Dräger Narkomed 2C Operating manual

DrägerService®
Technical
Service
Manual
Part Number: 4112259-001
Rev: U
Date: 7 September 2000
© 2000 Draeger Medical, Inc.
Narkomed 2C
Anesthesia System
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North
A
merica
n
Dräger
Narkomed 2C Service Manual Table of Contents
Summary of what's new in Revision U
DESCRIPTION PAGE
SECTION 1:
Introduction ........................................................1-1
SECTION 2:
Diagnostics .........................................................2-1
2.1 Service Menu Screen .......................................2-2
2.2 Service Log ..............................................2-4
2.3 PMS Criteria Screen .......................................2-5
2.4 Oxygen Monitor Service Screen ...............................2-6
2.5 Pressure Monitor Service Screen ..............................2-7
2.6 NVRAM Dump Screen ......................................2-8
SECTION 3:
Troubleshooting ......................................................3-1
3.1 Power Supply and Voltage Distribution .........................3-1
3.2 Battery .................................................3-3
3.3 Troubleshooting Guides .....................................3-3
SECTION 4:
Replacement Procedures ...............................................4-1
4.1 Cylinder Yoke Assemblies ...................................4-2
4.2 Cylinder Pressure Regulators .................................4-5
4.3 Cylinder Cutoff Valves (Canada) ..............................4-9
4.4 Cylinder and Pipeline Pressure Gauges ........................ 4-12
4.5 Flowmeters ............................................. 4-16
4.6 Flow Control Valves ....................................... 4-20
4.7 Oxygen Supply Pressure Failure Protection Device ............... 4-23
4.8 Alarm Channel and Oxygen Supply Pressure Alarm Switch ......... 4-26
4.9 Oxygen Ratio Controller .................................... 4-30
4.10 Vaporizers .............................................. 4-33
4.11 O2Flush Valve ........................................... 4-36
4.12 AV-2 and AV2+ Ventilator Controller Assembly .................. 4-39
4.13 Convenience Outlet AC Power Filter .......................... 4-42
4.14 Ventilator Bellows Valve and Guide Asm w/ Press Limit Control ..... 4-44
4.15 Caster ................................................. 4-48
4.16 Battery ................................................ 4-50
4.17 Power Supply ............................................ 4-53
4.18 Processor Assembly ....................................... 4-56
4.19 Remote Display Assembly .................................. 4-59
4.20 DATAGRIP Assembly ..................................... 4-61
4.21 Display Arm Assembly ..................................... 4-64
4.22 O.R. DATA MANAGER Sub-Assembly ......................... 4-67
4.23 Keyboard ............................................... 4-70
Rev. H i
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CONTENTS (continued) NM2C
DESCRIPTION PAGE
4.24 SPIROMED Respiratory Volume Sensor ....................... 4-72
4.25 Oxygen Sensor ........................................... 4-74
4.26 Auxiliary Oxygen Flowmeter ................................ 4-76
SECTION 5:
Adjustment and Calibration Procedures ...................................5-1
5.1 Cylinder Pressure Regulator Adjustment (except CO2) ..............5-2
5.1A CO2Cylinder Pressure Regulator Adjustment ....................5-4
5.2 Oxygen Supply Pressure Alarm Switch Adjustment ................5-5
5.3 Oxygen Ratio Controller (ORC) Adjustment ......................5-8
5.3A Low Flow Oxygen Ratio Controller (ORC) Adjustment ............5-10A
5.4 Display Arm Tension Adjustments ............................ 5-11
5.5 Oxygen Sensor Calibration .................................. 5-13
5.6 Breathing Pressure Monitor Calibration ........................ 5-15
5.7 Vaporizer Interlock Adjustment .............................. 5-17
SECTION 6:
PMS Procedure ......................................................6-1
6.1 Electrical Safety ...........................................6-2
6.2 Self-Diagnostics ...........................................6-4
6.3 Battery Circuit ............................................6-5
6.4 Configuration .............................................6-5
6.5 Service Data .............................................6-6
6.6 Calibrations ..............................................6-7
6.7A Scavenger, A/C ............................................6-8
6.7B Scavenger, Open Reservoir ...................................6-9
6.7C Scavenger Interface ....................................... 6-11
6.7D Suction Regulator ........................................ 6-13
6.8 Breathing System ........................................ 6-14
6.9 Manual Sphygmomanometer ................................ 6-22
