Related Manuals for Emerson Hytork XL Series
Summary of Contents for Emerson Hytork XL Series
- Page 1 Installation, Operation and Maintenance Manual MAC050515 EN Rev. 0 November 2022 Hytork XL Pneumatic Actuator...
- Page 2 Notes Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 This page is intentionally left blank...
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Page 3: Table Of Contents
Installation, Operation and Maintenance Manual Table of Contents MAC050515 EN Rev. 0 November 2022 Table of Contents Section 1: Important Safety Procedures Important Safety Procedures...................1 Section 2: ATEX Instructions for Use in (Potential) Explosive Areas Intended Use ....................3 Safety Instructions ..................3 Temperature Range for (Potential) Explosive Areas ........ - Page 4 Table of Contents Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 Section 10: Assembly Instructions 10.1 Grease Instructions ..................14 10.2 Pinion Assembly ..................15 10.3 Alignment of Pinion for Correct Piston Assembly ......... 15 10.4 Piston Assembly ..................16 10.4.1 Clockwise Rotation ................
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Page 5: Section 1: Important Safety Procedures
Installation, Operation and Maintenance Manual Section 1: Important Safety Procedures MAC050515 EN Rev. 0 November 2022 Section 1: Important Safety Procedures Table 1. Applicable Models XL 26 XL 281 XL 2586 XL 71 XL 426 XL 4581 XL 131 XL 681 XL 186 XL 1127 XL 221... - Page 6 (21) when fully assembled into the actuator. Any shortened SAFEKEY must not be used. If in doubt, contact Emerson or your local Hytork Stocking Distributor. Read the relevant sections carefully before continuing. NOTE: •...
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Page 7: Section 2: Atex Instructions For Use In (Potential) Explosive Areas
(Potential) Explosive Areas Intended Use The Hytork XL series pneumatic actuators are a Group II category 2 equipment and intended for use in areas in which explosive atmospheres caused by mixtures of air and gases, vapours, mists or by air/dusts are likely to occur. Therefore, it may be used in (ATEX) classified Zones 1, 2 (Gases) and/or 21, 22 (Dust). -
Page 8: Temperature Range For (Potential) Explosive Areas
Section 2: ATEX Instructions in Explosive Areas Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 WARNING The actuator’s surface temperature is dependent upon process operating conditions. If the actuator's surface temperature exceeds the acceptable temperature for the hazardous area classification, it can catch fire or in worst case can explode causing personal injury and property damage. -
Page 9: Section 3: Operating Media, Pressures And Temperatures
Installation, Operation and Maintenance Manual Section 3: Operating Media, Pressures and Temperatures MAC050515 EN Rev. 0 November 2022 Section 3: Operating Media, Pressures and Temperatures Operating Media Use clean, dry, or lubricated air or inert gas. Maximum pressure: 8 bar/116 psi. NOTE: On applications where the spring stroke of single acting actuators is pneumatically operated, the maximum pressure is 6.5 bar/95 psi. -
Page 10: Section 4: Actuator To Valve Installation
Section 4: Actuator to Valve Installation Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 Section 4: Actuator to Valve Installation The pinion drive, coupling device, and valve stem should be centered and concentric to prevent any side loading to the pinion radial bearing and valve stem seat area. Ensure that the coupling shaft to be operated is a tight but free sliding fit into the female drive in the actuator pinion (19). -
Page 11: Travel Stop Adjustment Procedure
Installation, Operation and Maintenance Manual Section 4: Actuator to Valve Installation MAC050515 EN Rev. 0 November 2022 Travel Stop Adjustment Procedure Operate valve/actuator assembly to the open position. Remove air supply. Slacken locknut (24) on the “closed” stop (Marked “2” in Figure 1). Turn the “closed”... -
Page 12: Section 5: Piping Instructions
