Compressor HVAC: Service and Repair
COMPRESSOR AND TENSION PULLEY
REMOVAL AND INSTALLATION
REMOVAL SERVICE POINTS
DRIVE BELT REMOVAL
1. Loosen the bolts "A" <4G1> or nut "A" <4G9> for holding.
2. Loosen the bolt "B" for adjustment.
3. Remove the drive belt.
SUCTION HOSE, DISCHARGE HOSE DISCONNECTION
Plug the disconnected hose and the compressor nipple not to let foreign matter get into them.
CAUTION: Seal the hoses completely, otherwise the compressor oil and receiver will absorb water vapor easily.
When doing this work, be careful not to spill the compressor oil.
INSTALLATION SERVICE POINT
>A< COMPRESSOR INSTALLATION
If a new compressor is installed, first adjust the amount of oil according to the procedures described below, and then install the compressor.
1. Measure the amount {X cu.cm (X fl.oz.)} of oil within the removed compressor.
2. Drain (from the new compressor) the amount of oil calculated according to the following formula, and then install the new compressor.
New compressor oil amount
120 cu.cm - X cu.cm = Y cu.cm
(4.1 fl.oz. - X fl.oz. = Y fl.oz.)
NOTE:
1. Y cu.cm (Y fl.oz.) indicates the amount of oil in the refrigerant line, the condenser, the evaporator etc.
2. When replacing the following parts at the same times as the compressor, subtract the rated oil amount of the each part from Y cu.cm (Y fl.oz.) and discharge from the new compressor.
Quantity
Evaporator: 60 cu.cm (2.0 fl.oz.)
Condenser: 15 cu.cm (0.5 fl.oz.)
Suction hose: 10 cu.cm (0.3 fl.oz.)
Receiver: 10 cu.cm (0.3 fl.oz.)