6.10 Vapor Exclusion System .................................... 6-23
6.11 Yokes & Gauges .......................................... 6-24
6.12 High Pressure Regulator ................................... 6-26
6.13 High Pressure Leak ....................................... 6-28
6.14 Oxygen Supply Failure Protection ............................ 6-30
6.15 Flowmeters ............................................. 6-34
6.16 O2Med................................................. 6-38
6.17 Oxygen Concentrations .................................... 6-39
6.18 Auxiliary Oxygen flowmeter ................................. 6-41
6.19A Oxygen Ratio Controller .................................... 6-42
6.20 Baromed ............................................... 6-43
6.21 Ventilator .............................................. 6-45
6.22 Bellows Drive Gas Leak: Adult .............................. 6-46
6.23 Spiromed or Ultrasonic Flow Sensor .......................... 6-47
6.24A Bellows: Adult ........................................... 6-49
6.24B Ventilator Relief Valve: Adult ............................... 6-49
Rev. P
ii
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NM2C CONTENTS (continued)
DESCRIPTION PAGE
6.25A Bellows: Pediatric External ................................. 6-50
6.25B Bellows: Pediatric Internal .................................. 6-52
6.26 Trace & Trend ........................................... 6-54
6.27 Pressure Limit Controller .................................. 6-54
6.29 Audio Silence ............................................ 6-55
6.30 Oxygen Flush Valve ....................................... 6-56
6.31 Final Tests .............................................. 6-57
SECTION 7:
Software Update Procedure .............................................7-1
7.1 Software Transfer to PC via Modem ............................7-2
7.2 Installing NM2C Software from a PC ...........................7-2
7.3 Installing NM2C Software from the ORDM ......................7-4
7.4 Installing NM2C Software from a PC using the SST ...............7-5
7.5 Installing NM2C Software from the ORDM using the SST ...........7-6
7.6 SST Operation ............................................7-7
SECTION 8:
Spare and Replacement Parts
ASSEMBLY/PART PAGE
Processor Asm. and related cables, Fan, Convenience Outlets and related items . 8-2, 8-3
AV-2 Ventilator Controller Assembly .................................. 8-4, 8-5
Valve Case and Guide Assembly, Pressure Limit Control, Bellows Assembly. . . . 8-6, 8-7
Bellows Valve Assembly details .................................... 8-7A, 8-7B
Display Arm, Datagrip and Display Assemblies .......................... 8-8, 8-9
Pipeline Inlet Fittings ............................................8-10, 8-11
Failsafe Assemblies, Minimum O2Flow Valve Assembly ..................8-12, 8-13
Vapor Indicator PCB, Vapor Select Switches, Gas Selector Switch and Valves . . 8-14, 8-15
ORC Assembly .................................................8-16, 8-17
Alarm Channel Assembly and related cables ...........................8-18, 8-19
Flowmeter Shields, Knobs, Labels, Gauges ............................8-20, 8-21
Flow Tubes, Restrictor Assemblies, Flow Control Valve ...................8-22, 8-23
Cyl. Regulator Assemblies, O2Flush Valve and related parts ..............8-24, 8-25
CSA Items: Relief Valve, Cylinder Cutoff Valves ........................8-26, 8-27
Yokes, Common Parts, Labels ......................................8-28, 8-29
Sensor Interface Panel Asms., AC Power, Battery, Power Supply, Casters .....8-30, 8-31
O.R. Data Manager, Incl. Keyboard ..................................8-32, 8-33
Absorber Assembly, Breathing Pressure Hoses, Oxygen Sensor .............8-34, 8-35
Ultrasonic Flow Sensor Assembly ................................ 8-35A, 8-35B
Man/Auto Selector Valve ..........................................8-36, 8-37
Man/Auto Selector Valve (later design) ...............................8-38, 8-39
Auxiliary O2Flowmeter Assembly ...................................8-40, 8-41
Open Reservoir Scavenger .........................................8-42, 8-43
Open Reservoir Scavenger, old style .................................8-44, 8-45
A/C Scavenger & Vent Grill Adapter .................................8-46, 8-47
Rev. Q iii
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NARKOMED 2C ANESTHESIA SYSTEM
SV50533
VENTILATOR
O.R. DAT
A
MANAGER
(OPTIONAL)
DISPLAY
A
RM
REMOTE
DISPLAY
DATAGRIP
BREATHING SYSTEM
SENSOR
INTERFACE PANEL
1-0 Rev. D
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NM2C INTRODUCTION
1.0 RECOMMENDATIONS
Because of the sophisticated nature of Draeger Medical, Inc. anesthesia equipment and itscritical
importance in the operating room setting, it is highly recommended that only appropriately
trained and experienced professionals be permitted to service and maintain this equipment.
