2 ii Welch Allyn Propaq CS Vital Signs Monitor Copyright 2008 Welch Allyn. All rights are reserved. No one is permitted to reproduce or duplicate, in any form, this manual or any part thereof without permission from Welch Allyn. Welch Allyn assumes no responsibility for any injury to anyone, or for any illegal or improper use of the product, that may result from failure to use this product in accordance with the instructions, cautions, warnings, or statement of intended use published in this manual. Welch Allyn, Propaq, Acuity, FlexNet, Smartcuf, and Flexible Monitoring are registered trademarks of Welch Allyn. ParamSet is a trademark of Welch Allyn. SET, LNOP, and Masimo are registered trademarks of Masimo Corporation. Possession or purchase of a Masimo SpO 2 - equipped monitor does not convey any express or implied license to use the device with unauthorized sensors or cables which would, alone or in combination with this device, fall within the scope of one or more of the patents relating to this device. Nellcor and Oximax are registered trademarks of Nellcor Puritan Bennett. Software in this product is copyright Welch Allyn or its vendors. All rights are reserved. The software is protected by United States of America copyright laws and international treaty provisions applicable worldwide. Under such laws, the licensee is entitled to use the copy of the software incorporated with this instrument as intended in the operation of the product in which it is embedded. The software may not be copied, decompiled, reverse-engineered, disassembled or otherwise reduced to human-perceivable form. This is not a sale of the software or any copy of the software; all right, title and ownership of the software remain with Welch Allyn or its vendors. For information about any Welch Allyn product, call the nearest Welch Allyn representative: USA Australia Canada China European Call Center France Germany Japan Latin America Netherlands Singapore South Africa United Kingdom Sweden This device complies with Part 15 of the FCC rules and with the rules of the Canadian ICES-003. Operation is subject to the following two conditions: (1) This device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation. Caution! Changes or modifications not expressly approved by Welch Allyn could void the purchaser s authority to operate the equipment. Reorder Part Number XX (CD) Reorder Part Number XX (Printed) Manual Part Number Rev A, 01/2008 Welch Allyn Protocol, Inc SW Creekside Place Beaverton, OR USA Welch Allyn Ltd Navan Business Park Dublin Road, Navan County Meath, Republic of Ireland Printed in USA
3 iii Contents 1 - Safety summary Warnings Definitions Symbols Overview Purpose and scope Other applicable documents Unpacking procedure Warranty service Technical support services Recommended service intervals Identifying Propaq CS Monitor configurations Identifying the Acuity Communication options Monitor controls Self test and service menus Service test screens Functional verification Introduction Safety tests Functional verification Calibration Introduction Equipment needed Setup Recharger supply adjustments Main power supply adjustments Calibrating realtime ECG out Noninvasive Blood Pressure calibration Invasive Blood Pressure MSP Board (MCO2) calibration Troubleshooting Introduction Screen messages Battery capacity check Repair procedures Introduction
4 iv Contents Welch Allyn Propaq CS Vital Signs Monitor Propaq CS Monitor software Required tools Propaq CS Monitor options Field-Replaceable Units in the monitor Replacing the power input fuse Replacing the battery pack Opening the monitor Closing the monitor Replacing the Analog Board Replacing the Display Reinstalling the Display Replacing Recharger Board fuse (F2) Replacing air tubing Replacing cables Replacing PROMs Replacing the Recharger Board Replacing the pump Replacing the side panels Expansion Module Replacing Expansion Module front panel Replacing Expansion Module button board and buttons Replacing the printer Opening the SpO2 Module Replacing the SpO2 Boards Replacing the MSP/SpO2 Boards Replacing the Sidestream CO2 assemblies Replacing Expansion Module side panels Acuity Option repair procedures Technical overview Introduction System description NIBP pneumatics description Cabling diagrams Expansion Module and printer description Pulse oximetry option (SpO2) description Capnography (CO2) description Field Replaceable Units (FRUs) A - Manufacturable test equipment B - Fluke patient simulator modification
