a replaceable filter and check valve assembly. Figure 4-1 shows a typical cylinder yoke mounting arrangement. Access to the yoke mounting screws and gas line connection requires that the table top and the table bottom cover be removed from the machine.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) YOKE ASSEMBLY (TYPICAL) REAR FRAME RAIL FILTER AND CHECK VALVE ASSEMBLY SV00096 GAS LINE FIGURE 4-1. Cylinder Yoke Assembly…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.1.12 Position the yoke on the spacer, and install the two mounting screws and lockwashers. Tighten the screws securely. Connect the gas line fitting to the yoke.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.2 Cylinder Pressure Regulators Access to the cylinder pressure regulators requires removal of the table top and the table bottom cover from the anesthesia machine. Figure 4-2 shows the mounting arrangement of the regulators and typical connections.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) N2O CYLINDER SV00069 PRESSURE REGULATOR SET SCREW (2X PER REGULATOR) O2 TEST CONNECTION O2 CYLINDER PRESSURE REGULATOR N2O TEST CONNECTION SIDE VIEW OF REGULATOR (TYP.) ADJUSTMENT SCREW ACORN NUT FIGURE 4-2.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.2.14 Tighten the regulator mounting setscrews to a torque of 50 to 55 in. lbs. 4.2.15 Tighten the compression fittings. 4.2.16 Locate the TEE fitting in the ¼ in. diameter regulator output line, and remove the plug from the TEE fitting.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.3 Cylinder Cutoff Valves (Canada) Access to the cylinder cutoff valves requires removal of the table top and the table bottom cover from the anesthesia machine. Figure 4-3 shows the locations of the cutoff valve assemblies.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) SV00062 O2 CYLINDER N2O CYLINDER CUTOFF VALVE CUTOFF VALVE ASSEMBLY ASSEMBLY FIGURE 4-3. Cylinder Cutoff Valves (Canada)
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.3.14 Perform the following test: —Remove the plug from the test gauge connection at the Tee fitting in the regulator outlet piping, and install a test gauge.
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  Figure 4-4 shows gauge mounting and connection details. NOTE: The gauges used in the Narkomed MRI are non-magnetic and are not interchangeable with gauges from the other Narkomeds. 4.4.1 Disconnect all pipeline hoses and set the System Power switch to ON.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) REAR VIEW OF FLOWMETER HOUSING WITH REAR COVER REMOVED GAUGE MOUNTING NUTS (TYPICAL) FLEXIBLE TUBING CONNECTION (PIPELINE PRESSURE GAUGES) COMPRESSION FITTING SV00086 (CYLINDER PRESSURE GAUGES) FIGURE 4-4.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) NOTE: Intermediate assemblies may need to be removed to allow access to the gauge connections and mounting hardware. Be sure to keep a record of the disassembly sequence so that all tubing can be correctly re-assembled.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.4.14.1 Open the cylinder valve and check for a pressure indication on the corresponding gauge at the gas instrumentation panel. NOTE: The cylinder used for this test must contain the following minimum pressure: : 1000 Psi O: 700 Psi…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.5 Flowmeters The flowmeter tubes are held by compression in gaskets at the top and bottom of each tube. Each upper gasket is seated in an adjustable retainer that allows removal of the tube as shown in Figure 4-5.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) FLOW TUBE RETAINER SCREW UPPER FLOW TUBE RETAINER FLOW TUBE LIGHTING CHANNEL FLOW RESTRICTOR SV40605 GASKET GUIDE RING FIGURE 4-5. Flowmeters 4-16…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) NOTE: The upper flow tube retainer screws can be loosened from the front of the machine with a modified (short) allen wrench. Alternatively, the retainer screws can be reached through a slot in the bottom of the ventilator box.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.5.19 Place the plexiglass cover over the gauges and flow tubes, and ensure that the cover is fitted properly over the flow control valves. 4.5.20 Place the knob guard over the flow control valves and install its two retaining screws.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.6 Flow Control Valves The flow control valves have replaceable elements that are removable from the front of the flowmeter assembly as shown in Figure 4-6. Each flow control knob has a clockwise positive stop arrangement that prevents damage to the valve seat.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) VALVE FLOW CONTROL HOUSING VALVE STOP PIN WRENCH FLATS KNOB GUARD SV50502 LABEL KNOB FIGURE 4-6. Flow Control Valves 4-20…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.6.14 Turn the System Power switch to ON. 4.6.15 A: For the O flow control valve: Open the oxygen cylinder valve. Turn the flow control valve clockwise until the flow rate will not drop any further.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.7 Auxiliary Oxygen Flow Meter The auxiliary oxygen flowmeter is attached to the side of the machine’s flowmeter housing by a stud and nut arrangement accessible from inside the housing. A flexible supply tube from the flowmeter connects to a hose barb fitting at the system power switch.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) PRESS-ON HOSE CLAMP FLEX TUBING KEP HEX NUT (2X) AUXILIARY O2 FLOWMETER FLEX TUBING TIE STRAP SV00097 FIGURE 4-7. Auxiliary O2 Flowmeter Rev.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.8 Oxygen Supply Pressure Failure Protection Device The oxygen supply failure protection devices (failsafe assemblies) are located within the flowmeter housing. Access to these assemblies requires removal of the rear cover. Figure 4-8 shows a typical arrangement of a failsafe assembly and its connections.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) OXYGEN SUPPLY FAILURE PROTECTION DEVICE (N2O CONTROL DEVICE ILLUSTRATED) O2 CONTROL LINE TO N2O FLOW CONTROL VALVE CHECK VALVE FROM CYLINDER PRESSURE REGULATOR FROM PIPELINE INLET ASSEMBLY…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.8.12 Perform the following test: 4.8.12.1 Open the cylinder valves. 4.8.12.2 Set the System Power switch to ON. 4.8.12.3 Set the oxygen flow to five liters per minute. 4.8.12.4 Set the other gas flow to five liters per minute.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.9 Alarm Channel and Oxygen Supply Pressure Alarm Switch The alarm channel assembly includes the oxygen supply pressure alarm switch, the alarm circuit board, and the system power switch. NOTE: Service replacement alarm channel assemblies are supplied without the O supply pressure alarm switch and wire harness.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) REAR VIEW SIDE VIEW SV00395 UPPER ALARM CHANNEL MOUNTING SCREW ALARM GROUND CIRCUIT CONNECTION BOARD AUXILARY O2 FLOWMETER CONNECTION CONNECTIONS ADJUSTMENT WHEEL INCREASE OXYGEN SETPOINT…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) REAR VIEW SIDE VIEW FLOATING GROUND DETAIL UPPER ALARM CHANNEL MOUNTING SCREW ALARM CIRCUIT BOARD AUXILARY O2 FLOWMETER CONNECTION CONNECTIONS ADJUSTMENT WHEEL OXYGEN INCREASE SUPPLY…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) This page intentionally left blank Rev. F 4-28B…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.9.13 Disconnect the remaining two O lines at the top and bottom of the tee fitting. 