hajdu Z100ErP, Installation And Owner'S Manual

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9.3 Descaling
Depending on the quality of water, scale may deposit on the radiator and the
tank, whereby descaling should be performed every two years. Descaling re -
quires the emptying of the tank, the disconnection of the electrical circuit and the
removal of the service cover. After removing the service cover, it is recommended
to perform reassembling using a new sealing. When cleaning, avoid damaging the
protective surface finish. (Figure 10)
Descaling is considered to be part of the maintenance, and it does not belong to
the activities covered by guarantee. However, due to the necessity of disconnect -
ing the circuit, putting back into operation must be performed by an authorised
service station (along with the review of the electrical connections).
9.4 Limiter
Since its replacement requires the disconnection of the electrical circuit, the con-
tainer must be powered off.
9.5 Radiator
Its replacement requires the emptying of the tank, the disconnection of the elec -
trical circuit and the removal of the service cover. After removing the service cov -
er, it is recommended to perform reassembling using a new sealing.
The repair must be executed by a professional.
9.6 Active anode
Its replacement requires the disconnection of the power supply; such replace -
ment requires the disconnection of the electrical circuit and the removal of the
service cover. After removing the service cover, it is recommended to perform re -
assembling using a new sealing .
The technician determines the time of the next inspection. If the diameter of the
anode decreases by 10mm anywhere, it must be replaced. After replacement
of the anode, its earthing must be implemented according to the original state.
Adequate metal-through connection between the active anode and the earthing
bolt is essential .
9.7 Defrosting
Taking the appliance out of service requires the removal of power, and the total
emptying of the container.
When putting back into operation, refill the appliance with water, before connect -
ing to the electrical network.
9.8 Summary of periodical inspections
Bimonthly: Biyearly:
check of safety valve Descaling
Active anode inspection
Radiator inspection
Check of hydraulic connections.
Check of the condition of electrical assemblies