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Manual Reference
CARESCAPE Monitor B650 Technical Manual, Software Version 1, Hardware Version B650-01, Document No. M1165897C, 5th edition, 27 Aug 2013.
Manufacturer Recommendation / AEM Status
The manual lists planned maintenance for the CARESCAPE Monitor B650 every 12 months after installation.
Manufacturer-listed planned maintenance includes:
- Visual inspection
- Electrical safety tests
- Functional check, all steps
- Monitor battery maintenance
- CPU battery replacement every 5 years, or whenever the message “Service Monitor - Replace System Battery” is shown
The manual states that planned maintenance should be carried out annually and warns that failure to implement the recommended maintenance schedule may cause equipment failure and possible health hazards.
Parameter module PM is not fully covered by this monitor manual. The manual points to the Module Frames and Modules Technical Manual for corrective and planned maintenance checkout procedures for acquisition modules, and to the PDM section of that manual for PDM battery maintenance.
AEM note: 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
- Annual planned maintenance for the CARESCAPE Monitor B650 host monitor
- Visual inspection
- Electrical safety testing
- Functional checkout
- Monitor battery maintenance
- CPU battery replacement interval tracking
- CMMS documentation
Required Tools and Equipment
Manufacturer-listed or manual-supported equipment:
- Electrical safety analyzer / leakage current tester equivalent to the manual test circuits
- Ground bond tester, 0–1 ohm
- Safety Test Body Kit, P/N M1155870, or equivalent, for patient leakage testing
- Calibrated test equipment with calibration due dates recorded
- Applicable parameter modules and accessories used with the monitor
- Network-connected accessories as applicable for facility configuration
The manual states to verify test equipment is properly calibrated, maintained, and functioning before testing.
Step-by-Step PM Procedure
1. Confirm Device and Configuration
Action: Confirm the device is a GE Healthcare CARESCAPE Monitor B650. Record asset number, serial number, software version, attached modules, and connected accessories.
Expected outcome: Device identity and configuration are documented before PM work begins.
Why it matters: The monitor PM does not automatically cover all acquisition modules. Module-specific PM may require the Module Frames and Modules Technical Manual.
2. Remove From Patient Use
Action: Verify the monitor is not actively monitoring a patient. Discharge the patient from the monitor if required by facility workflow before service checks.
Expected outcome: The device is safe to inspect and test.
Why it matters: Functional and electrical safety testing should not be performed on a device in active clinical use.
3. Perform Visual Inspection
Action: Inspect the patient monitor and connected peripheral devices for damage. Verify:
- Monitor and peripherals are properly mounted
- Cables are intact and connected to the correct connectors
- Modules are properly connected and locked
- Pivoting module frame is locked
- Battery door is properly locked
- Power cord and plug are undamaged
Expected outcome: No physical damage, loose mounting, damaged cables, unlocked modules, or unsecured battery door are found.
Why it matters: The manufacturer-listed visual inspection includes damage, mounting, cabling, module locking, module frame locking, and battery door locking checks.
4. Check Power Cord and Power Source
Action: Verify the power outlet is properly wired per facility/country electrical code. Inspect the power cord for wear or damage. If damage is suspected, test continuity through each conductor.
Expected outcome: Power source and cord are acceptable for testing and use.
Why it matters: Electrical safety test results can be inaccurate if the test outlet is not properly wired.
5. Perform Ground Integrity Test
Action: Perform protective earth / ground continuity testing using the facility’s electrical safety analyzer or ground bond tester.
Manufacturer-listed limits from the maintenance checkform:
- Ground continuity / protective earth impedance: ≤ 0.1 ohm for equipment without a power supply cord
- Ground continuity / protective earth impedance: ≤ 0.2 ohm for equipment with a power supply cord
Expected outcome: Ground integrity passes the applicable manual limit or facility/NFPA 99 criteria if different.
6. Perform Leakage Current Testing
Action: Perform electrical safety tests according to the manual and facility policy.