4.9.14 If the machine is equipped with an auxiliary O flowmeter, cut the tie strap on its flexible line and carefully remove the flex line from the hose barb.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.9.28 Locate the tee fitting in the ¼ in. diameter output line of the O regulator and remove the plug from the tee fitting. 4.9.29 Connect a dedicated O test gauge to the tee fitting.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.10 Oxygen Ratio Controller The Oxygen Ratio Controller (ORC) is part of the N O flowmeter sub-assembly and is located within the flowmeter housing. The ORC is accessible by removing the rear flowmeter housing cover.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) REAR VIEW OF FLOWMETER HOUSING WITH REAR COVER REMOVED ADJUSTING SCREW LOCKNUT O2 CONNECTION ORC ASSEMBLY O-RING #105 (NEOPRENE) FILTER O-RING 0.066 X 0.042 (BUNA-N) ORC ASSEMBLY MOUNTING SCREWS (3X)
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.10.12 Perform the ORC adjustment procedure given in Section 5 of this manual. 4.10.13 Reinstall the flowmeter housing rear cover. 4.10.14 Carefully inspect the machine to verify that no loose screws, washers, or tools are left on or in any part of the machine.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.11 Vaporizers The vaporizer is held to the machine by two metric sized hex screws. These screws are located at the back of the vaporizer mounting block as shown in Figure 4-11. Before removing the vaporizer from the machine, it must be completely drained and dried in accordance with the procedure given below.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) MOUNTING SCREWS (SUPPLIED) (P/N HW01072) VAPORIZER MOUNTING BLOCK O-RINGS (P/N 2121929) SV00067 FIGURE 4-11. Vaporizer Installation Rev. E 4-35…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) NOTE: Should a vaporizer containing anesthetic agent be accidentally tilted more than 45 degrees, it must be drained and flushed in accordance with instructions given in the manual supplied with the vaporizer.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.12 O2 Flush Valve The O flush valve is located at the front of the machine next to the fresh gas outlet. Access to the flush valve requires removal of the table top and the table bottom cover.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) COMPRESSION FITTING RESTRICTOR O2 FLUSH VALVE SPACER ACCESS HOLES WASHER INTERNAL TOOTH LOCKWASHER PUSH BUTTON GUARD RING FRONT VIEW WITH TABLE TOP REMOVED SET SCREWS SV49099 FIGURE 4-12.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.12.14 Place the washer and the O Flush button on the valve shaft. 4.12.15 Hold the O Flush button in and turn it until a set screw is visible through an access hole in the guard ring.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.13 Core-M Monitor The monitor is attached to the left side of the ventilator box. Access to the attaching hardware requires removal of the ventilator box top cover. Figure 4-13 shows the mounting and power connection arrangement for the monitor.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) LEFT SIDE VIEW OF MACHINE MONITOR MOUNTING SCREW (2X) SV00074 LOCKWASHER (2X) MONITOR POWER CABLE MONITOR POWER INPUT RETAINING RING CONNECTOR FIGURE 4-13. Core-M Monitor Replacement 4-41…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.13A VPO Monitor The VPO monitor is attached to the left side of the ventilator box with two kep nuts. Access to the attaching hardware requires removal of the ventilator box top cover. The monitor is supplied with cables attached.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) TOP VIEW OF VENTILATOR BOX 9-PIN CABLE FROM WITH COVER REMOVED FLOW SENSOR MODULE POWER CABLE FROM J7 IN BATTERY BOX CABLE TO ALARM CHANNEL J1 SV00040 MOUNTING…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.14 AV2+ Ventilator Controller Assembly (MRI) The Ventilator Controller assembly is retained in the ventilator box by two screws at the left side of the bezel. Access to these screws requires removal of the monitor from the ventilator box.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) ALUMINUM BLOCK REAR VIEW DETAIL OF SHIELD BOX SHIELD BOX AND FEED-THRU FILTER ASSEMBLY FIBER OPTIC CABLE TO RX1 ON BATTERY BOX PCB FEED-THRU FILTER (2X) GROUND WIRE, VPO VERSION (DOTTED LINE SHOWS CORE-M…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.14.10 Disconnect the fiber optic cable from RX1 on the battery box PCB. (See illustration.) 4.14.11 Feed the fiber optic cable up from the battery box to the AV2+ controller. Carefully coil the fiber optic cable and secure it to the AV2+ controller.
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  4.14.32 Perform the PMS Procedure given in Section 6. 4.14.33 Perform the Imaging Test Protocol (ITP) procedure given in Section 7 of the Narkomed MRI Setup and Installation Manual . 4.14.34 Complete the ITP form and associated checklist, Service Report, and return them to Draeger Medical, Inc.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) This page intentionally left blank Rev. E 4-44B…
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.15 Ventilator Solenoid Assembly The ventilator solenoid is remotely located within a double shielded housing in the battery box at the bottom of the machine. The solenoid and housing are replaced as a complete assembly.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) SOLENOID CABLE SOLENOID CONNECTION HOUSING ASSEMBLY O2 OUT O2 IN BATTERY BOX (AT BOTTOM OF MACHINE) SHOWN WITH COVER REMOVED SV00075 SOLENOID HOUSING MOUNTING SCREWS AND LOCKWASHERS (4X) FIGURE 4-15.
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  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.16 Ventilator Bellows Valve and Guide Assembly with Pressure Limit Control The Ventilator Bellows Valve and Guide Assembly, and the Pressure Limit Control are located in the bellows box on the left side of the machine.
• Page 90
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) SV50514 1:2 .5 I:E R A T IO F RE Q UE NC Y / min BELLOWS BOX FRONT VIEW FRONT PANEL BELLOWS MOUNTING SCREWS (4X) GUIDE…
• Page 91
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) BELLOWS SV50414 ADJUSTMENT TUBE BELLOWS BOX FRONT VIEW WITH FRONT PANEL REMOVED FLEX TUBING FROM CONTROLLER UPPER BELLOWS SUPPORT PLATE SUPPORT PLATE BOTTOM VIEW OF SCREWS (3X) BELLOWS BOX…
• Page 92
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.16.13 Unscrew the bellows adjustment tube from the replacement bellows valve. 4.16.14 Position the support plate in the bellows box and reconnect the large and small diameter tubing that was previously removed.
• Page 93
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.17 Caster The casters are threaded into the legs of the machine frame. A typical arrangement is shown in Figure 4-17. Caster replacement requires that the machine be tilted to provide enough clearance for the caster stem to be withdrawn from the bottom of the frame rail.
• Page 94
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) LOWER FRAME RAIL THREADED STEM SV00073 FIGURE 4-17. Caster Replacement Rev. E 4-52…

