BaltGaz NEVALUX-5514 User Manual page 25

The mark about the instruction must be made in the Certificate of Installation and technical service. There should also
be a mark about the appliance's installation.
12. TECHNICAL SERVICE
The appliance's technical service is effectuated not less than once a year by a specialized service organization.
Works connected with technical service are not the manufacturer company's warranty liabilities and are
effectuated at the customer's cost.
The appliance's examination and treatment are effectuated by its owner.
During the technical service the following works are effectuated:
-cleaning of the main and ignition burners (including cleaning of the plug and the flame sensor);
-cleaning the heat exchanger from soot and cleaning (washing) the heat exchanger's pipes from scale deposit (if
necessary)
-cleaning and connecting the contacts;
-replacing the sealings in the gas and water systems;
-checking the gas and water systems' air-tightness;
-checking the thermo relay's (draught sensor's) operation;;
-lubrication of moving connections (if necessary);
-unscheduled cleaning of the appliance (including cleaning from dust on the appliance's inner units and details).
ATTENTION! The works for the appliance's technical service, connected with disassembling of its gas or
water pipelines must be effectuated only after it is completely switched off (the taps on water and gas lines by
the inlet into the appliance must be closed, the power element must be removed from the battery section).
.
12.1. Cleaning the main and ignition burner
In order to clean the main burner it is necessary to effectuate the following operations:
a) switch the appliance off;
b) close the gas stop valve, remove the casing (see p. 7.2.1,page 11), remove the main burner and disconnect the
manifold from it;
c) remove the dust from the burner's outer surfaces and from the manifold with a brush;
d) wipe the manifold and the nozzles with a moist rag;
e) remove dust from the inner channels of the burner's blades by a brush cleaner;
f) wash the burner with a soap solution, especially its blades' inner cavities with the help of a brush cleaner. Wash it
thoroughly in running water, dry it and put it back.
In order to clean the ignition burner it is necessary to effectuate the following operations:
а) switch the appliance off;;
b) close the gas stop valve, remove the casing (see p. 7.2.1,page 11), remove the ignition burner;
c) clean the electrodes of the plug and flame sensor from soot deposit and clean up their contacts;
d) screw out the nozzle from the ignition burner;
e) wash the ignition burner's inner cavity with a soap solution. Wash it thoroughly in running water, dry it and put it
back.
Keeping the burner clean will keep the heat exchanger from soot contamination and prolong its working
lifespan.
12.2 Heat exchanger cleaning
If the heat exchanger is contaminated, it is necessary to clean its surfaces where soot has appeared and clean
the heat exchanger's pipes where scale deposit has appeared.
In order to remove soot it is necessary to:
a) Remove the heat exchanger and put it into hot soap solution or a solution of any other synthetic detergent;
b) Keep it in soap solution for 10-15 minutes and clean its surfaces by means of a soft brush, then wash it under
a strong stream of water;
c) Repeat all the process if necessary.
In order to remove scale deposit it is necessary to:
a) Remove the heat exchanger and put it into a tank;
b) Prepare a 10% solution of citric acid(100 g of powder citric acid for 1 l of warm water);
c) Fill in the heat exchanger's pipeline with the prepared solution. Leave the solution there for 10-15 minutes,
then drain the solution and wash the pipeline thoroughly with water;
d) Repeat all the process if necessary.
12.3. Cleaning and connection of the contacts
During the technical service clean up the contacts of the thermo relay (draught sensor), the battery section, the micro
switch and electromagnetic valves if necessary. All contacts must not have oxidations and be securely connected.
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