Mitsubishi Electric EHPT20Q-VM2EA Service Manual page 71

DISASSEMBLY PROCEDURE
(5) Close(OFF) the pump valve and strainer
valve.(Photo 12-6 and 12-7)
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.
(6) Install the drain cock hose at the drain cock of
the booster heater inlet (lower right), and drain
water.(Photo 12-8)
(7) Remove the flow sensor. (Photo 12-1 and 12-8)
・Draw out the quick connection to the front side
and remove.
・Be sure to set the flow sensor so that the direction
of flow arrow is facing downwards.
・When replacing the flow sensor, be sure to use a
new O-ring.
The direction that the water flows through.
(There is a downward arrow.)
Flow sensor 1
Photo 12-8
drain cock
GCH15010
hose
PHOTOS
Photo 12-6
Photo 12-7
< pump valve and strainer valve >
or
Open
71
pump valve
pump valve
strainer valve
strainer valve
or
Close