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Farmer 400
Fav 700
Fav 900
Air-conditioning / General system
Function
A
General
12.12.2000
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Capitel
Docu-No.
Index
Date
Version
Page
Function
Functional description of refrigerant circuit
The compressor (1) entrains gaseous refrigerant and compresses it.
The condenser (2) liquefies the gaseous refrigerant.
The reservoir (3), also termed "drier", serves as the storage vessel and absorbs any moisture from the
refrigerant.
The expansion valve (10), also termed the injector, is a regulator which injects the optimum volume of
refrigerant into the evaporator.
The refrigerant which is injected in liquid form is evaporated in the evaporator (11). The coldness
generated is directed into the cab on the air current from the fan.
Text-module
Functional description of climate-control system
The air current temperature is selected using potentiometer S044 .
Temperature sensor B046 measures the temperature in the fan's air current.
Temperature sensor B045 measures the temperature in the intake pipe area (danger of icing).
Thermostat A010 swUB to the magnetic clutch Y024 of the AC compressor.
Thermostat A010 interrupts the power supply to the magnetic clutch Y024 if:
Bullet-List
●
temp. sensor B046 indicates the set air current temperature.
or
Bullet-List
●
temp. sensor B045 indicates icing of the intake pipe.
+UB supply to thermostat A010 : from fusebox X050 fan 17 via fan switch S037.
Text-module
System temperature monitor (overheating)
The fuse is fitted at the top of the reservoir for safety reasons. It melts at temperatures above 112
°
C,
and the refrigerant escapes. The reservoir and refrigerant must be replaced.