Mitsubishi Electric PMFY Series Technical & Service Manual page 33

OPERATING PROCEDURE
Removing the grille
(1) Open the intake grille by pressing
grille and remove the air fi lter (× 2). (See Figure 1)
(2) Remove the screw cover in the middle of the air outlet. (See
Figure 7)
(3) Open the upper and lower fl aps on the indoor unit com-
pletely. (See Figure 7)
(4) Remove the securing screws (× 7).
(A: M5 × 0.8 × 16, 6pcs)
(B: 4 × 16, 1pc)
(5) Remove the temporary holding tabs on the grille to the
hooks on the indoor unit.
Attaching the grille
(1) Open the upper and lower fl aps on the indoor unit com-
pletely.
(2) Hook the temporary holding tabs on the front panel to the
hooks on the indoor unit.
(3) Adjust the grille so that it fi ts properly in the angle between
the ceiling and the wall, and install the securing screws A
(supplied with this grille) in their 4 places at left and right,
leaving them slightly loose.
(4) Tighten the securing bolts A and securing screws B in the
centre 3 places. (See Figure 6)
(5) Tighten the securing bolts A in the 4 places at left and right.
* Make sure there are no gaps between the indoor unit and
the grille, and between the grille and the ceiling surface.
If there are gaps, the wind may come in and it may cause
water to drip. (See Figure 8)
* Tighten the securing bolts A and securing screws B com-
pletely.
(6) Replace the air fi lter and screw cover, and press
the intake grille until you hear it snap into place.
Checks after setting the grille
(1) Check that there are no gaps between the indoor unit and
the grille, between the grille and the ceiling surface. If there
are gaps, the wind may come in and condensation may
result.
(2) Check that the air fi lter is in place.
OC307E
of the air intake
PUSH
of
PUSH
33 33
PHOTOS&ILLUSTRATIONS
Figure 6
Hooks
Temporary holding tabs
A
A
A
Hooks
Figure 7
Temporary
holding tabs
Screw cover
Figure 8
Indoor unit
Ceiling surface
No gaps between the
indoor unit and the grille
A
B
A
A
Upper and lower fl aps
* Open completely
Temporary
holding tabs
Grille