Field Resource
Preventive Maintenance Checklist
Field-tested preventive tasks for industrial compressor stations. Mark off tasks as you go. Your progress is stored locally in the browser.
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Daily checks
Log discharge pressure, suction pressure, and inter-stage temperatures.
Check oil level in main lube reservoir; top up only with approved grade.
Inspect oil cooler and inter-coolers for leaks or fouling.
Verify control panel alarms — clear any active warnings.
Listen for unusual noise from gearbox, bearings, or seals.
Weekly checks
Drain condensate from after-cooler, separators, and air receivers.
Walk the air distribution loop with an ultrasonic leak detector — log finds.
Record vibration baselines at each bearing housing (handheld is fine).
Verify cooling water flow, temperature, and pressure to all stages.
Monthly checks
Sample lube oil — check for water, particulates, viscosity drift.
Inspect inlet guide vanes and unloader valve actuation through full range.
Clean inlet air filter; replace if differential pressure exceeds OEM limit.
Verify safety relief valve set pressure and lift cleanly (with isolation).
Check coupling alignment between motor and compressor (cold conditions).
Quarterly checks
Inspect impeller leading edges via borescope for erosion or buildup.
Calibrate pressure transmitters and temperature RTDs against reference.
Test surge protection logic and anti-surge valve stroke.
Functional test of all instrumented shutdowns (e.g. high vibration trip).
Annual checks
Replace bearings on a condition-based schedule (or per OEM hours).
Replace mechanical seals and seal oil filters.
Full thermography survey of motor, gearbox, bearings, coolers.
Hot alignment check after thermal stabilization.
Re-balance rotor if vibration trend exceeds ISO 10816 zone B.
Audit control panel firmware versions; back up logic and alarm configs.
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