A cleanroom AHU, HEPA filters preventive maintenance schedule lists the checks and jobs done on the equipment at fixed intervals, how long each takes, and in what order of frequency, so problems are found before the cleanroom AHU, HEPA filters fails. This page gives the schedule used in the PlantOps360 task library for cleanroom AHU, HEPA filters (and pressure monitoring), which follows common industry practice for general-purpose equipment. It is also searched for as cleanroom, HEPA filter, clean room AHU, laminar airflow.
The maker’s manual and your site safety procedures always come first where they differ. Intervals set by law differ by state.
Cleanroom AHU, HEPA filters preventive maintenance schedule and checklist
| How often | Task | Estimated time |
|---|---|---|
| Daily | Record differential pressures between rooms and across filters; check temperature and humidity; escalate excursions | 10 min |
| Weekly | Check alarm limits and pressure gauges; check door interlocks and pass boxes | 20 min |
| Monthly | Check AHU belts, bearings and dampers; change pre-filters as per pressure drop | 45 min |
| Quarterly | Check particle count monitoring and settle plates results; check HEPA face for damage | 90 min |
| Half-yearly | HEPA filter integrity (DOP / PAO) test for Grade A and B areas; air velocity and recovery tests | 180 min |
| Annual | HEPA integrity test for Grade C and D; room classification as per ISO 14644 and replace filters as needed | 360 min |
Cleanroom AHU, HEPA filters maintenance frequency and yearly workload
At the estimated times, one cleanroom AHU, HEPA filters needs about 105 hours of preventive maintenance a year. The biggest single job is “HEPA integrity test for Grade C and D; room classification as per ISO 14644 and replace filters as needed” at 360 minutes, done annual. Multiply by the number of units you have to see the workload for your plant.
| Frequency | Tasks | Time per round | Hours per year |
|---|---|---|---|
| Daily | 1 | 10 min | 60.8 h |
| Weekly | 1 | 20 min | 17.3 h |
| Monthly | 1 | 45 min | 9.0 h |
| Quarterly | 1 | 90 min | 6.0 h |
| Half-yearly | 1 | 180 min | 6.0 h |
| Annual | 1 | 360 min | 6.0 h |
What goes wrong on a cleanroom AHU, HEPA filters without preventive maintenance
- HEPA filter leaks
- Pre-filter loading
- Pressure cascade drifting
- Fan and damper faults
What to watch between services
- Room differential pressures
- Filter differential pressure
- Particle count results
Safety and statutory notes for cleanroom AHU, HEPA filters maintenance
Requalification and filter integrity tests follow your quality system. Record every filter change.
Where a cleanroom AHU, HEPA filters preventive maintenance schedule is used
This equipment is used in the industries below. Each link opens the preventive maintenance schedule guide for that industry, and the maintenance software page where we have one.
- Preventive maintenance schedule for electronics manufacturing plants · maintenance software for electronics
- Preventive maintenance schedule for pharmaceutical plants · maintenance software for pharmaceutical · maintenance software for api bulk drugs
- Preventive maintenance schedule for hospitals and healthcare facilities
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Browse the full list of equipment preventive maintenance schedules (317 types).
Run this cleanroom AHU, HEPA filters schedule in maintenance software
In preventive maintenance software, each row above becomes a recurring task on the asset with its checklist, time estimate and parts. Tasks can be triggered by calendar date, running hours, meter readings or production cycles, each completed task is recorded with the person and date, and a failed check can open a work order. For the method behind it, read the guide to the preventive maintenance schedule, or use the free generator to get a 12-month plan for your whole equipment list.
Build my preventive maintenance schedule (free Excel)
Frequently asked questions
How often should a cleanroom AHU, HEPA filters be serviced?
In our schedule a cleanroom AHU, HEPA filters has 6 tasks: 1 daily, 1 weekly, 1 monthly, 1 quarterly, 1 half-yearly, 1 annual. The biggest job is “HEPA integrity test for Grade C and D; room classification as per ISO 14644 and replace filters as needed”, which is done annual. Always follow the maker’s manual where it gives a different interval.
What is included in cleanroom AHU, HEPA filters preventive maintenance?
It covers routine checks and jobs such as “Record differential pressures between rooms and across filters; check temperature and…”, “Check alarm limits and pressure gauges; check door interlocks and pass boxes”, “Check AHU belts, bearings and dampers; change pre-filters as per pressure drop”, up to the annual overhaul or inspection. The full list with times is in the table above.
How many hours of maintenance does a cleanroom AHU, HEPA filters need per year?
About 105 hours per unit per year at the estimated times in our library, including the daily checks done every day. Use it to plan workload, not as a benchmark.
Is there a free cleanroom AHU, HEPA filters maintenance checklist?
Yes. The table on this page is a ready checklist. The free preventive maintenance schedule generator turns it into a 12-month Excel schedule for your list of equipment, with monthly workload hours.