Webasto CC4E - 2 General Description; Roof-Top Air-Conditioner Unit

Roof-top air-conditioning system CC4E Webasto Thermosysteme
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2. GENERAL DESCRIPTION
The roof-top air-conditioning system CC4E (1) contains all the documents required for operation. Electric
power is supplied by the on-board vehicle supply via cables (2). The system is designed for operation with
24 V.
The roof-top air-conditioning system CC4E is designed to cool / air-condition the driver’s cabs of heavy-
goods vehicles, agricultural machines, earth-moving machines, airport service vehicles, municipal service
vehicles and the driver’s area in buses.
The system is prefilled with refrigerant (R134a) and need only be connected to the on-board power supply
when installed.
2.1. Roof-top air-conditioner unit
The roof-top unit is shown in Fig. 2.2.
It comprises:
– Hood (1) as external contour element, with openings and protective grilles for air inlet and outlet.
– Baseplate (8) as the load-bearing structural element.
The following are integrated into the baseplate:
– Radial fan (5)
– Receiver-drier (13) with viewglass (14) and pressure switch (15)
– Condenser (3)
– Evaporator (6) with mist separator (7)
– Expansion valve (11)
– Anti-icing switch (12)
– Screw connections (9, 10)
– Relay (16) and holder (17) for blade-type fuses
– Cable harness with grommet (26)
– Axial fan (4)
– Electric motor (28)
– Compressor (27)
– Refrigerant hoses (29/30)
– Connecting pins (+/-) (31)
Fig. 2.1