Mitsubishi Electric MXZ-2C20NA2 Service Manual page 143

OPERATING PROCEDURE
. Removing the fan motor
3
(1) Remove the service panel (Photo 1).
(2) Disconnect the power supply cord and indoor/outdoor con-
necting wires.
(3) Remove the top panel, the cabinet, and the back panel
(Photo 1, 2, 3).
(4) Disconnect the connectors of CN712, CNF1, CNTH1,
CNTH2, CN63H, CN791, CN792, CN797 on the outdoor
control P.C. board and disconnect the relay connector of
the compressor lead wire.
(5) Remove all the screws of the electrical box assembly, and
remove the electrical box assembly (Photo 4).
(6) Remove the propeller fan.
(7) Remove the fan motor.
NOTE: The propeller fan nut is a reverse thread.
4. Removing the compressor and the 4-way valve
(1) Remove the service panel (Photo 1).
(2) Disconnect the power supply cord and indoor/outdoor con-
necting wires.
(3) Remove the top panel, the cabinet, and the back panel
(Photo 1, 2, 3).
(4) Recover gas from the refrigerant circuit.
NOTE: Recover gas from the pipes until the pressure
gauge shows 0 kg/cm
(5) Disconnect the outdoor control P.C. board connectors:
CNF1, CNTH1, CNTH2, CN63H, CN791,CN792, CN797,
CN712.
(6) Disconnect the compressor lead wire from the terminal of
the compressor (U, V, W).
(7) Remove all the screws of the electrical box assembly, and
remove the electrical box assembly (Photo 4).
(8) Remove the propeller fan.
(9) Remove the sound proof felt
(10) Remove all the screws of the separator, and remove the
separator.
(11) Detach all the brazed parts of the compressor suction and
discharge pipes.
(12) Remove all the compressor nuts and remove the
compressor.
(13) Detach all the brazed parts of the 4-way valve and pipe.
OBH702N
(0 MPa).
2
, .
and
143
PHOTOS/FIGURES
Photo 8
Screws of the outdoor fan motor
Propeller fan Propeller Separator Sound
fan nut
R.V. coil
Photo 9
Sound
proof
felt *2
Compressor nuts
Photo 10
R.V. coil
Sound
proof
felt
Sound
proof
proof felt
felt
4-way valve
LEV coil R
Expansion valve R
Discharge pipe
brazed part
Suction pipe
brazed part
4-way
valve
Brazed parts