baltur GI 350 DSPGN Instruction page 54

DETAILS OF THE MODULATION CONTROL MOTOR SQM 10 - SQM
20 FOR REGULATING CAMS OF GAS AND MIXER BURNERS
To modify the regulation of the cams utilized, operate the respective red rings (A - Z - M - V).
By pushing with enough force, in the direction desired, each red ring will rotate with respect to the reference scale.
The index of the red ring indicates on the respective reference scale the rotation angle taken up foe each cam.
Reference index
Adjustable cams
Maximum opening
end of the run
Total air closure
(burner at a standstill)
Air ignition opening
Principle feed valve(s)
B = Insertion and disinsertion lever
52 / 
000608006_2007/06
N° BT 8562/1
Cam shaft
Motor connection - camshaft
Position  = Disinsertion
Position 2 = Insertion