Mitsubishi Electric PLA-SM71EA2 Service Manual page 37

OPERATING PROCEDURE
6. Removing the electrical box
(1) Remove the electrical box cover (See Photo 1 and 2)
and the connectors (Refer to procedure 5).
(2) Remove the electrical box fixing screws
(M5×10: 2 screw). (See Photo 3)
<Electrical parts in the electrical box>
• Terminal block for earth and reactor
• Indoor controller board
• Thermistor (TH)
(3) Remove the electrical box (2 hooks).
7. Removing the turbo fan
(1) Remove the electrical box. (See Photo 3 and refer to
procedure 6)
(2) Remove the bell mouth (tapping screw 4×10: 2 screws).
(See Photo 6)
(3) Remove the nut (M8 × 1) and a square washer. (See
Photo 7 and 8.)
(4) Remove the turbo fan.
Note 1: When assembling the turbo fan, attach it so that
its tabs fit the holes of washer.
Note 2: Nut tightening torque: 4.5 ± 0.5 Nm.
Turbo fan
tabs
Photo 8
Turn this way to tighten.
(The same directions as the fan rotation.)
OCH784
Washer
holes
Turn this way to loosen.
37
PHOTOS/FIGURES
Photo 6
Bell mouth fixing screws
Hooks
Photo 7
Nut and washer
< Nut and washer >
Photo 9
Be careful when removing heavy parts.
Bell mouth
Electrical box
Turbo fan