Mitsubishi Electric MXZ-2D33VA Service Manual page 168

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
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-3D54VA-
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 compres-
sor.
(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.
OBH626K
(0 MPa).
, -
E3 ER3
Photo 8
R.V. coil
, - ,
ET3
Compressor nuts
Photo 9
R.V. coil
Photo 10
LEV coils
168
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