Mitsubishi Electric SLZ Series Technical & Service Manual page 32

OPERATING PROCEDURE
8. Removing the drain pump (DP) and float switch (FS)
(1) Remove the panel. (Refer to procedure 2)
(2) Remove the room temperature thermistor (TH1). (Refer
to procedure 4)
(3) Remove the control box cover. (Refer to procedure 3)
(4) Remove the drain pan. (Refer to procedure 5)
Drain pump (See Photo 11 and 12)
(5) Disconnect the drain pump connector from the CNP and
float switch connector from CN4F on the indoor controller
board.
(6) Loosen the clamp fixing the connectors on the side of the
control box.
(7) Cut the hose band and release the hose.
(8) Remove the 2 screws fixing the drain pump and float
switch to the inner cover.
(9) Slide the base plate of the drain pump and float switch
as indicated by the arrow 1 to remove.
(10) Cut the band. (See Photo 12)
(11) Remove the 3 drain pump fixing screws, then remove the
drain pump. (See Photo 12)
Notes:
1. When re-attaching the drain pump, make sure to use a
band to fix the connector to the base plate.
2. Do not give a shock to the float switch. Otherwise it
can cause damage or malfunction.
9. Removing the heat exchanger
(1) Remove the panel. (Refer to procedure 2)
(2) Remove the room temperature thermistor (TH1). (Refer
to procedure 4)
(3) Remove the drain pan. (Refer to procedure 5)
(4) Remove the turbo fan and fan motor. (Refer to procedure
7)
Heat exchanger (See Photo 13 and 14)
(5) Remove the 3 pipe cover fixing screws to remove the
pipe cover.
(6) Remove the 2 coil plate fixing screws.
(7) Remove the coil support fixing screw, then remove the
coil support.
(8) Remove the heat exchanger.
TCH118
PHOTOS/FIGURES
Photo 11
Screw Screw
1 1
Drain
pump (DP)
Hose
Hose band
Photo 12
Drain pump (DP)
Drain pump
fi xing screws
Base plate
Photo 13
Pipe cover
Photo 14
Coil plate Coil plate
Coil plate Coil plate Coil plate Coil plate Coil plate Coil plate
fi xing
screws screws
Heat
exchanger
32
Clamp
Inner cover
Screw
Float switch (FS)
Drain pump
fi xing screws
Band
Float switch (FS)
Pipe cover fi xing screws
Pipe cover fi xing screws
Coil support Coil support
fi xing screw