5 1 1 Safety summary Warnings This Safety Summary should be read by all Propaq CS monitor users. Specific warnings and cautions are placed throughout the documentation where they apply. Caution: Federal (U.S.A.) law restricts this device to sale, distribution, or use by or on the order of a licensed medical practitioner. WARNING Place the Propaq monitor and accessories in locations where they cannot harm the patient if they fall from their shelf or mount. Lift the monitor only by its handle; do not lift it by any attached cables. WARNING Do not connect more than one patient to a monitor. Do not connect more than one monitor to a patient. WARNING Do not use the monitor in an MRI suite or a hyperbaric chamber. WARNING Do not autoclave the monitor. Autoclave accessories only if the manufacturer's instructions clearly approve it. Many accessories can be severely damaged by autoclaving. WARNING Inspect the power adapter cord periodically for fraying or other damage, and replace the adapter as needed. Do not operate the apparatus from mains power with a damaged power adapter cord or plug. WARNING Make frequent electrical and visual checks on cables and electrode wires. WARNING When connecting the Acuity hardwire connection, connect the Propaq CS monitor to an Acuity system only. Connecting to other networks could damage the monitor or injure a patient. WARNING Safe interconnection between the Propaq monitor and other devices must comply with applicable medical systems safety standards such as IEC Within certain governmental jurisdictions, all interconnected accessory equipment must be labeled by an approved testing laboratory. After interconnection with accessory equipment, risk (leakage) current and grounding requirements must be maintained. WARNING As with all medical equipment, carefully route the patient cabling to reduce the possibility of patient entanglement or strangulation. WARNING Avoid electrosurgery burns at monitoring sites by ensuring proper connection of the electrosurgery return circuit so that the return paths cannot be made through monitoring electrodes and probes.
6 2 Safety summary Welch Allyn Propaq CS Vital Signs Monitor WARNING During defibrillation, keep the discharge paddles away from ECG and other electrodes, as well as other conductive parts in contact with the patient. Avoid contact with any accessories connected to the monitor s left side panel. WARNING To ensure patient safety, the conductive parts of the ECG electrodes (including associated connectors) and other patient-applied parts should not contact other conductive parts, including earth ground, at any time. WARNING Do not operate this product in the presence of flammable anesthetics or other flammable substance in combination with air, oxygenenriched environments, or nitrous oxide; explosion can result. WARNING The pulse oximetry channel should NOT be used as an apnea monitor. WARNING This monitor is to be operated by qualified personnel only. The operator of this monitor should read this entire manual, the monitor Reference Guide or Directions For Use, and all accessory Directions For Use before operating the monitor. WARNING This monitor should only be repaired by qualified service personnel. The operator should not attempt to open the monitor case or perform any maintenance on the monitor except for procedures explicitly described in this manual that can be performed by operators such as inspection and cleaning. WARNING When using a power adapter with this monitor, be sure to connect the power adapter to a three-wire, grounded, hospital-grade receptacle. Do not under any circumstances attempt to remove the grounding conductor from the power plug of the power adapter. Do not plug the power adapter into an extension cord. If there is any doubt about the integrity of the protective earth ground of the receptacle for the power adapter, do not plug in the power adapter; operate the monitor only on battery power. Contact your biomedical engineering department for assistance in identifying the proper power receptacle and making appropriate power connections. Note Within certain governmental jurisdictions, all interconnected accessory equipment must be labeled by an approved testing laboratory. After interconnection with accessory equipment, risk (leakage) current and grounding requirements must be maintained. To ensure conformance to risk (leakage) current requirements when operating from an ac mains power source, use only a Welch Allyn s series power adapter. To ensure patient safety, use only accessories recommended or supplied by Welch Allyn. For a list of those accessories, see the Welch Allyn Products and Accessories book that accompanied this manual (PN XX). Accessories must be used according to your hospital s standards and the manufacturer s recommendations. Always refer to the manufacturer s directions for use. A product that has been dropped or severely abused should be checked by qualified service personnel to verify proper operation and acceptable risk (leakage) current values. If the monitor detects an unrecoverable problem, an error message window appears containing an error number and a short message. Report such errors to Welch Allyn.
