19
Bentone B55/B65
General
4.9 Damper motor 2-Stage
Stage 2 (red)
Stage 1 (orange)
Closed damper (blue)
Solenoid valve Stage 2
(black)
Releasing button N.B.
The upper position is the standard
position
Stage 1
Adjust the operating switch to Stage
2 (II).
* 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 capacity and check.
Stage 2
Adjust the operating switch to Stage
1 (I).
* Reduce the air volume: Turn
red cam towards 0°.
* Increase the air volume: Turn
red cam towards 90°
If the red cam is moved, change
the black cam as much. Adjust the
operating switch back to Stage
2 and ensure that the correct air
volume has been obtained.
Closed
The blue cam is the limit position for
fully closed damper and it is normally
not necessary to change it.
Releasing
The damper motor can be released
using the white release button. This
feature simplifies replacement of the
damper motor.
To release Press down the
shaft and slide it
outwards until it
disengages from
the milled slot.
To engage. Slide the shaft
inwards and
release. Adjust
the position of the
motor so that the
cogs mesh with
each other.
The damper motor rotates the
damper between three preset
positions. These positions are
controlled at the motor by micro-
switches, the switching positions
of which are set using the coloured
cams. There is also a black cam,
which controls the activation of
solenoid valve 2.
If the air flow requires adjustment:
Remove the cover from the damper
motor and change the positions
of the cams by turning them with
the aid of the tool supplied. To
deactivate a cam while you are
turning it we recommend that you
switch to a different stage and
then switch back after adjustment
is complete in order to check the
result.
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