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Praktik 80 V
Инструкция по эксплуатации Страница: 23

Thermex Praktik 80 V [23/52] Possible faults and remedies

The following shall be carried out for maintenance:

Turn off EWH power;

Cool hot water or discharge it through the mixer;

Cut off supply of cold water into EWH;

Unscrew the relief valve or open drain valve;

To put on the cold water supply inlet or discharge valve a rubber hose, sending the other end down

the drain;

Open a hot water tap on mixer and drain water from the EWH through the hose;

Remove the protective cover, disconnect wires, unscrew and remove from the casing the

removable flange;

Clean if necessary THEs from scale and remove residue from the tank;

Assemble, fill the EWH with water and power on.

When conducting EWH maintenance by forces of specialized organization mark with the seal of

organization performing maintenance shall be made in service coupon.

When conducting EWH maintenance by forces of special organization the appropriate mark shall be

made in the warranty card. When replacing the magnesium anode independently by the consumer

magnesium anode purchase receipt shall be attached to present manual.

Specifying security measures

Electrical safety and corrosion protection of EWH are guaranteed only if there is an effective

earthing in accordance with applicable electric installation rules and regulations.

When installing and operating EWH the following is not allowed:

To power EWH if EWH is not filled with water.

To remove the protective cover when the power is on.

Use EWH without grounding or use water pipes as grounding.

To connect EWH to water supply with pressure exceeding 0 6 MPa. (If pressure in the supply

line is more than 0.6 MPa, an appropriate pressure reducing valve shall be installed at cold

water inlet ahead of safety valve (not supplied) to reduce water pressure to normal).

Installation of pressure reducing valve between EWH and relief valve is forbidden.

To connect EWH to the water supply without safety valve.

To drain water from EWH with power switched on.

To use spare parts not recommended by the manufacturer.

To use water from the EWH for cooking.

To use water containing impurities (sand, small stones), which might lead to EWH and

safety valve breakdown.

To modify design and installation dimensions of EWH brackets.

Water freezing in the appliance is prohibited because it causes its malfunction which is not a warranty

case.

EWH is not intended to be used by persons with limitations of health, sense or mental limitations, as

well as persons who are not able to use the EWH, except when it happens under the supervision or

instructions by a person responsible for EWH safety. Children can use EWH only under the

supervision of persons who know how to operate it safely. During EWH operation, it must be

inspected regularly for proper health (absence of dripping, burning smell, wiring sparks, etc.). In the

EN EN

case of long interruptions in water heater operation, water supply failures, EWH must be disabled and

cold water inlet valve must be shut off.

Always be aware that there is a risk of hot water scalding and electric shock.

Possible faults and remedies

If an operational fault occurs EWH shall be disconnected from the mains, water supply shall be cut off.

Apply to a Service center.

Thermal switch tripped or

not on.

Powered EWH does

not heat water.

No backlights

of indicator lamps.

Disconnect EWH from the mains,

remove EWH protective cover,

press the safety button until you

hear a click (fig. 3), place the

cover and turn on power.

Power cord is damaged.

There is no voltage in the

mains

Contact power supply operation

service

RCD (if any) tripped

Push RCD restart button.

Check voltage.

Frequent tripping of

thermal switch

The set temperature is close

to the limit

Turn the thermostat control to

decrease temperature (–)

Thermostat tube is covered

with sludge

Remove the flange and gently

clean the pipe from the sludge

Heating time increased

THE is covered with a layer

of sludge

Remove the flange and clean

the TEH

Supply voltage decreased

Contact power main operation

service

Fault

Hot water pressure

from EWH decreased.

Cold water pressure

keeps at the level.

How to fix

Remove the valve and clean it

in water

Possible cause

Clogged inlet safety valve

22 23

Thermex Praktik 80 V [23/52] Possible faults and remedies

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