• Page 95: Battery

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.18 Battery The backup battery is located in the battery box at the bottom of the machine. Access to the battery requires removal of the battery box cover. Figure 4-18 shows the battery connection and mounting arrangement on early machines.

• Page 96
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) BATTERY RETAINER RETAINER NUT (2X) BATTERY TERMINAL SCREW AND NUT (2X) BATTERY WIRE HARNESS BATTERY BOX (AT BOTTOM OF MACHINE) SHOWN WITH COVER REMOVED SV00255 FIGURE 4-18.
• Page 97
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) BATTERY RETAINER NUT (2X) RETAINER TERMINAL SCREW AND NUT (2X) BATTERY BATTERY WIRE HARNESS BATTERY BOX (BACK VIEW WITH COVER REMOVED) SV00182 Figure 18A.
• Page 98
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) This page intentionally left blank Rev. E 4-54B…

• Page 99: Power Supply Pcb

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.19 Power Supply PCB The power supply PCB is located in the battery box at the bottom of the machine. Access to the PCB requires removal of the battery box cover. Figure 4-19 shows the power supply PCB connection and mounting arrangement on early machines.

• Page 100
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.19.9 Carefully inspect the machine to verify that no loose screws, washers, or tools are left on or in any part of the machine. 4.19.10 Perform the PMS Procedure given in Section 6.
• Page 101
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) J2 (BATTERY) PCB MOUNTING SCREWS AND LOCK WASHERS (4X) J1 (POWER IN) J5 (NOT USED) J3 (ALARM CHANNEL) POWER SUPPLY J4 (FLOW SENSOR MODULE J1) PCB ASSEMBLY J8 (NOT USED) J7(TO MONITOR)
• Page 102
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) This page intentionally left blank Rev. E 4-56B…
• Page 103
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.20 Primary Power Supply (early design) The primary power supply in the MRI system is located outside the MRI room. Figure 4-20 shows the primary power supply. NOTE: This power supply can not be repaired.
• Page 104
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) SV00393 FIGURE 4-20. Primary Power Supply Replacement (early models) Rev. F 4-58…

• Page 105: A Primary Power Supply (Later Design)

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.20A Primary Power Supply (later design) The later design primary power supply is installed on an outside wall of the MRI facility, and connects to a through-the-wall filter as shown in Figure 4-20A. The power supply is not servicable in the field and is replaced as an assembly if needed.

• Page 106
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) MRI ROOM OUTSIDE WALL OUTSIDE FILTER BOX POWER SUPPLY #8 SCREW (4X) SV00021 OUTPUT CABLE FIGURE 4-20A. Primary Power Supply Replacement (later design) Rev.

• Page 107: Power Supply Filter

  4.21.13 Perform the PMS Procedure given in Section 6. 4.21.14 Perform an Imaging Test Protocol (ITP) procedure as given in Section 7 of the Narkomed MRI Setup and Installation Manual . Rev. E 4-59…

• Page 108
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.21.15 Complete the ITP form, associated checklist and Service Report, and return them to the Draeger Medical, Inc. Service Department. COVER SCREW (8X) COVER OUTSIDE ROOM…
• Page 109
  REPLACEMENT PROCEDURES (continued) 4.22 Flow Sensor Replacement: Machines with VPO Monitor The ultrasonic flow sensor assembly in the Narkomed MRI comprises the transducer unit at the absorber, its electronics module located in the battery box, and a permanently joined interconnecting cable. Access to the electronics module requires opening the battery box and removing the battery.
• Page 110
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI REPLACEMENT PROCEDURES (continued) 4.22.17 Reinstall the battery box cover — be sure that the flow sensor cable strain relief bushing is in the slot in the cover. 4.22.18 Install the flow sensor on the absorber and re-connect the hoses.

