Inspection template in the LeanSuite app
Last reviewed
Air compressor monthly checklist
A monthly check of an air compressor and the air system around it: how it runs, the filters and condensate drains, the dryer, the safety valve and guards, receivers and pipework, and the hour meter and service date. Its 13 questions are visual checks and readings a maintenance technician or trained operator can take with the unit running. Leaks found here can go straight onto your compressed air leak survey.
A maintenance technician or a trained operator runs it monthly with the unit running. What a failure looks like: a condensate drain stuck shut so water reaches the tools, a dryer in alarm that everyone has learned to ignore, a safety valve painted over, or a service date long past on the controller. Record the hour meter each time so service is kept by hours, not by memory.
What it is for, as built: Monthly check of an air compressor and its air system.
The full question list
The 13 questions in the inspection
Every question is answered Yes, No or N/A. Each No is flagged and asks for a photo and a comment, so the finding arrives with its evidence.
Running checks
- 1The compressor starts and runs normally with no unusual noise or vibration
- 2Pressure and temperature readings are normal
- 3Oil level is correct and the oil is clean
- 4There are no oil or air leaks around the unit
Filters and drains
- 5Intake filters are clean
- 6Condensate drains work and are not blocked
- 7Air dryer is working
Safety and system
- 8The safety valve and pressure gauge are in good condition
- 9Belts and guards are in place and in good condition
- 10Air receivers and pipework are free of corrosion and leaks
- 11The room is clean, ventilated and not used for storage
Records
- 12Hour meter and readings are recorded
- 13Service due date is shown and not overdue
Worked example, illustrative
A filled-in example
One section as it might be filled in on the floor, with every other section of the inspection answered Yes. The place and finding are made up to show how the inspection reads and scores.
Result: fail, 84.6% against a pass mark of 90
- 13 questions, all of them count.
- 2 answered No, so 11 of 13 are Yes: 11 ÷ 13 = 84.6%.
- 84.6% is under 90, so the inspection fails.
What happened next: Maintenance lead raised a work order. The technician replaced the drain valve and reset the dryer within two days.
Scored here as one point per question with N/A left out. In the app each answer carries the points set on the template, so change them after you clone it if your plant weighs some checks more.
Air Compressor Monthly Check
Inspection, monthly
- Compressor ID
- COMP-02
Filters and drains
- Intake filters are cleanYes
- Condensate drains work and are not blockedNo
- Air dryer is workingNo
Comment: Receiver auto drain stuck shut, about a litre of water drained by hand. Dryer showing a high dew point alarm since last week.
Photo attached to each No
When to use it
- Once a month.
- The person responsible for the area or equipment answers each question on the spot.
- Each record starts with: Compressor ID.
How it is scored
The template is built with points per answer and a pass mark of 90. In this library every audit is set to pass at 80 and every inspection at 90. Each submitted inspection shows its score and pass or fail, and every No is flagged with its photo and comment.
Change the points or the pass mark after you clone it. How rules and scoring work.
Read and print
More in maintenance and equipment
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- Gearbox oil level checklist6 questions
FAQ
Air compressor monthly checklist: common questions
Monthly with the unit running is how this check is set. Run an extra one after a service, a belt or filter change, a move to a new room, or a shutdown longer than a week, and whenever operators report wet air, pressure drops or a new noise. In hot months the drains and dryer earn a weekly look, because condensate volume climbs with humidity.
A maintenance technician or a trained operator who knows the normal pressure, temperature and oil level for this unit does it. They should be able to read the controller, find every drain and recognise a dryer alarm. A failed check goes to the maintenance lead, who decides whether the unit keeps running, books the repair and signs the record once it is fixed.
A fail means air quality or safety is in doubt: water reaching tools, a safety valve that may not lift, a missing guard, or a service long overdue. Isolate the unit if a guard or the safety valve is the problem. For drains, dryer or leaks, raise a work order with an owner and a date and tell the users. In this template every No is flagged and asks for a photo and a comment, and an inspection that scores under its pass mark of 90 is a fail.
Record the compressor ID, date, hour meter, pressure and temperature readings, oil level, each No with a photo and the work order that closed it. The hour meter history is what keeps service on hours rather than guesswork, and a run of readings shows a dryer or drain failing before the air gets wet. In LeanSuite each submitted inspection is stored with its score, its pass or fail, and the photo and comment on every No.
13 questions in 4 sections: running checks, filters and drains, safety and system, and records. Every question is answered Yes, No or N/A.
Use this template in LeanSuite
It is ready in the Template Marketplace inside Lean Creator as “Air Compressor Monthly Check”. Clone it into your plant, change any question, then schedule it to a person, role or asset with reminders. Auditors complete it on a phone or tablet, with photo evidence where required.
Not on LeanSuite yet? On a 90-day pilot our team sets up your account and digitizes the forms and checklists you use today, this one included.

