Preventative Maintenance for Centrifugal Chillers

2026-11-03

1 . Seasonal Start - Up ( approximately April 1 ) a . Meg test motor . b . Start unit – check controls and calibrate . c . Check refrigerant and oil levels , add as required . d . Check operation and refrigerant pressures . e . Make complete operational log and record readings . f . Check starter operation , voltage , and current . g . Check external interlocks . h . Set up operating log with operator , instruct and advise troubleshooting techniques . i . Clean coils on all units j . Change oil on annual schedule k . Change oil filter . 2 . Mid Seasonal Performance Evaluation ( approximately August 1 ) a . Make complete operating log and record proper operating temperatures , pressures , voltages and amperages . b . Check and adjust operating and safety controls . c . Check operation of crankcase heater . d . Check compressor oil level and add as required . e . Check operation of control circuit . f . Check operating log with operator , discuss operation of the machine . g . Check water / air flow of evaporator and condenser . h . Check super heat . i . Check operation of all motors and starters . j . Report to operator any uncorrected deficiencies noted .

Indiana

2026-04-08