Air Source Heat Pump Water Heater
40
Figure 16-1 Mg-Stick replacement
NOTICE!
The
Mg-Stick
must
be
replaced
by
professional
maintenance
personnel.
Directly
contact
your
local
dealer
or
authorized
service
center
of
SINCLAIR,
and SINCLAIR
will dispatch professional personnel to provide services.
16.4
Safety
Valve Maintenance
In
the
heating
process,
when
the
inner
container
of
water
tank
is
in
overpressure,
a
small
amount
of
water
may
be
discharged
through
the
safety
valve,
which
is a
normal
phenomenon.
However,
if a
large
amount
of
water is
discharged through the safety valve or even pipe vibration occurs and abnormal
noise
is
caused,
contact
Sinclair
authorized
maintenance
centers.
The
possible causes of this problem are as follows: The safety valve is damaged;
the water
replenishment pressure is higher than the maximum working pressure
(0.7MPa) of
the
water
tank,
which
occurs
generally
when
pressure
reduction
is
not performed
on
the
tap
water.
In
normal
conditions,
the
tap
water
pressure
is
around
0.3
MPa.
If
a
booster
pump
is
used
to
replenish
water,
the
water replenishment pressure may exceed 0.7 MPa. In this case, a
pressure reduction
valve
needs
to
be
added
to
the
tap
water
replenishment
pipe
to
reduce
water
replenishment pressure.
Open the safety valve
’s
handle to check whether it is blocked on a regular
(about once a month) basis. If it is blocked, contact the authorized maintenance