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Manual Reference
Philips IntelliVue Patient Monitor MP40/50 Service Guide, Part Number M8000-9361E / 451261018641.
Manufacturer Recommendation / AEM Status
Manufacturer-listed PM items
The service guide defines preventive maintenance as the tests required to confirm measurement accuracy. For this monitor family, manufacturer-listed preventive maintenance items include NBP performance testing, Microstream CO2 performance testing when equipped, electrical safety testing, configured measurement performance tests, visual inspection, power-on testing, and battery status review.
Manufacturer-listed PM items include:
- NBP performance testing.
- NBP accuracy test.
- NBP leakage test.
- NBP linearity test.
- Valve test.
- Microstream CO2 calibration / performance testing, when equipped with Microstream CO2.
- Barometric pressure check.
- Leakage check.
- Pump check.
- Flow rate check.
- Noise check.
- CO2 gas measurement calibration check.
- Calibration verification.
- CO2 pump / CO2 scrubber replacement, when equipped with applicable Microstream CO2 extension.
- Safety testing.
- System enclosure leakage current.
- Protective earth continuity.
- Patient leakage current.
- Visual test.
- Power on test.
- Battery status review / battery conditioning when prompted.
- Configured measurement performance tests when applicable: temperature, ECG / respiration, invasive pressure, SpO2, mainstream or sidestream CO2, spirometry, cardiac output, BIS, nurse call relay, ECG sync, docking station, VueLink, and IIT / wireless communication.
Manufacturer-listed frequencies
NBP performance tests: once every two years, or more often if specified by local laws.
Microstream CO2 calibration / performance test: once a year, or after 4,000 hours continuous use, and following instrument repairs or replacement of instrument parts.
CO2 pump / CO2 scrubber replacement: once every three years or after 15,000 operating hours.
General performance tests: once every two years, or if the measurement is suspected to be incorrect.
Mainstream CO2 accuracy check: once a year.
Sidestream CO2 accuracy and flow check: once a year.
Safety tests: once every two years and after repairs where the unit has been opened, front and back separated, or after impact damage.
Nurse call relay performance test: once every two years only when in use as part of hospital protocols.
ECG sync performance test: once every two years only when in use as part of hospital protocols.
Battery conditioning: when indicated by the battery status / maintenance prompt.
Post-repair safety inspection requirements
Manufacturer-listed post-repair testing depends on the service event. Repairs where the monitor has been damaged by impact require Power On and Safety test blocks. Repairs where the unit has been opened with the front and back separated require Power On and Safety test blocks. Hardware upgrades where the unit is opened require Power On and Safety test blocks. All other IntelliVue monitoring system repairs require the Power On test block.
Repairs of M3015A require Power On and M3015A tests. Plug-in module disassembly or reassembly requires patient leakage current testing before the module is returned to monitoring use. Reassembled MMS or measurement server extensions require safety and/or performance checks as applicable.
AEM status
If a facility performs this PM at a different interval or changes the listed activities, that should be handled under the facility’s approved AEM program, risk assessment, maintenance history, and applicable regulatory requirements.
What This PM Procedure Covers
This procedure covers visual and power-on inspection, NBP verification, electrical safety testing, battery status check, configured measurement spot checks as applicable, Microstream CO2 checks when equipped, site-used feature checks such as nurse call, ECG sync, docking station, wireless, or VueLink when applicable, and CMMS documentation language.
Required Tools and Equipment
Only use the items applicable to the device configuration.
- Electrical safety analyzer.
- Patient simulator.
- Reference manometer with hand pump and valve, accuracy 0.2% of reading.
- 250 mL ±10% expansion chamber.
- Appropriate NBP tubing.
- Ohmmeter, if testing nurse call relay.
- Electronic flowmeter, Philips M1026-60144, if equipped for CO2 testing.
- Cal 1 gas, Philips 15210-64010, 5% CO2, if equipped for CO2 testing.
- Cal 2 gas, Philips 15210-64020, 10% CO2, if equipped for CO2 testing.
