Drazice TO-20 Руководство по эксплуатации и установке - Страница 12
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2.7 INSPECTION, MAINTENANCE & CARE FOR THE APPLIANCE
During the heating process the water that increases its volume during the heating must drip
off the safety valve outlet (in non-pressurised connection this water drips off the combination
faucet valve). In full heating (about 65
capacity. The function of the safety valve has to be checked regularly (based on the
information contained in the attached safety valve manual). In common operation, such
a check needs to be implemented at least once a month, and after each heater shutdown that
exceeds 5 days.
Caution! In doing so, the cold water supply pipe and the connection fitting of the tank may
get heated! If the hot water heater does not work, or if hot water is not withdrawn, no water
shall drip off the safety valve. If water drips, then the pressure in the supply piping is either
too high, or the safety valve is defective. Please call a specialised plumber immediately!
If water contains too many minerals, an expert has to come to remove the scale that forms
inside the tank, as well as free sediments. This has to be performed after one or two years of
operation. The cleaning is carried out through the hole in the flange by: draining the boiler,
dismantling the flange lid and cleaning the tank. A new sealing has to be used for re-fitting.
Since the inside of the heater has special enamel, the surface of which must not get in contact
with a scale removing agent - do not work with a lime pump. Remove the lime layer with
a timber and suck it off, or wipe it off with a clout. After that, the appliance must be rinsed
thoroughly and the heating process is checked the same as during the initial putting in
operation. Do not use any abrasive cleaning agents or dye thinners to clean the outer shell of
the heater (such as cellulose thinner, trichlor, and the like). For cleaning use a wet clout and
add a few drops of liquid cleaning agent for household applications.
Repetitive water heating causes limestone sediment on both the enamelled tank walls and
chiefly the flange lid. The sedimentation depends on the hardness of water heated, its
temperature, and amount of hot water consumed.
We recommend checking and cleaning the tank from scale and eventual replacement of the
anode rod after two years of operation. The anode life is theoretically calculated for two years
of operation; however, it changes with water hardness and chemical composition in the place
of use. Based on such an inspection, the next term of anode rod exchange may be determined.
Have the company in charge of service affairs clean and exchange the anode. When draining
water from the heater, the combination faucet valve for hot water must be open, preventing
occurrence of under-pressure in the heater tank which would stop the water from draining.
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C) the volumetric water gain is approx. 3% of the tank
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