Working area
See diagram page 76
Time conditions
Minimum time from start to stop to start is 20 min.
Compressor heater
The compressor heater is active when relay (K4) on the
base card is in unaffected mode.
When the compressor is inactive the compressor heater
is always active.
Expansion valve
Check that overheating occurs by measuring the vapour
temperature with a manometer and the suction gas
temperature with a service thermometer. The suction
gas temperature is measured on the suction pipe at the
entrance to the compressor.
Overheating is shown in the table below and must be
checked when the temperature of the heating medium
flow is 30 - 55 °C and the brine in is -5 - +15 °C.
superheatF1245
4 - 6 °C5 kW
4 - 6 °C6 kW
4 - 6 °C8 kW
4 - 6 °C10 kW
4 - 6 °C12 kW
19Chapter 4 | Cooling circuitF1245
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