Mitsubishi Electric MXZ-4E72VA-E1 Service Manual page 120

OPERATING PROCEDURE
. Removing the fan motor
3
(1) Remove the service panel (Photo 1).
(2) Disconnect the power supply and indoor/outdoor connect-
ing wire.
(3) Remove the top panel, the cabinet, and the back panel
(Photo 1, 2, 3).
(4) Disconnect connectors CN712, CNF1, CNTH1, CNTH2,
CN63H, CN791, CN792, CN793, CN794 (MXZ-4E72VA),
CN797 on the outdoor control P.C. board and disconnect
the relay connector of the compressor lead wire.
(5) Remove 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.
4. Removing the compressor and the 4-way valve
(1) Remove the service panel (Photo 1).
(2) Disconnect the power supply and indoor/outdoor connect-
ing wire.
(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, CN793,
CN794 (MXZ-4E72VA), CN797, CN712.
(6) Disconnect the compressor lead wire from the terminal of
the compressor (U, V, W).
(7) Remove 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 *1, *2 and *3 (MXZ-3E54VA).
(10) Remove the screws of the separator, and remove the
separator.
(11) Detach the brazed parts of the compressor suction and
discharge pipes.
(12) Remove the compressor nuts and remove the compres-
sor.
(13) Detach the brazed parts of the 4-way valve and pipe.
OBH723G
(0 MPa).
2
120
PHOTOS
Photo 8
Screws of the outdoor fan motor
Propeller fan Propeller Separator Sound
fan nut
Photo 9
R.V. coil
Soundproof
Compressor nuts
felt *2
Photo 10
R.V. coil
Sound
proof felt *1
proof felt *3
(MXZ-
3E54VA)
4-way valve
LEV coil R
Expansion valve R
Discharge pipe
brazed part
Suction pipe
brazed part
4-way valve
Brazed parts