MSXX10, MSXX20 SERIES
5
63-2607—26
INSTALLATION
When Installing this Product...
1.
Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous condition.
2.
Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3.
Installer must be a trained, experienced service
technician.
4.
After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Electrical Shock or Equipment Damage Hazard.
Low voltage can shock individuals or short
equipment circuitry.
Disconnect power supply before installation.
IMPORTANT
All wiring must agree with applicable codes,
ordinances and regulations.
Location
These actuators are designed to mount directly to a
damper external drive shaft. The shaft coupling fastens to
the drive shaft. The actuator housing includes slots which,
along with an anti-rotation bracket, secure the actuator to
the damper frame or duct work (see Fig. 9).
NOTES:
—
When mounted correctly, these slots allow the
actuator to
float
without rotating relative to the
damper shaft.
—
Using other brackets or linkages, the actuator
can be foot-mounted or tandem-mounted.
CAUTION
Motor Damage Hazard.
Deteriorating vapors and acid fumes can damage
metal parts.
Install motor in areas free of acid fumes and other
deteriorating vapors.
CAUTION
Equipment Damage Hazard.
Tightly securing actuator to damper housing can
damage actuator.
Mount actuator to allow it to float along its vertical
axis.
Preparation
Before mounting the actuator onto the damper shaft,
determine the:
— Damper/valve opening direction for correct spring
return rotation. The actuator can be mounted to provide
clockwise or counterclockwise spring return.
— Damper shaft size (see the Specifications section).
Determine Appropriate Mounting
Orientation
The actuators are designed to open a damper by driving
the damper shaft in either a clockwise
or
counterclockwise
direction (see Fig. 2).
NOTES:
—
Actuators are shipped in the fully closed (spring
return) position.
—
An arrow molded into the hub points to tick
marks on the label to indicate the hub rotary
position.
Fig. 2. Spring Return DCA mounting orientation.
Measure Damper/Valve Shaft Length
If the shaft is less than three inches in length, the shaft
coupling must be located between the damper/valve and
actuator housing. If the shaft length is more than three
inches, the shaft coupling may be located on either side of
the actuator housing.
If the coupling must be moved from one side of the
actuator to the reverse, follow these instructions (see
Fig. 3):
1.
Remove the retainer clip from the shaft coupling and
set it aside for later use.
2.
Remove shaft coupling from one side of the actuator.
3.
Replace the shaft coupling on the opposite side of
the actuator aligning it based on the stroke labelling.
4.
Replace the retainer clip on the shaft coupling using
the groove of the coupling.
Fig. 3. Mounting shaft coupling to actuator opposite
side.
M20953
CCW TO CLOSE
(FAIL-SAFE
POSITION)
CW TO OPEN
CW TO CLOSE
(FAIL-SAFE
POSITION)
CCW TO OPEN
M19579
