Shutting Down, Emptying; Inspection, Maintenance, Care - Atlantic Mileo Serie Manual De Instalación

11. SHUTTING DOWN, EMPTYING

If the water heater will be shut down or not used for an extended period of time, disconnect it completely from the mains (for
electric heating models) by turning off the power switch or circuit breaker.
In frost-prone areas the water heater must be empties before the cold time of year if the appliance will not be used for several
days.
Empty the service water - after closing the shut-off valve in the cold water supply line - by opening the drain valve on the
safety valve combination and simultaneously opening all hot water vales on the connected fittings.
Partial emptying can also be accomplished through the safety valve into the expansion water funnel (drip catch). For this the
safe valve should be turned to the "...M... " position.
Caution: Hot water can splash when emptying the tank!
When there is a risk of freezing, note that not only the water in the water heater and in the hot water lines can freeze, but
also in all cold water lines to the fittings and to the appliance itself. It is therefore recommended that you empty all water-
carrying fittings and lines (including the heater circuit = register) all the way back to the frost-safe section of the water utility
connection on the house.
When the water heater is restarted, be sure that it is filled with water and water runs out of the fittings without air bub-
bles.

12. INSPECTION, MAINTENANCE, CARE

a) During the heat-up phase the expansion water must drip noticeably from the safety valve drain. When fully heated
(~ 80° C) the expansion water makes up approximately 3.5% of the rated capacity of the water heater.
Regularly check for proper function of the safety valve. When lifting or turning the safety valve test knob to the "Test" po-
sition, the water must flow unhindered from the safety valve body into the funnel.
Caution: The cold water inlet and parts of the water heater fitting can get hot during this process. If the tank is not heated
up or hot water removed, no water is allowed to drip from the safety valve. If this is the case, either the water line pressure
is greater than the permitted value (in Switzerland more than 6 bar) or the safety valve is defective. If the water line pres-
sure is greater than permitted, a pressure reducing valve must be used.
b) If the service water has a high lime content, removal of the scale formed in the interior boiler as well as of the free lime par-
ticles must be performed by a technician every one to two operating years. Cleaning is done through the flange opening
– remove heater flange, clean tank, and use a new gasket when reassembling the flange. The screws must be tightened in
a cross pattern with a tightening torque of 18 Nm - 22 Nm. The special enameled inner container of the water heater must
never come into contact with scale solvent. Do not work with the decalcification pump! Then flush the unit thoroughly
and perform the heat-up cycle as for initial startup of the unit.
c) To make a proper warranty claim as provided for by the manufacturer, the installed sacrificial anode must have been
inspected and this inspection documented by a technician at intervals of no more than 2 operating years. During mainte-
nance 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.
The external current anode has a virtually unlimited life expectancy. Its function must be regularly checked by noting the
inspection lamp. This indicates two conditions:
green: System OK.
flashing red: Fault: Contact customer service! No corrosion protection is active!
The prerequisite for proper function is that the container is filled with water.
Conductivity of at least 150 µs is required to ensure that the external current anode functions properly.
d) Never use abrasive cleaners or paint thinners (such as nitro solvents, trichloro-ethylene, etc.) for cleaning the unit. Recom-
mended is a damp cloth with an additional few drops of liquid household cleaner. In hospitals and other public buildings,
the prevailing regulations for cleaning and disinfection must be observed.
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