Please contact DrägerServiceSM at [phone] for service of this equipment.
Draeger Medical, Inc. also recommends that its anesthesia equipment be serviced at three-month
intervals. Periodic Manufacturer’s Service Agreements are available for equipmentmanufactured
by Draeger Medical, Inc. For further information concerning these agreements, please contact us
at Draeger Medical, Inc.[phone].
Draeger Medical, Inc. products/material in need of factory repair shall be sent to:
DrägerService
3124 Commerce Drive
Telford, PA 18969
(Include RMA Number)
HOW TO USE THIS MANUAL
The manual is divided into several sections. The DIAGNOSTICS section describes self-test and
service diagnostics for checking the system functions. An understanding of the on-board service
capabilities is necessary before any attempt is made to troubleshoot the unit. The
TROUBLESHOOTING section lists error codes and provides troubleshooting guides to assist the
TSR in locating the source of a problem. The REPLACEMENT PROCEDURES section contains
instructions for removal and replacement of the assemblies that are considered field-replaceable.
The ADJUSTMENT AND CALIBRATION PROCEDURES section contains the field procedures
needed to restore original system specifications. The Periodic Manufacturer’s Service (PMS)
PROCEDURE section outlines the steps required to verify the electrical, mechanical and
pneumatic safety of the unit and also identifies components requiring periodic replacement.
GENERAL TROUBLESHOOTING GUIDELINES
Troubleshooting the Narkomed 2C should always begin by communicating with those who
observedor experienceda problemwith the unit. This mayeliminate unnecessarytroubleshooting
steps. Once a general problem is identified, refer to the troubleshooting flow charts in Section 3
to determine the proper corrective action to be taken.
After a component has been replaced, verify that the unit is operating properly by running the
appropriate diagnostic procedure. The PMS PROCEDURE in Section 6 must also be performed
after any component has been replaced.
The general arrangement of the Narkomed 2C 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.
CAUTIONS are used in this manual to alert service personnel to the possibility of damage to the
equipment if a procedure is not performed correctly.
Rev. H 1-1
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INTRODUCTION NM2C
Copyright
Copyright © 1999 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.
Trademark Notices
CliniDAS, Datagrip, NAD Information Systems, NAD Logo, Narkomed, O.R. Data Manager,
O.R. Link, ORM, PC Prep/View, Quality Service For Life, Vigilance Audit, Vitalert, Vitalink
and Narkomed GS are registered trademarks of Draeger Medical, Inc. All other products or
name brands are trademarks of their respective owners.
Disclaimer
The content of this manual is furnished for informational use only and is subject to change
without notice. Draeger Medical, Inc. assumes no responsibility or liability for any errors or
inaccuracies that may appear in this manual.
Rev. L
1-2
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NM2C DIAGNOSTICS
2.0 DIAGNOSTICS
The Narkomed 2C contains a diagnostic system that monitors certain system functions and
records their operational status. A series of tests is performed when the system is powered
up and the results are displayed on the diagnostics screen shown in Figure 2-1. The display
also includes one of three messages at the completion of the diagnostics:
FUNCTIONAL: This message indicates that the NARKOMED 2C has passed all power-
up tests and is fully functional. The machine will proceed to the
MACHINE MONITOR screen after a short delay.
CONDITIONALLY This message indicates that a minor problem has been
FUNCTIONAL: detected. The NARKOMED 2C will retain this display until the trigger
is pressed, then the MACHINE MONITOR screen will be displayed.