• Page 111: Section 5: Adjustment And Calibration Procedures

  WARNING: Do not place any object on this machine unless it is specifically labeled to be used in an MRI scanning room and on the Narkomed MRI anesthesia system. Objects placed on this machine that are not designed for use with…

• Page 112: Cylinder Pressure Regulator Adjustment

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.1 Cylinder Pressure Regulator Adjustment 5.1.1 Disconnect all pipeline hoses and turn the System Power switch to ON . 5.1.2 Close all cylinder valves except the O valve.

• Page 113
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) CAUTION: Based on information supplied by the cylinder regulator manufacturer, when the regulator is used for gases other than N2O or CO2, its output pressure will decrease 0.5 for every 100 psi increase in cylinder pressure above 1000 psi.
• Page 114
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.1.15 Replace the acorn nut on the bottom of the regulator. 5.1.16 Close the cylinder valve and allow pressure to drain from the system. 5.1.17 Close all of the flow control valves and set the System Power switch to STANDBY .
• Page 115
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) N2O CYLINDER SV00069 PRESSURE REGULATOR SET SCREW (2X PER REGULATOR) O2 TEST CONNECTION O2 CYLINDER PRESSURE REGULATOR N2O TEST CONNECTION SIDE VIEW OF REGULATOR (TYP.) ADJUSTMENT SCREW ACORN NUT…
• Page 116
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.1.19 Reinstall the table bottom cover. 5.1.20 Reinstall the table top and tighten its retaining screws. 5.1.21 Connect the pipeline hoses. 5.1.22 Carefully inspect the machine to verify that no loose screws, washers, or tools are left on or in any part of the machine.

• Page 117: Oxygen Supply Pressure Alarm Switch Adjustment

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.2 Oxygen Supply Pressure Alarm Switch Adjustment 5.2.1 Disconnect all pipeline hoses and set the System Power switch to ON . 5.2.2 Close all cylinder valves except the O valve.

• Page 118
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) REAR VIEW OF ALARM CHANNEL, FLOWMETER HOUSING REAR COVER REMOVED ADJUSTMENT WHEEL OXYGEN SUPPLY PRESSURE ALARM SWITCH INCREASE SETPOINT DECREASE SETPOINT SV00098 FIGURE 5-2.
• Page 119
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.2.17 Reinstall the table top and tighten its retaining screws. 5.2.18 Reinstall the rear cover and its retaining screws. 5.2.19 Connect the pipeline hoses. 5.2.20 Carefully inspect the machine to verify that no loose screws, washers, or tools are left on or in any part of the machine.

• Page 120: Oxygen Ratio Controller (Orc) Adjustment

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.3 Oxygen Ratio Controller (ORC) Adjustment 5.3.1 Remove the rear cover of the flowmeter housing. 5.3.2 Connect a calibrated oxygen monitor to the fresh gas outlet. 5.3.3 Disconnect the pipeline hoses.

• Page 121
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.3.19 Un-pinch the N O bypass line on the ORC. 5.3.20 Close the O flow control valve, and fully open the N O flow control valve.

• Page 122: Oxygen Monitor Calibration: Core-M Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.4 Oxygen Monitor Calibration: Core-M Monitor 5.4.1 Turn the System Power switch to ON. 5.4.2 Expose the O sensor to room air. 5.4.3 Press the O key on the monitor.

• Page 123: Flow And Pressure Calibration: Core-M Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.5 Flow and Pressure Calibration: Core-M Monitor 5.5.1 Adult NOTE: A «FLOW CAL» message must appear on the display prior to continuing with testing.

• Page 124: Oxygen Sensor Calibration: Vpo Monitor

  5.6.5.4 When calibration is complete, reinstall the sensor assembly in the inspiratory valve dome. NOTE: If the O sensor will not calibrate properly, refer to The Oxygen Monitoring section of the Narkomed MRI Operator’s Instruction Manual for further information. 5-12 Rev. H…

• Page 125
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) REAR PANEL OF SENSOR HOUSING MONITOR INSPIRATORY VALVE DOME INSPIRATORY SENSOR VALVE DOME CORD PLUG CONNECTOR (P/N 4106387) SV00019 OXYGEN MONITOR SERVICE SCREEN ZERO CURRENT CELL A: 238 CURRENT CELL B: 250…

• Page 126: Breathing Pressure Monitor Calibration: Vpo Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.7 Breathing Pressure Monitor Calibration: VPO Monitor 5.7.1 Turn the System Power switch to ON. 5.7.2 Enter the Main Service Screen and select the Service Mode (ref. Section 2). 5.7.3 Proceed to the Pressure Monitor Service Screen.

• Page 127
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) REAR PANEL OF MONITOR QUICK-CONNECT FITTINGS SHORT PILOT LINE (P/N 4109368) SV00018 ABSORBER TOP ASSEMBLY PRESSURE MONITOR SERVICE SCREEN ZERO CURRENT PRESSURE VALUE: 250 ZERO CALIBRATION PROCEDURE: — REMOVE PRESSURE SAMPLE LINE FROM…

• Page 128: Vaporizer Interlock Adjustment

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) 5.8 Vaporizer Interlock Adjustment (MRI-2 machines only) 5.8.1 Turn the System Power switch to STANDBY, and turn each vaporizer handwheel to its Zero position. 5.8.2 Turn the upper vaporizer handwheel ON.

