Document Outline

• Application
  • DuraDrive ™ Direct Coupled Actuators are designed to be used in both damper and valve control applications. The follow general instructions are for damper applications, refer to the Applicable Literature table for valve literature.
  • The MA40-704X, MA4X-707X and MA4X-715X series spring return actuators are used for the on-off, fail safe control of dampers and valves in HVAC systems.
• Features
  • . Two-position actuator controlled by SPST controller
  • . 133 lb-in (15 N-m), 60 lb-in (7 N-m), and 35 lb-in (4 N-m) torque models
  • . 24 Vac/DC, 120 Vac, and 230 Vac models
  • . Rugged die cast housings rated for NEMA 2 / IP54
  • . Overload protection throughout rotation
  • . Optional built-in auxiliary switch to provide for interfacing or signaling
  • . Provides 95° of rotation
  • . Visual position indicator provided
  • . Provides true mechanical clockwise or counterclockwise spring return operation for reliable fail safe application and positive close-off in air tight damper applications
  • . Direct mount to round or square damper shafts
  • . Rotation limiting available
  • . MA4X-7153 series actuators can be double- mounted (gang mounting) to accommodate high torque application requirements
  • . Five year warranty
  • . MA41-707X-XXX and MA41-715X-XXX equipped with manual override
• Applicable Literature
• SPECIFICATIONS
  • Actuator Inputs
    • Control Signal:
    • Power Input:
    • Connections:
  • Actuator Outputs
    • Electrical
      • Auxiliary Switches,
        • MA4X-715X-502 and MA4X-707X-502
        • MA40-7040-501 and MA40-7041 -501
        • MA40-7043-501
    • Mechanical:
      • Stroke
      • Damper Shaft Clamp
        • MA40-704X
        • MA4X-715X or MA4X-707X
      • Position Indicator,
        • MA4X-715X and MA4X-707X,
        • MA40-704X,
      • Nominal Damper Area
      • Direction of Rotation,
      • Manual Override,
      • MA41-707X and MA41-715X rotation is adjustable from -5o to 85o using manual override crank.
  • Environment
    • Ambient Temperature Limits:
      • Shipping & Storage,
      • Operating
    • Humidity:
    • Location:
      • MA4X-715X and MA4X-707X
      • MA40-704X
  • Agency Listings
    • UL 873
    • CUL
    • European Community
    • Australia
  • Table-1 Model Chart.
• TYPICAL APPLICATIONS (wiring diagrams)
  • Figure-1 Typical Wiring Diagram for 24 Vac Basic and Double Auxiliary Switch Models.
  • Figure-2 Typical Wiring Diagram for 120 Vac or 230 Vac Basic and Single Auxiliary Switch Models.
  • Figure-3 Typical Wiring Diagram for 24 Vac Basic and Single Auxiliary Switch Models.
  • INSTALLATION
    • Inspection
    • Requirements
  • Precautions
    • General
    • Federal Communications Commission (FCC)
    • Canadian Department of Communications (DOC)
    • European Standard EN 55022
    • Location
  • Mounting
    • Damper Actuator Sizing
    • Damper Shaft Sizing
    • MA40-704X Series Installation
    • MA4X-707X and MA4X-715X Series Installation
    • Jackshaft Installation
    • Multiple Actuator Mounting
      • Table-2 Power Wiring Color Code.
      • Figure-4 Mounting Multiple Actuators.
    • Wiring Requirements
      • Control and Power Leads
        • Table-3 Power Wiring Data.
  • Auxiliary Switches
    • Adjusting the Switching Point
      • 1. The actuator must be in its normal (spring return) position.
        • 2. Use a flat screw driver to rotate the switch pointer until it is at the desired switch position on the 0 to 1 scale.
      • 1. The actuator must be in its normal (spring return) position.
        • 2. Insert a 1/8" allen wrench into the hex hole located in the center of the adjustable switch pointer.
        • 3. Rotate the wrench until the switch pointer is at the desired switch position in degrees, from 25 to 85˚.
          • Table-4 Auxiliary Switch Rating.
    • Rotation Limitation
      • Rotation Limitation for MA40-704X Series
        • 1. Determine the amount of damper rotation required. The actuator stop block provides limited rotation from 40˚ to 95˚.
          • 2. Loosen the screw securing the stop block to the actuator.
          • 3. Slide the stop block into position, so that its edge lines up with the degree graduation on the actuator face which corresponds with the required rotation. See Figure-5.
          • 4. Secure the stop block in place.
          • 5. Test the damper rotation by applying power. Re-adjust if necessary.
          • Figure-5 Adjusting Stop Block for Limited Rotation.
      • Rotation Limitation for MA4X-715X and MA4X-707X Series
        • 1. Determine the amount of damper rotation required.
          • 2. Locate the AM-689 rotation limiter on the actuator so that its edge lines up with the degree graduation on the actuator face which corresponds with the required rotation. See Figure-6.
          • 3. Find the appropriate cross-hair location through the slot of the rotation limiter. This is the mounting location for the retaining screw.
          • 4. Pierce through the label material to allow easy fastening of the retaining screw.
          • 5. Position the rotation limiter back to the desired position, making sure the locating “teeth” on the rotation limiter are engaged into the locating holes on the actuator.
          • 6. Fasten the rotation limiter to the actuator using the self-tapping screw provided.
          • 7. Test the damper rotation by applying power. Re-adjust if necessary.
          • Figure-6 Securing the AM-689 Rotation Limiter.
• CHECKOUT
  • 1. Apply power to the actuator. Actuator and damper should be driven to their powered position.
    • 2. On the MA4X-7XXX-50X models, check for correct auxiliary switch operation.
    • 3. Break power to the actuator. Actuator and damper should return to their normal, or spring return position.
      • Table-5 Power Wiring Color Code.
  • THEORY OF OPERATION
  • MAINTENANCE
  • FIELD REPAIR
• DIMENSIONAL DATA
  • Figure-7 MA4X-707X or MA4X-715X Series Mounting Dimensions.
  • Figure-8 MA40-704X Series Mounting Dimensions.
  • MA40-704X Series, MA4X-707X Series, MA4X-715X Series
  • MA40-704X