3330
8
GB
4.4
MAINTENANCE POSITION
Before performing maintenance on the burner, it is best to disconnect the system’s power supply.
ACCESSIBILITY TO THE NOZZLE, THE DIFFUSER DISC AND THE ELECTRODES IS MADE EASY IN 2 WAYS:
³
Pull the wires (2) from the control box and the
photoresistance (8) and undo the nut (9) from the
pump.
³
Loosen the screws (10) and extract the nozzle
holder (1) by turning it towards the right.
³
Remove the wires (2) from the electrodes, loo-
sen the screw (4, fig. 15, page 9) and extract
the diffuser disc support assembly from (3) the
nozzle holder assembly (1).
³
Screw up the nozzle (6) holding the nozzle
holder with the aid of a wrench.
³
Refit following the above procedure in the
reverse order.
³
Unscrew and remove the screw fastening it to
the flange to take the burner off the boiler.
³
Hook the burner onto flange (7), loosen screws
(5) and pull off the blast tube assembly (4).
³
Loosen screw (4, fig. 15, page 9) to remove the
diffuser disc support assembly (3) from nozzle-
holder assembly (1).
³
Unscrew fastening screw (4, fig. 15, page 9) all
the way so that you can pull optical fibre (8) out
from the diffuser disc support assembly (3).
³
Pull wires (2) out from electrodes.
³
Replace nozzle (6) and screw the new one on
properly, holding it as illustrated in figure 12.
³
Refit following the above procedure in the
reverse order.
WARNING
In the event of maintenance made to the diffuser disc-holder
assembly, screw the nut (9) as shown in the figure 13.
Fig. 11
2
8
3
9
10
6
1
4
3
2
5
6
7
E9286
1
Fig. 12
8
S7948
TIGHTEN WITHOUT MOVING
BACKWARDS TO THE END
D5684
9
Fig. 13
