Toshiba HWT-601XWHM3W-ETR - Page 190

189
8 Expansion vessel
1)Perform the step 1-1, step 4, step 5-1, step 6.
2)Remove the Intermediate fixing plate.
(Ø4 × 8, 7 screws)
3)Remove the quick fastener at the Expansion vessel
connection port.
Remove the connection port of the expansion
vessel by rotating the overpressure preventive
valve.
4)Remove the fixing tank plate.
(Ø4 × 8, 2 screws)
5)Remove the Expansion vessel.
When installing the expansion vessel, please attach
the waterproof seal at the water connection.
9 Overpressure
preventive valve
1)Perform the step 1-1, step 5-1.
2)Remove the tube connecting Overpressure
preventive valve by cutting the cable-tie.
3)Remove the two quick fastener.
4)Remove the Overpressure preventive valve.
10 Air vent valve
1)Perform the step 1-1, step 5-1.
2)Remove the quick fastener connecting the Air vent
valve.
3)Remove the Air vent valve.
No. Exchange parts name Work procedure Remarks
To replace a water circuit part, first close the water
supply source valve and the valve of water pipe
connected to the hydro unit.
After the expansion vessel replacement repair,
open the water supply source valve and water
piping valve to pass water through the hydro unit,
and check that the expansion vessel connection has
no water leakage.
Expansion vesselExpansion vesselExpansion vessel
Rotating the
overpressure-
preventive valve
The Intermediate
fixing plate
Quick
fastener
The fixing
tank plate
The Intermediate
Qu
ic
k
fas
t
e
h
e
f
ixin
g
nk plate
When installing the
expansion vessel, please
attach the waterproof seal
at the water connection.
To replace a water circuit part, first close the water
supply source valve and the valve of water pipe
connected to the hydro unit.
The Overpressure preventive valve connection
uses an O ring for water seal. Be careful not to
scratch the O ring; otherwise, water leakage may
occur.
After the Overpressure preventive valve
replacement repair, open the water supply source
valve and water piping valve to pass water through
the hydro unit, and check that the Overpressure
preventive valve connection has no water leakage.
Overpressure
preventive valve
Quick fastener
The tube connecting
Overpressure
preventive valve
To replace a water circuit part, first close the water
supply source valve and the valve of water pipe
connected to the hydro unit.
The Air vent valve connection uses an O ring for
water seal. Be careful not to scratch the O ring;
otherwise, water leakage may occur.
After the air vent valve replacement repair, open the
water supply source valve and water piping valve to
pass water through the hydro unit, and check that
the air vent valve connection has no water leakage.
Air vent valveAir vent valve
Air vent valve