Bedienungsanleitung Cointra Thermex IF (Seite 11 von 12) (Englisch)

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7.3.6. Remote control panel (Fig. 7)

By using button "Power" on the control panel you may vary power modes between

"Single Power" and "Double power". Button "Setting" corresponds to key on the control

panel, button "Timer" corresponds to button , button “On/Off” corresponds to . By using

arrows you may set parameters.

7.4. PCD – protective cutout device

If PCD comes to operate when the EWH is in service, to reset it you have to press button

on PCD. If in this case PCD repeatedly comes to operate, you have to call for a specialist at the

service center to remove the causes of its operation.

If you are not using the EWH in winter and there is a possibility of freezing of the water

mains and the water-heater itself, it is recommended to turn off power supply and drain water

from the EWH in order to avoid damage to the inner tank.

7.5. Maintenance (ТО)

In the course of maintenance you should examine the tubular electric heating element

(TEHE) for scale. At the same time, you have to remove residues, which can form in the EWH

lower part. If scale forms on TEHE, you can remove it with special cleaners or mechanically. It

is recommended, one year after the EWH was connected, to invite employees of a specialized

organization for the initial maintenance and then, judging by the intensity of scaling and residue

formation, they may determine the dates of next maintenance. This action will prolong the

service life of the EWH as much as possible.

Warning: Accumulation of scale on TEHE may cause damage to it.

Note: This warranty does not cover the damage caused by scaling to TEHE. Regular

maintenance is beyond the scope of the Manufacturer’s and Seller’s warranty

responsibilities.

For maintenance, proceed as follows:

- disconnect the EWH from the power supply;

- allow hot water to cool or drain it through a mixer;

- shut off cold water supply to the EWH ;

- screw out the safety valve or open the drain valve;

- put a rubber hose on the cold water branch pipe or on the drain valve, directing its other end

piece towards a sewer system;

- open the hot water tap on the mixer and drain water from the EWH through a hose to a sewer

system;

- remove the protective cover, disconnect wires, turn out and take the bearing flange out of the

case;

- remove scale from TEHE, when necessary, and residues from the tank;

- reassemble and fill the EWH with water and turn on the power.

In the models provided with a drain branch pipe, it suffices to cut off cold water supply to

the EWH, turn out a blank plug on the drain branch pipe and open a hot water tap. When the

water is completely drained, you may open for a while cold water supply to the EWH to

additionally rinse the tank.

When the EWH is maintained by employees of a specialized organization, the relevant

marks should be made in the service card.

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