ISO 9001
OPERATION
Warning - This are spring return actuators. Keep clear of all
moving parts at all times.
The direction of operation of the spring return function and mo-
tor operation of all models is determined by left hand or right
hand mounting onto the damper.
All actuators are directly mounted onto the damper shaft using
a universal mounting clamp and provide true mechanical spring
return operation for reliable, positive close-off on air tight dam-
pers. When power is applied, the actuator moves to its powe-
red position, at the same time tensing the spring return safety
mechanism. When the power is removed, the spring returns the
actuator to its normal position.
The spring return system provides consistent torque to the
damper with, and without, power applied to the actuator. All ac-
tuators provide 95° of rotation and are equipped with a gradua-
ted position indicator showing 0 to 1.
Some models are provided with two built-in auxiliary switches.
The SPDT switches are provided for interfacing or signalling,
for example, fan start-up. The switching function is adjustable
between 0° to 95° rotation (0 to 1 scale).
INSTALLATION AND MOUNTING
The actuator is
fi
tted directly to the damper and the clamp
tightened securely to the damper shaft. A universal anti-rotation
bar is supplied with each actuator and must be
fi
tted to prevent
rotation during operation.
A stroke limiting device (stop block) is used to limit the stroke
between 40 and 95°.
General precautions
MA40-7041 series at mains voltage and therefore present e
possible electrical shock hazard. Disconnect the power sup-
ply before and during installation to prevent electric shock
and equipment damage. Observe local wiring regulations and
earthing requirements. If auxiliary switches are
fi
tted and used
at mains voltage, observe local wiring regulations, earthing
requirements and all usual electric shock safety precautions.
Where screening is required, use either screened cable or
MICC. Use an isolator with a minimum contact gap of 3mm
(conforming to EN 60335-1) to isolate the MA40-7041 series
actuators from the mains supply.
MA41-7043, MF41-7043 and MS40-7043 Series actuators
must be connected to 24Vac via a safety transformer confor-
ming to EN 60742.
MX40-7043 series actuators are not recommended for applica-
tions needing multiple actuators mounted on a common shaft.
Avoid electrical noise interference. Do not install near large
contactors, electrical machinery, or welding equipment.
For applications requiring
fl
exible metal conduit, use reduced
(thin) wall types only.
Do not exceed ratings of the device(s).
Certifi cations
Federal Communications Commission (FCC)
Note: This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules.
These limits are designed to provide reasonable protection
against harmful interference in residential installations. This
equipment generates, uses, and can radiate radio frequency
energy and may cause harmful interference if not installed and
used in accordance with the instructions. Even when instruc-
tions are followed, there is no guarantee that interference will
not occur in a particular situation—which can be determined by
turning the equipment off and on—the user is encouraged to
try to correct the interference by one or more of the following
measures:
1
st
Issue
09/13
2 DBL153e
Location
Avoid locations where excessive moisture, corrosive fumes, vi-
bration, or explosive vapours are present.
The actuator should only be mounted directly on the damper
shaft in locations that clear the maximum dimensions of the
actuator case and allow the actuator to be mounted
fl
ush to the
surface of the terminal box and perpendicular to the damper
shaft.
Note: Some terminal boxes have sheet metal screw heads or
other protrusions near the damper shaft. In these cases, a spa-
cer or shim may be added under the anti-rotation bracket of the
actuator to make the actuator perpendicular to the shaft.
Before mounting the actuator, determine the direction of rota-
tion and take into account the length of the damper shaft. These
are covered in the following section.
Mounting
The zero (0) position on the position indicator is the normal or
spring return position. When the actuator is mounted with the
‘R’ side facing the installer and the control system initiates ac-
tuator movement (either by applying the appropriate voltage,
increasing the control signal or by driving the actuator open,
as appropriate), the actuator will rotate in the counterclockwise
direction. Similarly, when the actuator is mounted with the ‘L’
side facing the installer and the control system calls for actuator
movement, the actuator will rotate in the clockwise direction.
1. Move the damper to its normal position. Check that the
controller action is set to match the damper application,
as follows:
•
For normally closed damper - when damper is closed,
actuator position indicator should be approximately
0°. When damper is open, the actuator position indi-
cator should be approximately 90°.
•
For normally opened damper - when damper is open,
actuator position indicator should be approximately
0°. When damper is closed, the actuator position indi-
cator should be approximately 90°.
Note:The actuator is usually shipped with the universal
mounting clamp mounted to the ‘L’ side of the actuator.
2. Determine the direction of rotation required by the dam-
per application and ensure that the clamp is on the correct
side; if the clamp is not on the correct side, remount it as
follows:
•
Find the letters ‘R’ and ‘L’ on opposite tabs on the
clamp.
•
If mounting the actuator with the ‘L’ side out, position
the clamp so that the pointer section of the tab with
the ‘L’ is positioned at 0 and the spline pattern of the
clamp mates with the spline of the actuator. Slip the
clamp over the spline.
•
If mounting the actuator with the ‘R’ side out, use the
same procedure as for the ‘L’ side out, but use the ‘R’
tab instead of the ‘L’ tab.
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and re-
ceiver.
•
Connect the equipment to an outlet on a circuit different
from that to which the receiver is connected.
•
Consult the dealer or an experienced radio/television tech-
nician for help.
Canadian Department of Communications (DOC)
Note: This Class B digital apparatus meets all requirements of
the Canadian Interference-Causing Equipment Regulations.
European Standard EN 55022. This is a Class B digital (Euro-
pean Classi
fi
cation) product.
