Air Vent (Automatic); How To Remove The Expansion Vessel - Mitsubishi Electric EHSC-VM2B Service Manual

DISASSEMBLY PROCEDURE
10. How to remove the manometer / pressure relief valve / air
vent (automatic) (Continued)
<Air vent (automatic)>
(1) Remove the air vent with a flare joint using two spanners:
one to hold the flare joint and the other to turn the flare
nut.
(2) Remove the flare joint from the air vent. (Photo 10-6)

11. How to remove the expansion vessel

(1) Remove the front panel. (Refer to Procedure 1.)
(2) Swing the control box to the front. (Refer to Procedure 4.)
(3) Remove the flare nut using two spanners: one to hold the
flare joint and the other to turn the flare nut. (Photo 11-1)
(4) Remove the 2 screws on the metal support.
Note: To avoid dropping of the expansion vessel, hold the
expansion vessel with the metal support by hand
when removing the last screw.
(5) Pull out the metal support. (Photo 11-1)
(6) Pull out the expansion vessel. (Photo 11-1)
(7) Remove the flare joint from the expansion vessel.
(Photo 11-2)
* When reinstalling the flare joint, use a new G3/8"
gasket.
Note: To avoid dropping of the expansion vessel, hold it
securely when removing it.
OCH532A
Photo 10-4
Pressure relief valve
Photo 10-5
Expansion vessel
Photo 10-6
Air vent
Photo 11-1
Photo 11-2
77
PHOTOS
Flare joint
Threads for application
of loctite
Air vent
Flare joint
Metal support Flare nut
Screws
Expansion vessel
Flare joint
Expansion vessel
Gasket G3/8"
Flare joint
Flare nut