7 Service Manual Safety summary 3 Definitions While under warranty, the monitor should be serviced only by a Welch Allyn service technician. Note Caution WARNING Identifies information that may be important to the reader. Identifies conditions or practices that could result in damage to equipment or other property. Identifies conditions or practices that could result in personal injury. Symbols The following symbols may appear on the Propaq CS monitor or accessories. They are defined by the International Electrotechnical Commission, IEC 878 and IEC 417A. Off (Standby) On For continued fire protection, use only the specified fuse Direct current Non-ionizing electromagnetic radiation. This device contains an approved RLAN module frequency 2402 to 2480 MHz Fuse Direct current or alternating current Caution: Refer to Directions For Use and accompanying documentation See the accompanying manual Battery charging when green indicator illuminated Patient connections are Type CF, isolated for direct cardiac application, and protected against defibrillation Patient connections are Type BF, and protected against defibrillation Protected during defibrillation IPX1 n Two-way communication port Input port Output port Alternating current Non-ionizing electromagnetic radiation. This device contains an approved RLAN module frequency 5150 to 5825 MHz Recycle the monitor and battery separately from other waste. Refer to for collection point and additional information. Separate batteries from other disposables for recycling. Enclosure Protection Drip proof: Classification IPX1 per IEC Publication 529 Urgent alarm notification (output to Nurse Call system) Temperature sensor input Transformer meets requirements of a shortcircuit-proof safety-isolating power transformer For indoor use only (on power adapter only) Stacking limit by number This way up Temperature limits Fragile n% Humidity limit
8 4 Safety summary Welch Allyn Propaq CS Vital Signs Monitor Keep away from rain Patient connections are Type B The CE Mark and Notified Body Registration Number signify the device has met all essential requirements of European Medical Device Directive 93/42/EEC n NRTL/C Evaluated to CSA and UL Altitude limit The device has met all essential requirements of European Medical Device Directive 93/42/ EEC for a Class 1 product The Canadian Standards Association has evaluated this device according to CSA and Underwriters Laboratory Standard UL Restrictions for use of wireless device in Europe. European Communities Class 2 radio equipment C US This device has been tested and certified by the Canadian Standards Association International to comply with applicable U.S. and Canadian medical safety standards. Apply the NIBP cuff as shown. NIBP cuff sizes: Thigh Large adult Adult Small adult Child Infant Apply the NIBP cuff as shown. Single-use only (not reusable). FCC ID: PGUWA11A07 IC: 4168a-WA11A07 This device complies with FCC and Industry Canada requirements for international radiators ( wireless)
9 5 2 Overview Purpose and scope The Propaq CS Service Manual is intended as a reference for monitor maintenance and repair to the field-replaceable unit (FRU) level ( Field Replaceable Units (FRUs) on page 129). This manual provides the technically qualified service person with troubleshooting information, repair procedures, and calibration and performance verification instructions. A technical overview of the monitor subsystems is provided as an introduction to the device s circuitry and pneumatics. This manual is intended for the technically qualified service person. Service training classes on Welch Allyn products are available. Contact Welch Allyn Technical Service (page ii) for information. Other applicable documents Several other documents are available for the Propaq CS monitor. Refer to those documents for other than maintenance and repair information. Check the Propaq CS Directions For Use for information on other user s documentation. Title Propaq CS Directions For Use, English Products & Accessories Booklet Part Number XX XX Unpacking procedure Use the following guidelines when unpacking the monitor from its shipping carton. 1. Before opening the monitor shipping carton, check it for damage. 2. If damage is apparent, stop unpacking the carton and contact the shipping company for further instructions. If the carton is intact, unpack the monitor. 3. With the monitor out of its carton, check to see that all the items listed on the packing slip (provided with shipment) are in the shipping carton. 4. If an item is missing, first recheck the carton, then check with your receiving department. If necessary, contact Welch Allyn at the address and phone number shown in page ii. Save the shipping carton and packing material for repacking the monitor in case it needs to be sent to a repair center or back to Welch Allyn for service.