Manufacturer-listed leakage limits from the maintenance checkform include:
- Earth leakage current, Normal Condition: ≤ 500 µA / ≤ 300 µA depending on applicable standard
- Earth leakage current, Single Fault Condition: ≤ 1 mA
- Enclosure leakage / touch current, Normal Condition: ≤ 100 µA
- Enclosure leakage / touch current, Single Fault Condition: ≤ 500 µA / ≤ 300 µA depending on applicable standard
- Patient source leakage using test body, Normal Condition: ≤ 10 µA
- Patient source leakage using test body, Single Fault Condition: ≤ 50 µA
- Patient sink leakage using test body: ≤ 50 µA
Expected outcome: All measured leakage values pass the manual-listed or facility-approved limits.
7. Perform Functional Check
Action: Complete the manufacturer-listed functional check steps applicable to the installed configuration.
Manufacturer-listed functional check items include:
- Start-up
- Display
- PSM / PDM test
- E-module test
- Keypad and remote
- Mouse
- Alphanumeric keyboard
- Barcode reader
- MC Network and S/5 Network
- Wireless LAN
- IX printers
- InSite with ExC
- Recorder
- Synchronization connector test
- Verification of the active software version
Expected outcome: All applicable functional checks pass. Mark non-installed options as N/A.
Why it matters: The annual PM calls for functional check section 7.3, all steps.
8. Perform Monitor Battery Maintenance
Action: Perform monitor battery maintenance per section 7.4 of the technical manual. Check battery condition, charging behavior, and battery status indicators. Replace failed or unreliable batteries per facility policy and manufacturer instructions.
Expected outcome: Monitor battery is present, charges correctly, and does not show failure indicators.
Do not overstate: This uploaded manual points to monitor battery maintenance but does not provide PDM battery maintenance details in this section. PDM battery maintenance is referenced to the Module Frames and Modules Technical Manual.
9. Check CPU Battery Replacement Interval
Action: Check maintenance history for CPU battery replacement. Replace the CPU battery every 5 years or when the monitor displays “Service Monitor - Replace System Battery.”
Expected outcome: CPU battery is within interval or replacement is scheduled/completed.
Why it matters: The manual lists CPU battery replacement every 5 years or when the service message appears.
10. Complete PM Documentation
Action: Record visual inspection results, electrical safety results, functional check results, battery maintenance status, calibration due dates for test equipment, and final device disposition.
Expected outcome: PM record supports audit review and service traceability.
Electrical Safety Testing
Document actual measured values.
Ground resistance / protective earth:
Ground resistance measured in ohms. Manual-listed limit is ≤ 0.2 ohm for equipment with a power supply cord, or facility/NFPA 99 criteria if different:
Result =
Pass / Fail =
Earth leakage current:
Normal Condition limit used =
Result =
Single Fault Condition limit used =
Result =
Pass / Fail =
Touch/chassis leakage measured in microamps:
Facility/manual limit used =
Result =
Pass / Fail =
Patient source leakage, if applicable to connected modules:
Normal Condition limit used =
Result =
Single Fault Condition limit used =
Result =
Pass / Fail =
Patient sink leakage, if applicable to connected modules:
Limit used =
Result =
Pass / Fail =
Pass / Fail Criteria
PM Pass Criteria
- Visual inspection passes
- Power cord and plug are intact
- Monitor and accessories are securely mounted
- Modules are connected and locked
- Battery door and pivoting module frame are locked
- Electrical safety testing passes applicable manual/facility limits
- Functional check passes for all installed/applicable features
- Battery maintenance completed
- CPU battery replacement interval reviewed
- No unresolved service messages remain
Remove From Service Criteria
Remove the monitor from service if:
- Physical damage affects safe use
- Power cord, plug, housing, mounting, or module locking is unsafe
- Ground integrity fails
- Leakage current exceeds applicable limit
- Functional check fails
- Battery failure is present and cannot be corrected
- Required module or network function fails for the intended care area
- CPU battery replacement message is present and unresolved
- Any alarm, display, startup, or monitoring function is unreliable
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.