NON-FUNCTIONAL: This message indicates that a serious problem has been
detected. The machine will not proceed into the MACHINE
MONITOR or SYSTEM MONITOR screen.
Further diagnostic functions are available through service screens that can be called up at
the display panel. The following paragraphs provide a description of each service screen that
can be accessed at the display. If no display is present upon system power-up, refer to Section
3 of this manual for troubleshooting assistance.
DIAGNOSTIC TESTS NARKOMED 2C
COPYRIGHT 1992, NAD INC.
VERSION: X.XX NM2C SW
VIDEO PASS SOFTWARE ID: XXXX
FIRMWARE PASS
STATIC RAM PASS
TIMER PASS
A/D CONVERTER PASS
AUDIO -PRIMARY PASS
-BACKUP PASS
SERIAL I/O PASS
CLOCK PASS
NON-VOLATILE MEMORY PASS
FUNCTIONAL
Figure 2-1: POWER-UP DIAGNOSTICS SCREEN
Rev. B 2-1
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DIAGNOSTICS (continued) NM2C
2.1 Main Service Screen
2.1.1 View Mode
The Main Service Screen displays the machine serial number, the last service
date, hours run since last service and total hours run. Selections listed on the
right side of the display allow entry into additional service screens.
To access the Main Service Screen, press and hold the and
VENTILATION
ALARMS OFF
keys, and press the Datagrip trigger. The View Mode service screen shown in
Figure 2-2 will then appear. (The VENTILATION ALARMS OFF key was
labeled LOG DATA on earlier machines.)
If the MONITORS service screens are accessed in the view mode, current
values will be displayed but the operator will not be able to perform
calibrations.
Additional service mode screens are described in the next paragraph. These are
accessed by pressing the trigger, which will highlight VIEW. Then scroll to the
desired service mode with the selection wheel and press the trigger.
MAIN SERVICE SCREEN
MACHINE SERIAL NUMBER : XXXXXXXX
LAST SERVICE DATE : 1- 3-94
HOURS RUN SINCE LAST SERVICE : 97
TOTAL HOURS RUN : 3383
VIEW
SERVICE CODE
EXIT
PMS
CRITERIA
MONITORS
SERVICE
LOG
MAIN
SELECTS
FUNCTION
⇒TO ADJUST
SETTING
NVRAM
DUMP
Figure 2-2: MAIN SERVICE SCREEN, VIEW MODE
Rev. A
2-2
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NM2C DIAGNOSTICS (continued)
2.1.2 Service Mode
The following additional service mode screens are available by selecting the
appropriate Service Code:
PMS: For performing scheduled Periodic Manufacturer’s Service
INST: For initial installation of the NM2C. This selection establishes the start
date for the warranty period.
SRVC: For unscheduled service visits requiring component replacements
or calibrations.
The Service Mode screen appears as shown in Figure 2-3. Press the trigger to
highlight the first Technical Service Representative I.D. box; rotate the
selection wheel until the first character of the I.D. appears, then enter the
selection by pressing the trigger. Enter the remaining three I.D. characters in
the same manner.
The selection wheel can now be used to select the service screens described in
the following paragraphs. Selecting RESET and pressing the trigger will set
the last service date to the current date, and the hours run since last service
to zero. Selecting ORDM DISPLAY allows O.R. Data Manager diagnostic
information to appear on the screen (pressing the trigger while in the ORDM
mode returns the display to the Service Mode). Selecting EXIT and pressing
the trigger will return the display to normal operation.
MAIN SERVICE SCREEN
MACHINE SERIAL NUMBER : XXXXXXXX
LAST SERVICE DATE : 1- 3-94
HOURS RUN SINCE LAST SERVICE : 97
TOTAL HOURS RUN : 3383
SERVICE CODE SRVC
TECHNICAL SERVICE
REPRESENTATIVE I.D.
