Cleaning And Maintenance - Sime Planet 25 OF Manual De Instrucciones

NOTE: After assembling all the gas con-
nections, a test for gas tightness must be
carried out using soapy water or special
products. Do not use naked flames.
The conversion to different gas must be
carried out exclusively by authorized tech-
nical personnel.
4.6 DISASSEMBLY OF
EXPANSION VESSEL
Before desassembly the expansion vessel,
empty the boiler of water. After the assem-
bly ensure that the expansion vessel is pre-
loaded at a pressure of 0.8 to 1 bar.
4.7 REMOVAL OF
OUTER CASING
It is possible to completely disassemble the
shell for an easy maintenance of the boiler
following these simple instructions (fig. 32):
– Remove the two screws locking the front
panel to the sides.
– Pull the front panel (5) forwards so as to
release it from the slot-in pins located on
the sides.
– Unscrew the two screws fixing the instru-
ment panel to the sides.
– Unscrew the four screws fixing the sides
to the instrument panel support.
– Push the sides (3) and (4) upwards, sli-
ding them out of their slots.
4.8 CLEANING AND
MAINTENANCE
At the end of each heating season, it is
essential to have the boiler thoroughly
checked and cleaned out.
Proceed as follows:
– Turn the main switch off to stop electric
power reaching the boiler and close the
gas feed cock.
– Remove the outer casing as described in
section 4.7.
– Remove the gas burner manifold unit
(fig. 31).
– To clean the burner, blow in a jet of air, so
as to remove any dust particles that may
have accumulated.
– Clean the heat exchanger, removing any
dust or residue from combustion.
– When cleaning the heat exchanger or
the burners, chemical products or steel
brushes MUST NOT BE USED.
– Make sure that the tops of the burners
with the holes are free from encrusta-
tions.
– During burner disassembly and assem-
bly, be very careful not to exert force on
the delicate items, such as the ignition
and sensing electrodes.
– Reassemble the items removed from
the boiler, making sure to follow the cor-
rect sequence.
– Check the chimney to make sure that
the flue is clean.
– Check operation of the equipment and
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.
Preventive maintenance and checking of
efficient operation of equipment and
safety devices must be carried out exclu-
sively by authorized technical personnel.
4.8. 1 Chimney sweep function "25 BFT"
To carry out the verification of combustion
in the boiler, turn the selector and stop on
the position ( ) until the orange led (
starts to flash intermittently (fig. 33).
From that moment the boiler will start func-
tioning in heating mode at the maximum
power (20,000 kcal/ h), with switching off
FLASHING ORANGE LED
SPIA GIALLA INTERMITTENTE
KEY
1 Self-tapping screw
2 Rear panel
3 L.H. side panel
4 R.H. side panel
5 Front panel
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 functioning. To do so it is enough,
after having activated the chimney sweep
function, to take some hot water from one
or more taps; after a few minutes the
request of the hot-water service feeler is
activated and it automatically switches on
the led ( ). Even in this condition the boil-
er 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 selector on the (OFF) position; then
) return the selector to the desired function.
ATTENTION: After about 15 minutes the
chimney sweep function automatically
deactivates.
Fig. 32
Fig. 33
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