THERMEx Rif 7 O Bedienungsanleitung Seite 8

EN ATTENTION: accumulation of scale on TEH may cause its damage.
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Note: Damages to THE due to scale formation are not subject to warranty. Regular
maintenance is not included in the warranty of the manufacturer and the seller.
The following shall be carried out for maintenance:
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sending the other end down the drain;
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the hose;
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from the casing the removable flange;
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In models with drain pipe, it is enough to cut off the flow of cold water into the
EWH, unscrew the drain stub on drain pipe and open hot water tap. Once the water is
discharged, you can open for a while cold water supply in EWH for additional tank
washing.
When conducting EWH maintenance by forces of specialized organization mark
with the seal of organization performing maintenance shall be made in service coupon.
Malfunction
Hot water pressure from
EWH decreased. Cold
water pressure keeps at
the level.
Heating time increased
8
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,
Open hot water tap on mixer and drain water from the EWH through
Remove the protective cover, disconnect wires, unscrew and remove
Clean if necessary THEs from scale and remove residue from the tank;
Assemble, fill the EWH with water and power on.
12. POSSIBLE FAULTS AND REMEDIES.
Possible cause
Clogged inlet safety
valve
THE is covered with a
layer of sludge
Supply voltage decreased
How to fix
Remove the valve and clean it
in water
Remove the flange and clean
the THE
Contact power main operation
service