Service precautions

Observe the following precautions when handling components used in the air conditioning system:

• Air conditioning units must not be lifted by their hoses, pipes or capillary lines.
• Hoses and lines must not be subjected to any twist or stress; the efficiency of the system will be impaired by kinks or restrictions. Ensure that hoses are correctly positioned before tightening couplings, and ensure that all clips and supports are utilized.
• Completed assemblies must be checked for refrigeration lines touching metal panels. Any direct contact of components and panels may transmit noise and so must be eliminated.
• The appropriate torque wrench must be used when tightening refrigerant connections to the stipulated value. An additional wrench must be used to hold the union to prevent twisting of the pipe when tightening connections.
• All protective plugs must remain in place to seal the component until immediately prior to connection.
• Ensure components are at room temperature before uncapping, to prevent condensation of moisture from the air that enters it.
• Components must not remain uncapped for longer than 15 minutes. In the event of a delay, the caps must be fitted.
• When disconnecting, immediately cap all air conditioning pipes to prevent ingress of dirt and moisture into the system.
• The receiver/drier contains desiccant which absorbs moisture. It must be positively sealed at all times. A receiver/drier that has been left uncapped must not be used.
• The receiver/drier should be the last component connected to the system to ensure optimum dehydration and maximum moisture protection of the system.
• Use alcohol and a clean, lint-free cloth to clean dirty connections.
• Ensure that all new parts fitted are suitable for use with the specified refrigerant.