10 6 Overview Welch Allyn Propaq CS Vital Signs Monitor Warranty service DO NOT ATTEMPT TO REPAIR the monitor yourself during the warranty period. For service and repair, contact Welch Allyn. See below. Technical support services Welch Allyn offers a wide range of technical support services including: 24-hour telephone support loaner equipment service contracts field replaceable units (FRUs) factory repair For any of these services, contact Welch Allyn Technical Support: USA France (+33) Australia (+61) Latin America (+1) Germany (+49) Singapore (+65) European Call Center (+353) Canada Japan (+81) United Kingdom South Africa (+27) China (+86) Worldwide Internet Access World Wide Web (WWW) URL: World Wide Recommended service intervals At the intervals listed below, check the Propaq CS monitor for normal operation. Interval/Condition Perform Located in this manual Every 6 months to 2 years (according to hospital protocols). Complete risk (leakage) current Safety Check followed by a Functional Verification. Functional verification If battery does not retain a charge. Check battery pack capacity. Troubleshooting Monitor is dropped or suspected of damage or rough handling. Suspected malfunction with all or part of monitoring parameters. Monitor does not pass Functional Verification. Complete Safety Check followed by Functional Verification. Functional Verification of suspected parameter(s). Calibration of monitoring parameter circuits, or repair, followed by Safety Check and Functional Verification. Functional verification Functional verification Functional verification and Calibration WARNING If the monitor is opened for repair or calibration, a dielectric strength test must be completed to ensure the integrity of the patient isolation barrier. The dielectric strength test procedure is provided in Functional verification.
11 Service Manual Overview 7 Identifying Propaq CS Monitor configurations The following tables identify Propaq CS monitor configurations and how they are indicated. The model-option number and serial number are located on the back of the housing. The monitor indicators are located under the handle on the back. Table 1. Propaq Monitor configurations Product (housing) Model number Option Number Parameters included (Acuity option is also available with every model) Propaq CS Monitor 242 ECG, NIBP, 2 Temp, Resp Option, Nurse Call Option, Color Display 244 ECG, NIBP, 2 Temp, 1 IBP, Resp Option, Nurse Call Option, Color Display 246 ECG, NIBP, 2 Temp, 2 IBP, Resp Option, Nurse Call Option, Color Display SpO 2 -Only Module 210 SPO 2 Four Options Available: Nellcor MP-405 (Top level assembly XX) Nellcor MP-203 (Top level assembly XX) Nellcor MP-507, Nell-2 a (Top level assembly XX) Masimo MS3 (Top level assembly XX) Expansion Module See next table a. Nellcor Nell-2 has superceeded MP-507. There are two Acuity Wireless options available: GHz radio card ( ) 2. 5 GHz radio card ( ) Caution The 2.4 GHz and 5 GHz radio cards are not interchangeable. Replacement of the radio card in the wrong configuration will cause permanent damage to the radio card and/or monitor hardware.
12 8 Overview Welch Allyn Propaq CS Vital Signs Monitor Table 2. Expansion module option configurations Option number Printer Mainstream CO 2 Sidestream SpO 2 Top level assembly CO 2 number 221 Yes No No N/A XX 222 No No No Nellcor MP XX 223 Yes No No Nellcor MP XX 223 Yes No No Nellcor MP XX 223 Yes No No Masimo MS XX 223 Yes No No Nellcor MP XX 223 Yes No No Nellcor Nell-2, MP-507 a XX 224 No Yes No Nellcor MP XX 224 No Yes No Masimo MS XX 224 No Yes No Nellcor MP XX 224 No Yes No Nellcor Nell-2, MP-507 a XX 225 Yes Yes No Nellcor MP XX 225 Yes Yes No Masimo MS XX 225 Yes Yes No Nellcor MP XX 225 Yes Yes No Nellcor Nell-2, MP-507 a XX 226 No No Yes Nellcor MP XX 226 No No Yes Masimo MS XX 226 No No Yes Nellcor MP XX 226 No No Yes Nellcor Nell-2, MP-507 a XX 227 Yes No Yes Nellcor MP XX 227 Yes No Yes Masimo MS XX 227 Yes No Yes Nellcor MP XX 227 Yes No Yes Nellcor Nell-2, MP-507 a XX 228 No Yes Yes Nellcor MP XX 228 No Yes Yes Masimo MS XX 228 No Yes Yes Nellcor MP XX 228 No Yes Yes Nellcor Nell-2, MP-507 a XX 229 Yes Yes Yes Nellcor MP XX 229 Yes Yes Yes Masimo MS XX 229 Yes Yes Yes Nellcor MP XX 229 Yes Yes Yes Nellcor Nell-2, MP-507 a XX a. Nellcor Nell-2 has superceeded MP-507.
