Every device has its own OEM PM procedure — and you should follow it. But across thousands of PMs, the same five-phase workflow holds up: visual, electrical, functional, calibration, documentation.
This checklist works as a baseline you can adapt per device family. Print it, save it in your CMMS, or load it as a template in your report tool.
1. Visual and physical inspection
- Housing intact — no cracks, missing panels, sharp edges
- Labels legible — model, serial, asset tag, recall stickers
- Power cord and strain reliefs in good condition
- Cables and connectors free of fraying, kinking, exposed conductors
- Accessories present and matched to the device (correct cuffs, leads, probes)
- Wheels, brakes, mounting hardware secure
- Filters, batteries, and consumables within service life
2. Electrical safety testing
Per IEC 60601-1 / NFPA 99, using a calibrated electrical safety analyzer (e.g., Fluke ESA620, Rigel 288+). Log the analyzer model and calibration date.
- Ground wire resistance — typically ≤ 0.2 Ω (verify per OEM)
- Chassis leakage current — typically ≤ 100 µA normal condition (verify per device class)
- Patient applied part leakage — per device classification (Type B, BF, CF)
- Insulation resistance where applicable
3. Functional / performance testing
This is the device-specific phase. Reference the OEM service manual and record actual measured values, not just pass/fail.
- Power-on self-test passes with no error codes
- All modules / channels initialize (ECG, SpO2, NIBP, etc. for monitors)
- Alarms audible at minimum required volume (≥ 45–60 dB depending on device class)
- Battery capacity ≥ OEM minimum runtime
- Device performance verified against a calibrated reference (test lung, simulator, analyzer)
- Touchscreens, controls, and indicators all functional
4. Calibration and verification
- Calibration verified per OEM (intervals and tolerances)
- Calibration adjustments documented with before / after values
- Test equipment calibration date logged on the report
- Software / firmware version recorded; updates applied if required
5. Cleaning and reassembly
- Exterior cleaned with hospital-approved disinfectant per OEM IFU
- Internal cleaning per OEM (fans, filters, sensors)
- Reassembled with correct torque on fasteners where specified
- Accessories reattached and inventoried
6. Documentation and return to service
- Reason for service: scheduled PM
- Findings logged with measured values
- Parts replaced with PN and lot number
- Test equipment IDs and calibration dates logged
- Outcome: returned to service / removed from service
- Next PM date set per program (OEM or AEM strategy)
- PM sticker applied if used by your facility
Adapting the checklist per device
Pull the OEM PM procedure for each device family and overlay it onto this five-phase structure. A defibrillator PM adds discharge energy verification; an infusion pump PM adds flow accuracy and occlusion alarm testing; an anesthesia machine PM adds gas calibration and leak tests.
The structure stays the same. The specifics change.