A nitrogen generator 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 nitrogen generator fails. This page gives the schedule used in the PlantOps360 task library for nitrogen generator (psa / membrane), which follows common industry practice for general-purpose equipment. It is also searched for as PSA nitrogen plant, nitrogen plant, N2 generator, membrane nitrogen.
The maker’s manual and your site safety procedures always come first where they differ. Intervals set by law differ by state.
Nitrogen generator preventive maintenance schedule and checklist
| How often | Task | Estimated time |
|---|---|---|
| Daily | Check purity, flow and pressure readings and alarms | 3 min |
| Weekly | Drain pre-filters; check purge and switching valve operation | 10 min |
| Monthly | Check oxygen analyser reading against a reference gas | 20 min |
| Quarterly | Check solenoid valves and silencers; check compressed air quality at inlet | 30 min |
| Half-yearly | Replace pre-filter and coalescing filter elements | 60 min |
| Annual | Service valves; check carbon molecular sieve performance; calibrate analyser | 180 min |
Nitrogen generator maintenance frequency and yearly workload
At the estimated times, one nitrogen generator needs about 38 hours of preventive maintenance a year. The biggest single job is “Service valves; check carbon molecular sieve performance; calibrate analyser” at 180 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 | 3 min | 18.3 h |
| Weekly | 1 | 10 min | 8.7 h |
| Monthly | 1 | 20 min | 4.0 h |
| Quarterly | 1 | 30 min | 2.0 h |
| Half-yearly | 1 | 60 min | 2.0 h |
| Annual | 1 | 180 min | 3.0 h |
What goes wrong on a nitrogen generator without preventive maintenance
- Carbon molecular sieve contamination
- Switching valve wear
- Pre-filter saturation
- Oxygen analyser drift
What to watch between services
- Nitrogen purity and flow
- Purge and switching valves
- Analyser against a reference
Safety and statutory notes for nitrogen generator maintenance
Nitrogen displaces oxygen. Keep oxygen monitoring in confined or enclosed areas, and do not rely on the generator’s analyser alone for safety.
Where a nitrogen generator 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 automotive plants · maintenance software for automotive
- 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 chemical, fertiliser and petrochemical plants · maintenance software for chemical
- Preventive maintenance schedule for food, dairy and beverage plants · maintenance software for food processing · maintenance software for dairy
- Preventive maintenance schedule for agro, grain, edible oil and sugar plants · maintenance software for sugar and distilleries
- Preventive maintenance schedule for fmcg and consumer goods plants · maintenance software for fmcg
- Preventive maintenance schedule for packaging, paper and printing plants · maintenance software for packaging · maintenance software for paper and pulp
- Preventive maintenance schedule for steel, foundry, forging and metal plants · maintenance software for steel and metals
- Preventive maintenance schedule for oil, gas and refinery facilities · maintenance software for oil and gas
Related equipment maintenance schedules
- Air compressor preventive maintenance schedule
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- Oil-free screw / scroll compressor preventive maintenance schedule
- Centrifugal compressor preventive maintenance schedule
- Compressed air dryer (refrigerated) preventive maintenance schedule
- Compressed air dryer (desiccant) preventive maintenance schedule
- Compressed air filters, receivers preventive maintenance schedule
Browse the full list of equipment preventive maintenance schedules (317 types).
Run this nitrogen generator 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 nitrogen generator be serviced?
In our schedule a nitrogen generator has 6 tasks: 1 daily, 1 weekly, 1 monthly, 1 quarterly, 1 half-yearly, 1 annual. The biggest job is “Service valves; check carbon molecular sieve performance; calibrate analyser”, which is done annual. Always follow the maker’s manual where it gives a different interval.
What is included in nitrogen generator preventive maintenance?
It covers routine checks and jobs such as “Check purity, flow and pressure readings and alarms”, “Drain pre-filters; check purge and switching valve operation”, “Check oxygen analyser reading against a reference gas”, up to the annual overhaul or inspection. The full list with times is in the table above.
How many hours of maintenance does a nitrogen generator need per year?
About 38 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 nitrogen generator 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.