Mitsubishi Electric EHGT17D-YM9ED Service Manual page 87

DISASSEMBLY PROCEDURE
14. How to remove the water pump
(1) Pull out the module unit assy. (Refer to Procedure 11.)
(2) Remove the module box front. (Refer to Procedure 13-2.)
(3) Remove the module box top and the module box side L
from the module unit assy (13 screws 4x10). (Figure 11-5-
1)
(4) Disconnect the lead wire from the connector of the water
pump. (Photo 14-1)
(5) Disconnect the lead wire of the flow sensor. (Photo 14-2)
(6) Remove the flexible pipe (H-STR) from the water pump (the
G1"nut and the 1" gasket on the flexible pipe side). (Photo
14-2)
(7) Release the THW2 lead wire. (Photo 14-2)
(8) Remove the water pump assy (2 screws 4×10), the
fastener and the O-ring at the P-HEX side). (Photo 14-2
and 14-3)
(9) Remove the pipes of the water pump from the water pump
assy (the fastener and the O-ring at the pump side). (Photo
14-4)
(10) Remove the screws fixing the pump and the pump stay (2
screws 4×10 each at 2 positions). (Photo 14-4)
(11) Remove the upper and lower G1" nuts and the 1" gaskets
at 2 positions from the water pump assy. (Photo 14-4)
Note:
Tightening torque of the G1" nuts: 42 ± 2 N▪m
Tightening torque of the flow sensor: 0.6 ± 0.2 N▪m .
Photo 14-4
Valve
Screws 4×10
G1" Nut
1" Gasket
Valve
*1 When replacing the pump only
● Remove the front panel. (Refer to Procedure 1.)
● Remove the module box front, then close the valves
above and under the pump.
● Remove the G1" nuts and the 1" gaskets on and under
the pump.
*2 When replacing the strainer only
● Remove the front panel. (Refer to Procedure 1.)
● Remove the module box front, then close the valve on
and under the pump.
● Remove the strainer cover on the pump.
Notes:
● Tightening torque of the G1" nut: 42 ± 2 N▪m
● Tightening torque of the strainer cover: 40 ± 2 N▪m
OCH722A
G1" Nut
1" Gasket
Water pump pipe
Fastener and O-ring
Screws 4×10
on the pump side
PHOTOS/ FIGURES
Photo 14-1
Flexible pipe
(Brine out)
Water pump
Connector
Band A
Band B
Photo 14-2
Pipe BH
BPHEX
Fastener and O-ring
on the P-HEX side
Flow sensor
Band D THW2
Photo 14-3
Water pump assy
*1
Valve
G1"
Nuts
Valve
87
Pipe BPUMP
BPHEX
Band C
Flexible pipe
(H-STR)
G1" Nut
1" Gasket
on the flexible
pipe side
Pump stay
Screws 4×10
Strainer
cover
*2