III - 52
Service Procedures
3
SM830052
Operate correctly according to the procedure below.
(1)
Turn off the indoor and outdoor unit switches. Turn
on the indoor switch again, and after 1 minute, turn
off.
(This is to completely open the electronic refrigerant
control valve of the indoor unit.)
(2)
Collect all the refrigerant from the service valve
service port with the refrigerant collection device.
From the fully open state, turn each spindle 1 / 2 to
the right.
Removal:
(1)
Remove the fan guard shown in Fig. 1 (4 screws).
(2)
Remove the cover in front of the compressor cover
ceiling plate (2 screws).
(3)
Remove the compressor cover ceiling plate (2 screws).
Lift up the left side of the ceiling plate and with the
ceiling plate tilted, pull it out.
(4)
Remove the electrical units and control lines from
the terminal plates.
(5)
Disconnect the connector connected to the outdoor
unit PCB from inside the unit. (Solenoid, ther-
mistor, fan motor, crank case heater, etc.)
(6)
Remove the electrical component box (4 screws).
(7)
Remove the screws holding the compressor cover
main unit and shift it to the rear.
(3 locations at the bottom plate and 2 locations at
the left / right side plates)
(8)
Remove the noise absorbing material packed
around the compressor.
(9)
Remove the compressor terminal section cap and
disconnect the power terminals and internal
terminals.
(10) Remove the crank case heater.
(11) Remove the 2 bolts (front side) shown in Fig. 2 and
the 1 nut with washer (rear side).
(12) Prepare to remove the welded section in Fig. 3.
¶
Protect the sensor section, surrounding metal
plates, rubber pieces, leads, clampers, etc.
(13) Disconnect the welded section shown in Fig. 3.
¶
Compressor with power save — 5 locations
¶
Fixed-speed compressor
— 3 locations
(14) Pull the compressor forward.
(Be careful not to damage the bottom plate.)
7. Operation Procedure for Replacing the Compressor
Fig. 2
Fig. 3
Fig. 1
0349_C_I
Compressor with power
save (left side)
Fixed-speed
compressor (right side)
Nut with
washer
Bolt
Front side
Nut with washer
0351_C_I
Welded section
to disconnect
Fixed-speed
compressor
Crank case
heater
0350_C_I
Welded section
to disconnect
Compressor with
power save
Welded section
to disconnect
Crank case
heater
0348_M_I
Compressor cover ceiling plate
Fan guard
Front cover
Side plate (left)
Electrical
component box
Compressor
cover main unit
Bottom plate
Side plate (right)