2916050
28
GB
Start-up, calibration and operation of the burner
5.4
Servomotor
The servomotor gives simultaneous regulation of the air damper
through the adjustable profile cam 2)(Fig. 34) and the pressure
controller (Fig. 14 on page 17).
It rotates by 130° in approx. 35 s.
The factory settings must not be changed for the first firing, just
check that they comply with the details below.
Servomotor
2
Adjustable profile cam
3
Adjustment screws for cam starting profile
4
Adjustment fixing screws
5
Adjustment screws for cam and profile
To open the servomotor, remove the screws and pull the cover out-
ward (see Fig. 35).
Fig. 34
D1229
WARNING
Fig. 36 shows how the servomotor is released to
manually check there is no binding though its mo-
tion.
WARNING
Don’t release the button indicated in the Fig. 37: the
synchronization of the cams made in factory would
be changed.
Fig. 35
D2277
Fig. 36
D2585
YES
Fig. 37
NO
