How To Remove The Scale Trap (Sanitary Circuit) - Mitsubishi Electric EHST17D-VM2D Service Manual

DISASSEMBLY PROCEDURE

20. How to remove the scale trap (sanitary circuit)

(1) Remove the front panel. (Refer to Procedure 1.)
(2) Disconnect the CNP4 connector and the earth cable in
the control box. (Photo 4-1)
(3) Release the water pump lead wire from the cable clamp
and the cable strap in the control box, the cable strap,
the fastener and the band below the control box.
(Photos 4-1 and 10-1)
(4) Remove the P-HEX (Water-Water). (Refer to Procedure
18.)
(5) Remove the water pump. (Refer to Procedure 19.)
(6) Rotate pipe (W.P. - Tank) side up.
(7) Remove the screw which fixes the
remove the support. (Photo 20-1)
W.C.
• Reuse the support.
W.C.
(8) Remove the 3 screws (Right side) and screw (fixing the
S.T.-W.P. support). (Photos 20-1 and 20-2)
(9) Remove the scale trap with the S.T.-W.P. support. (Photo
20-2)
(10) Remove the screws and the saddle band, then remove
the scale trap. (Photo 20-2)
• When reinstalling the G1" nut, use a new G1" gasket.
• Reuse the saddle band and the screws.
OCH714A
Photo 20-1
support to
W.C.
Photo 20-2
P-HEX
(Water-Water)
Saddle band
80
PHOTOS/ FIGURES
Pipe
(tank-W.C.)
W.C.
support
Nut (G3/4")
Screw fixing the
S.T.-W.P. support
Quick connection
clip
S.T.-W.P. support
Pipe (W.P. - Tank)
Water pump
Pipe (W.P.-Tank)
Water pump
Screw
(right side)
Nut (G1")
Gasket (G1")
Nut (G3/4")
Screw
(right side)
Scale trap
Screws
Screw
(right side)