Trane Mitsubishi Electric CITY MULTI Series Technical & Service Manual page 42

OPERATING PROCEDURE
9. Removing the drain pan
(1) Remove the intake grille and the filter. (See Procedure 1.)
(2) Remove the electrical box cover. (See Procedure 2.)
(3) Disconnect the connectors. (Refer to Procedure 4.)
(4) Remove the grille. (See Procedure 8.)
(5) Remove the electrical box. (See Procedure 5.)
(6) Remove the 2 bell mouth fixing screws (tapping screw: 4
× 10) to remove the bell mouth. (See Photo 6.)
(7) Remove the 4 drain pan fixing screws (M5 × 10) and pull
out the drain pan.
10. Removing the pipe temperature detection thermistor/liq-
uid (TH22) and pipe temperature detection thermistor/gas
(TH23)
(1) Remove the intake grille and the filter. (See Procedure 1.)
(2) Remove the electrical box cover. (See Procedure 2.)
(3) Disconnect the connectors. (Refer to Procedure 4.)
(4) Remove the grille. (See Procedure 8.)
(5) Remove the electrical box. (See Procedure 5.)
(6) Remove the 2 bell mouth fixing screws (tapping screw: 4
× 10) to remove the bell mouth. (See Photo 6.)
(7) Remove the drain pan. (See Procedure 9.)
(8) Remove the thermistors which are inserted into the hold-
ers installed to the thin copper pipe.
11. Removing the drain pump (DP) and float switch (FS)
(1) Remove the intake grille and the filter. (See Procedure 1.)
(2) Remove the electrical box cover. (See Procedure 2.)
(3) Disconnect the connectors. (Refer to Procedure 4.)
(4) Remove the grille. (See Procedure 8.)
(5) Remove the electrical box. (See Procedure 5.)
(6) Remove the 2 bell mouth fixing screws (tapping screw: 4
× 10) to remove the bell mouth. (See Photo 6.)
(7) Remove the drain pan. (See Procedure 9.)
Drain pump (DP)
(8) Cut the hose band and remove the hose. (See Photo 15.)
(9) Loosen the clamp for the drain pump. (See Photo 15.)
(10) Remove the 2 drain pump base fixing screws (tapping
screw: 4 ×10), and loosen the 2 hooks to remove the
drain pump assembly.
Float switch (FS)
(8) Loosen the clamp for the drain pump. (See Photo 15.)
(9) Remove the float switch fixing screw (tapping screw: 4
×10), and loosen the hook to remove the float switch.
(See Photo 15,16.)
OCHT746A
PHOTOS/FIGURES
Photo 13
Drain pan
fixing screw
Photo 14
Pipe temperature
detection thermistor/
gas (TH23)
Photo 15
Drain pump
Clamp
Drain pump
base fixing
screws
Photo 16
42
Drain pan
Drain pan
fixing screw
Pipe temperature
detection thermistor/
liquid (TH22)
Float switch
Hose band
Float switch fixing
screws
Do not hold this floating
part when lifting;
Doing so will cause
malfunction.
Float switch