Sime Format.zip 30 OF S 25 Manual Del Usuario página 88

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4.6 DISMANTLING THE CASING
The casing may be removed completely to
PT
facilitate boiler maintenance, as shown in
fig. 23.
GB
GR 4.7 CLEANING AND
MAINTENANCE
RO
Carry out the cleaning of the generator in
the following way:
RUS
– Turn the main switch off to stop electric
power reaching the boiler and close the
gas feed cock.
– Remove the outer casing and the gas
burner manifold unit . To clean the bur-
ner, blow in a jet of air, so as to remove
any dust particles that may have accu-
mulated.
– Clean the heat exchanger, removing any
dust or residue from combustion. When
86
cleaning the heat exchanger or the bur-
ners, chemical products or steel bru-
shes MUST NOT BE USED.
Make sure that the tops of the burners
with the holes are free from encrusta-
tions.
– Reassemble the items removed from
the boiler, making sure to follow the cor-
rect sequence.
– Check operation of the main burner.
– After assembly of all the gas connec-
tions, these must be tested for sound-
ness, using soapy water or appropriate
products. DO NOT USE NAKED FLAMES.
– Do not use calcium chloride to treat the
plastic component during generator
maintenance.
4.7. 1 Chimney sweep function (fig. 24)
To carry out the verification of combustion
1
in the boiler turn the selector and stop on
the position ( ) until the green/orange led
starts to flash intermittently.
From that moment the boiler will start func-
tioning in heating mode at the maximum
power, with switching off at 80°C and
restarting at 70°C.
Before activating the chimney sweep func-
tion make sure that the radiator valves or
eventual zone valves are open.
The test may be carried out also during hot-
water service functioning.
To do so it is enough, after having activated
the chimney sweep function, to take some
hot water from one or more cocks.
Even in this condition the boiler functions at
the maximum temperature always with the
primary controlled between 80°C and 70°C.
During the entire duration of the testing the
hot water taps must remain open.
After verifying the combustion the boiler
should be switched off by placing the selec-
2
Fig. 23