EXIT
NVRAM
DUMP
PMS
CRITERIA
MONITORS
SERVICE
LOG
MAIN
SELECTS
FUNCTION
⇒TO ADJUST
SETTING
0000
RESET
ORDM
DISPLAY
Figure 2-3: MAIN SERVICE SCREEN, SERVICE MODE
Rev. A 2-3
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DIAGNOSTICS (continued) NM2C
2.2 Service Log
The Service Log Screen displays a tabular listing of each service event
including date, time, parameter, code and event description as shown in Figure
2-4.
To enter the Service Log screen from the Main Service Screen, highlight
SERVICE LOG (ref. Figure 2-3) with the selection wheel and press the trigger.
With SCROLL LOG highlighted, press the trigger to enable scrolling through
the list of service log entries with the selection wheel.
To obtain a printout of the service log (if you are in the Scroll mode, first
return to the selection mode by pressing the trigger), select PRINT LOG and
press the trigger to activate the printer.
Select EXIT and press the trigger to return the display to the Main Service
Screen.
SERVICE LOG
DATE TIME PARAMETER CODE DESCRIPTION
11-01-92 10:26 XXXXXXXX XXXX INSTALLATION
11-01-92 10:30 XXXXXXXX XXXX SOFTWARE STARTUP
11-02-92 07:30 XXXXXXXX XXXX O2 CAL
11-13-92 09:44 XXXXXXXX XXXX SOFTWARE STARTUP
SELECTS
FUNCTION
⇒ACTIVATES
FUNCTION
EXIT
PRINT LOG
SCROLL LOG
Figure 2-4: SERVICE LOG
Rev. A
2-4
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NM2C DIAGNOSTICS (continued)
2.3 PMS Criteria Screen
The PMS Criteria Screen allows a service representative to select for display
the month of the next scheduled Periodic Manufacturer’s Service. This screen
is shown in Figure 2-5.
To enter the PMS Schedule Service Screen from the Main Service Screen,
highlight PMS CRITERIA (ref. Figure 2-3) with the selection wheel and press
the trigger.
Turn the selection wheel to indicate the desired month, and press the trigger
to enter that month.
To return to the Main Service Screen, select EXIT and press the trigger.
SELECT CRITERIA FOR "PREVENTIVE MAINTENANCE" MESSAGE
1993
MONTH:
EXIT
SELECTS
FUNCTION
⇒TO ADJUST
SETTING
MAR
Figure 2-5: PMS CRITERIA SCREEN
Rev. A 2-5
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DIAGNOSTICS (continued) NM2C
2.4 Oxygen Monitor Service Screen
The Oxygen Monitor Service Screen shown in Figure 2-6 displays
current readings for the O2cells, a zero calibration procedure, and the
stored calibration values.
To enter the Oxygen Monitor Service Screen from the Main Service
Screen, highlight MONITORS (ref. Figure 2-3) with the selection wheel
and press the trigger.
To perform a zero calibration, highlight STORE ZERO with the
selection wheel, and follow the calibration procedure shown on the
screen. Pressing the trigger stores the current values as the new zero
calibration.
To proceed to the Pressure Monitor Service Screen, select PRESSURE
MONITOR and press the trigger. To return to the Main Service Screen,
select EXIT and press the trigger.
OXYGEN MONITOR SERVICE SCREEN
CURRENT CELL A: 366
CURRENT CELL B: 371
ZERO CALIBRATION PROCEDURE:
- REMOVE O2 CELL FROM SENSOR HOUSING
- LET CURRENT CELL VALUES STABILIZE
- SELECT "STORE ZERO" KEY
PRESS TRIGGER TO ENTER CALIBRATION VALUES
- REINSTALL OXYGEN CELL IN SENSOR HOUSING
STORED ZERO CELL A: 240
STORED ZERO CELL B: 241
STORE ZERO
SELECTS
FUNCTION
⇒ACTIVATES
FUNCTION
EXIT
PRESSURE
MONITOR
Figure 2-6: OXYGEN MONITOR SERVICE SCREEN
Rev. G
2-6
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NM2C DIAGNOSTICS (continued)
2.5 Pressure Monitor Service Screen
The Pressure Monitor Service Screen shown in Figure 2-7 displays the
current reading for airway pressure, a procedure for zero and span
calibration, and the stored calibration values.
To enter the Pressure Monitor Service Screen from the Oxygen Monitor
Service Screen, highlight PRESSURE MONITOR (ref. Figure 2-6) with
the selection wheel and press the trigger.
