Mitsubishi Electric MXZ-2D33VA, Service Manual

Page: 171 / 538

OPERATING PROCEDURE
PHOTOS
171
6. Removing the expansion valve
(1) Remove the service panel (Photo 1, 2).
(2) Remove the top panel (Photo 1).
(Gas recovery is not required if the unit is pumped down.)
(3) Remove the front panel for removing LEV F (Photo 1).
(4) Remove the electrical parts for removing LEV F (Photo 4).
(5) Remove the LEV coils.
(6) Detach the brazed parts of expansion valves and pipes.
Expansion
valves
Photo 9
LEV coils
Expansion valve F
LEV coil F
5. Removing the compressor and the 4-way valve
(1) Remove the service panel (Photo 1).
(2) Remove the top panel, the front panel and the rear
panel.
(3) Recover gas from the refrigerant circuit.
NOTE:
Recover gas from the pipes until the pressure gauge
shows 0 kg/cm
2
(0 MPa).
(4) Disconnect the compressor lead wire from terminal of
compressor (U, V, W).
(5) Disconnect the outdoor control P.C. board
connectors:
CN661, CN663, CN681, CN791, CN792, CN793, CN794,
CN795 (
MXZ-5D102VA
), CN796, CN931, CN932
Disconnect the noise filter P.C. board connector:
CN912
(6) Remove the screws of the electrical parts, and remove
the electrical parts.
(7) Remove the propeller fan.
(8) Remove the screws of the separator, and remove the
separator (Photo 6).
(9) Remove the sound proof felt (Photo 6).
(10) Detach the brazed parts of the compressor suction and
discharge pipes.
(11) Remove the compressor nuts and remove the compres-
sor.
(12) Detach the brazed parts of 4-way valve and pipe.
4-way valve
R.V. coil
Brazed parts
Photo 8
Photo 7
Suction
pipe
brazed
part
Discharge
pipe
brazed
part
Compressor nuts (3 places)
OBH626K