Mitsubishi EHST20C-VM2C - 19. How to remove the scale trap (sanitary circuit)

DISASSEMBLY PROCEDURE
PHOTOS
96
19. 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2cable
clampsandthecablestrapinthecontrolbox,the2
cablestrapsandthe3bandsbelowthecontrolbox.
(Photos 4-1 and 10-1)
(4) Remove the P-HEX (Water-Water) (Refer to Procedure
17).
(5)Removethe3screwsandtheplate(underP-HEX
(W-W)). (Photo 19-1)
(6)Removethepipe(Tank-P-HEX(W-W))byremovingthe
G3/4"nut.(Photo19-1)
•
WhenreinstallingtheG3/4"nut,useanewG3/4"gasket.
(7)RemovetheG3/4"nutandquickconnectionclipfromthe
pipe (W.P. - Tank). (Photo 19-2)
• WhenreinstallingtheG3/4"nut,useanewG3/4"gasket.
(8)RemovethescrewwhichfixestheS.T.support.(Photo
19-3)
•Ifthereisnotenoughspacetouseascrewdriver,
rotatethepipe(W.P.-Tank)forwardwithauseofthe
quick connection part as a fulcrum.
(9)
Removethe2screws(Rightside).(Photos19-1and19-2)
(10)Removethescaletrapwiththewaterpump,pipesand
the S.T. support. (Photo 19-4)
(11) Remove the G1"nut,thescrewsandthesaddleband,
then remove the scale trap.
(Photo 19-4)
•WhenreinstallingtheG1"nut,useanewG1"gasket.
•Reusethesaddlebandandthescrews.
•Reusethe S.T. support.
Photo 19-1
Photo 19-2
Photo 19-3
Photo 19-4
Scale trap
Water pump
Nut(G1")
S.T. support
Screws
Saddle band
Pipe (Water pump
- DHW tank)
Nut(G3/4"),
Gasket(G3/4")
Pipe (Tank - P-HEX
(W-W))
Screws
Plate (under P-HEX
(W-W))
Screwfixingthe
S.T. support
Nut(G3/4")
Pipe (W.P. - Tank)
Quickconnection
clip
Water pump
Screw(right
side)
Screwfixing
the S.T.
support
Pipe
(W.P. - Tank)
Gasket(G1")
Screw
(rightside)
OCH570C