How To Remove The Plate Heat Exchanger - Mitsubishi Electric EHSD-MEC.UK Service Manual

DISASSEMBLY PROCEDURE

8. How to remove the plate heat exchanger

(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) Remove the water pump and the pump valve. (Refer to
Procedure 5.)
(4) Remove the expansion vessel. (Refer to Procedure 11.)
<ERSC series>
(5) Remove the saddle band (upper the pump) by removing
the 2 screws. (Photo 8-2)
(6) Remove the pipe (W.C.-W.P.) and the pipe (P.V.-B.H.) by
detaching the quick connections.
• When reinstalling the quick connections, use new O-rings.
• Refer to page 77 for how to attach and detach the quick
connection.
Photo 8-2(ERSC series)
Expansion vessel
Screws
Water coil cover
Saddle band
(upper the pump)
Nut (G1")
Water pump
Nut (G1")
Pump valve
Plate heat exchanger
(inside)
Screw
O-ring
Quick connection
Strainer valve
OCH571
Quick
Pipe
connection
(W.C.-W.P.)
O-ring
Screws
O-ring
66
PHOTOS
Photo 8-1
Water pump
connector (CNP1)
Earth cable
Lead
wire
Cable strap Coated clamp
CNPWM
connector
Cable
clamps
Cable strap
Booster heater
Pipe
(P.V.-B.H.)
Quick connection
O-ring
Gasket (G1")
Pipe
(STR-W.C.)
Nut (G1")