Section 5: Piping Instructions Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 Section 5: Piping Instructions All actuators can be either piped with solid or flexible tubing with the solenoid valve mounted remotely from the actuator or by mounting a NAMUR designed solenoid valve DIRECTLY onto the NAMUR mounting pad on the side of the actuator (refer to Figure 2). -
Page 13: Solenoid Valves On Spring-Return Actuators
Installation, Operation and Maintenance Manual Section 6: Solenoid Valves MAC050515 EN Rev. 0 November 2022 Section 6: Solenoid Valves on Spring-Return Actuators It is recommended that on Spring-Return actuators, the Hytork “CATS” solenoid valves are used. These valves are specially designed to prevent contamination of the internals of the actuator by dirt from the atmosphere. -
Page 14: Section 7: Position Feedback
Section 7: Position Feedback Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 Section 7: Position Feedback All position feedback or positioning accesories that comply to the VDI/VDE 3845 (NAMUR) standard, can be mounted easily on top of Hytork XL actuators. To access the pinion top, remove the position indicator. -
Page 15: Section 8: Spares Recommendations
Section 8: Spares Recommendations When disassembling and carrying out maintenance work on the XL actuator, a Hytork spares kit must be used to replace all O-Rings, DURASTRIP bearings, washers etc. This kit is available from Emerson or its Stocking Distributors. Spares Recommendations... -
Page 16: Section 9: Disassembly Procedure
Section 9: Disassembly Procedure Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 Section 9: Disassembly Procedure End Cap and Springs Disassembly on Spring-Return Actuators Release locking nuts (24) and remove both travel stops (22) and thread seals (23) or O-Rings (23a). -
Page 17: Changing Spring Sets On Xl26 To Xl681
If necessary, remove any burrs, etc. from the top of the pinion before removal. Carefully remove pinion top bearing (9) from the body. Inspection Clean and examine all parts for damage and wear. Emerson recommends O-Rings, DURASTRIP bearings, SAFEKEYS, washers, etc. are replaced using a Hytork XL spares kit. Disassembly Procedure... -
Page 18: Section 10: Assembly Instructions
Section 10: Assembly Instructions Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 Section 10: Assembly Instructions 10.1 Grease Instructions NOTE: Check the product coding on the actuator’s product labels to define which type of grease to use. Table 4. -
Page 19: Pinion Assembly
Installation, Operation and Maintenance Manual Section 10: Assembly Instructions MAC050515 EN Rev. 0 November 2022 10.2 Pinion Assembly Lightly grease all O-Rings, O-Ring grooves, bearing grooves, and pinion. Assemble the top pinion bearing (9) to the pinion, ensuring that the recess openings are facing away from the gear form, then assemble items (8), (17), and (18). -
Page 20: Piston Assembly
Section 10: Assembly Instructions Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 10.4 Piston Assembly 10.4.1 Clockwise Rotation (Pistons moving inwards, refer to Figure 5 [a]). Align the pinion by lining up the center of the NAMUR slot in the top of the pinion with the single dot on the body. -
Page 21: End Cap Assembly On Double-Acting Actuators
Installation, Operation and Maintenance Manual Section 10: Assembly Instructions MAC050515 EN Rev. 0 November 2022 10.6 End Cap Assembly on Double-Acting Actuators Install the SAFEKEY O-Ring seals (12) to the SAFEKEY heads (13). Lightly grease the end cap O-Rings (2), the end cap grooves and the ends of the body bore. -
Page 22: Installing The Spring And End Cap
Section 10: Assembly Instructions Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 10.7.2 Installing the Spring and End Cap For XL 1127 to XL4581 place the retractor plate on top of the piston. Insert the springs (26/27) into the face of the piston and then the end cap onto the springs. - Page 23 Installation, Operation and Maintenance Manual Section 10: Assembly Instructions MAC050515 EN Rev. 0 November 2022 Table 7. SAFEKEY Dimensions (in mm) (in inches) Model Length Diameter Length Diameter XL26 3.175 6.18 0.125 XL71 3.175 8.54 0.125 XL131 3.175 10.51 0.125 XL186 3.175 11.1...
