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ENGLISH
PRESSURE SWITCH ADJUSTMENT
a
Ir pressure swItch
To unblock the burner, press the special pushbutton and return the
pressure switch regulator to a sufficient value in order to measure the
air pressure existing during the pre-ventilation phase.
The adjustment of this pressure switch is carried out as follows:
•
With the burner operating at minimum power, remove the cover
(1).
•
Slowly turn the knob (2) clockwise until the burner shuts down.
•
Then check the indication of the upward-pointing arrow on the
graduated scale.
•
Turn the knob anticlockwise again until the value measured on
the graduated scale coincides with the arrow pointing downwards,
thus recovering the pressure switch hysteresis represented by the
white field on a blue background between the two arrows.
•
Now check that the burner is starting correctly.
•
In the event of further stop conditions, turn the knob anti-clockwise
to a value equal to 20% of the set value and check that the burner
starts up correctly.
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1
Cover
2
Adjusting knob
2
1
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