Check, Maintenance, Care; Malfunctions - Austria Email SISS 350 Instrucciones De Uso

9. Check, Maintenance, Care

a) During heating, the expansion water must drip visibly from the drain of the safety valve (the expansion water drips from
the valve of the mixing tap in the case of an unpressurised connection). The expansion water quantity is approx. 3.5 %
of the storage tanks content when fully heated (approx. 85° C).
The function of the safety valve must be checked monthly. When the safety valve test knob is lifted or turned to the po-
sition >Test<, the water must flow freely from the safety valve unit into the drain funnel.
Caution: thereby, the cold water supply and parts of the storage tank connector fittings may become hot. If the tank is
not heated up or hot water is withdrawn, then no water must drip from the safety valve. If this is the case, then either the
water line pressure is too high (install pressure reducing valve over 5.5 bar), or the safety valve is defect. Please call a
plumber immediately.
b) The boiler scale as well as the furring that forms in the internal boiler of the storage tank in the case of heavily calciferous
water must be removed by an expert after one to two years of operation. The cleaning is performed through the flange
opening. De-install heating flange, clean storage tank; a new seal must be used when the flange is mounted. Thereby,
the screws mist be tightened crosswise using a momentum of 18 to 22 Nm. The internal tank of the water heater with
special enamelling must not get in contact with boiler scale solvents. Do not use an antiliming pump! Finally, the device
must be rinsed thoroughly and the heating process be observed in the same way as during the first commissioning.
c) In order to be entitled to any claims for warranty, as provided on the side of the manufacturer, the installed reactive anode
requires documented checking by an expert in intervals of max. 2 years of operation. During maintenance works, it is
advisable to open the cleaning and service flange in order to check the tank for any possible washing-in of foreign objects
and contaminations, and to remove these if necessary. Practically, the external current anode has an unlimited service life.
Its function must be monitored regularly by means of the control lamp. This indicates two operating conditions:
Green: system ok
Red, flashing: malfunction: call customer service!
It is a condition for flawless functioning that the tank is filled with water.
d) Do not use any abrasive cleaning agents and paint thinners (such as nitro, trichlor etc.) to clean the device. The best
cleaning method is to use a damp cloth added with a few drops of a liquid household cleaner. In hospitals and other
public buildings, the prevailing regulations for cleaning and disinfection must be observed.
e) The tank can be used exclusively in accordance with the conditions specified on the rating plate. Aside from the legally
approved national regulations and standards, the connecting requirements of the local power company and waterworks,
as well as the Assembly and Operating Instructions must be complied with.
f) The room in which the device is operated must be free of frost. The assembly must be performed at a location that is
reasonably to be expected, i.e. it must be possible to access the unit without any difficulty for the purpose of necessary
maintenance, repairs and possible replacement. In the case of heavily calciferous water, we recommend the upstream
integration of a customary antiliming device, as the natural formation of boiler scale substantiates no claim for any war-
ranty issued on the side of the manufacturer. An appropriate quality of drinking water is required for operation of the hot
water tank, as set out in the national regulations and laws [e.g. ordinance by the Federal Minister on the quality of water
intended for human consumption, TWV; Federal Law Gazette II no. 304/2001].

10. Malfunctions

If the tank water is not heated up, please check whether the heat generator (oil, gas or solid fuel boiler) is fully
operative.
Please get in touch with either a licensed plumber or our customer service in the case that you are not able to rectify the
fault yourself. In many cases, experts only need to do a few little things and the storage tank or the system is working again.
In case of contact, please quote your model designation and manufacturing number, which you can find on the rating plate
of your storage tank.
Should a device, at the point of delivery, clearly display a malfunction, damage or other defect, this must not be fitted, ins-
talled or used in the system. Subsequent complaints regarding devices with an obvious defect which have been connected
and installed are expressly excluded under the warranty and guarantee.
Id.Nr.: 236921-13
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