13 Service Manual Overview 9 Identifying the Acuity Communication options Wireless Acuity option is identified by the yellow antenna cap on the top corner of the monitor. MONITOR DEFIB SYNCHRO! 3A 2AG! EKG x 1000! Hardwired Acuity option is identified by the Acuity connector jack on the monitor right side panel V, 3A Monitor controls Nurse Call option Alarm Light Alarm(s) Off Light Suspend/ Resume Alarm SpO 2 Option Suspends alarm tone for 90 seconds or resumes alarm tone (if active) Start/ Stop NIBP Starts or stops NIBP reading Mainstream CO 2 Option Printer Option Sidestream CO 2 Option Home Returns the display to the Main Menu Printer Buttons Self test and service menus The Propaq CS monitor includes built-in self-tests that verify the integrity of its hardware and software each time you turn it on. If the monitor turns on and displays the Main Menu, all self-tests were passed. If a self-test results in a failure, a message and error code are displayed indicating the failure mode. Refer to Troubleshooting on page 55 and contact Welch Allyn Technical Support for help.
14 10 Overview Welch Allyn Propaq CS Vital Signs Monitor The Propaq CS monitor contains software routines that make the Functional Verification and Calibration procedures quicker and easier. You access these routines through the Service Menus as indicated in each of the procedures. The figure below shows the hierarchy of the Service Menus once you enter the top level Service Menu. The procedures in this manual indicate which buttons to push by separating each button menu name with the (>) character. For example, to access the Service Menu, the procedures would indicate for you to press SETUP > MORE > MORE > SERVICE > YES, which means you press the SETUP button, then the MORE button, then the MORE button, then the SERVICE button, and finally the YES button. Note The figure illustrates the Service Menu functions. Some of these functions are not available if you do not have the appropriate option. service menusservice menus To access the Service Menu, from the Main Menu press: SETUP > MORE > MORE > SERVICE > YES. NIBP TEST IBP TEST SpO2 TEST CO2 TEST MORE PUMP TEST AUTO PUMP NIBP CAL ZERO PREVIOUS MENU GHz radio card only. 2 No function on 5 GHz radio card TEMP TEST CONTROLLER TEST PIXEL TEST MEMORY TEST NET TEST 1, 2 WLAN TEST PCMCIA TEST 1 MORE PREVIOUS MENU LOOP TEST OUT TEST PREVIOUS MENU MAIN CAL MAIN TEST SIDE CAL SIDE TEST PREVIOUS MENU SETTINGS SCREEN CAL SYSTEM MORE KEY 0 KEY 1 KEY 2 KEY 3 KEY 4 NEXT CHANGE ALL ALARM 3 PREVIOUS MENU 3 Software version 3.6x only.
15 Service Manual Overview 11 Service test screens There are two Acuity Wireless options available: GHz radio card ( ) 2. 5 GHz radio card ( ) Caution The 2.4 GHz and 5 GHz radio cards are not interchangeable. Replacement of the radio card in the wrong configuration will cause permanent damage to the radio card and/or monitor hardware. The following service screens illustrate the 2.4 GHz radio card and the 5 GHz radio card diagnostic information. Network Status screen (2.4 GHz radio card) To access this screen, from the Main Menu press SETUP > MORE > MORE > SERVICE > YES > MORE > MORE > RADIO STATUS. NETWORK STATUS NETWORK MONITOR BATTERY: 9.2 VOLTS FIRMWARE VER: V S24 COUNTRY: NET NAME: MONITOR MAC: MONITOR IP: AP MAC: ACUITY IP: INTERNATIONAL MODE 0 com.protocol 12:34:56:78:90: : :34:56:78:90: :12345 PSICP RSSI: RX: TX: 158 ACUITY CONNECTED S 25 (M) D 9 S122 ( 15) mmhg NIBP (M) ( 85) mmhg TEMP T F MCO2 SpO2 % D T2 ΔT BR mmhg 38 Br/m PREVIOUS MENU
16 12 Overview Welch Allyn Propaq CS Vital Signs Monitor Network Monitor screen (2.4 GHz radio card) To access this screen, from the Network Status screen press NETORK MONITOR. (Or from the Main Menu, press SETUP > MORE > MORE > SERVICE > YES > MORE > MORE > RADIO STATUS > NETWORK MONITOR.) NETWORK MONITOR TX PACKETS: RX PACKETS: TX RETRIES: RX CRC ERRS: LOAD LEVELING: AP DROPPED MUS: NETWORK STATUS DIR MBPS BATTERY: 9.2 VOLTS 2 3 UNDIR MBPS ERRORS PERCENT 4 2 LOW RSSI: 1 S 25 (M) D 9 S122 ( 15) mmhg NIBP (M) ( 85) mmhg TEMP T F MCO2 SpO2 % D T2 ΔT BR mmhg 38 Br/m PREVIOUS MENU Network Status screen (5 GHz radio card) To access this screen, from the Main Menu press SETUP > MORE > MORE > SERVICE > YES > MORE > MORE > RADIO. 0 NETWORK STATUS BATTERY: 8.4 VOLTS FIRMWARE VER: NET NAME: MONITOR MAC: MONITOR IP: A0023 pco 99 T1 00:1A:FA:00:01: C PREVIOUS MENU Note Note Before the monitor has made a connection to the network, the fields in the above screen will not be populated. Once the fields are populated, they will not be updated until the monitor s power is cycled. There is no 5 GHz Network Monitor service screen.