• Page 129
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI ADJUSTMENT AND CALIBRATION PROCEDURES (continued) UPPER SET SCREW COVER COVER SCREWS (6X) LOWER SET SCREW SV00439 FIGURE 5-6. Vaporizer Interlock Adjustment…
• Page 130
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS…
• Page 131
  RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE 6.0 PMC Procedure, Narkomed MRI The procedures in this section shall be performed in their entirety each time a component is removed, replaced, calibrated, adjusted and during all scheduled Periodic Manufacturer’s Certification (PMC) visits. A PMC Checklist form, P/N 4114551, available from the Draeger Medical, Inc.
• Page 132
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) WARNING: Always lock the casters after this anesthesia machine has been positioned in the MRI scanner room. Magnetic attractive forces between the magnet and the anesthesia machine may cause unintentional movement of the anesthesia machine if the casters are unlocked.
• Page 133
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 4113119 FRESH GAS LEAK TEST DEVICE CONNECT TO TEST PRESSURE GAUGE SVOOO22 6-2A…
• Page 134
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 8401892 SIEMENS TEST LUNG SV00025 6-2B…
• Page 135
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) S010159 BREATHING SYSTEM LEAK TEST DEVICE SVOOO23 S010158 FRESH GAS OUTLET VOLUME TEST DEVICE 6-2C…
• Page 136
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) SVOOO27 S000081 S000063 FLOW METER REGULATOR TEST TEST STAND PRESSURE GAUGE 6-2D…
• Page 137
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) Liter 2212300 vol/min MINUTE VOLUMETER SVOOO24 4104389 TEST TERMINAL ADAPTER 6-2E…
• Page 138
  Periodic Manufacturer’s Certification General Instructions The purpose of these procedures is to provide detailed instructions for performing a Periodic Manufacturer’s Certification (PMC) inspection the Narkomed MRI anesthesia machine. A PMC consists of a complete Periodic Manufacturer’s Service procedure and a certification level inspection based on Draeger Medical, Inc.
• Page 139
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) The letters A, B, C, D and the Roman Numerals I, II are used as codes in the individual matrix for each model of anesthesia machine. The letters A, B, C, and D are used in descending order to indicate the certification level of the equipment.
• Page 140
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) For example: A Narkomed 3 could have recommendation number 21 and failure code 61.1 apply. 21 — No ventilator pressure limit control. Code is B. 61.1 — Enflurane agent is unavailable to test.
• Page 141
  PMC PROCEDURE (continued) PM Certification Procedure for Narkomed MRI Anesthesia System 1. Use the PM Certification form for Narkomed MRI Anesthesia Systems (P/N 4114551). 2. Completely fill in the header information. 3. Replace the VENTILATOR RELIEF VALVE DIAPHRAGM in accordance with SP 00075.
• Page 142
  9. Based on the «EQUIPMENT CONDITION» inspect the machine for any «DMI RECOMMENDATIONS» that would apply. Use the Narkomed MRI section of the «DMI RECOMMENDATION GUIDELINES INDEX» (P/N S010250). Note all applicable DMI recommendations on the Executive Summary. NOTE: If using a carbon form, indicate the Equipment Condition number and to see reverse side under the «RECOMMENDATIONS / GENERAL COMMENTS»…

• Page 143: Safety Testing

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.1 Safety Testing 6.1.1 Circuit Isolation Test 6.1.1.1 Turn the System Power switch to STANDBY, remove the AC power cord from the outlet. 6.1.1.2 Set a multimeter to its highest resistance range, and carefully check for continuity between Pin 1 of the machine power connector located at the…

• Page 144: Self-Diagnostics: Core-M Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.1.3 Chassis Leakage Current Test 6.1.3.1 Press the gray Leakage key. Leave all other selections from the previous test the same. 6.1.3.2 Set the white keys on the Biotec 501 Pro labeled GROUND, NEUTRAL and POLARITY for normal polarity.

• Page 145: A Self-Diagnostics: Vpo Monitor

  6.2.A.1 Connect the pipeline supply or open the cylinders. 6.2.A.2 Turn the System Power switch to ON. 6.2.A.3 Verify that the following is displayed: NARKOMED MRI COPYRIGHT 2000 DRAEGER MEDICAL, INC. VERSION: 1.00 NM MRI SOFTWARE ID: 3B31 DIAGNOSTIC TESTS…

• Page 146: C Service Data: Vpo Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.2C SERVICE DATA: VPO Monitor 6.2C.1 Press and hold the Oxygen High Limit key and the Volume Low Limit key, and then press the key.

• Page 147: Battery Circuit Test

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.3 Battery Circuit Test 6.3.1 Deleted 6.3.2 If needed, replace the battery as outlined in the Battery Replacement Procedure in Section 4 of this manual/ 6.3.3 Is «ON»…

• Page 148: High Pressure Leak Test

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.4 High Pressure Leak Test 6.4.1 Yoke Assemblies 6.4.1.1 Turn the ventilator off. 6.4.1.2 Turn the System Power switch to STANDBY. 6.4.1.3 Disconnect the pipeline supply or close the cylinders.

• Page 149
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.4.2 Oxygen High Pressure Leak Test 6.4.2.1 Disconnect the pipeline supplies. 6.4.2.2 Turn the System Power switch to STANDBY. 6.4.2.3 Open the oxygen cylinder valve. 6.4.2.4 Let the pressure stabilize.

• Page 150: High Pressure Regulator Test

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.5 High Pressure Regulator Test 6.5.1 Disconnect all pipeline hoses and set the System Power switch to ON. 6.5.2 Close all cylinder valves except the O valve.

• Page 151: Gauges

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.5.17 Set the corresponding flow to 4 l/min. (900 ml/min. for CO 6.5.18 On the second test gauge, what is the regulator output pressure? ___ PSI (42 — 48), (27 — 33 for CO 6.5.19 Depressurize the gas circuit.

• Page 152: Oxygen Supply Failure Protection

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.7 Oxygen Supply Failure Protection 6.7.1 Nitrous Oxide O.F.P. Device 6.7.1.1 Disconnect the pipeline supplies. 6.7.1.2 Open and close the oxygen cylinder valve. 6.7.1.3 Open the nitrous oxide cylinder valve.

