10/2010 - Art. Nr. 4200 1030 6900A
21
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. Depending on the
type of installation, shorter
maintenance intervals may be
necessary.
1. Turn off the power supply and protect
the system from accidental start-up.
2. Cut the gas supply.
3. Make sure there is no residual power in
the system and that the actions in points
1 and 2 have been completed.
4. Before opening the burner casing,
ensure that the fan motor has stopped
completely.
Failure to observe any of these
instructions will result in the risk of
death or injury!
• 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 fan wheel and the blower
- 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 monitor and automatic
combustion control unit function check
- Commissioning the burner
- Check the gas flow
- Correct the adjustment values if
necessary
- Draw up a measurement report
General checks
- Emergency stop button function check
- Visual inspection of gas lines in the
boiler room
Checking the combustion
components
• Loosen the 2 screws
S
to remove the
burner hood.
• Remove the 7 screws
W
to remove the
combustion components access
cover.
• Remove the combustion components.
• Check the ignition electrodes and the
ignition cable; replace if necessary.
• Clean the baffle plate.
• Check adjustments and settings
during assembly.
Cleaning the fan
• Disconnect the motor by unplugging it
from the power supply.
• Remove the motor.
• Thoroughly clean the fan.
• Do not use pressurised materials.
• Reassemble.
en