Sanyo SPW-CR703GDCH8 - PC Unit

Replacement of Main Units
TD831077
VII-5
7
1. Compressors
(1) Replacing the power control (PC) compressor (Ref. Fig. 1)
[Removal]
1. Remove the front panel at the front.
2. Remove the sound-proofing material which is wrapped around the compressor.
3. Remove the cap over the compressor terminal section, and disconnect the power and internal terminals. (Do this in
two places at the left and right.)
4. Remove the crankcase heater.
5. Disconnect the oil sensor leads from the PCB.
6. Remove the three bolts.
7. Prepare to remove the welded areas. (Protect the sensor unit and the plate, rubber, leads and clampers around it.)
8. Remove the three welded areas and disconnect the connecting parts. If area (A) proves hard to remove, cut the
pipe shown in the figure, and then remove.
9. Draw the compressor out toward you.
1868_M_I
Welded areas (×3)
(Area A)
Area where pipe
is to be cut
Crankcase heater
Bolts (×3)
Oil sensor
Cloth
PC pipe
Power terminal
Internal terminal
Ball valve
Before drawing out
the compressor,
spread a cloth under
it to protect the bottom
panel from damage.
[Installation]
1. Prepare to install the compressor.
¶ Remove the oil sensor and PC pipe from the
failed compressor.
To return the oil inside the oil sensor to the
compressor, tilt the compressor toward the
opposite side to that of the oil sensor, and then
close the ball valve.
Remove the upper and lower flare nuts.
¶ Remove the stoppers over the outlet and intake
ports of the new compressor.
¶ Mount the oil sensor and PC pipe on the new
compressor. After installing the oil sensor, be
absolutely sure to open the ball valve.
¶ Mount the flare nuts and other parts which were
removed from the new compressor onto the
failed compressor.
2. Install the compressor in the outdoor unit.
(Be absolutely sure to check the compressor’s
model number. The PC compressor is on the left.
Its model number has the suffix “S or U”.)
3. Install the pipes.
4. Replace the air inside the pipes with nitrogen.
(If the pipes have not been inserted, discharge a
small amount of the nitrogen while using a burner to
apply heat to them, and insert. Use wet cloths or
other suitable materials to cool off the surrounding
pipes.)
5. Braze with copper.
Fig. 1
1-3. PC unit