• Page 153: Flowmeter Test

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.7.3 Oxygen Supply Pressure Alarm 6.7.3.1 If not already connected, connect a dedicated O test gauge to the TEE fitting in the O regulator output line.

• Page 154
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.8.2.4 Close the nitrous oxide cylinder valve and bleed the pressure. 6.8.2.5 Connect the N O pipeline supply. 6.8.2.6 Is the correct flow control knob and label attached to the N O flow control valve? ___ (Y) 6.8.2.7…

• Page 155: Freshgas Leak Test

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.9 Freshgas Leak Test 6.9.1 Turn the System Power switch to STANDBY. 6.9.2 Remove the 15 mm connector from the FRESHGAS OUTLET. 6.9.3 Is the common gas outlet assembly in good condition? ___ (Y) 6.9.4…

• Page 156: Absorber System

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.10 Absorber System 6.10.1 Absorber System Inspection 6.10.1.1 Remove the inspiratory and the expiratory valve domes. 6.10.1.2 Is there a broken or bent pin on the valve assembly? Inspiratory ___ (N) Expiratory ___ (N) 6.10.1.3 Is there a broken pin on the valve domes?

• Page 157
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.10.1.14 Verify that the gauge is labeled «Non-Magnetic.» 6.10.1.15 Remove the O Med sensor plug from the inspiratory valve dome adapter and examine the two O-rings at the bottom of the plug. 6.10.1.16 Examine the two O-rings at the bottom of the sensor.
• Page 158
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.10.4 Absorber Flow Direction and Leak Test 6.10.4.1 Expiration Valve Leak Test 6.10.4.1.1 Close the APL valve. 6.10.4.1.2 Connect a 22mm hose between the inspiration valve and the bag mount.
• Page 159
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.10.4.3 Flow Direction Test 6.10.4.3.1 Attach a breathing circuit with a 3-liter bag at the Y-piece to the inspiration valve and expiration valves or the expiratory hose terminal on the ultrasonic flow sensor, if applicable.

• Page 160: A Bain Circuit Adapter — If Applicable

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.10A Bain Circuit Adapter — if applicble 6.10A.1 Close the APL valve by turning the knob fully clockwise. 6.10A.2 Insert the O sensor plug into the O sensor inlet on the Bain Circuit.

• Page 161: B Vapor Exclusion System

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.10B Vapor Exclusion System (if applicable) 6.10B.1 Set all vapors to (0). 6.10B.2 Adjust the handwheel on the upper vapor (viewed from the front of the machine) to any concentration above zero (0).

• Page 162: Flow And Pressure Calibration: Core-M Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.11 Flow and Pressure Calibration: Core-M Monitor NOTE: A «FLOW CAL» message must appear on the display prior to continuing with testing. This message appears after the 15 minute warm up period has completed.

• Page 163: A Flow And Pressure Calibration: Vpo Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.11A Flow and Pressure Calibration: VPO Monitor 6.11A.1 To bring up the Oxygen Monitor Service Screen, press the Mon Cal key. 6.11A.2 Remove the oxygen sensor from the valve dome adapter, and remove the oxygen sensor capsule from the oxygen sensor housing.

• Page 164: Oxygen Cal And Alarm Test: Core-M Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.12 Oxygen Cal and Alarm Test: Core-M Monitor 6.12.1 Expose the O sensor to room air. 6.12.2 Press the «O » key on the monitor. 6.12.3 Press the «21% O CAL»…

• Page 165: A O2 Med: Vpo Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.12A O2 MED: VPO Monitor 6.12A.1 Disconnect the oxygen sensor cable from the Oxygen Sensor interface. 6.12A.2 The following message shall appear on the display: O2 SENS DISC. 6.12A.3 Reconnect the O Med sensor.

• Page 166
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.12A.18 Verify that the high alarm limit has a range from 100 to 19%. 6.12A.19 Set the high alarm limit to 95. 6.12A.20 The message INSP O2 HIGH shall appear as an Advisory.

• Page 167: Pressure Accuracy Test: Core-M Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.13 Pressure Accuracy Test: Core-M Monitor 6.13.1 Interconnect the inspiratory and expiratory valves with a 12 inch hose with 22 mm ends (P/N 9995112). 6.13.2 Connect a pressure meter to the breathing pressure pilot line fitting on the absorber.

• Page 168: A Baromed: Vpo Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.13A BAROMED: VPO Monitor 6.13A.1 Disconnect the breathing pressure sensor line from the absorber. 6.13A.2 Connect a test pressure gauge and syringe to the breathing pressure sensor line.

• Page 169
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.13A.18 At what pressure does the APNEA-PRESSURE alarm deactivate? ___ cm O (7-13) 6.13A.19 Adjust the threshold to 18 cm H 6.13A.20 Increase the pressure to 20 cm H O, maintain the pressure, and start a stopwatch.

• Page 170: Apnea And Volume Alarm Test: Core-M Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.14 Apnea and Volume Alarm Test: Core-M Monitor 6.14.1 Attach a patient circuit with a 3L breathing bag to the absorber system. 6.14.2 Insert a test minute volumeter between the flow sensor and the expiratory valve.

• Page 171
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.14.18 Adjust the MIN VOL HI limit below the current displayed value. 6.14.19 Press the MIN VOL key and verify that the «MINUT HI» and «Mid Alert» audible and visual alarms activate within 13 to 17 seconds.

