How To Remove The Plate Heat Exchanger - Mitsubishi Electric EHST20C-VM6HB Service Manual

DISASSEMBLY PROCEDURE

10. How to remove the plate heat exchanger

(1) Remove the front panel. (Refer to Procedure 1.)
(2) Pump down the refrigerant circuit and close the
stop valve at the outdoor unit side. (Refer to 1.
SUPPLEMENTARY INFORMATION.)
(3) Remove the control box. (Refer to Procedure 4.)
(4) Cut the bands and remove the pump frame. (Photo 10-1)
(5) Cut the bands bundling the pipes. (Photos 10-2, 10-3)
(6) Remove the 2 flare nuts on the refrigerant piping on top
of the cylinder unit. (Photo 10-)
(7) Close (OFF) the strainer valve handle (under).
w When the valve handle is stiff, remove the handle and
turn the vertical stem 90 degree mainly by using a
spanner. (Photo 5-)
(8) Remove the G1" nut at the booster heater side of the
flexible hose. (Photo 10-2)
w When reinstalling the G1" nut, use a new G1" gasket.
(9) Remove the G1" nut under the strainer valve. (Photo 10-2)
w When reinstalling the G1" nut, use a new G1" gasket.
(10) Remove the 4 screws fixing the plate heat exchanger.
(Photo 10-)
Flare nuts
Photo 10-3
Bands
OCH531
Photo 10-1
Photo 10-2
Bands
Screws
Plate heat
exchanger
Strainer
valve handle
(under)
Strainer
valve
Top panel Gasket (G1")
Screws
Nut (G1")
(under the strainer valve)
77
PHOTOS
Bands Pump frame
Screw Fastener
Nut (G1")
Band
Gasket (G1")
Screw
Band