DISASSEMBLY PROCEDURE
PHOTOS/FIGURES
78
OCH714D
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Photo 8-3
Quick connec-
tion of inlet of
booster heater
Quick connec-
tion of outlet of
P-HEX
O-ring
Booster heater
O-ring
P-HEX
(3) Remove the DIV frame by removing the 2 screws on it.
(Photo 8-2) (Only E**T20/30* series)
Remove the DIV frame by cutting the band and removing
the 4 screws on it. (Photo 10-6) (Only ERST17D-***BD
model)
(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 25 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) Remove the pipe (B.H. - D.V.) by carefully pulling it to the
top. (Photo 8-2)
(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 25 for how to attach and detach the
quick connection.
From the previous page.
Screw
Fastener
Photo 8-2
Pipe (W.C. - B.H.)
O-ring
Heater stay
P-HEX
Booster heater
Screw
Quick connection of
inlet of booster heater
Quick connection
of outlet of P-HEX
Pump valve
Front frame (L)
O-ring
O-ring
Pipe (B.H.-D.V.)