- Cal gas flow regulator, Philips M2267A, if equipped for CO2 testing.
- Cal tube, Philips 13907A, if equipped for CO2 testing.
- Local barometric pressure reference from a reliable source at the same altitude.
- Verification Gas M2506A, if applicable for mainstream / sidestream CO2 verification.
- Gas cylinder regulator M2505A, if applicable for mainstream / sidestream CO2 verification.
- Straight Sample Line M2776A, if applicable for mainstream / sidestream CO2 verification.
- Facility-required cleaning supplies.
- CMMS access or service record.
Step-by-Step PM Procedure
1. Confirm device configuration
Action: Identify whether the monitor is MP40 or MP50 and document installed options: MMS, battery board, internal rack, CO2 extension, nurse call, docking station, wireless, VueLink, or ECG sync.
Expected outcome: PM scope matches the actual device configuration.
Why it matters: The manual-listed PM items vary depending on installed options and hospital use.
2. Perform visual inspection
Action: Inspect the monitor, display, housing, buttons, navigation point, touchscreen if equipped, alarm lamps, speaker openings, labels, connectors, MMS, modules, module rack, cables, power cord, battery door, and accessories.
Expected outcome: No obvious signs of damage, contamination, loose parts, cracked housing, damaged connectors, damaged cords, or unsafe accessories.
Fail condition: Cracked case, damaged power cord, exposed conductors, liquid intrusion, broken patient connection, unreadable safety-critical labeling, loose hardware, or damage that could affect safe use.
3. Power on test
Action: Power on the monitor with the MMS connected. Confirm the monitor completes startup, alarm LEDs test, test sound is heard, screen loads, input devices respond, and an ECG wave appears. A flat line is acceptable if no simulator is attached.
Expected outcome: Monitor boots successfully and displays ECG wave/trace area.
Fail condition: No boot, abnormal rebooting, blank display, missing alarm lamp test, no sound, failed input device, unresolved INOP, or monitor cannot display measurement data.
4. Battery status check, if equipped
Action: Check battery status from the screen or Main Setup > Battery. Confirm both batteries are present if required, charging status is normal, and no battery malfunction, incompatible battery, or battery temperature INOP is present.
Expected outcome: Battery status is normal or documented.
Battery conditioning: Perform battery conditioning only when indicated by the battery status / maintenance prompt. Do not condition batteries on a monitor being used for patient monitoring.
Fail condition: Battery malfunction, incompatible battery, missing required battery, battery temperature warning, battery not charging, leakage, damage, or battery-related INOP that cannot be resolved.
5. NBP performance test
NBP accuracy test
Action: Connect the reference manometer, pump, tubing, NBP connector on the MMS, and 250 mL ±10% expansion chamber. Enter Service Mode, open Setup NBP, select Close Valves: On, raise pressure to 280 mmHg, wait 10 seconds, and compare monitor pressure against the manometer.
Expected outcome: Difference between manometer and displayed value is ≤ 3 mmHg.
Document: x1 = displayed monitor value.
NBP leakage test
Action: With pressure at 280 mmHg, observe pressure for 60 seconds. Calculate leakage value: P1 - P2.
Expected outcome: Leakage value < 6 mmHg.
Document: x2 = leakage value.
NBP linearity test
Action: Reduce pressure to 150 mmHg, wait 10 seconds, and compare displayed value to the manometer.
Expected outcome: Difference is ≤ 3 mmHg.
Document: x3 = displayed monitor value.
Valve test
Action: Raise pressure again to 280 mmHg. Select Close Valves: Off. Wait 5 seconds and document displayed pressure.
Expected outcome: Displayed pressure is < 10 mmHg.
Document: x4 = displayed monitor value.
Fail condition: Any NBP value outside tolerance after setup has been verified. Calibrate per service manual where supported. Remove from service if NBP cannot pass.
