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4.14
Servomotor (SQM33....)
Warnings
To avoid accidents, material or environmental
damage, observe the following instructions!
Do not open, modify or force the actuators.
WARNING
All interventions (assembly and installation
operations, assistance, etc.) must be carried
out by qualified personnel.
Before modifying the wiring of the servomotor
in the connection area, fully disconnect the
burner control device from the power supply
(omnipolar separation).
To avoid the risk of electrocution, protect the
connection terminals in a suitable manner
and correctly fix the cover.
After every intervention (assembly and instal-
lation operations, assistance, etc.), ensure
the wiring is in order, then make the safety
checks.
Falls and collisions can negatively affect the
safety functions. In this case, the servomotor
must not be operated, even if it displays no
evident damage.
Assembly notes
The connection between the actuator command
shaft and the control element must be rigid, with-
WARNING
out any mechanical play.
Installation notes
The static torque is reduced when the electrical supply of the
actuator is switched off.
During the maintenance or replacement of the
actuators, be careful not to invert the connec-
tors.
WARNING
Technical description of the burner
19
GB
D8271
Technical data
Model
Operating voltage
Safety class
Power absorption
Protection level
Cable connection
Rotation direction
WARNING
Rated torque (max.)
Static torque (max.)
Running time (min.)
for 90°
Weight
Environmental conditions:
Operation
Climatic conditions
Mechanical conditions
Temperature range
Humidity
Condensation, the formation of ice and the entry
of water are prohibited!
WARNING
SQM33.5...
AC / DC 24V ± 20%
2 according to EN 60 730
Max. 10 W
IP54 in compliance with EN 60 529-1
RAST2,5, connectors
- GAS servomotor: clockwise
- Air servomotor: anticlockwise
The rotation direction is set in the
factory using the control box param-
eter REC ...
3 Nm
3 Nm
5....120 s.
approx. 1.4 kg
DIN EN 60 721-3-3
Class 3K5
Class 3M4
-20...+60°C
< 95% rh
Fig. 10
Tab. H
20107195
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