Toshiba MMU-AP0074YH-E Service Manual page 129

No. Part name
9 Drain pump, Float 1. Detachment
switch, Drain hose
Only for MMD-
AP0071SPH to
AP0181SPH
MMD-0071SPH-C
NOTE
to AP0181SPH-C
Unlock locks of the housing to remove the connectors.
MMD-0071SPH-K
to AP0181SPH-K
NOTE
If the pipes are damaged, refrigerant leak may be caused.
Take out them with great care.
2. Attachment
NOTE
Finally check whether they correctly operate or not.
10 Evaporator 1. Detachment
assembly
2. Attachment
Procedure
1) Perform works in procedures 1. of 2, 1. of 3, 1. of 8.
2) Disconnect lead wires which are connected to the following
connectors of P.C. board assembly.
CN34: Float SW (3P: Red)
CN68: Drain pump lead (3P: Blue)
3) Loosen hose band, remove cap of the drain hose, and take
off screws while holding the sheeting metal on which float
switch and drain pump are put on. Remove them with care
that pipes are not damaged. (Ø4× 10, 2 pcs)
1) Attach ASSY sheeting metal which was removed in procedure 1. 3) of 9 with care that pipes are not
damaged, and then fix it with screws.
2) Insert the drain hose into the inlet of drain pump, and then fix it with hose band.
Arrange handle of the hose band at contrary side of heat exchanger side and at direction remote from drain
pan assembly.
3) Carry out wiring as before, and then perform work of procedure 2. of 8.
1) Recover refrigerant, and then remove refrigerant pipes at
indoor unit side.
2) Perform works of procedures 1. of 2, 1. of 3, 1. of 8.
Remove sensors.
3) Take off screws of the pipe holder, and remove the pipe
holder. (Ø4 × 10, 2 pcs)
4) Take off screws of the heat exchanger support board (Pipe
side), and remove the heat exchanger support board (Pipe
side). (Ø4 × 10, 4 pcs)
5) Take off screws of the heat exchanger support board
(Opposite side) which fixes terminal block of the evaporator
assembly. (Ø4 × 10, 2 pcs)
6) Remove the evaporator assembly.
1) Fasten the parts as before in order, Evaporator assembly
➝ Pipe holder ➝ Set sensors ➝ Drain pan assembly ➝
Under panel.
2) Connect the refrigerant pipe as before, and then perform
vacuuming.
Hose band
Heat exchanger support board (Pipe side)
128
Remarks
Drain hose
Drain pump
Float switch
Pipe holder