6. ECG / respiration performance check
Action: Connect patient simulator to ECG/Resp connector. Set ECG sinus rhythm and HR = 100 bpm. Confirm ECG waveform and heart rate. Then set respiration base impedance 1500 ohm, delta impedance 0.5 ohm, respiration rate 40 rpm.
Expected outcome: ECG HR = 100 bpm ±2 bpm. Respiration = 40 rpm ±2 rpm.
Fail condition: ECG or respiration values outside tolerance, missing waveform, unresolved ECG/RESP equipment malfunction, or unstable readings not caused by setup.
7. Temperature performance check, if used/configured
Action: Connect patient simulator to temperature connector on MMS or measurement server extension. Set simulator to 40 °C or 100 °F.
Expected outcome: 40 °C ±0.2 °C or 100 °F ±0.4 °F.
Fail condition: Temperature outside tolerance after setup and simulator are verified.
8. Invasive pressure performance check, if used/configured
Action: Connect patient simulator to pressure connector. Set simulator to 0 pressure and perform zero calibration. Set static pressure to 200 mmHg.
Expected outcome: Displayed pressure = 200 mmHg ±5 mmHg.
Fail condition: Pressure outside tolerance after setup is verified.
9. SpO2 performance check
Action: Connect an adult SpO2 transducer to the MMS SpO2 connector and perform a basic functional check per manual method.
Expected outcome: SpO2 value on a healthy finger should display between 95% and 100%.
Documentation note: The manual states a functional tester cannot be used to assess pulse oximeter accuracy, but it may be used to demonstrate reproduction of a calibration curve.
Fail condition: No SpO2 reading, unstable reading, sensor/transducer malfunction, or unresolved SpO2 equipment malfunction after sensor/cable substitution.
10. Microstream CO2 performance test, if equipped
Perform these checks in the same session.
Barometric pressure check
Action: In Service Mode, enter Setup CO2. Connect a FilterLine to activate the pump. Compare displayed ambient pressure to a reliable local barometric pressure source at the same altitude.
Expected outcome: Difference < 12 mmHg.
Document: x1 = difference between reference pressure and displayed ambient pressure.
Leakage check
Action: Perform leakage check parts 1 and 2 using the flowmeter and FilterLine setup.
Expected outcome: Part 1 flow decreases to 0–4 mL/min. Part 2 flow decreases to 0–4 mL/min.
Document: x2 and x3.
Pump check
Action: Block FilterLine inlet and observe cell pressure compared with ambient pressure.
Expected outcome: Cell pressure is more than 120 mmHg below ambient pressure.
Document: x4.
Flow rate check
Action: Connect flowmeter to CO2 FilterLine and measure pump flow.
Expected outcome: 50 mL/min ±7.5 mL/min.
Document: x5.
Noise check
Action: Apply 5% calibration gas and observe noise index.
Expected outcome: Noise index < 3 mmHg.
Document: x6.
CO2 gas calibration check
Action: After at least 20 minutes warm-up, apply 5% CO2 gas. Calculate expected value: 0.05 × ambient pressure.
Expected outcome: Displayed value matches calculated value ±2.6 mmHg.
Document: x7.
CO2 calibration verification
Action: Apply 10% CO2 gas. Calculate expected value: 0.1 × ambient pressure. Calculate tolerance: ±0.07 × calculated value.
Expected outcome: Displayed value is within calculated tolerance.
Document: x8.
Fail condition: CO2 value outside tolerance after setup verification, flow cannot be adjusted within tolerance, pump insufficient, leakage unresolved, or measurement extension requires exchange.
11. CO2 pump / scrubber interval check, if equipped
Action: Check CO2 pump, IR source, and last calibration counters in Setup CO2.
Expected outcome: Pump and scrubber are within manufacturer-listed interval or replaced when due.
Manufacturer-listed interval: Replace CO2 pump / CO2 scrubber once every three years or after 15,000 operating hours.
After pump replacement: Reset PumpOpTime. Perform flow check and Store Flow to clear CO2 OCCLUSION INOP.
12. Nurse call relay test, if used by facility protocol
Action: Test only if nurse call is used as part of hospital protocol.
