ADJUSTMENTS
M
AIR ADJUSTMENT
In the case of the PM/M type burners, the air gate is operated by an electrical servo control. The positions of the
gate are determined by cams, with reference to graduation markings shown on the disc.
The cams are operated by means of the key provided: they feature a clutch and are self-locking.
By pushing button B, the air gate drive system is disengaged, freeing this for manual movements.
CALIBRATION SQN 30.401...
Cams
I Max. air opening
II Air closed, at stop
III Ignition or 1
stage air opening
st
Key
Release
button
Reference disc
UK
41