Cuenod NC12 B117, Руководство по эксплуатации

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07/2009 - Art. Nr. 13 022 182A 18
Servicing
Maintenance
Burner and boiler servicing must only
be carried out by a professionally
qualified heating engineer. The
system operator is advised to take
out a maintenance contract to
guarantee regular servicing.
• Switch off the power supply before all
maintenance and cleaning work.
• Use original spare parts.
Work recommended as part of annual
burner maintenance:
- Burner test run, input measurement in
the boiler room
- Clean the combustion components
and replace defective parts if
necessary
- Clean the blower fan wheel and check
the pump coupling
- Check the fuel oil nozzle, replace if
necessary
- Check the fuel oil filter, replace if
necessary
- Visual inspection of the fuel oil hoses;
replace if necessary
- Clean the gas filter; replace it if
necessary
- Visual inspection of the burner's
electrical components; eliminate
malfunctions if necessary
- Check burner start characteristics
- Leakage test
- Burner safety devices function check
(air pressure/gas pressure switches)
- Flame detector and control unit
function check
- Start burner with gas operation
- Check the gas flow
- Correct the adjustment values if
necessary
- Start burner with fuel oil operation
- Check the fuel oil pressure and
vacuum pressure on the burner pump
- Draw up a measurement report
General checks
- Emergency stop button function check
- Visual inspection of fuel oil lines in the
boiler room
Checking and setting combustion
head
• Disconnect the ignition cables on the
igniter.
• Disconnect the cables from safety
valve Y16 , and from cell V1 .
• Disconnect flexible hose pL .
• Remove hose/solenoid valve
assembly Y16 from the nozzle line
(connection M ).
• Remove the 3 screws W .
• Remove the cover.
• Loosen lock nut
C on the gas bend.
• Tighten spherical-head screw E
(anticlockwise) to remove the head.
• Check the position of the ignition
electrodes using the diagram.
• During assembly, check that O-ring J2
is fitted and correctly positioned.
• Unscrew spherical-head screw E
(clockwise) to secure the head.
• Fit the grommets onto the cover.
• Fasten the cover (3 screws
W ).
• Refit hose/solenoid valve assembly
Y16 to the nozzle line.
• Tighten the ignition cables and
connect them to the igniter.
• Connect the cables from the cell, the
safety valve and flexible hose pL to
the cover.
• Check it is airtight.
Gas filter replacement
• The filter element of the multiblock
must be checked at least once a year
and replaced if clogged.
• Loosen the screws of the filter cap on
the multiblock.
• Remove the filter element and clean its
housing.
• Do not use any pressurised cleaning
products.
• Replace the filter element with a new
element.
• Screw the cover back into place.
• Reopen the manual shut-off valve.
• Check it is airtight.