The recommendations in this manual for installation, operation and maintenance must be followed to
ensure safe use. All persons responsible for the installation and use of Joyce/Dayton Multipurpose
Actuators must be familiar with the contents of this manual.
The customer is responsible for guards and other protective devices and for ensuring that Multipurpose
Actuator usage conforms with local and national operating and safety codes appropriate to the class of
equipment into which the Multipurpose Actuator is installed
This manual provides installation, operation and maintenance instruction for standard
Joyce/Dayton Multipurpose Actuators. For special units not covered, please contact Joyce/Dayton
Corp.
1-3 Receipt of Product
All equipment should be immediately inspected upon receipt for any damage and to verify correct
product and quantities. Any problems should be reported to Joyce/Dayton Corp. and the freight
carrier as soon as possible. Products returned without a Return Goods Authorization (RGA) form
will not be accepted. Contact Joyce/Dayton to obtain an RGA.
1-4 Warranty
Seller warrants its products to be free from defects in material and workmanship under normal
and proper use in accordance with instruction of seller for a period of one year from the date of
shipment to buyer. Seller's liability under such warranty or in connection with any other claim
relating to the products shall be limited to the repair, or at seller’s option, the replacement or
refund of the purchase price of any products or parts or components thereof which are returned to
seller freight prepaid and which are defective in material or workmanship. Products or parts or
components thereof, which are repaired or replaced by seller will be returned to buyer freight
collect. This warranty is not intended to cover consumer products, as defined in the MagnusonMoss Warranty-Federal Trade Commission Improvement Act, 15 U. S. C. Sections 2301-12,
which are purchased by buyer for purposes other than resale. If buyer is not intending to resell the
products, and if the products are consumer products as defined in the Magnuson-Moss Act, the
foregoing warranty, but not the limitation of seller's liability, shall be null and void. EXCEPT AS
EXPRESSLY STATED ABOVE, SELLER MAKES NO WARRANTY, EXPRESS OR IMPLIED,
WHETHER OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR
USE OR OTHERWISE, ON THE PRODUCTS, OR ON ANY PARTS OR LABOR FURNISHED
DURING THE SALE, DELIVERY OR SERVICING OF THE PRODUCTS.
1-5 Precautions of Use and Installation
1. Each Multipurpose Actuator includes limit switches, which are preset to the design limits of the
unit. Customers who choose to make limit switch position adjustments must ensure the limits
remain within the design limits of the actuator. Note that adjustments to the preset positions
need to be made before the actuator is installed. Limit switches on MA0513 are not adjustable.
2. It is necessary that appropriate, qualified personnel perform the installation of Joyce/Dayton
products. Ensure that all personnel who will service or operate equipment are familiar with its
use and limitations.
3. Joyce/Dayton Multipurpose Actuators are not rated for shock-loading or extreme vibration. It is
the responsibility of the user to ensure these conditions are not imposed on the actuator.
4. In the event that service or maintenance is required, the load must be secured or removed
before any work can begin.
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5. Multipurpose actuators can be mounted and operated in any orientation, but the load must be
axial to the actuator. No side load is permitted. Refer to Section 1-9 for installation guidelines.
6. Be certain the rating of the actuator meets or exceeds the load.
7. The actuator must be mounted on a rigid structure sufficient to support the maximum possible
load. An under-designed structure could lead to premature wear or failure.
8. When fastening the load to an actuator, make sure the actuator is in the retracted position.
This positions the load accurately with respect to the lifting screw centerline. Never pull the
translating tube to one side to make connection with your structure. Fully extend the actuator to
make sure the load is aligned with the translating tube.
1-6 Features
12 VDC Multipurpose Actuator
• 12 volt DC motor
• Preset limit switches (Adjustable, except for MA0513, which are not adjustable)
• Self-locking
• Potentiometer
• Clevis-to-Clevis Mounting Style
• 25% duty cycle
• IP65 protection rating
120 VAC Multipurpose Actuators
• 120 volt AC motor
• Preset limit switches (Adjustable)
• Self-locking
• Potentiometer
• Clevis-to-Clevis Mounting Style
• 25% duty cycle
• IP65 protection rating
1-7 Limit Switch Adjustment
Limit switches on all Multipurpose Actuators are preset. These instructions are provided in
case the preset positions need to be adjusted. Limit switches on MA0513 actuators are not
adjustable. Figure 1 and Figure 2 on the following page illustrate the limit switch components.
Exercise reasonable precaution when making adjustments. Do not contact the inner tube while
the motor is running.
1. If the actuator is not already fully retracted (ref. catalog for minimum closed height)
operate the actuator until the lower limit is reached and the motor stops. If satisfied with
the actuator retract dimension as positioned continue to step # 3.
2. To finely position the retract stopping location rotate the inner actuator tube until the
desired stopping location is achieved. Do not rotate the inner tube in a manner to position
it lower than the minimum closed height shown in the catalog.
3. From this point on until the actuator is fully mounted in the assembly it is important not to
allow the inner tube to rotate. Allowing it to rotate will alter the retracted position location
and require repeating steps 1 & 2.
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4. To set the upper limit switch position, secure the inner tube from rotating by either
gripping it by hand or slide a screwdriver through the clevis hole and lay the actuator
down flat on a suitable work surface.
5. Electrically operate the actuator until the desired extend position is reached. If the
actuator stops on its own before reaching the desired position the retract position may
have been set too high and the physical travel limitations of the actuator have been
exceeded. To rectify this problem repeat steps 1 & 2 or modify your assembly/structure
geometry.
6. Once the desired extend position is reached. Use an Allen wrench to remove the five hex
head cap screws at the base of the actuator housing, and gently pull the limit switch
cover off the housing. It may be necessary to straighten the wires in the pigtail to facilitate
separation. This will expose the limit switch assembly.
7. Loosen the Philips-head screw on the limit switch cam assembly just enough so the
upper cam can separate from the lower cam but not enough where the screw is removed
completely. Adjust the upper cam by simultaneously pulling gently away from the lower
cam and rotate until the upper cam just depresses the extend limit switch plunger. Take
care not to disturb the position of the lower cam and gear.
8. Tighten the Philips-head screw and if desired electrically retract the actuator to confirm
the retracted dimension and extend to confirm the fully extended position. If satisfied
continue to the next step otherwise repeat the instructions outlined above.
9. Carefully replace the cover, taking care that the gasket is in place and the wires remain
tucked inside the cover. Tighten the five socket head cap screws to fasten the cover in
place.
10. Once the limit switches are set, the unit can be mounted into the assembly.