COMBUSTION AIR ADJUSTMENT
The air gate is controlled by the motor-driven reducer.
The adjustment of the positions closed/1st stage open/
max. opening, is effected by acting on the cams turning
anticlockwise to increase the gate opening and clockwise
to decrease it.
By pushing button B, the gate drive system is disengaged,
freeing this for manual movements.
Cam
I
Max. air opening
Cam
II
Air closed, at stop (pre-set)
Cam
III
1st stage ignition air opening
Cam
V
Enabling 2nd stage valve opening
(At least 6° more than cam III)
COMBUSTION HEAD INSPECTION
D
C
E
For possible maintenance operations to the combustion
head, follow the following instructions:
1) Unscrew the bolts C.
2) Untighten the 2 screws D.
3) Open the burner body, after having removed the screw
E
4) Remove the electrodes cables and extract the
F
F and extracted one of the 2 pins E.
combustion head.
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