17 13 3 Functional verification Introduction Self tests This functional verification procedure helps to confirm the proper operation of the Propaq CS monitor and options. This procedure supports the requirements of routine preventive maintenance. No monitor disassembly is required to perform this procedure. Calibration on page 43 provides the full calibration procedures. Calibration may be required if the monitor fails certain functional tests or after a circuit board is replaced. Monitor disassembly is required for calibration. Always perform this functional verification procedure after performing any calibration. This procedure contains additional tests that are not included in calibration procedures. The monitor Service Menus provide access to internal software routines that are required during the functional verification procedure. Service Menus provide features to test and verify the NIBP (cuff) channel, display, invasive pressure channel, and printer. Refer to Overview on page 5 for information about the Service Menus. Many functions, such as alarms, waveform and scale sizing, and printer control, are software operations. During the monitor s power-up self-test, the integrity of all programming is checked first. If software testing is successful, hardware tests are initiated. If all testing is successful, the monitor is ready for use. (See Screen messages on page 55 for information on error messages.)
18 14 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Required equipment You will need the following equipment to verify that all functions of the monitor operate correctly. All test equipment must be calibrated to function within parameters specified by the manufacturer, and must be traceable to a national calibration standard. Some equipment can be manufactured. See Manufacturable test equipment on page 135 for information on manufacturable test equipment. Description Luer connector, male, for use with 1/8 I.D. tubing (Value Plastics, MTLL230-1) Luer connector, female, for use with 1/8 I.D. tubing (Value Plastics, FTLL230-1) Test water trap, Welch Allyn, /8 inside diameter tubing Flow meter, Cole Parmer E , 200ml/min. or equivalent 0 to 300 mm Hg calibrated digital pressure meter, with inflation squeeze bulb (Netech, Digamano, or equivalent) 50 MHz triggered sweep oscilloscope Variable dc power supply, 0-28 V, 3A with voltage and current metering Patient simulator, Fluke (Dynatech/Nevada) 213A, 214A, 215A, or 217A with IBP, Temperature, and EGG Cable/Leads Adult cuff (provided with monitor); Neonatal cuff #3; 3 cm diameter solid cylinder; solid cylindrical object about the size of an adult s arm Welch Allyn cuff calibration kit, Welch Allyn PN XX Power supply adapter cable, Welch Allyn PN Physio-Control LIFEPAK 5 or LIFEPAK 6s with appropriate Welch Allyn Defib Sync adapter to use as Defib Sync Marker pulse source Propaq ac power adapter (provided with the monitor) Safety analyzer, Fluke (Dynatech/Nevada), 431F-1D or equivalent Rod-L Model M100AVS5 high-voltage potential (hi-pot) tester, or equivalent Static-free work area SpO 2 Simulator, Fluke (Biotek) Index 2 XL/XLFE Test gas source: dry 4% to 10% CO 2, balance air (with flow meter). Gas may be between 4% and 10%, but exact CO 2 concentration must be certified to ±0.01. (Convert percentage to partial pressure (mm Hg) as instructed in Partial pressure of test gas source on page 31.) a Two rubber test tube stoppers, with 1/8 to 1/4 holes drilled through (for CO 2 tests) a. Of the gas tolerance available, usually described as ±0.03% absolute, the container must contain at least 2,000 psi grams of gas, to be within ±0.01% of the certified percentage of gas stated on the tag supplied by the vendor. The actual percentage of gas in the container may vary from lot to lot.
