hajdu ZV80ErP Installation And Owner's Manual page 29

EN
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.
IN CASE OF NEGLECTING THE ABOVE INSTRUCTIONS THAT CAUSES DAMAGE
TO SAFETY AND USAGE FEATURES OF THE HOT WATER TANK, YOU LOSE
YOUR GUARANTEE AND WARRANT RIGHTS.
8.6. Scale removal
Depending on the quality of the water, scale deposition may occur on the
heater or on the tank. The scale deposited on the heater increases the
probability of heater failure, so it has to be cleaned from scale in every
second year.
The removal of scale is considered to be a maintenance activity, it is not part
of activities under guarantee.
As this activity required opening the electric fitting, the checks of the
temperature controlling/reducing device, the heater and electric connections
should also be performed in the same time.
THE CHECK CAN ONLY BE PERFORMED BY A CONTRACTED SERVICE SHOP.
The necessity of cleaning the internal tank has to be checked at removal of
the mounted closing cover. During cleaning, one has to take care so that the
protecting cover remains intact.
29