How To Remove The Flow Switch - Mitsubishi Electric EHSC-VM2B Service Manual

DISASSEMBLY PROCEDURE

6. How to remove the flow switch

(1) Remove the front panel. (Refer to Procedure 1.)
(2) Remove the control box cover. (Refer to Procedure 3.)
(3) Disconnect the CN2F connector on the controller board.
(Photo 6-1)
(4) Release the flow switch lead wire from the 2 cable
clamps, the cable strap, the 2 coated clamps and feed
the lead wire out the control box without putting strain
on the CN2F connector. (Photo 6-1)
(5) Swing the control box to the front. (Refer to Procedure 4.)
(6) Remove the flow switch by removing the nut. (Photo 6-2)
* When reinstalling the nut, use a new O-ring.
(Photo 6-3)
Note: To ensure the correct functioning of the flow switch,
check the following when installing it:
▪ The flow switch paddle is set perpendicularly to the
water flow. (Photos 6-2, 6-4)
▪ The lead wire of the flow switch points to the left-hand
side. (Photo 6-2)
▪ The lead wire runs parallel to the water pipe. (Figure 6-1)
Photo 6-4
Flow switch paddle
Figure 6-1
Flow
Lead wire
Flow
Flow
OCH532A
Flow switch Pipe
OK
Pipe
Flow switch
NG
Flow switch Pipe
NG
Figure 2
PHOTOS
Photo 6-1
Cable
clamps
Cable
strap
Coated
clamp
Photo 6-2
Photo 6-3
O-ring
72
Flow switch connector
Coated
(CN2F)
clamp
Lead wire
Flow switch
Nut
Flow direction
Water pipe