To perform a zero calibration, highlight STORE ZERO with the
selection wheel and follow the procedure shown on the screen. Pressing
the trigger stores the current value as the new zero calibration.
To perform a span calibration, highlight STORE SPAN with the
selection wheel and follow the procedure shown on the screen. pressing
the trigger stores the current value as the new span calibration.
To return to the Oxygen Monitor Screen, select OXYGEN MONITOR
and press the trigger. To return the Main Service Screen, select EXIT
and press the trigger.
PRESSURE MONITOR SERVICE SCREEN
CURRENT PRESSURE VALUE: 201
ZERO CALIBRATION PROCEDURE:
- REMOVE PRESSURE SAMPLE LINE FROM
ABSORBER, EXPOSE TO AIR
- LET CURRENT PRESSURE VALUE STABILIZE
- SELECT THE "STORE ZERO" KEY AND PRESS THE
TRIGGER TO ENTER THE CURRENT VALUE AS THE
CALIBRATION ZERO VALUE.
SPAN CALIBRATION PROCEDURE:
- REMOVE PRESSURE SAMPLE LINE FROM ABSORBER,
- APPLY 50 CMH20 CONSTANT PRESSURE AT THE SAMPLE
LINE, VERIFIED BY A KNOWN, CALIBRATED METER
- LET CURRENT VALUE STABILIZE
- SELECT THE "STORE SPAN" KEY AND PRESS THE
TRIGGER TO ENTER THE CURRENT VALUE AS THE
CALIBRATION SPAN VALUE.
STORED ZERO: 205
STORED SPAN: 544
STORE ZERO
SELECTS
FUNCTION
⇒ACTIVATES
FUNCTION
EXIT
OXYGEN
MONITOR
STORE SPAN
Figure 2-7: PRESSURE MONITOR SERVICE SCREEN
Rev. G 2-7
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DIAGNOSTICS (continued) NM2C
2.6 NVRAM Dump Screen
TheNVRAMDumpScreendisplayslocationsofnon-volatilememory(processor
status registers). This screen is shown in Figure 2-8.
To enter this screen from the Main Service Screen, highlight NVRAM DUMP
(ref. Figure 2-3) with the selection wheel and press the trigger.
To obtain a printout of this screen, press the trigger (with PRINT highlighted).
The register contents will be dumped to the printer port at 9600 baud.
To return to the Main Service Screen, select EXIT and press the trigger.
NVRAM DUMP
FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
F0F0F0F0 F0F0F0F0 F0F0F0F0 F0F0F0F0
F0F0F0F0 F0F0F0F0 F0F0F0F0 F0F0F0F0
FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
40203044 40203044 40203044 40203044
FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
F0F0F0F0 F0F0F0F0 F0F0F0F0 F0F0F0F0
F0F0F0F0 F0F0F0F0 F0F0F0F0 F0F0F0F0
FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
40203044 40203044 40203044 40203044
42443322 42443322 42443322 42443322
FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
PRINT
EXIT
SELECTS
FUNCTION
⇒ACTIVATES
FUNCTION
Figure 2-9: NVRAM DUMP SCREEN
Rev. G
2-8
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NM2C TROUBLESHOOTING GUIDE
3.0 TROUBLESHOOTING
This section contains information to assist the North American Dräger qualified
Technical Service Representative (TSR) in locating electrical faults affecting the
NARKOMED 2C monitoring and display devices. 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.
3.1 Power Supply and Voltage Distribution
In the NARKOMED 2C, +5VDC, +12VDC and -12VDC are supplied to J15 on
the processor board; +8VDC is supplied to J4 on the alarm channel and is also
distributed to the ventilator controller via J3 on the alarm channel. These
voltages can be measured at the connectors shown in Figure 3-1. Table 3-1 lists
the acceptable range for each voltage under normal load conditions. Figure 3-2
shows a block diagram of the NARKOMED 2C, including the primary and
secondary voltage distribution scheme.
