BOCK FK40 Seroes - Compressor Defects

Compressor defects
Compressor defects
Compressor defects may have various causes. The table below is meant to aid you while analyzing
the cause of the breakdown by means of the defective compressor parts found. Thus, the specific
remedying of the cause of the breakdown is facilitated.
Compressor part
Possible causes
Symptom
Remedy
Valve plates
Shaft seal
leaking
Oil pump
Bearings
Pistos/
Connecting rods
Copper plating
Formation of oil-carbon
- Liquid shocks because of
liquid refrigerant or oil
- Overheating of compressor
- Lack of oil
- Standstill time too long
- Dirt in the system
- Moisture in the system
-
Too frequent starting of the compressor
- Overheating of compressor
- Belts vibrating excessively
- Aligment of compressor
and motor incorrect
- Lack of oil
- Dirt in the system
- Moisture in the system
- Overheating of compressor
- Lack of oil
- Dirt in the system
- Moisture in the system
- Overheating of compressor
- Overloading of compressor
- Lack of oil
- Dirt in the system
- Moisture in the system
- Overheating of compressor
- Moisture in the system
- Acid formation in the system
- Overheating of compressor
Liquid shocks:
- Check, adjust expansion valve,
replace it, if necessary; check
refrigerant charge
- Check evaporator fan
- In case the evoporator is iced-up:
Check the dimensioning of piping
(gas velocity).
Overheating of compressor (Heat
protection thermostat switches off):
- Check the operating conditions
Lack of oil:
- Dirt in the system: Change oil,
clean the system; install a suction
line filter, if necessary.
Moisture in the system / Acid
formation in the system:
- Dry the system through changing
refrigerant and oil, replace the drier;
install a suction line filter, if necessary.
Frequent starting and stopping of compressor:
- Overloading of compressor
Compare the operating
conditions with the application limits
-Remove defects in belting
09608-09.03-DGbFEI
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