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8.4
Pump pressure
The pump leaves the factory set at 12 bar.
To change it act on pump pressure adjust screw 5) (Fig. 9).
8.5
Combustion head setting
Combustion head adjustment varies depending on burner de-
livery.
To adjust, proceed as follows:
turn adjusting screw 2) (Fig. 16) clockwise or anticlockwise
until the notch on the regulating rod 3) is lined up with the
outer surface of the nozzle-holder assembly 1).
In the example, the regulating rod 3) is set to setpoint 2; this
means the burner is adjusted for an output of 4.9 Kg/h with
a pump pressure of 12 bar using a 1.25 GPH nozzle, as
indicated in the reference Tab. A page 17.
D9547
8.6
Air damper adjustment
To adjust the air damper proceed as follows:
loosen nut 5) (Fig. 16) and set the valve by adjusting the
screw 4).
When the adjustment is complete screw down nut 5).
When the burner stops, the air damper closes au-
tomatically until maximum negative flue pressure
is 0.5 mbar.
WARNING
20013962
Operation
8.7
To reach the electrodes, proceed as described in the paragraph
9.3 "Maintenance position" page 22.
Do the following make the regulation:
lean the diffuser disc-holder assembly 3) (Fig. 17) on the
For prospective adjustments of the electrodes assembly 5),
2
4
5
1
3
1
Fig. 16
8.8
To position the optical fibre, you must proceed as follows:
insert optical fibre 1) (Fig. 17) in the diffuser disc support
Tighten screw 4) carefully to hold optical fibre 1) in place.
18
GB
Electrodes adjustment
nozzle-holder 2) and lock it by screw 4).
loosen screw 6).
MEASURES MUST BE RESPECTED.
WARNING
5
6
2
4
3
Positioning optical fibre
assembly 3), making sure it is pushed in all the way.
3
± 0.3 mm
1
5.5
± 0.3 mm
0
4.5
– 0.5 mm
D9548
Fig. 17
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