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Les langues disponibles
Following items do not need, generally, any further adjustment:
A - Servomotor
B - Pump
C - Motor overload relay
A - SERVOMOTOR
5
4
Fig. 5
The servomotor controls contemporaneously the air delivery and pressure and the fuel delivery.
It is provided with three adjustable cams, controlling the corresponding switches.
st
1
cam:
it controls the stroke of the servomotor at the position of 0°. When the burner is off the air damper is
completely closed.
nd
2
cam:
it controls the stroke of the servomotor at the position of 130°.
rd
3
cam:
it controls the minimum modulating output, leaves the factory set at 20°.
B - PUMP
Set by the factory at 25 bar.
C - MOTOR OVER LOAD RELAY
Set by the factory for the three-phase electric supply 400V. Should the electric supply be three-phase 230V the set-
ting has to be modified as indicated at page 6.
5480
BURNERS ITEMS SET AT THE FACTORY
1
1 - 1
2 - 2
2
3 - 3
3
4 - Pointer
6
5 - Clamp
6 - Motor reset lever
D1999
7
GB
st
Cam (blue)
nd
Cam (red)
rd
Cam (black)
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