• Page 172: A Ultrasonic Flow Sensor: Vpo Monitor

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.14A Ultrasonic Flow Sensor: VPO Monitor 6.14A.1 Press the Breathing Volume LOW LIMIT key. Does a box appear around the Minute Volume Alarm Limit? ___(Y) 6.14A.2 What is the low minute volume alarm default? ___ (1.0) 6.14A.3…

• Page 173
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.14A.16 After the first breath is detected, do the APNEA-VOLUME Warning message and the MINUTE VOLUME LO Caution message deactivate? ___ 6.14A.17 Adjust the low alarm limit above the indicated minute volume. 6.14A.18 Does the MINUTE VOLUME LO message appear as a Caution? ___ (Y) 6.14A.19 Adjust the low alarm limit below the indicated minute volume.

• Page 174: Ventilator Test

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.15 Ventilator Test 6.15.1 Set the Man/Auto selector to BAG. 6.15.2 Set the FREQUENCY to 10 BPM. 6.15.3 Set the I:E RATIO to 1:2. 6.15.4 Set the Tidal Volume to 1000 ml.

• Page 175: Bellows Drive Gas Leak Test

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.15.21 What is the inspiratory time? ___ seconds (3.6 — 4.4) 6.15.22 Using a stopwatch, time the expiratory phase. 6.15.23 What is the expiratory time? ___ seconds (1.8 — 2.2) 6.15.24 Adjust the FREQUENCY and I:E RATIO through the following settings and verify that the ventilator cycles properly: FREQ.

• Page 176: F» Bellows Test

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.17 «F» Bellows Test 6.17.1 Set the FREQUENCY to 10 BPM. 6.17.2 Set the I:E RATIO to 1:2. 6.17.3 Adjust the O flow to 300 ml.

• Page 177: Inspiratory Pressure Limit Test

  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.18.7 Does the ventilator deliver the full Tidal Volume during the inspiratory time? ___ (Y) 6.18.8 Does the bellows stop adjust smoothly? ___ (Y) 6.19 Inspiratory Pressure Limit Test 6.19.1 Set the Inspiratory Flow to the middle of the medium range.

