Ventilator Preventive Maintenance Checklist
Free ventilator PM checklist for ICU biomedical engineers. Covers IEC 62353 electrical safety, calibration and NABH annual steps.
Applicable Standards & Compliance
Pro Tips for Ventilator PM
A drifting O2 sensor needs replacement, not recalibration — if it reads <95% at 100% FiO2, the electrochemical cell is depleted
Blow dry medical-grade air through the flow sensor before calibration — even a thin moisture film causes consistent low-volume readings
Block the patient Y-piece and run the ventilator — pressure drop >2 cmH2O/min means a circuit leak, not a ventilator fault
Run battery backup test at the start of PM, not the end — a depleted battery won't recover in time if PM runs long
Photograph the display during POST errors before clearing — many intermittent faults are only captured in the moment
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Ventilator Preventive Maintenance Checklist — Inspection Checklist
Common Failure Signs to Watch For
| Warning Sign | Likely Cause | Action Required |
|---|---|---|
| O2 reading drifts below spec despite calibration | O2 sensor electrochemical cell end-of-life | Replace O2 sensor — do not recalibrate a depleted cell |
| Persistent low-volume alarm with circuit intact | Flow sensor contamination or damage | Clean with dry air; recalibrate; replace if still out of spec |
| False high-pressure alarm with no patient change | Circuit kink, water trap blockage or expiratory valve debris | Inspect circuit; drain traps; clean expiratory valve |
| Ventilator fails POST on startup | Firmware fault, RAM error or hardware failure | Do not use clinically; note exact error code; contact OEM |
| Battery runtime <20 min on backup | Internal battery capacity degraded | Load test; replace if runtime <80% of rated capacity |
Maintenance Notes & Sign-Off
Ventilator Maintenance Schedule
Daily
4 tasks- Pre-use visual inspection by nursing staff before patient connection
- Verify alarm limits match patient's current ventilator order
- Confirm O2 supply pressure is adequate
- Ensure breathing circuit is intact and correctly assembled
Weekly
4 tasks- Clean expiratory cassette and inspect for wear
- Check and drain all water traps
- Inspect bacteria filter; replace if pressure drop is elevated
- Verify humidifier function and water level
Monthly
4 tasks- Full calibration check by biomedical engineer (Vt, FiO2, pressure, rate)
- Battery load test — disconnect mains and time backup duration
- Flow sensor inspection and cleaning
- Electrical safety spot-check (leakage current)
Quarterly
4 tasks- Full IEC 62353 electrical safety test — all leakage and earth resistance values
- Sensor verification against calibrated references
- Internal component inspection (filters, valves, seals)
- Comprehensive alarm system test across all modes
Half-Yearly
3 tasks- Performance certification against OEM specifications
- Consumable replacement schedule review
- OEM service bulletin review and implementation
Annual
5 tasks- Full PM certification — issue signed service report
- Calibration using NIST-traceable reference instruments
- O2 sensor replacement if 12-month OEM interval applies
- Complete IEC 62353 electrical safety report
- NABH equipment maintenance record update
Frequently Asked Questions
A ventilator PM checklist covers visual inspection, functional testing (Vt ±10%, FiO2 ±3%, PEEP ±2 cmH2O, alarms), calibration against NIST-traceable references, IEC 62353 electrical safety testing, cleaning SOP, and consumable replacement (O2 sensor, bacteria filter, battery).
Monthly calibration by biomedical engineer, quarterly full electrical safety testing, and annual PM certification per TJC EC.02.04.01 and NABH equipment maintenance requirements.
Certified biomedical engineers perform all PM tasks. Pre-use daily checks (visual, alarm verification, O2 supply) are performed by clinical nursing staff under biomedical department oversight.
Per IEC 62353: chassis leakage <100 µA, patient leakage <10 µA (normal condition), protective earth resistance <0.2 Ω.
Calibration drift in Vt and FiO2 can cause under/over-ventilation. Skipping PM also triggers TJC EC.02.04.01 non-compliance and NABH survey findings.