Webasto CC8 - Page 47

6 Maintenance Roof-top air-conditioning system CC8
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CAUTION
A jet of air or water must never be aimed directly towards the fins, otherwise they may
be damaged!
5. The receiver-drier must be replaced at least once a year and whenever work is performed on the refrigerant circuit.
CAUTION
Refrigerant must never be discharged into the atmosphere (refer to Section 8 of the
regulation dated 6 May 1991 banning the use of CFCs and halones).
6.4 Maintenance and service checklist
Abbreviations: m – monthly, a – yearly (a – every six months if operated throughout the year)
6.5 Inspections before repair
In order to avoid unnecessary disassembly or duplication of work, the overall condition of the air-conditioning system
must be checked before starting any repairs.
Visual inspection
1. Outer condition of roof-top unit:
– Hood without cracks and no damage to paint finish
– Air inlets and outlets clean and undamaged
– Attachment points secure and without corrosion
– Hose and wiring connections serviceable
– Openings in metal undamaged.
System component Maintenance task Frequency
m 6m a
Refrigerant circuit
– Hoses
– Connections
– Refrigerant quantity
– Condenser
– Receiver-drier
– Condensation water drain
– Roof-top unit
Check for chafing and general condition
Test for leaks with leak tester
Check refrigerant level in viewglass
Check condition (clean if contaminated)
Replace
Check free passage and clean as required
Check overall condition and secure attachment of connections
X
X
X
X
X
X
X
Compressor
– Magnetic clutch
– Compressor
–V-belt
– Mounting bracket
Check engagement without slip / compressor start-up
Check noiseless operation
Check serviceability and tension
Check condition and secure attachment
X
X
X
X
Electrical connections
–Wiring
– Connections
Check undamaged condition
Check undamaged condition and secure attachment
X
X