Inspection, Maintenance, Servicing; Electrical Connection - Panasonic PAW-TA20C1E5C Technisches Handbuch

PAW-TA20C1E5C

11. INSPECTION, MAINTENANCE, SERVICING

a) During heating, the excess water from the outlet of the safety valve must drain visibly. When fully heated up (about 80°C),
the excess water volume is about 3.5% of the storage tank volume.
The function of the safety valve should be checked regularly. When lifting or turning the safety valve testing knob to the
"Test" position, the water must flow unhindered out of the body of the safety valve and into the drainage funnel.
Warning: The cold water inlet plumbing and parts of the storage tank connection fittings can become hot as a result. If the
storage tank is not heated up or if no hot water is extracted then no water should drip out of the safety valve. If this is the
case then either the water pressure exceeds the permissible value or the safety valve is defective. If the water pressure is
higher than permitted, a pressure reduction valve must be used.
b) In the case of extremely hard water, the boiler scale accumulating in the storage tank's inner boiler as well as the freely
deposited lime-scale must be removed by a professional after one or two years of operation. Cleaning is carried out by
removing the flange opening of the heating flange and cleaning the storage tank. When installing the flange, a new seal
is to be used. The bolts must be tightened crosswise with a torque of 23 Nm to 25 Nm. The specially enamelled inner
container of the hot water heater must not come into contact with boiler scale solvent. Do not use with a de-calcification
pump! Afterwards, the device must be thoroughly rinsed and the heating up process is to be observed as per the initial
commissioning.
c) In order to make a legitimate claim under the guarantee provided by the manufacturer, the in-built protective anode
requires a documented inspection by a specialist at a maximum interval of two years of operation. For service work, it
is also appropriate to open the cleaning and service flange, in order to check the tank for the possible ingress of foreign
bodies and impurities and to remove them if necessary.
d) Do not use any scouring agents to clean the device and do not use any paint thinners (such as Nitro, trichloride, etc.). It is
best to clean it using a damp cloth with a few drops of a liquid household cleaning agent. In hospitals and other public
buildings, it is essential to comply with the prevailing regulations for cleaning and disinfection.
e) The storage tank must be used exclusively in accordance with the conditions set out on the rating panel. In addition to
the legally recognised national guidelines and standards, the connection conditions of the local electricity and water
works as well as those set out in the operating and assembly instructions must be complied with.
f ) The area in which the device is operated must be frost-free. Installation of the device must be carried out in a place where
one might reasonably expect it to be, i.e. the device must be easily accessible in case of servicing, repairs or in case it needs
to be replaced. In case of extremely hard water, we recommend the upstream installation of a commercially available
de-calcification device as natural calcification does not provide grounds for invoking the manufacturer's guarantee.

12. ELECTRICAL CONNECTION

General information
In addition to the legally recognised national guidelines and standards, the connection conditions of the local electricity and
water works as well as those set out in the operating and installation instructions must be complied with and must only be
carried out by a licensed professional. The mandatory protection measures must be carried out carefully, so that in case of a
malfunction or outage of the water heater's electrical power supply no other electrically powered devices are affected (e.g.
deep freezer, rooms used for medical purposes, intensity maintenance devices, etc.).
In rooms with baths or showers the device must be installed in compliance with the relevant national legislation and
regulations (e.g. from the ÖVE-SEV or VDE).
The technical connection conditions of the energy supply company responsible must be adhered to without fail.
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