How To Remove The Plate Heat Exchanger - Mitsubishi Electric EHST17D-VM2D Service Manual

DISASSEMBLY PROCEDURE
10. How to remove the plate heat exchanger (P-HEX)
(Refrigerant - Water)
<E*ST**C/D series>
(1) Pump down the refrigerant circuit and close the stop
valve at the outdoor unit side.
(Refer to 12. SUPPLEMENTARY INFORMATION.)
(2) Remove the front panel. (Refer to Procedure 1.)
Remove the left side panel. (Refer to Procedure 22.)
(3) Remove the control box. (Refer to Procedure 4.)
(4) Remove the DIV frame by cutting the band and removing
2 screws on it. (Photo 10-1) (E*ST20/30* series)
(5) Cut the bands bundling the pipes. (Photos 10-1 and 10-2)
(6) Remove the 2 flare nuts on the refrigerant piping on top
of the cylinder unit. (Photo 10-3)
Photo 10-2
Photo 10-3
Flare nuts
OCH714A
Photo 10-1
Screws
Screw
P-HEX
Bands
Screws
Note: The photos shown are of the EHST20D-VM6D
model with optional immersion heater.
Top panel
73
PHOTOS/ FIGURES
DIV frame
Continue to the next page.
Cable
strap
Fastener
Screw
DIV frame
Bands