DeZurik POWERRAC R1 Instruction Manual Download Page 1

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DeZURIK, Inc. Sartell, Minnesota USA | Phone: 320-259-2000 |

DEZURIK R1 POWERRAC®

SPRING-RETURN ACTUATOR

USED ON ½ - 3” PEC ECCENTRIC VALVES

Instruction

D10389

November 2020

Summary of Contents for POWERRAC R1

Page 1: ...DeZURIK Inc Sartell Minnesota USA Phone 320 259 2000 www dezurik com info dezurik com DEZURIK R1 POWERRAC SPRING RETURN ACTUATOR USED ON 3 PEC ECCENTRIC VALVES Instruction D10389 November 2020...

Page 2: ...on during shipment however items can be damaged in transport Carefully inspect the unit for damage upon arrival and file a claim with the carrier if damage is apparent Parts Replaceable wear parts are...

Page 3: ...uator 8 Actuator Disassembly 8 Spring Return Cylinder Disassembly 10 Spring Return Cylinder Reassembly 11 Actuator Reassembly 12 Mounting Actuator 14 Changing Actuator from Spring Return to Double Act...

Page 4: ...ar A choice of 4 and 6 100 mm and 150 mm cylinder diameters is offered The 4 cylinder is offered with one spring size while the 6 cylinder has two spring sizes The actuator is available as a spring to...

Page 5: ...re 3 Spring to Open As the spring return actuator is cycled air is alternately exhausted and drawn in through a breather The breather is located at one end of the cylinder as shown in Figures 2 and 3...

Page 6: ...ide diameter of cylinder tube S6 Chamfer for cylinder tube on cylinder cap S11 and cylinder head of housing S1 O rings S5 S8 and S14 and grooves Seals S3 and S9 and grooves Thread seal S16 Inside diam...

Page 7: ...e cylinder cap and the open position stop is located in the actuator end cover With a spring to close actuator the open position stop is located in the cylinder cap and the closed position stop is loc...

Page 8: ...trical power to the actuator accessories 3 Remove the jam nut B29 and remove the threaded pointer B9 and spacer B32 from the stud Stud Not Shown in Figure 5 4 Remove the four mounting screws B26 that...

Page 9: ...DeZURIK November 2020 Page 9 D10389 Figure 5 Actuator Assembly Less Cylinder...

Page 10: ...ease to zero re tighten the nuts and contact the factory 2 Remove the cylinder cap S11 3 Push the piston rod S4 through the cylinder head S1 so that the spring assembly S19 is accessible The spring as...

Page 11: ...ling components such as O rings other seals and the cylinder tube 2 Lubricate O rings other seals and the cylinder tube walls 3 With the O ring and groove toward the piston rod place the O ring S14 th...

Page 12: ...the piston nut S10 Do not damage the cylinder wall with the spring assembly during this step 11 Align the holes in the cylinder cap S11 with the tie rods S12 and insert the cylinder cap into the cyli...

Page 13: ...B8 into the housing bearing B2 and engage the gear teeth with the rack B5 teeth so that the marked tooth on the rack and the two marked teeth on the gear are positioned as shown in Figure 7 Figure 7...

Page 14: ...tuator Select a different actuator to valve mounting position Remove and re index the actuator cover Remove the four cover screws B15 rotate the cover and replace the four cover screws B15 and washers...

Page 15: ...n following the instructions for the desired spring action 4 Replace the actuator on the valve See Mounting Actuator section Changing Mounting Position The actuator may be mounted in any of four posit...

Page 16: ...ibed in the Position Stops section 1 Operate the actuator to the fully closed clockwise position Adjusting the wrong screw does not lock the actuator and can result in personal injury or equipment dam...

Page 17: ...n the Position Stops section 1 Operate the actuator to the fully open counterclockwise position Adjusting the wrong screw does not lock the actuator and can result in personal injury or equipment dama...

Page 18: ...that the lock screw is contacting the gear 6 Turn the right side jam nut clockwise against the actuator housing While holding the lock screw from turning tighten the jam nut to 38 5 foot pounds 52 7...

Page 19: ...n Stops section Actuator will not fully operate valve Cylinder pressure is low Increase cylinder pressure Do not exceed 100 psi Actuator is sized incorrectly Use larger actuator Piston seal in cylinde...

Page 20: ...l be the only effective guarantee or warranty binding on Seller despite anything to the contrary contained in the purchase order or represented by any agent or employee of Seller in writing or otherwi...