For phone jack type connector, connect an ohmmeter to the relay loop. Confirm relay is open during standard operation and closed during alarm condition.
For flexible nurse call, use the proper cable and verify relay behavior per configuration.
Expected outcome: Relay behavior matches standard operation/alarm condition or site configuration.
Fail condition: Nurse call does not activate during alarm condition, CHECK NURSE CALL RELAY INOP is present, or relay output does not match configuration.
13. ECG sync test, if used by facility protocol
Action: Connect patient simulator to ECG connector and defibrillator to ECG sync output. Set simulator to HR 100 bpm, sinus rhythm. Place defibrillator in simulation/sync mode.
Expected outcome: Marker pulse is displayed before the T-wave begins.
Fail condition: No ECG sync output, marker timing issue, defective cable, or unresolved ECG output fault.
14. Docking station check, if used
Action: Dock monitor, close lever, and confirm docking station power LED and monitor AC power LED illuminate.
Expected outcome: Monitor receives power through docking station.
Fail condition: Docking station does not power monitor, monitor does not dock securely, or network/power through dock fails when required.
15. Wireless / network function check, if used
Action: Confirm monitor network status, central monitoring connection, and wireless adapter function according to facility configuration.
Expected outcome: Monitor is connected and assigned as expected, with no unsupported LAN, no central monitoring, wireless out of range, or duplicate label issue.
Fail condition: Network connection failure, unresolved wireless adapter issue, incorrect label, duplicate label, or inability to connect to central monitoring where required.
Electrical Safety Testing
Perform electrical safety testing according to the facility’s safety program and the service manual’s listed safety test blocks.
Manufacturer-listed safety tests
- System enclosure leakage current.
- Protective earth continuity.
- Patient leakage current.
Manufacturer-listed limits from service guide
System enclosure leakage current, normal condition: expected maximum leakage current ≤ 100 µA.
System enclosure leakage current, single fault / open earth: expected maximum leakage current ≤ 500 µA per IEC 60601-1 or ≤ 300 µA per UL2601-1.
Protective earth continuity: expected maximum impedance = 100 mΩ with mains cable.
Patient leakage current, single fault condition, mains on applied part: expected maximum leakage current = 50 µA at 250 V.
Documentation fields
Ground resistance measured in ohms, expected ≤ 0.1 Ω per manufacturer-listed IEC/UL value, or facility/NFPA 99 criteria if different.
Touch/chassis leakage measured in microamps:
Facility limit used =
Result =
Pass / Fail =
Patient leakage measured in microamps, if applicable:
Facility limit used =
Result =
Pass / Fail =
Pass / Fail Criteria
PM pass criteria
PM passes when visual inspection passes, the monitor powers on normally, alarm indicators and sound function during startup, no unresolved INOPs remain, battery status is acceptable if equipped, electrical safety testing passes using manufacturer-listed or facility-approved limits, configured measurement checks pass where performed, Microstream CO2 checks pass if equipped and due, and site-used features such as nurse call, ECG sync, docking station, wireless, and VueLink pass when applicable.
NBP performance test must pass the following:
- Accuracy difference ≤ 3 mmHg.
- Leakage < 6 mmHg.
- Linearity difference ≤ 3 mmHg.
- Valve test < 10 mmHg.
Remove from service criteria
Remove the monitor from service if electrical safety testing fails, damaged housing or patient-applied connections create a safety risk, the monitor fails power-on testing, alarm lamps or speaker malfunction, NBP fails verification and cannot be corrected, CO2 verification fails and cannot be corrected, any required measurement parameter fails verification, unresolved equipment malfunction INOP remains, battery malfunction or overheating cannot be resolved, nurse call or ECG sync fails where required by facility protocol, or the device has impact damage requiring post-repair safety evaluation before return to service.
Copy/Paste CMMS Work Order Procedure
Use the manufacturer service manual, facility policy, and approved AEM program to determine the final PM interval and return-to-service requirements.