Mitsubishi Electric EHST20C-VM2C.UK Service Manual page 68

From the previous page.
DISASSEMBLY PROCEDURE
(3) Remove the DIV frame by removing the 2 screws on it, and
remove the cushion by cutting the band. Then remove the
rubber by cutting the band. (Photo 8-2)
(4) Close (OFF) the pump valve. (Photo 8-2)
• When the pump valve handle is stiff, use a tool to grip the
handle and turn it carefully.
• When opening or closing the pump valve, ensure to do so
fully, not halfway.
(5) Detach the 2 quick connections (Inlet of booster heater and
outlet of P-HEX) (Photos 8-2 and 8-3)
• When reinstalling the quick connections, use new O-rings.
• Refer to Procedure 23 for how to attach and detach the
quick connection.
(6) Remove the pipe (W.C. - B.H.) by carefully pulling it to the
right. (Photo 8-2)
(7) Loosen the two G1" nuts and remove the pipe (B.H. - D.V.)
(Photo 8-3)
• When reinstalling the G1" nuts, use new G1" gaskets.
(8) Detach the quick connection (upper F.S.) to make the con-
nection part of pipe (to F.S.) free. (Photo 8-2)
• When reinstalling the quick connections, use a new O-ring.
• Refer to Procedure 23 for how to attach and detach the
quick connection.
(9) Hold the top of the booster heater using a pipe wrench and
turn the flare nut using a spanner. (Photo 8-2)
(10) Remove the 2 screws that hold the heater stay onto the
front frame (L). Lift the booster heater slightly and remove
the booster heater with the heater stay from the front
frame (L). (Photos 8-2 and 8-4)
(11) Remove the 3 screws that hold the heater stay onto the
booster heater, and remove the heater stay from the
booster heater. (Photo 8-2)
OCH570
PHOTOS
Photo 8-3
Booster heater
Quick connec-
tion of inlet of
booster heater
P-HEX
Quick connec-
tion of outlet of
P-HEX
Photo 8-4
Booster
heater
Front frame (L)
68
O-ring
O-ring