19 Service Manual Functional verification 15 Safety tests The following two safety tests, a risk (leakage) current safety check and a dielectric strength integrity (hi-pot) test, must be performed whenever the monitor has been opened for calibration or repair. Note A hi-pot test is only required if the monitor has been opened. Risk (leakage) current test A risk (leakage) current test must be performed to verify that the patient remains electrically isolated from the power circuits of the monitor. Check leakage currents using a Fluke (Dynatech/Nevada) 431F-1D safety analyzer or its equivalent. The source current should not exceed 10μA rms. The sink current, measured between the isolated patient connections (ECG) and the dc power input connector of the monitor, should not exceed 20μA rms. See the analyzer's operator's manual for the proper safety check procedure. Note Because of the all-insulated construction of the monitor, an Enclosure Leakage Current Test to ground is not necessary. Table 3. Electrical connections for patient risk (leakage) current safety tests Safety test Power adapter Monitor dc input Monitor cable Safety analyzer Source current Plugged into analyzer outlet (power adapter switch on) Connected to power adapter Sink current Not used Connected to ground connector on analyzer RA LA LL C RL RA LA LL C RL RA LA LL C RL RA LA LL C RL
20 16 Functional verification Welch Allyn Propaq CS Vital Signs Monitor Dielectric strength (Hi-Pot) test Because of the close spacings of the monitor's internal components and the critical positioning of the insulation sheet within the monitor, Welch Allyn recommends that a dielectric strength test be performed following any procedure in which the monitor is opened. WARNING The Hi-Pot test is extremely hazardous. Only qualified service personnel should perform this test. Conduct the test only on an insulated table top, away from other people and equipment. Use a Rod-L Model M100AVS5 high-voltage potential tester, or equivalent. Refer to the Rod-L instruction manual for operating information and safety recommendations. 1. Set the parameters of the high voltage tester per the ECG input connector specifications in the table below. Table 4. Summary of connection points and high-voltage test parameters Tester's high-voltage terminal connection ECG Input Connector: all ECG leads connected together Nurse Call Output Connector: Pins 1 and 3 connected together (use XX cable) Tester's grounded return connection DC input connector; all pins connected together DC input connector; all pins connected together High-voltage test parameters Output: 4000 V ac rms Current Limit: 2.5 ma Ramp-up: 8 seconds Dwell: 1 second Output voltage: 1500 V ac rms Output Current Limit: 2.5 ma Ramp-up: 8 seconds Dwell time: 1 second 2. Connect the high-voltage output lead of the tester to all ECG leads, using a dedicated patient cable reserved for use only in such tests. 3. Connect the tester's chassis-connected return lead to the monitor's dc input connector, using a suitable plug. 4. Apply the test voltage for one second. The tester must not indicate dielectric breakdown. WARNING If any dielectric breakdown occurs, do not use the monitor. All internal sheet insulation barriers must be properly installed. Check the monitor to determine the cause of dielectric breakdown; then repair the monitor or return the monitor to Welch Allyn for repair. If the monitor has the Nurse Call Option, continue with steps 5 to 8: 5. Remove the ECG connection from the monitor and the tester s high voltage output lead. 6. Set the parameters of the high-voltage tester per the Nurse Call Output Connector in the table Summary of connection points and high-voltage test parameters on page 16 (be sure to reduce the test voltage). 7. Connect a XX Nurse Call Cable to the Nurse Call Output Connector on the monitor. Connect the open pins 1 and 3 of the cable to the high voltage output lead. 8. Apply the test voltage for one second and check that the tester does not alarm.
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