Mitsubishi Electric EHSC-MEC Service Manual page 81

DISASSEMBLY PROCEDURE
8. How to remove the plate heat exchanger (continued)
<ERSC series>
(7) Close the strainer valve and remove the G1" nut on the
water outlet side of the strainer valve using 2 spanners:
one to hold the strainer valve and the other to turn the
G1" nut. (Photo 8-2)
• When reinstalling the G1" nut, use a new G1" gasket.
• When the strainer valve handle is stiff, turn the handle
90 degrees clockwise mainly by using a spanner. (Photo
8-2)
• When opening or closing the strainer valve, ensure to
do so fully, not halfway.
(8) Remove the pipe (STR-W.C.) by detaching the quick
connection for the pipe and heat exchanger, then slide it
to the right. (Photo 8-2)
• When reinstalling the quick connection, use new O-ring.
• Refer to page 90 for how to attach and detach the quick
connection.
(9) Remove the TH2 thermistor from the thermistor holder.
(Photo 8-3)
(10) Remove the flare nuts on the gas and liquid pipes
under the hydrobox using 2 spanners: one to hold each
flare joint and the other to turn each flare nut.
(11) Remove the water coil cover by removing the 3 screws.
(Photo 8-2)
(12) Pull out the plate heat exchanger assembly from the
hydrobox by lifting it upward. (Photos 8-3 and 8-4)
OCH571D
PHOTOS/ FIGURES
Photo 8-3(ERSC series)
Plate heat exchanger Strainer valve
Photo 8-4
81
TH2 thermistor
Plate heat exchanger
assembly