Webasto CC8 - Maintenance

Roof-top air-conditioning system CC8 6 Maintenance
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6 Maintenance
6.1 Safety precautions
Observe safety regulations set out in 1.4.
6.2 General
1. Work on the refrigerant circuit may only be performed by skilled personnel and authorized workshops.
2. The specific equipment, special tools and accessories detailed in 4.3 are required and must be used for servicing
the air-conditioning circuit.
3. Like all parts of the vehicle, the air-conditioning system is also subject to continuous stress. Scheduled
maintenance must be performed regularly in order to ensure proper operation of the system and avoid damage.
4. Proper handling of the system and a complete record of all the required scheduled maintenance are essential for
acceptance of possible warranty claims concerning damaged components subject to maintenance.
5. To prevent the shaft seals of the compressor drying out and to avoid moving components seizing up within the
refrigerant circuit due to gumming, the air-conditioning system must be operated at least once a month for
approx. 15 minutes when not in use. Requirement: minimum outside temperature > 5 °C or heated hall.
NOTE
Ensure that the amount of oil in the air-conditioning system is always at the level
specified in the installation and service manual.
Total oil quantity = oil quantity for compressor (see 3.3) + oil quantity according
to hose length (see 4.10).
CAUTION
• The flap must be closed when the air-conditioning system is exposed to a direct
water jet when cleaning the vehicle or when running the vehicle through a car
wash.
• The fresh air ventilation flap should remain closed in winter.
6.3 Maintenance and care
1. Regardless of the following maintenance schedule, all component attachments and the refrigerant hose
connections must be checked to ensure they are secure after the first 4 weeks of operation of the roof-top air-
conditioning system.
2. Even if the air-conditioning system is not operated, individual components are subject to wear due to normal ageing
or stress due to vehicle operation. All checks listed in the maintenance and servicing plan must therefore be
performed regardless of the system operating hours.
3. Even if hose connections do not leak, refrigerant may be lost regardless of operating hours. Due to the material
structure of refrigerant hoses, they have a diffusion rate that varies with ambient temperature. However,
considerable loss of refrigerant in a short period of time indicates that there is a leak in the system.
4. Slight contamination of evaporator and condenser fins is removed with compressed air applied against normal
direction of air flow.
Major contamination or greasy deposits must first be removed with soapy water or a suitable cleaning solvent
(not aggressive for copper or aluminum) before cleaning with compressed air or a water jet.