Clean A/C System
Ensure the A/C system is clean – closed loop refrigerant flushing is recommended. If chemical flushing is used, all chemical flushing agents must be removed from the system.
Oil Balance System
Oil balance system – use the correct type and amount of refrigerant lubricant.
Service suction screen installation – prevents system debris from damaging new compressor.
Evacuation & Charging
Accurate evacuation and charging – new systems have charge weights of +/- one ounce.
Leak check entire air conditioning system – replacing compressor may not correct the system leak that caused previous compressor failure.
Check cycle switch performance – improper operating switch, not shut off as specified, will cause repeat failure.
Confirm OEM manufacturer air conditioning system performance – the compressor is not the only contributor to air conditioning performance.
Turn the compressor shaft at least 4 times, prior to installation on the vehicle – if unable to rotate by hand, a turning tool or spanner wrench must be used. Do not use a socket directly on the shaft nut or bolt.
Replace non-flushable components – parallel flow condensers and hose assemblies with mufflers after a catastrophic compressor failure.
Check voltage to coil – especially if previous compressor experienced clutch failure.