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Page 24: Section 11: Bottom Mounted Stop Block
Section 11: Bottom Mounted Stop Block Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 Section 11: Bottom Mounted Stop Block 11.1 The Hytork Solution On the larger sizes of actuators, the adjustment is obtained by the addition of a simple stop block that fits under the actuator. -
Page 25: General Notes When Fitting To Valves
Installation, Operation and Maintenance Manual Section 11: Bottom Mounted Stop Block MAC050515 EN Rev. 0 November 2022 Figure 8 Bottom Mounted Stop Block Assembly Body (a) Quadrant (d) Double Indents “A” “B” Single Indents Travel Stops (c) Dowels (b) “A” “B”... -
Page 26: Reverse Action Fail-Safe Counterclockwise
Section 11: Bottom Mounted Stop Block Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 11.3.3 Reverse Action Fail-Safe Counterclockwise Air power between the pistons rotates the pinion in a clockwise direction. When the air pressure is removed the springs drive the actuator pinion counterclockwise. 11.4 Actuator Conventions for the Normal Position 11.4.1... -
Page 27: Stop Adjustment (Fail Closed)
Installation, Operation and Maintenance Manual Section 11: Bottom Mounted Stop Block MAC050515 EN Rev. 0 November 2022 11.5.2 Stop Adjustment (Fail Closed) 11.5.2.1 Adjustment for the Closed Position The LEFT hand stop “A” adjusts the CLOSED position. Screw the stop in until it meets the stop face on the quadrant. -
Page 28: Assembly To Valves For Reverse Action Configuration
Section 11: Bottom Mounted Stop Block Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 11.6 Assembly to Valves for Reverse Action Configuration Double-Acting and Fail-Safe Counterclockwise (usually to Fail Open the Valve): Make sure the valve is in the OPEN position if it is to Fail OPEN and in the CLOSED position if it is to Fail CLOSED. -
Page 29: Adjustment Of The Bottom Mounted Stop Block
Installation, Operation and Maintenance Manual Section 11: Bottom Mounted Stop Block MAC050515 EN Rev. 0 November 2022 11.8 Adjustment of the Bottom Mounted Stop Block Actuators are in the NORMAL or CLOSED position when the pistons are together. This is under spring load on a Fail-Safe model or with air pressuring the port “4” (refer to Figure 11) on the actuator body. -
Page 30: Section 12: Testing The Hytork Actuator
Section 12: Testing the Hytork Actuator Installation, Operation and Maintenance Manual November 2022 MAC050515 EN Rev. 0 Section 12: Testing the Hytork Actuator Using compressed air at 80 psi to 100 psi (5.5 bar to 7 bar) check the seal areas with soapy water, ensuring there are no leaks and that the pinion rotates smoothly over its full travel. -
Page 31: Section 13: Retractor Rods
Any damaged or worn rods must not be used and must be destroyed. • Retractor rods must be made to the design specification for safety reasons. Emerson cannot take any responsibility for any other design. Retractor Rods... -
Page 32: Section 14: Service
Section 14: Service It is the policy of Emerson to give the best possible service to our customers. We are happy to assist you in any way we can and if you have any questions about Hytork actuators or other Hytork products, please do not hesitate to contact any Actuation Technologies Center of Emerson or your local Hytork Stocking Distributor. - Page 33 Installation, Operation and Maintenance Manual Section 15: Parts and Materials MAC050515 EN Rev. 0 November 2022 Section 15: Parts and Materials Figure 13 Hytork XL Actuator Parts 22 24 26 27 Table 10. Parts and Materials Pos. Description Material Note Ball Bearing Chromium steel O-Ring (End Cap)
- Page 34 P. R. China Székesfehérvár 8000 T +86 22 8212 3300 Hungary The Emerson logo is a trademark and service mark of Emerson Electric Co. T +36 22 53 09 50 Hytork is a mark of one of the Emerson family of companies.