Mitsubishi Electric PLA-SM71EA2 Service Manual page 41

OPERATING PROCEDURE
13. Removing the float switch (FS)
(1) Remove the drain pan. (Refer to procedure 10)
(2) Loosen the clamp of the drain pump. (See Photo 15)
(3) Remove the float switch (tapping screw 4×10: 1 screw/1
hook). (See Photo 15)
(4 Remove the float switch base and the lead wire fixing
band. (See Photo 16)
(5) Remove the lead wire from the U shaped portion of the
float switch base. (See Photo 16)
(6) Slide the float switch towards the arrow to remove from
the float switch base.
14. Removing the heat exchanger
(1) Remove the drain pan. (Refer to procedure 10)
(2) Remove the piping cover (tapping screw 4×10: 3 screws).
(3) Remove the coil plate (tapping screw 4×10: 2 screws).
(4) Remove the heat exchanger fixing screws
(tapping screw 4×10: 2 screws).
(5) Remove the coil support (tapping screw 4×10: 1 screw
each)
■ SM71: 1 coil support (See photo 17)
■ SM100-140: 3 coil supports (See photo 18)
(6) Remove the heat exchanger.
Photo 18
Heat exchanger fixing screws
Coil support
Piping cover
fixing screws
Coil plate
OCH784
Photo 16
Do not hold this floating part
when lifting; Doing so will
cause malfunction.
Float switch
Photo 17
Coil supports
Piping cover
Heat exchanger
41
PHOTOS/FIGURES
U shaped portion of the
float switch base
Heat exchanger fixing screws
Coil plate
Float switch base
Float switch
base and lead
wire fixing band
Coil support fixing screw
Coil support
Heat exchanger