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1A–70 HEATING, VENTILATION AND AIR CONDITIONING (HVAC) f Check to be sure that the clutch clearance is 871RW011 f If necessary, install adjusting shim(s). f Adjusting shims are available in the following Thickness f 0.1 mm (0.0039 in.) f 0.3 mm (0.0118 in.) f 0.5 mm (0.0197 in.) Compressor Oil Oil Specification f The HFC-134a system requires a synthetic (PAG) f Compressor (PAG) oil varies according to f Always use HFC-134a Vane Rotary Type Handling of Oil f The oil should be free from moisture, dust, metal f Do not mix with other oil. f The water content in the oil increases when exposed f The compressor oil must be stored in steel Compressor Oil Check The oil used to lubricate the compressor is circulating with Oil Capacity Checking and Adjusting Oil Quantity 1. Perform oil return operation. Refer to Oil Return Operation in this section. 2. Discharge and recover refrigerant and remove the compressor. 3. Drain the compressor oil and measure the extracted oil with a measuring cylinder. 4. If the amount of oil drained is much less than 90 cc (3.0 fl. oz.), some refrigerant may have leaked out. 5. Check the compressor oil contamination. (Refer to Contamination of Compressor Oil in this section.) 6. Adjust the oil level following the next procedure below. (Charging Amount) (Collected Amount) more than 90cc same as collected less than 90 cc (3.0 fl.oz) 90cc (3.0 fl.oz) 7. Install the compressor, then evacuate, charge and perform the oil return operation. 8. Check system operation. When it is impossible to preform oil return operation, 1. Discharge and recover refrigerant and remove the compressor. |