An air-operated diaphragm pump 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 air-operated diaphragm pump fails. This page gives the schedule used in the PlantOps360 task library for air-operated diaphragm pump (aodd), which follows common industry practice for general-purpose equipment. It is also searched for as diaphragm pump, double diaphragm pump, chemical transfer pump, Wilden pump.
The maker’s manual and your site safety procedures always come first where they differ. Intervals set by law differ by state.
Air-operated diaphragm pump preventive maintenance schedule and checklist
| How often | Task | Estimated time |
|---|---|---|
| Daily | Check air supply pressure, filter-regulator and for leaks at manifold and clamps | 3 min |
| Daily | Check for abnormal stroke rate, pulsation or product in the air exhaust (diaphragm failure) | 3 min |
| Weekly | Check suction and discharge flange clamps and fasteners; drain air filter bowl | 10 min |
| Monthly | Fill air lubricator (if fitted); inspect air valve and muffler | 15 min |
| Quarterly | Inspect check valves, balls and seats for wear or sticking | 30 min |
| Half-yearly | Replace diaphragms preventively (sooner in severe service); inspect shaft and O-rings | 45 min |
| Annual | Rebuild air valve and wet end with the OEM service kit | 120 min |
Air-operated diaphragm pump maintenance frequency and yearly workload
At the estimated times, one air-operated diaphragm pump needs about 54 hours of preventive maintenance a year. The biggest single job is “Rebuild air valve and wet end with the OEM service kit” at 120 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 | 2 | 6 min | 36.5 h |
| Weekly | 1 | 10 min | 8.7 h |
| Monthly | 1 | 15 min | 3.0 h |
| Quarterly | 1 | 30 min | 2.0 h |
| Half-yearly | 1 | 45 min | 1.5 h |
| Annual | 1 | 120 min | 2.0 h |
What goes wrong on an air-operated diaphragm pump without preventive maintenance
- Ruptured diaphragm
- Worn or sticking air valve
- Check ball and seat wear
- Loose clamps leaking at the manifold
What to watch between services
- Air supply pressure and filter-regulator condition
- Stroke rate against normal
- Leaks at clamps and flanges
Safety and statutory notes for air-operated diaphragm pump maintenance
A diaphragm failure can send product into the air exhaust. Pipe the exhaust safely when the fluid is hazardous.
Where an air-operated diaphragm pump 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 engineering and fabrication shops
- 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 plastics, rubber and polymer plants · maintenance software for plastics · maintenance software for tyre and rubber
- Preventive maintenance schedule for textile and garment mills · maintenance software for textile
- Preventive maintenance schedule for steel, foundry, forging and metal plants · maintenance software for steel and metals
- Preventive maintenance schedule for cement, glass, ceramics and building materials plants · maintenance software for cement
- Preventive maintenance schedule for mines and mineral processing plants · maintenance software for mining
- Preventive maintenance schedule for oil, gas and refinery facilities · maintenance software for oil and gas
- Preventive maintenance schedule for thermal and hydro power plants · maintenance software for power plants
- Preventive maintenance schedule for water and wastewater utilities
Related equipment maintenance schedules
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- Gear pump preventive maintenance schedule
- Screw / progressive cavity pump preventive maintenance schedule
- Metering / dosing pump preventive maintenance schedule
- High-pressure reciprocating preventive maintenance schedule
- Magnetic-drive pump preventive maintenance schedule
Browse the full list of equipment preventive maintenance schedules (317 types).
Run this air-operated diaphragm pump 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 an air-operated diaphragm pump be serviced?
In our schedule an air-operated diaphragm pump has 7 tasks: 2 daily, 1 weekly, 1 monthly, 1 quarterly, 1 half-yearly, 1 annual. The biggest job is “Rebuild air valve and wet end with the OEM service kit”, which is done annual. Always follow the maker’s manual where it gives a different interval.
What is included in air-operated diaphragm pump preventive maintenance?
It covers routine checks and jobs such as “Check air supply pressure, filter-regulator and for leaks at manifold and clamps”, “Check for abnormal stroke rate, pulsation or product in the air exhaust (diaphragm…”, “Check suction and discharge flange clamps and fasteners; drain air filter bowl”, up to the annual overhaul or inspection. The full list with times is in the table above.
How many hours of maintenance does an air-operated diaphragm pump need per year?
About 54 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 air-operated diaphragm pump 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.