Mitsubishi Electric MXZ-2D33VA Service Manual page 126

OPERATING PROCEDURE
5. Removing the compressor and the 4-way valve
(1) Remove the service panel (Photo 1).
(2) Remove the top panel, the cabinet, and the back panel
(Photo 1, 2, 3).
(3) Recover gas from the refrigerant circuit.
NOTE: Recover gas from the pipes until the pressure gauge
shows 0 kg/cm (0 MPa).
2
(4) Disconnect the compressor lead wire from terminal of the
compressor (U, V, W).
(5) Disconnect the outdoor control P.C. board
connectors:
CN661, CN665, CN681 (MXZ-3D68VA, MXZ-4D72VA),
CN711, CN712, CN791, CN792, CN793,
CN794 (MXZ-4D72VA), CN795, CN931
(6) Remove the screws of the electrical parts, and remove the
electrical parts (Photo 4).
(7) Remove the propeller fan.
(8) Remove the screws of the separator, and remove the
separator (Photo 7).
(9) Remove the sound proof felt (Photo 7).
(10) Detach the brazed parts of the compressor suction and
discharge pipes.
(11) Remove the compressor nuts and remove the compressor.
(12) Detach the brazed parts of 4-way valve and pipe.
6. Removing the expansion valve
(1) Remove the service panel (Photo 1).
(2) Remove the top panel, the cabinet, and the back panel
(Photo 1, 2, 3).
(Gas recovery is not required if the unit is pumped down.)
(3) Remove the electrical parts for removing LEV E (Photo 4, 8).
(4) Remove the LEV coils.
(5) Detach the brazed parts of expansion valves and pipes.
OBH626F
Photo 8
R.V. coil
Compressor nuts
Photo 9
R.V. coil
Photo 10
LEV coils
126
PHOTOS
4 way valve
LEV coil E
Expansion valve E
Discharge pipe
brazed part
Suction pipe
brazed part
4 way valve
Brazed parts
Expansion
valves