Panasonic U-8ME1E81 Service Manual page 101

9. Compressor
9-3-3. Removing Constant-Speed Compressors (for model 18 and 20 horsepower)
(1) After retrieving refrigerant from the system, perform nitrogen gas
replacement on the service port of the gas side service valve.
(2) Remove the insulator that the compressor is surrounded.
(3) Remove the lid on the compressor terminal plate.
Then disconnect the power cablel and discharge sensor.
(4) Remove the crankcase heater.
(5) Remove the bolts (3 locations) on the foot of the compressor.
Then remove the washers and rubber spacers.
(6) Disconnect the tube-with-flare-nut for the constant-speed compressor.
If oil remaining in the compressor reaches the equalized
NOTE
oil level, oil will come pouring out. Cover the tube in place
with waste cloth while watching out for oil leaks.
Then cap the disconnected tube and mount the flare nut
on the compressor. Tighten the flare nut with a seal
bonnet (1/4") in it.
(7) Double-ring clamp with rubber is supplied near the constant-speed
compressor as shown in the figure. Cut the clamp and remove the
double-ring clamp with rubber.
After the compressor is replaced, install the double-ring
NOTE
clamp with rubber in its original position.
When shipping, the resin clamper is used.
After replacement of the compressor, use the stainless
clamper (parts code : CV9380208259).
Cut the edges properly not to make the clamper contact
the tube and wiring.
(8) Remove the welded parts (3 locations for INV compressor,
2 locations for constant-speed compressor) as shown in the figure.
Welded parts (2 locations)
Constant-Speed Compressor 1
Protect the sensors and the surrounding
CAUTION
plates, rubber, lead wires, clamps, and
other items.
(9) Pull the compressor toward you.
Double-ring clamp
with rubber
Tube-with-flare-nut
3 - 35
Outdoor Unit Repair Procedures
INV compressor
Constant-speed compressor 1
Constant-speed compressor 2
Model 18 and 20HP
Welded parts (2 locations)
Tube-with-flare-nut
Constant-Speed Compressor 2
2WAY SYSTEM
3