AGL_HA_ST_Discus_A2L_A1_EN_Rev00 33
7.6 High discharge temperatures
The limit is 120 °C measured on the discharge line a few centimetres from the service valve.
Symptoms of high discharge temperatures are cutting-out on the high-pressure switch (dirty
condenser), oil carbonisation, black oil and acid formation. Inadequate lubrication is the result. The
condenser should be cleaned regularly. The evaporating temperature should not be allowed to fall
below the application limit of the compressor.
7.7 Motor burnout due to undersized contactors
If contactors are undersized the contacts can weld. Complete motor burnout on all three phases
despite the presence of a functioning protection system can be the result. If the application point of
a compressor is changed the contactor sizing should be rechecked.
7.8 Motor burnout due to by-passed or disconnected protectors
If large sections of the windings are burned out, it must be assumed that the protector was either not
connected or by-passed.
8 Dismantling & disposal
Removing oil and refrigerant:
Do not disperse refrigerant in the environment.
Use the correct equipment and method of removal.
Dispose of oil and refrigerant in compliance with national legislation and
regulations.
Dispose of compressor in compliance with national legislation and regulations.
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