2.4 Automatic regulation system
Reference Name
3 Cooling fan
9 Hot gas bypass valve
12 Maximum pressure switch
13 Fan control switch
Description
The condenser pressure must be kept as constant as possible to obtain stable operation. Fan control switch
therefore stops and starts the cooling fan (3).
If, under partial or no load, the evaporator pressure drops below a certain level, the hot gas bypass valve
opens and hot, high-pressure gas is fed to the evaporator circuit to prevent the evaporator pressure from
dropping any further.
2.5 Electrical system
Description
The fan control switch starts the fan motor as soon as the condenser pressure reaches the upper set point of
the switch and will stop the fan motor when the condenser pressure decreases to its lower set point.
Instruction book
12 2920 7112 50
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