HVAC 863 HVAC (b) Evacuation and Recharging 1. Add refrigerant oil if necessary. 2. Evacuate the system according to the manufactures instruction. NOTE: If the vacuum reading is below 700 mmHg after 15 minutes, suspect a leak in the system. Partially recharge the system and check for leaks by using leak detector. Check suction lines first, then run the compressor for 5 minutes and then check the high pressure lines. CAUTION: The systemmust be evacuated immediately before recharging commences. Delay betweenEvacuation and Recharging is not permitted. 3. Recharge the refrigerant as per instructions. Refrigerant to be charged in the system is 380 ± 20 gms. For the vehicles fitted with ‘VALEO’ compressor, the refrigerant charge quantity is 410 + 20 gms. 4. If the full charge has not been accepted by the system, start the engine and run it at 1500 rev/min for a minimum of 2 minutes. Switch ON the air conditioning system, open the vehicle windows, set the temperature control to cold and switch the blower to maximum speed. 5. Consult Refrigerant Station Manual for correct procedure to complete the charge. 6. Carry out the air conditioning system performance test.
RkJQdWJsaXNoZXIy MTIwNTUz