hajdu Z30E, Installation And Owner'S Manual

Page: 17 / 84

EN
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reaches 110ºC-t, it breaks the circuit of
the heating.
The reducing device should be switched
on again only by a professional
technician, after eliminating the cause
of the defect.
7.2.2

Temperature controlling and
reducing device (built together)
Adequate operation is ensured by a
temperature
controlling-reducing
device set at a control temperature of
65 ºC, built in a common house. The
controlling temperature can be reduced
with the help of a setting button. The
setting button can be accessed after
removal of the cover of the fitting
house. SETTING CHANGE CAN ONLY BE
PERFORMED BY A PROFESSIONAL
TECHNICIAN! In case of failure of the
controller, the reducing device saves
the hot water tank against damaging
overheating in the way that before the
temperature of hot water stored
reaches 120ºC, it breaks the circuit of
the
heating. Re-switch of the
controlling device can only be
performed by a professional technician,
after eliminating the cause of the
defect.
7.3

E
,

Temperature reducing
device
In case of failure of the controller or in
case of normal operation before the
temperature of the water exceeds 110
ºC, it breaks the circuit of the heating.
Re-switch of the controlling device can
only be performed by a professional
technician, after eliminating the cause
of the defect.
7.3 Compact heater
In case of failure of the compact
heater, its replacement can be
performed after switching off the
water tank from the electric system,
fully emptying the water tank,
through removal of screws of the
closing cover.
Its reparation can only be performed
by a professional technician.
7.4. Active anode
As a supplementary accessory, the
hot water tank is equipped with an
active anode to protect it against
corrosion. The life expectancy of the
active anode depends on the
conditions of water and operation.
The state of the anode has to be
checked
during periodic
maintenance measures targeting
scale removal or
at least in every
second year.
The date of repeated check is
defined by the repair technician. If
the diameter of the anode shrinks to
10 mm at any points, it has to be
replaced.
The replacement of the active anode
can only be performed by a
contracted service shop (see the
commercial warranty!).
After the replacement of the active
anode, its earthing has to be set
according to its original state. It is
extremely important to ensure a
good metal contact between the
active anode and the earthing
screw.