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4.13
Actuator (SQM48.4....)
Warning notes
To avoid injury to persons, damage to prop-
erty or the environment, the following warn-
ing notes should be observed!
WARNING
Do not open, interfere with or modify the ac-
tuators!
All activities (mounting, installation and service work, etc.)
must be performed by qualified staff.
Before making any wiring changes in the connection area of
the SQM4..., completely isolate the burner control from the
mains supply (all-polar disconnection).
Ensure protection against electric shock hazard by providing
adequate protection for the connection terminals and by
securing the housing cover.
Check to ensure that wiring is in an orderly state.
Fall or shock can adversely affect the safety functions. Such
units must not be put into operation, even if they do not
exhibit any damage.
Mounting notes
•
Ensure that the relevant national safety regulations are com-
plied with.
•
The connection between actuator drive shaft and controlling
element must be rigid with no mechanical play.
•
To avoid inadmissible loads on bearings caused by rigid
hubs, it is recommended to use compensating clutches with
no mechanical play (e.g. metal bellows clutches).
Installation notes
• Always run the high-voltage ignition cables separate from the
unit and other cables while observing the greatest possible
distance.
• To ensure protection against electric shock hazard, make cer-
tain that the AC 230 V section of the SQM4... is strictly segre-
gated from the functional low-voltage section.
• The holding torque is reduced when the actuator's power sup-
ply is switched off.
•
The housing cover may only be removed for short periods of
time for wiring or when making the addressing. It must be
made certain that dust or dirt will not get inside the actuator
while such work is carried out.
•
The actuator contains a printed circuit board with ESD-sensi-
tive components.
•
The top side of the board carries a cover which affords pro-
tection against direct contact. This protective cover must not
be removed! The underside side of the board must not be
touched.
When servicing or replacing the actuators,
take care not to invert the connectors.
WARNING
All manuals and user guides at all-guides.com
Technical description of the burner
15
GB
D8271
Technical data
Operating voltage
Safety class
Power consumption
Degree of protection
Cable connection
Direction of rotation
Nominal torque (max)
Holding torque (max)
Running time (min.) for
90°
Weight
Environmental conditions:
Operation
Climatic conditions
Mechanical conditions
Temperature range
Humidity
AC 2 x 12 V via bus cable from the
basic unit or via a separate trans-
former
extra low-voltage with safe isolation
from mains voltage
26...34 VA
to EN 60 529, IP 54, provided ade-
quate cable entries are used
RAST3.5 connectors
- Standard is counterclockwise
- Reverse is clockwise
20 Nm
20 Nm
30 s.
approx. 1.6 kg
DIN EN 60 721-3-3
class 3K3
class 3M3
-20...+60 °C
< 95 % r.h.
Fig. 7
Tab. C
20010309
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