Mitsubishi Electric EHSC-MEC Service Manual page 77

DISASSEMBLY PROCEDURE
6. How to remove the flow sensor
(1) Remove the front panel. (Refer to Procedure 1.)
(2) Disconnect the CN1A connector on the controller board.
(Photo 6-1)
(3) Release the flow sensor lead wire from the cable clamp,
the 2 cable straps, the coated clamp and feed the lead
wire out the control box without putting strain on the
CN1A connector. (Photo 6-1)
(4) Swing the control box to the front. (Refer to Procedure 4.)
(5) Remove the flow sensor by removing the nut. (Photo
6-2)
<For R2/R3 models>
(5) Remove the flow sensor by detaching the same diameter
quick connection. (Photos 6-4 and 6-5)
• When reinstalling the flow sensor, use new O-rings.
(Photo 6-3 and 6-5)
• Set the flow sensor in the orientation of the arrow
printed on the flow sensor and in the way that the
sensor part faces to the left. (Photo 6-2 and 6-4)
• Refer to page 90 for how to attach and detach the
quick connection.
R2/R3 models
Photo 6-4
Sensor part
Photo 6-5
OCH571D
Same diameter
quick connection
O-ring
Flow sensor
Flow direction
O-ring
Same diameter
quick connection
O-rings
77
PHOTOS/ FIGURES
Photo 6-1
Cable strap Coated clamp
Photo 6-2
Sensor part
Photo 6-3
O-ring
CN1A
connector
Lead wire
Cable
clamp
Cable strap
O-ring
Nut (G1")
Flow sensor
Flow direction
Nut (G1")
O-ring