Rendamax R2000 Series, Техническая документация инструкция

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DOC2012/2000en
45
Each burner bar can be withdrawn from its injector.
With the burners removed check the injectors for any blockage and if necessary clean in spirit.
Remove the air guides located beneath the burners and clean. Check the setting of the modulating
combustion air damper. See fig. 20, there should be
a gap of 4 mm with the damper in the fully
closed position against the stops.
Check the condition of the ignition and sensing electrode at the right hand end of the burner assembly.
There should be no burning of the metal tip and the ceramic should not be cracked.
Replace the burners starting with the pilot burner. Ensure that the shaped venturi end at each burner locates
properly over the injector and that the tab at the end of the burner bar locates fully in its notch.
The two right hand burners have handed tabs to ensure that they are fi tted in the correct position as they
have cross lighting parts.
Ensure that the insulation covered stainless steel channels are correctly positioned as they guarantee the
correct location of the burners. The front tip of the channels locates over the burner location tabs, see Fig. 25.
Ensure that the ignition and sensing electrodes are correctly positioned as shown in Fig. 26.
If the position or gaps are not correct the electrodes must not be bent. In that case the electrodes have to be
replaced.
Remove the down draught diverter by releasing two screws in either side and remove the fl ueway baffles from
the top of the heat exchanger. Inspect the heat exchanger for deposits and clean if necessary, check condition
of the copper fin tubes and fins and replace flueway baffl es.
Check the condition of the boiler for any possible corrosion damage. Also check the condition of the combustion
chamber insulation panels, replacing if necessary.
With the burner trolley removed each individual burner bar can be removed and cleaned. With the exception
of the right hand burner bar, this is done by first removing the insulation covered stainless steel channels,
located at the front and rear of the burner assembly, and then removing the burner bar by first lifting the end
of the burner out of its locating notch and then withdrawing the burner from its injector (avoid damaging the
electrodes when removing the pilot burner assembly).
Fig. 25 Burner assembly
1 Insulation covered stainless steel
channels
2 Notches to go over gas inlet pipe
3 Burner
location tabs
4 Burner assembly frame
5 Withdrawal direction from holder and
injector
6 Lift burner out of notch at end
7 Ignition
electrode
8 Sensing electrode