TABLE 3-1: TEST POINTS AND ALLOWABLE RANGES
PROCESSOR VOLTAGE ACCEPTABLE RANGE
J15-14 (Pur) + 5 VDC 4.85 to 5.15 VDC
J15-4 (Yel) +12VDC 11.76 to 12.24 VDC
J15-13 (Orn) -12VDC -11.64 to -12.36 VDC
J15-15 (Blk) Common
ALARM CHANNEL VOLTAGE ACCEPTABLE RANGE
J3-9 (Wht) + 8 VDC 7.76 to 8.24
J3-3 (Orn) Common
SV50556
987
654
321
123
456
13 14 15
987
121110
PROCESSOR BOARD
CONNECTOR J15
(TOP VIEW OF CONNECTOR
AS SEEN FROM FRONT
OF MACHINE)
ALARM
CHANNEL
CONNECTOR J3
Figure 3-1: POWER SUPPLY TEST POINTS (REAR VIEW OF CONNECTORS)
Rev. U 3-1
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TROUBLESHOOTING GUIDE (continued) NM2C
J3
J4
J3
J15
J2
J3
30 PSI
SW
VENTILATOR
CONTROLLER
J2
FLOWMETER
LIGHTS
J4
J1
J16
ALARM
CHANNEL
J5
REMOTE
DISPLAY
DATAGRIP
J22
J2
J19
SPEAKER
VAPORIZER
SELECT FAN
J17
J1
RESP VOL
SENSOR
O2 SENSOR
CONVENIENCE
RECEPTACLES
FILTER
CB4
ORDM PROCESSOR
POWER
SUPPLY
MAINS
FILTER
CB1
CB3
BATTERY CB2 TB1
TB2
Figure 3-2: NARKOMED 2C BLOCK DIAGRAM (ELECTRICAL)
3-2
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NM2C TROUBLESHOOTING GUIDE (continued)
3.2 Battery
While the machine is operating from an AC line, the battery voltage at full
charge should be within the range of 12.83 to 14.18 VDC. Battery voltage can
be measured at TB1, terminals 1 and 2, on the power supply. During battery
operation, the low battery cutoff voltage should be within the range of 10.5 to
10.0 VDC.
3.3 Troubleshooting Guides
Table 3-2 lists common failure modes and symptoms (excluding simultaneous
multiple faults) for the monitoring and display devices in the NARKOMED2C.
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. These flow
charts assume that the machine is plugged into an AC outlet with the correct
voltage, and the machine is not running on its backup battery.
TABLE 3-2: NARKOMED 2C FAILURE MODE AND SYMPTOM LIST
FAILURE MODE / SYMPTOM CORRECTIVE ACTION
Loss of O2Monitor Guide 1
Loss of Breathing Pressure Monitor Guide 2
Loss of Respiratory Volume Monitor Guide 3
No Audio Alarms Guide 4
Serial Port Communication Failure Guide 5
No Oxygen Supply Pressure Alarms Guide 6
Display Blank Upon System Power-up Guide 7
Display Keypanel Inoperative Guide 8
No Datagrip Response Guide 9
Ventilator Inoperative Guide 10
3-3
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TROUBLESHOOTING GUIDE (continued) NM2C
GUIDE 1: Loss of O2Monitor
N
Y
N
Y
N
Y
Y
N
Y
N
N
Y
START
UNIT IS
FUNCTIONAL
DOES UNIT
PASS PMS?
CONTACT NAD
SERVICE DEPT.
REINSTALL ORIGINAL
PROCESSOR ASSEMBLY
PERFORM A
COMPLETE PMS
ON UNIT
IS O2
MONITOR WORKING
PROPERLY?
REPLACE
PROCESSOR ASSEMBLY
AS OUTLINED IN
SECTION 4
IS O2
MONITOR WORKING
PROPERLY?
CHECK INTERNAL
CABLE FROM
INTERFACE PANEL
TO J1 ON
PROCESSOR BOARD
INSTALL SENSOR
ELEMENT CORRECTLY
CONNECT SENSOR
CORD TO
INTERFACE PANEL
IS SENSOR
ELEMENT INSTALLED
CORRECTLY?
IS
SENSOR CORD
CONNECTED TO
INTERFACE
PANEL?
IS O2
MONITOR WORKING
PROPERLY?
3-4
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