ML6284 NON-SPRING RETURN DIRECT COUPLED DAMPER ACTUATOR
Environmental Protection Ratings: NEMA1 standard with
Install the actuator in a location that allows enough clearance
for mounting accessories and for servicing.
damper shaft in horizontal position.
Accessories:
Mounting
205617 Hub Insert, 3/4 in. round.
205753 Hub Insert, 3/8 in.
205758 Hub Insert, 5/8 in.
205820A 3-Point Mounting Kit.
205685 Crank-Arm Accessory.
205850B End Stop Kit.
The ML6284 Non-Spring Return Direct Coupled Damper
Actuator is designed to operate a damper by driving the
damper shaft either cw
damper design. All actuators are shipped in the fully closed
position.
or ccw
depending on
The ML6284 Non-Spring Return Direct Coupled Damper
Actuator is designed with removable hub inserts to
accommodate specific damper shaft sizes. Proper sleeve
selection is necessary when three-point mounting is used to
avoid excessive strain on the output gear. Most ML6284
Actuators are shipped with a 1/2 in. hub insert. For field use,
two hub insert sizes are available. See the Accessories listing
in the Specifications section. Shaft sizes are stamped on the
inserts.
INSTALLATION
When Installing this Product…
1. Read instructions carefully. Failure to follow them could
damage the product or cause a hazardous condition.
2. Check ratings and description given in the specifications
to make sure the product is suitable for your application.
3. Installer must be a trained, experienced service
technician.
The ML6284 Non-Spring Return Direct Coupled Damper
Actuator is designed for single-point mounting when using a
mounting bracket. Single-point mounting is typically used
when the actuator is mounted on the damper shaft.
4. After installation is complete, check out product
operation as provided in these instructions.
The ML6284 Non-Spring Return Direct Coupled Damper
Actuator can be mounted directly on the damper shaft with the
actuator in any position.
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or property
damage.
Disconnect power before installation to prevent
electrical shock or equipment damage.
A mounting bracket (see Fig. 1) is provided with some models
to aid in installing the actuator. The bracket can be bent to any
shape to allow the bracket tab to be centered in the actuator
slot.
CAUTION
Can cause equipment damage or failure.
1. Never turn motor output hub by hand or wrench.
2. Do not install actuator in areas with acid fumes or
other deteriorating vapors that might attack the
metal parts of the actuator.
CAUTION
Improper mounting can damage the equipment or
Equipment Damage Hazard.
Equipment Damage Hazard.
interfere with proper operation.
The mounting bracket must not bind or clamp the
actuator to the duct. The mounting bracket only
prevents the actuator housing from rotating.
The ML6284 Direct Coupled Damper Actuator has a
reversible output hub. The hub is factory mounted on the top
of the actuator gear housing. When attaching to damper
shafts less than 2.5 in. (64 mm) long, or for ease of mounting,
the output hub may be mounted to the back of the actuator
gear housing. See Fig. 3. Be careful when removing the
retaining ring which secures the output hub sleeve to the
actuator housing. Use a flat headed screwdriver to pry the
retaining ring loose.
WARNING
Can cause severe injury, death or property
damage.
Do not install actuator in areas with escaping gas or
other explosive vapors that could be ignited by a spark
from the actuator or attached accessories.
Fire or Explosion Hazard.
Location
Install the actuator in any location free from acid fumes or
other deteriorating vapors that might attack the metal parts of
the actuator. Make sure the location is not subject to escaping
gas or other explosive vapors that could accidentally be
ignited by a spark from the actuator or its attached parts.
63-2505
4
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