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st
The nozzle for the 1
stage of operation is the one lying beneath
the firing electrodes (Fig. 14).
Make sure that the electrodes are positioned as
shown in Fig. 14.
WARNING
Refit the burner to the slide bars 3)(Fig. 15) at approximately
100 mm from the sleeve 4) - burner positioned as shown in
Fig. 10 at page 16;
insert the ignition electrode cables and then slide the burner
up to the sleeve so that it is positioned as shown in Fig. 15.
Refit screws 2)(Fig. 15) on slide bars 3).
Secure the burner to the sleeve by tightening screws 1).
Connect the oil pipes again by screwing on the two connec-
tors 6)(Fig. 10 at page 16).
Reconnect the articulation 7) to the graduated sector 8).
When fitting the burner on the two slide bars, it is
advisable to gently draw out the high tension ca-
bles until they are slightly stretched.
WARNING
5.10
Servomotor
The servomotor (Fig. 16) provides simultaneous adjustment of
the air gate valve, by means of the variable profile cam, and the
gas butterfly valve. The servomotor rotates through 130 degrees
in 33 seconds.
Do not alter the factory setting for the 5 cams; simply check that
they are set as indicated below:
Cam I:
130°
Limits rotation toward maximum position.
When the burner is at max output the gas butterfly valve
must be fully open: 90°.
Cam II: 0°
Limits rotation toward the minimum position.
When the burner is shut down the air gate valve and the
gas butterfly valve must be closed: 0°.
Cam III: 30° (gas)
Adjusts the ignition position and the MIN output.
Cam IV: 30° (gas oil)
Adjusts the ignition position and the 1
Cam V:
90°
Determines when the 2
20035573
Installation
st
stage output.
nd
stage diesel oil valve opens.
D2995
D2997
D887
18
GB
Fig. 14
Fig. 15
Fig. 16
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