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Summary of Contents for DeZurik R3 POWERRAC
- Page 1 DEZURIK R3 POWERRAC® CYLINDER ACTUATOR D1 0 3 5 9 Instruction November 2020 DeZURIK, Inc. Sartell, Minnesota USA | Phone: 320-259-2000 | www.dezurik.com | info@dezurik.com...
- Page 2 Safety label(s) on the product indicate hazards that can cause injury or death. If a safety label becomes difficult to see or read, or if a label has been removed, please contact DeZURIK for replacement label(s). Personnel involved in the installation or maintenance of valves should be constantly alert to potential emission of pipeline material and take appropriate safety precautions.
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Page 3: Table Of Contents
DeZURIK Table of Contents Description ..........................4 Installation ..........................4 Operation ........................... 4 Lubrication ..........................4 Open and Closed Position Stops ....................4 Removing Actuator From Valve ....................7 Actuator Disassembly ......................... 7 Actuator Reassembly ......................... 8 Mounting Actuator on Valve ..................... 10 Changing Mounting Position of Actuator on Valve .............. -
Page 4: Description
(250 mm) cylinder has ¾" NPT connections. Operation The R3 PowerRac Cylinder Actuator is powered pneumatically, and rotates 90° between the open and closed positions. The cylinder is sized for 60 psi or 80 psi (415 kPa or 550 kPa), and is limited to 100 psi (690 kPa) maximum. - Page 5 DeZURIK Figure 1 - Component Identification, Unassembled November 2020 Page 5 D10359...
- Page 6 DeZURIK Figure 2 - Component Identification, Assembled November 2020 Page 6 D10359...
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Page 7: Removing Actuator From Valve
DeZURIK Open and Closed Position Stops (Continued) With an 8" (200 mm) cylinder, tighten the closed position stop nut (3/4") to 140 ± 18 foot pounds (190 ± 24 Nm); tighten the open position stop nut (7/8") to 230 ± 30 foot pounds (312 ± 41 Nm). -
Page 8: Actuator Reassembly
DeZURIK Actuator Disassembly (Continued) Remove the tie rod nuts (B56) and washers (B55) from the tie rods (B54), and remove the cylinder cap (B50). Remove the piston rod (B42)— with piston (B46) and cylinder tube (B49)— from the cylinder head on the housing (B1). - Page 9 DeZURIK Actuator Reassembly (Continued) Steps 8 through 18 apply to reassembly of the housing components. Clean and inspect all parts before reassembly. Worn parts, especially sealing components such as O-rings, other seals, and gaskets should be replaced. Before housing reassembly, apply a paint-like coating using one of these...
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Page 10: Mounting Actuator On Valve
DeZURIK Figure 3 – Collet Assembly Mounting Actuator on Valve Refer to Figures 1 and 2 for component identification. Select one of the available actuator-to-valve mounting positions shown on the Installation Drawing. Match the open or closed position of the valve with the open or closed position of the actuator. -
Page 11: Changing Mounting Position Of Actuator On Valve
Replace the actuator on the valve as described in the Mounting Actuator On Valve section. Lockable Model The R3 PowerRac Cylinder Actuator is available as a lockable model that allows the actuator to be locked in either the open or closed position. The lockable model is identified by PRL in the catalog characteristic. -
Page 12: Unlocked Condition
DeZURIK Lockable Model (Continued) The two lock screws (B64) must be in either the unlocked or the locked position as described in the following sections. The gear (B8) will be damaged if either of the stop screws is placed in an intermediate position between the unlocked and locked positions. - Page 13 DeZURIK Adjust only the right-side lock screw to lock the actuator in the open position. Adjusting the wrong screw does not lock the actuator, and can result in personal injury or equipment damage. Loosen the jam nut (B65) on the right side lock screw (B64), as viewed when facing the top of the heads of the lock screws.
- Page 14 DeZURIK Figure 4 – Lockable Model, Component Identification November 2020 Page 14 D10359...
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Page 15: Troubleshooting
DeZURIK Troubleshooting Condition Possible Cause Corrective Action Adjust closed position stop. Actuator closes to Closed position stop is set wrong position incorrectly OPEN AND CLOSED STOPS. Actuator opens to Open position stop is set Adjust open position stop. See wrong position incorrectly OPEN AND CLOSED STOPS. -
Page 16: Limited Warranty
Metric fasteners should not be used with ASME Class 150/300 bolt holes and flange bolt patterns. If you use metric fasteners with ASME Class 150/300 bolt holes and flange bolt patterns, it may lead to product failure, injury, and loss of life. DeZURIK Inc. disclaims all liability associated with the use of metric fasteners with ASME Class 150/300 bolt holes and flange patterns, including but not limited to personal injury, loss of life, loss of product, production time, equipment, property damage, lost profits, consequential damages of any kind and environment damage and/or cleanup.
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