Compressor HVAC: Service and Repair

CAUTION: As the compressor oil and receiver are highly moisture absorbent, use a non-porous material to plug the hose and nipples.

To prevent the entry of dust or other foreign bodies, plug the dismantled hoses and compressor nipples.

<> DRIVE BELT REMOVAL
The following operations will be needed due to the introduction of the serpentine drive system with the drive belt auto-tensioner.

1. Securely insert the spindle handle or ratchet handle with a 12.7 mm (1/2-inch) insertion angle into the jig hole of the auto-tensioner.
2. Rotate the auto-tensioner counterclockwise and align hole A with hole B.

CAUTION: To reuse the drive belt, draw an arrow indicating the rotating direction (clockwise) on the back of the belt using chalk, etc.

3. Insert an L-shaped hexagon wrench, etc. into the hole to fix and then remove the drive belt.

<> COMPRESSOR REMOVAL
Take care not to spill any compressor oil when removing the compressor.

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 floz)] of oil within the removed compressor.
2. Drain (from the new compressor) the amount [Y cu.cm (Y floz)] of oil calculated according to the following formula, and then install the new compressor.

New compressor oil amount = 120 cu.cm (4.1 floz)
120 cu.cm _ X cu.cm = Y cu.cm (4.1 floz _ X floz = Y floz)

NOTE: Y cu.cm (Y floz) indicates the amount of oil in the refrigerant line, the condenser, the evaporator, etc.

NOTE: 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 floz) and discharge from the new compressor.

Quantity:
Evaporator: 60 cu.cm (2.0 floz)
Condenser: 15 cu.cm (0.5 floz)
Suction hose: 10 cu.cm (0.3 floz)
Receiver: 10 cu.cm (0.3 floz)