Mitsubishi Electric EHSD-MED Service Manual page 70

DISASSEMBLY PROCEDURE
8. How to remove the plate heat exchanger (continued)
<E*SE series>
(1) Pump down the refrigerant circuit and close the stop valve on
the outdoor unit. (Refer to "12. Supplementary information".)
(2) Remove the front panel. (Refer to Procedure 1.)
(3) Swing the control box to the front. (Refer to Procedure 4.)
(4) Release the lead wires from the coated clamp. (Photo 8-7)
(5) Close the strainer valve (OFF). (Photo 8-7)
• When the strainer valve handle is stiff, turn the handle 90
degrees clockwise mainly by using a spanner. (Photo 8-7)
• When opening or closing the strainer valve, ensure to do so
fully, not halfway.
(6) Remove the water pump and the pump valve. (Refer to
Procedure 5.)
(7) Remove the joint (WC-PUMP) by removing the 2 screws, and
detaching the different diameter quick connection. (Photo 8-7)
• When reinstalling the different diameter quick connection,
use a new O-ring.
• Refer to Procedure 16 for how to attach and detach the quick
connection.
Photo 8-7
Screws
Water coil cover
Nut (G1-1/2")
Screw
Water pump
Nut (G1-1/2")
Pump valve
Screw
Plate heat exchanger
(inside)
Coated clamp
O-ring
Screws
TH2 thermistor
OCH712C
Joint
Different diameter
O-ring (W.C.-PUMP)
quick connection
Different diameter
quick connection
70
PHOTOS/ FIGURES
Screws
Booster heater
Pipe
(P.V.-B.H.)
Different diameter
quick connection
O-ring
Strainer valve
Same diameter
quick connection
O-ring