An inlet screens, grit chamber 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 inlet screens, grit chamber fails. This page gives the schedule used in the PlantOps360 task library for inlet screens, grit chamber (, aeration and sludge scrapers (stp / wtp), which follows common industry practice for general-purpose equipment. It is also searched for as bar screen, fine screen, grit chamber, aerator.
The maker’s manual and your site safety procedures always come first where they differ. Intervals set by law differ by state.
Inlet screens, grit chamber preventive maintenance schedule and checklist
| How often | Task | Estimated time |
|---|---|---|
| Daily | Check screen operation and screenings removal; check aerators and scrapers | 10 min |
| Weekly | Check aerator gearbox oil and diffuser pattern; clean the weirs | 20 min |
| Monthly | Check scraper drives, chains and bearings; check DO and settleability | 45 min |
| Quarterly | Check screen rakes and chains; check blower and air diffusers | 90 min |
| Half-yearly | Lubricate and check the clarifier bridge drive and support bearings; check for corrosion | 150 min |
| Annual | Annual drain and inspection of the tank and mechanical parts | 360 min |
Inlet screens, grit chamber maintenance frequency and yearly workload
At the estimated times, one inlet screens, grit chamber needs about 104 hours of preventive maintenance a year. The biggest single job is “Annual drain and inspection of the tank and mechanical parts” 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 | 150 min | 5.0 h |
| Annual | 1 | 360 min | 6.0 h |
What goes wrong on an inlet screens, grit chamber without preventive maintenance
- Screen blinding and jams
- Aerator gearbox and diffuser faults
- Scraper chain and bearing wear
- Grit pump wear
What to watch between services
- Screening removal
- Diffuser pattern and gearbox oil
- Scraper drives
Safety and statutory notes for inlet screens, grit chamber maintenance
Open channels and tanks are drowning and gas hazards. Use fall protection and gas testing.
Where an inlet screens, grit chamber 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 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 packaging, paper and printing plants · maintenance software for packaging · maintenance software for paper and pulp
- Preventive maintenance schedule for textile and garment mills · maintenance software for textile
- Preventive maintenance schedule for water and wastewater utilities
- Preventive maintenance schedule for hospitals and healthcare facilities
- Preventive maintenance schedule for hotels, malls, offices and campuses
Related equipment maintenance schedules
- Reverse osmosis plant preventive maintenance schedule
- Demineralisation plant preventive maintenance schedule
- Water softener and pressure filters preventive maintenance schedule
- Effluent treatment plant preventive maintenance schedule
- Sewage treatment plant preventive maintenance schedule
- Clarifier / thickener preventive maintenance schedule
- Chlorination, UV preventive maintenance schedule
- Raw water / sewage pumping station preventive maintenance schedule
Browse the full list of equipment preventive maintenance schedules (317 types).
Run this inlet screens, grit chamber 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 inlet screens, grit chamber be serviced?
In our schedule an inlet screens, grit chamber has 6 tasks: 1 daily, 1 weekly, 1 monthly, 1 quarterly, 1 half-yearly, 1 annual. The biggest job is “Annual drain and inspection of the tank and mechanical parts”, which is done annual. Always follow the maker’s manual where it gives a different interval.
What is included in inlet screens, grit chamber preventive maintenance?
It covers routine checks and jobs such as “Check screen operation and screenings removal; check aerators and scrapers”, “Check aerator gearbox oil and diffuser pattern; clean the weirs”, “Check scraper drives, chains and bearings; check DO and settleability”, up to the annual overhaul or inspection. The full list with times is in the table above.
How many hours of maintenance does an inlet screens, grit chamber need per year?
About 104 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 inlet screens, grit chamber 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.