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Technical Instructions
Document No. 155-029P25
AP 331-3
December 3, 2004
POWERS™ Controls
No. 6 Pneumatic Damper Actuator
331-2793 Actuator 331-2857 Actuator 331-3012 Extended Shaft and Frame
with Clevis and Pin Mounting
The POWERS Controls No. 6 Pneumatic Damper Actuator is a heavy-duty, rolling
Description
diaphragm, spring return actuator designed to drive large dampers, centrifugal
refrigeration inlet vanes, and other applications requiring a large, effective
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Technical Instructions POWERS™ Controls No. 6 Pneumatic Damper Actuator Document No. 155-029P25 December 3, 2004 Table 1. Product Numbers for No. 6 Pneumatic Damper Actuators. Product Numbers Nominal Spring Range Description Mounting Style 3-8 psi 3-13 psi 8-13 psi (21-55 kPa) (21-90 kPa) (55-90 kPa) 1 Actuator, integral pivot Pivot 331-2793 331-2794 331-3060 Actuator, integral pivot and forward travel stops (Figure Pivot — 331-2796 331-2988 1) 2 1 Actuator with clevis for fr
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POWERS™ Controls No. 6 Pneumatic Damper Actuator Technical Instructions Document No. 155-029P25 December 3, 2004 Damper shaft extension kits: Accessories 1/2-inch (13-mm) diameter, 2-1/4 inch (57-mm) rod 331-631 (See TB-128 POWERS™ Controls Damper Shaft Extension Technical Bulletin 155-205P25) 1/2-inch (13-mm) diameter, 9-inch (229-mm) long hollow rod 333-184 1/2-inch (13-mm) diameter, 9-inch (229-mm) long rod 333-042 1–inch (25–mm) diameter 11-5/8 inch (295-mm) long (
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Technical Instructions POWERS™ Controls No. 6 Pneumatic Damper Actuator Document No. 155-029P25 December 3, 2004 Actuator Sizing The quantity of actuators required depends on several torque factors. To determine the quantity of actuators required for the installation: 2 1. Obtain damper torque ratings (ft-lb/ft ) from the damper manufacturer. 2. Determine the area of the damper. 3. Calculate the total torque required to move the damper: Total Torque = Torque Rating x Damper Area 4
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POWERS™ Controls No. 6 Pneumatic Damper Actuator Technical Instructions Document No. 155-029P25 December 3, 2004 Operation The air tubing from a controlling instrument is connected to the actuator’s upper housing. With no control pressure to the actuator, the compression spring forces the spring seat Standard Actuator and actuator shaft toward the upper housing, but is limited by the E-ring. As the control (Figure 1) pressure increases, the spring compression is overcome and the
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Technical Instructions POWERS™ Controls No. 6 Pneumatic Damper Actuator Document No. 155-029P25 December 3, 2004 Table 4. Extended Shaft/Frame Mounting Assemblies Components. Item Part No. Description Qty. Material 1 041-162J Nut 1 Steel 2 046-020K Lockwasher 1 Steel 3 047-061K Retaining E-ring 2 Steel 4 331-565 Pivot Post 1 Steel 5 041-142 Nut 1 Steel 6 333-207 Clevis 1 Zinc Plated Steel 7 331-293 Clevis Pin 1 Zinc Plated Steel 8 331-807 Hitch Pin 1 Zinc Plated Steel 9 331-941
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POWERS™ Controls No. 6 Pneumatic Damper Actuator Technical Instructions Document No. 155-029P25 December 3, 2004 One-Section Damper 1. Attach the damper mounting bracket to the lower right-hand corner (or upper Kit 751 left-hand corner if necessary) of the damper section with the six screws provided. For Arrow United Industries 1770 dampers, add the shim provided between the bracket and bottom of the frame. Have the damper manufacturer drill the holes in the See Figure 4 and
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Technical Instructions POWERS™ Controls No. 6 Pneumatic Damper Actuator Document No. 155-029P25 December 3, 2004 Frame Mounting - 1. Follow the steps in One-Section Damper. Type A, 2. Attach the Damper Blade Clip to the damper blade in the second damper section. Continued Repeat Step 2 in One-Section Damper. The push rod will connect to the extra crank on the drive shaft. Two-Section Damper Kit 752 See Figure 6 and Figure 7 Figure 6. Two-section Damper. Figure 7. Actu
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POWERS™ Controls No. 6 Pneumatic Damper Actuator Technical Instructions Document No. 155-029P25 December 3, 2004 Frame Mounting - 1. Order one each of the following: Actuator assembly: 331-3011, 331-3012, 331-3013, or 332-3011 Type B Mounting Lug: 331-569 2. Weld the mounting lug parallel and 5/16-inch (8 mm) from the inside edge of the See Figure 8 through damper frame and perpendicular to it. See Figure 8. Weld the lug along both sides. Figure 10 The lug should be as cl
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Technical Instructions POWERS™ Controls No. 6 Pneumatic Damper Actuator Document No. 155-029P25 December 3, 2004 Frame Mounting - Type B, Continued Figure 9. Frame Mounting, Figure 10. Frame Mounting, Normally Open Damper. Normally Closed Damper. Actuator Mounting Table 5. Mounting Plate Hole Identification. Hole Used For 1 No. 6 Actuator extended shaft mounting. 2 Not used. 3 No. 4 Actuator extended shaft. No. 6 Actuator frame mounting NC 4 No. 6 Actuator frame mounti
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POWERS™ Controls No. 6 Pneumatic Damper Actuator Technical Instructions Document No. 155-029P25 December 3, 2004 Dimensions Figure 13. Extended Shaft Remote Mounting with Travel Stops. Dimensions in Inches (Millimeters). Offset Mounting Bracket This bracket is designed to offset Universal Mounting Plate 331-623 or 331-623A from the ductwork. NOTE: Depending on the application, two brackets may be required to support the actuator and universal mounting plate.
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Technical Instructions POWERS™ Controls No. 6 Pneumatic Damper Actuator Document No. 155-029P25 December 3, 2004 Dimensions, Continued Figure 16. No. 6 Actuator with the Figure 15. Actuator Mounting Plate 331-623. RL 147 Positioning Relay Mounting. Dimensions in Inches (Millimeters). Dimensions in Inches (Millimeters). Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and mod
