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4.14 Servomotors
Introduction
The servomotors are commanded by the control box, which con-
stantly checks their position by means of a return signal from the
optic sensor inside the servomotor.
For this reason it is absolutely forbidden to re-
move the cover of the servomotors.
WARNING
The position (in degrees) of the servomotors can be seen on the
display of the operator panel.
See paragraph "List of parameters" on page 49, parameter 922
- index "0" for fuel servomotor, index "1" for air servomotor.
The servomotors are electrically connected to the control box by
means of RAST 2.5 type connectors.
During the maintenance or replacement of the servomotors,
take care not to invert the connectors.
Follow the indications given in the electrical layouts or the silk-
screen printing on the control box cover.
Technical description of the burner
19
GB
D8271
Technical data
Model
Type of motor
Electrical supply
Protection level
Firing rate
Opening time 0 - 90°
Torque
Input power
Rotation
Fig. 11
SQM33.5...
Stepping motor
AC/DC 24V
IP54
0 - 90°
Min: 5 s
Max: 120s depending on the
type of control box
3 Nm
10 W
Clockwise/anticlockwise (can
be selected from the control
box)
Tab. J
20109570
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