Bentone BG 300 M-J/K-IP40, Installation And Maintenance Instruction

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Bentone
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Y
5.3 Setting the air pressure switch
The air pressure switch should block the burner if the air volume supplied
for combustion is insufficient. The air pressure switch must be set so that,
in the event of incorrect air supply at the burner’s max. or min. capacity, it
reacts before the monitored pressure falls excessively and results in poor
combustion.
Setting range approx.:
LGW 10
1-10 mbar
LGW 50 2,5-50 mbar
Setting the air pressure switch
1. Remove the protective cover, screw (Y).
2. Start the burner.
3. Carefully turn the scale on the air pressure switch clockwise until the air
pressure switch stops the burner. Is the tolerance on the scale for
the air pressure switch minimum approx. ±15%?
4. Try to find the pressure at which the burner stops for both the minimum
and maximum output by turning the scale. Make a note of the values
and then set the air pressure switch on the basis of the highest
pressure noted at which the burner stopped.
5. The air pressure switch should be set to a pressure approx. 10-15%
lower than the highest noted pressure at which the burner stopped.
6. After setting the air pressure switch, repeat start-up several times and
run through the burner’s set output range several times. This is to
ensure that the burner functions reliably. If breakdowns or interruptions
occur, the setting of the air pressure switch is probably too narrow.
7. Fit the protective cover, screw (Y).
!
Be careful when adjusting the air pressure switch; it contains a
live component.