• Page 178
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.20.1.4 Connect a 12-inch hose between the inspiratory valve and the expiratory valve. 6.20.1.5 Set the Man/Auto selector to BAG. 6.20.1.6 Occlude the bag mount. 6.20.1.7 Insert the sensor from a calibrated Omicron monitor into the valve dome adapter on the inspiratory valve.
• Page 179
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.21 Oxygen Ratio Control (ORC) Test 6.21.1 Open the oxygen and nitrous oxide cylinder valves. 6.21.2 Depress the O FLUSH for 15 seconds. 6.21.3 Set the oxygen flow to 1000 ml.
• Page 180
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.22 Oxygen Flush and 100% O2 Final Test 6.22.1 Close the nitrous oxide cylinder valve. 6.22.2 Turn the SYSTEM POWER switch to ON. 6.22.3 Set the oxygen flow rate to 5 l/min.
• Page 181
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.23 Scavenger Interface, A/C 6.23.1 Remove all scavenger hoses one at a time, and drain all accumulated moisture. Inspect all scavenger hoses for deterioration and replace any worn hoses.
• Page 182
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.23.8.5 After the ventilator bellows inflates, the flow of oxygen will exit the system through the positive pressure safety relief valve. At this point, the absorber system breathing pressure gauge shall indicate a pressure of 10.0 cm H O or less.
• Page 183
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.24.9.4 Adjust the scavenger needle valve until the flowmeter indicates between the white lines. Close all flow control valves on the anesthesia machine. Occlude the absorber breathing bag terminal.
• Page 184
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI PMC PROCEDURE (continued) 6.25 Suction Regulator (if applicable) 6.25.1 Verify that the suction bottle is attached to the suction regulator. 6.25.2 Verify that vacuum is attached to the ¾ in. DISS vacuum connection. 6.25.3 Set the vacuum on/off valve to the OFF (vertical) position.
• Page 185
  This section outlines the software installation procedure, including the equipment needed and its connections. Software updates to the Narkomed MRI anesthesia system are done through a serial port connection to an external PC using the batch file LOADMRI.BAT. SOFTWARE TRANSFER TO PC VIA MODEM Equipment required: —Interface Cable, NAD Part No.
• Page 186
  NM MRI REAR VIEW OF MONITOR SERIAL INTERFACE PORT COVER SV00043 FIGURE 7-1. Narkomed MRI Serial Port Location 7.2.6 Type LOADNMMRI and press ENTER. 7.2.7 Turn the System Power switch to ON. 7.2.8 As the software is downloading, the incremental number of bytes sent will be displayed on the PC screen.
• Page 187
  SPARE AND REPLACEMENT PARTS 8.0 SPARE AND REPLACEMENT PARTS Part numbers for field-replaceable items on the Narkomed MRI anesthesia system are listed on the following pages, along with part numbers for related hardware and cables. The item numbers are keyed to the accompanying illustrations to aid in identifying the item and its location.
• Page 188
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00095…
• Page 189
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER 1 *AV2+ Ventilator Controller (Bezel) Asm., EMI shielded (Core-M version) SE4113132-004 *AV2+ Ventilator Controller (Bezel) Asm., EMI shielded (VPO version) . . . SE4113132-006 *AV2+ Ventilator (Bezel) Asm., EMI shielded (Invivo- VPO version) .
• Page 190
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00094…
• Page 191
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Screw, 6-32 x ¼ in. Btn Hd Skt (4x) ……..HW09004 Collet (2x) .
• Page 192
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00093…
• Page 193
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Bellows Valve Assembly ……….4112272 Press-on Hose Clamp (2x) .
• Page 194
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) DISS BODY PIPELINE FITTINGS NIST BODY PIPELINE FITTINGS DISS NUT PIPELINE FITTINGS SV00091…
• Page 195
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER DISS Body Pipeline Fittings: DISS Fitting ……….. . 4102563 Air DISS Fitting .
• Page 196
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) N2O FAILSAFE ASSEMBLY FAILSAFE ASSEMBLY SV00092 8-10…
• Page 197
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER O Failsafe Assembly: Failsafe Block Asembly ……….4112043 Nipple, c NPT x ¾…
• Page 198
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) REAR VIEW OF FLOWMETER HOUSING WITH REAR COVER REMOVED SV00090 8-12…
• Page 199
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER ORC Assembly (low flow design) ……..4113329-001 O-ring, #105 (Neoprene) (2x) .
• Page 200
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) CORE-M VERSION VERSION FLOATING GROUND DETAIL SV00391 8-14…
• Page 201
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Machines with Core-M monitor: *Alarm Channel Assembly (Core-M version) ……SE10029-001 PCB assembly .
• Page 202
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) PIPELINE PIPELINE PIPELINE CYLINDER CYLINDER SV00088 8-16…
• Page 203
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Shield, Flowmeter, 3 Gas Air, Domestic ……4111830-001 Shield, Flowmeter, 3 Gas Air, Canada .
• Page 204
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) DETAIL OF FLOW CONTROL VALVE SV00085 3 GAS MACHINE 8-18…
• Page 205
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Flow Tube, O , 1-10 l/min……… . 4112560-001 Flow Tube, O , 0.6-10 l/min (Low Flow) .
• Page 206
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) AUXILIARY O2 FLOW METER, NEW STYLE SV00084 8-20…
• Page 207
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Auxiliary O Flow Meter Assembly, new style ……4109310 Set Screw, cup point, 6-32 x ¼…
• Page 208
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00077 REGULATOR ASSEMBLY O2 REGULATOR ASSEMBLY O2 FLUSH VALVE ASSEMBLY 8-22…
• Page 209
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER O Regulator Assembly: Regulator…………4103591 Straight Fitting, ¼…
• Page 210
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00063 O2 CYLINDER N2O CYLINDER CUTOFF VALVE CUTOFF VALVE ASSEMBLY ASSEMBLY 8-24…
• Page 211
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Items: Relief Valve, 70 psi (Canada) ……… . .4110364 Cylinder Cutoff Valve Assembly (Canada) Pilot Actuator, Modified .
• Page 212
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) CUT-AWAY OF YOKES SHOWING INDEX PIN POSITION FOR EACH GAS INDEX PINS SV00083 8-26…
• Page 213
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Yoke, O …………1101620 Yoke, N O .
• Page 214
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00082 8-28…
• Page 215
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Caster W/Brake (2x) ……….4113874-001 Caster W/O Brake (2x) .
• Page 216
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00392 8-30…
• Page 217
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER NOTE: Item 1 is listed for reference only. This power supply can not be repaired. When needed, it should be replaced with the later design power supply, Item 2.
• Page 218
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) GROUND STUD DETAIL SV00038 8-32…
• Page 219
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Filter (Power Supply Relocate) Assembly ……. . .4114946 Filter, high current feedthru (incl.
• Page 220
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00068 Core-M Version 8-34…
• Page 221
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Battery Box Assembly (early machines w/Core-M monitor) ….4113876 Battery, 12 V Rechargeable.
• Page 222
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00042 VPO Version 8-36…
• Page 223
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER *Battery Box Assembly (later machines w/VPO monitor) ….4116235 *Battery Box Assembly (Invivo w/VPO monitor) .
• Page 224
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00081 EXPIRATION NSPIRATIO MAN/AUTO SELECTOR BEFORE USE BEFORE USE 8-38…
• Page 225
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Absorber Assembly, MRI ……… . 4109430-001 Inspiratory Valve Assembly w/O sensor mount .
• Page 226
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00080 ABSORBER ASSEMBLY FLANGE 8-40…
• Page 227
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Valve, Man/Auto Selector ……… . 4112217-001 APL Valve .
• Page 228
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00079 8-42…
• Page 229
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Open Reservoir Scavenger Assembly ……Euro color 4107624-003 Elbow, c M x ¼…
• Page 230
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00078 8-44…
• Page 231
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Scavenger, A/C, MRI……….4106161-002 Scavenger, A/C, MRI-INVIVO .
• Page 232
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00045 8-46…
• Page 233
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Core-M Monitor (Service Exchange) ……..4115353 O2 Sensor Cable Assembly, EMI Shielded .
• Page 234
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00185 8-48…
• Page 235
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER VPO monitor …………4116091 Service Exchange part.
• Page 236
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00041 8-50…
• Page 237
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Ultrasonic flow sensor assembly, MRI ……..4116236 Service Exchange part .
• Page 238
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00437 8-52…
• Page 239
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Suction Assembly with re-usable canister (MRI) ….. . . 4106328-002 8-53…
• Page 240
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) SV00436 8-54…
• Page 241
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS NM MRI SPARE AND REPLACEMENT PARTS (continued) ITEM DESCRIPTION PART NUMBER Items 1 and 2 are listed for reference and apply to both MRI and MRI-2 machines. (MRI-2 illustrated on the facing page) Vaporizer mounting screws, M4-0.7 x 1 3/16 cap skt hd (2x per vaporizer) .
• Page 242
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS…
• Page 243
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS…
• Page 244
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS DrägerService is a division of Draeger Medical, Inc. 3122 Commerce Drive Telford, PA 18969 Tel: (215) 721-5402 (800) 543-5047 Fax: (215) 721-5784 Web: www.draegermedical.com Printed in the U.S.A.
• Page 245
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS Narkomed MRI Service Manual Rev. T summary of changes Page Cover ……..Changed Rev., and Date 8-39 .
• Page 246
  RETURN TO THIS MANUAL’S TABLE OF CONTENTS RETURN TO CD-ROM TABLE OF CONTENTS 8-49Added Invivo Service Exchange P/N for item no. 1 and added two additional item (O2 Sensors) to Not Shown list 8-55Added Invivo Service Exchange P/N for item no. 5 Rev.

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