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82 AIR CONDITIONING 6 ADJUSTMENT SYSTEM TEST 1. Place the vehicle in a ventilated, shaded area free from excessive draught, with the doors and 2. Check that the surface of the condenser is not restricted with dirt, leaves, flies, etc. Do not 3. Switch on the ignition and the air conditioner air flow control. Check that the blower is operating 4. Check that the evaporator condensate drain tubes are open and clear. 5. Check the tension of the compressor driving belt, and adjust if necessary. 6. Inspect all connections for the presence of refrigerant oil. If oil is evident, check for leaks, NOTE: The compressor oil is soluble in 7. Start the engine. the air conditioner blower control on and off 9. With the temperature control at maximum cooling and the blower control at high speed, 10. Repeat at 1800 rev/min. range and check the sight glass at intervals. 12. Check for frosting on the service valves. by hand for varying temperature. Low 14. Switch off the air conditioning blower and stop the engine. 15. If the air conditioning equipment is still not satisfactory, carry out a pressure test as PRECAUTIONS IN HANDLING REFRIGERANT WARNING: Wear eye and hand protection connections immediately. 1. When disconnecting any hose or pipe connection the system must be discharged of all 2. Lines, flexible end connections and components must be capped immediately they are opened to 3. Any dirt or grease on fittings must be wiped off with a clean alcohol dampened cloth. Do not use 4. All replacement components and flexible end connections must be sealed, and only opened 5. Ensure the components are at room temperature before uncapping, to prevent condensation of 6. Components must not remain uncapped for longer than 15 minutes. In the event of delay, the 7. Receiver/driers must never be left uncapped as they contain Silica Gel crystals which will absorb 8. The compressor shaft must not be rotated until the system is entirely assembled and contains a 9. A new compressor contains an initial charge of refrigerant oil. The compressor also contains a 10. The receiver/drier should be the last component connected to the system to ensure optimum |