Mitsubishi Electric EHPT20Q-VM2EA Service Manual page 68

From the previous page.
DISASSEMBLY PROCEDURE
< Manometer >
(1) Remove the front panel.
(2) Open the pressure relief valve cap and lower the
tank internal pressure.(Photo 11-3)
(3) Close(OFF) the pump valve and strainer
valve.(Photo 11-7 and 11-8)
When the pump valve/strainer valve handle is stiff,
use a tool to grip the handle and turn it carefully.
When opening or closing the pump valve/strainer
valve, ensure to do so fully, not halfway.
(4) Install the drain cock hose at the drain cock of the
booster heater inlet (lower right), and drain
water.(Photo 11-9)
GCH15010
Photo 11-9
Photo 11-7
Photo 11-8
drain cock
hose
68
PHOTOS
pump valve
pump valve
strainer valve
strainer valve