Mitsubishi Electric EHGT17D-YM9ED Service Manual page 88

DISASSEMBLY PROCEDURE
15. How to remove the flow switch
(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 R.
(Refer to Procedure 13-3.)
(4) Disconnect the relay connector of the flow switch.
(5) Remove the band C. (Photo 14-1)
(6) Release the lead wires from the clamp on the brine pump
base. (Photo 15)
(7) Remove the flow switch. (Photo 15)
Note:
Tightening torque of the flow switch: 8 ± 1 N▪m
16. How to remove the booster heater
(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 R.
(Refer to Procedure 13-3.)
(4) Remove the flexible pipe (brine in). (Refer to Procedure
13-6).
(5) Remove the THW1 lead wire. (Photo 16-1)
(6) Release the lead wires from the clamp on B.H stay.
(Photo 16-1)
(7) Disconnect the relay connector of the booster heater.
(8) Remove the band C. (Photo 14-1)
(9) Remove the pipes (pipe and the flexible pipe) connected
with an elbow from the booster heater (the fastener and
the O-ring). (Photo 16-1)
(10) Remove the fastener and the O-ring on the pipe BH
WPHEX side from the booster heater. (Photo 16-1)
(11) Remove the booster heater assy (2 screws 4×10). (Photo
16-2)
(12) Remove the booster heater from the B.H stay (3 screws
4×8). (Photo 16-3)
OCH722A
PHOTOS/ FIGURES
Photo 15
Relay connector
Brine pump base
Photo 16-1
Pipe BH WPHEX
Pipes
(pipe and the
flexible pipe)
Fastener on the pipe BH WPHEX side
Photo 16-2
Flexible pipe
(Brine in)
Relay connector
Photo 16-3
88
Flow
Clamp
switch
Clamp on B.H stay
Elbow
Fastener and O-ring
on the booster heater
THW1
Elbow
Screws 4×10
Fastener and O-ring on
the flexible pipe side
Screws 4×8