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Bentone BG550/650
General
High capacity (red)
Low capacity (orange)
Closed damper (blue))
Solenoid valve High capacity (black)
9. Damper motor 2-stage
9.1
Air adjustment
The damper motor turns the damper between three
pre-set positions: fully closed, low load, full load. These
positons are controlled in the motor by cams of different
colours. The black cam controls the gas valve for full
load.
If the air volume needs changing: Remove the cover of
the damper motor and change the position of the cams
by turning them with the tools accompanying the burner.
Low load:
Adjust the operating switch to full load (ll).
• Reduce the air volume: Turn orange cam towards 0°.
• Increase the air volume: Turn orange cam towards 90°
Adjust the operating switch back to low load and check
the air volume.
Full load
Adjust the operating switch to low load (l).
• Reduce the air volume: Turn red cam towards 0°
• Inrease the air volume: Turn red cam towards 90°
If the red cam is moved, change the black cam as much.
Adjust the operating switch to low load and check that
the correct air volume has been obtained.
9.2
Releasing button:
By pressing the button and snapping it down, the motor
will be released and the damper can easily be turned.
This function facilitates an exchange of damper motor.
Releasing button N.B.
The upper position is
the standard position
!
The blue cam is the limit position for fully closed damper and it is normally
not necessary to change it.
