Emerson Fisher 656 Installation Instructions
Contents
1. LS is EN lA AN IDO Oe IOOOOe APPLY LITHIUM GREASE LUBRICANT ON SURFACES A amp B 40A7798A Enl NO hud VOVO Instruction Manual D100304X012 Instruction Manual 656 Actuator D100304X012 August 2012 Figure 5 Typical Top Mounted Handwheel Assembly for Diaphragm Actuator Size 30 amp 40 D OAN iiz EA S IZZI Ss LE XL L j iy lt gt a LE ea UD POF AZZ E Wo X 1 88e L Sa PAN aS NO NO IN 7 LUBRICATE END OF STEM AND PLATE WITH LITHIUM GREASE LUBRICATE STEM THREADS WITH ANTI SEIZE LUBRICANT 38A1209 D 656 Actuator Instruction Manual August 2012 D100304X012 Figure 6 Typical Top Mounted Handwheel Assembly for Diaphragm Actuator Size 60 A BUUU i ER TZ IZA DA MS Yi A AN MOS Y 4 ay y ew PEOR Tarar a ee S e I AANAANAANIANANS N N N JISOFOOAMOROOES E s NO LUBRICATE END OF STEM AND PLATE WITH LITHIUM GREASE LUBRICATE STEM THREADS WITH ANTI SEIZE LUBRICANT 3280262 8 Instruction Manual D100304X012 Figure 7 Casing Mounted Adjustable Down Travel Stop for Size 30 and 40 Actuators Style 2 y Ey 2 ty Yn AE O APPLY LUB SSKY BV8054 D Casing Mounted Adjustable Down Travel Stop figure 7 Key Description 54 Stop Nut 133 Travel Stop Stem 134 Washer Recommended spare parts z N Ss Nh SH2. U amp Ne o Nek 42 N J a 84 zA 7 ELA NTA Se 141 134 Part Number Key 139 141 187 189 241 Description O Ring nitrile Sizes 30 34 amp 40 Sizes 45 46 50 8 60 Sizes 70 amp 87 Cap Screw Body Travel Stop Cap Jam Nut Lubricant Lithium Grease or equivalent not furnished with travel stop 656 Actuator August 2012 Part Number 1D267306992 1D547106992 1D269106992 656 Actuator Instruction Manual August 2012 D100304X012 Neither Emerson Emerson Process Management nor any of their affiliated entities assumes responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any product remains solely with the purchaser and end user Fisher and Vee Ball are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co Emerson Process Management Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co All other marks are the property of their respective owners The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or their use or applicability All sales are governed by our terms and conditions which are available upon request We reserv
3. office 21 Valve Stem 316 SST Size 30 only 22 Set Screw steel 23 Hex Nut steel 2 req d 25 Warning Nameplate Key Description Part Number 1 Diaphragm Case steel ae Handwheel Assembly 2 Diaphragm Nitrile Size 30 2E791902202 51 Handwheel cast iron Size 40 2E670002202 54 Jam Nut steel 14353724122 Size 60 2E859702202 133 Stem brass 3 Cap Screw steel 135 Pusher Plate Assembly steel 4 Diaphragm Plate cast iron 137 Jam Nut steel 5 Lower Diaphragm Case steel 138 O ring nitrile 6 Actuator Spring steel Size 30 amp 40 1D237506992 7 Down Travel Stop steel Sizes 30 amp 40 3 req d Size 60 18885506992 Size 60 4 req d 139 O ring nitrile 8 Cap Screw steel Sizes 30 amp 40 3 req d Size 60 4 req d Size 30 amp 40 1D267306992 9 Yoke cast iron Size 60 1D547106992 10 Actuator Stem steel 140 Groove Pin steel 11 Lower Spring Seat steel 141 Cap Screw steel Sizes 30 amp 40 6 req d Size 60 8 req d 12 Adjusting Screw brass 142 Handwheel body cast iron 13 Thrust Bearing steel ball bearing 164 Body Extension steel 14 Lower Bearing Seat steel 171 Spacer 416 SST size 60 only Recommended spare parts 7 656 Actuator August 2012 Figure 3 Fisher 656 Size 30 Actuator EE a al A cn ri e E APPLY THREAD LOCKING ADHESIVE HIGH STRENGTH TO SURFACE A CK1580 A0345 1 Figure 4 Fisher 656 Size 40 60 Actuators lt EE ua EA EE ee ee e O gt BS AN TITAN 2 e
4. 1 4 NPT loading pressure connection is located in the top of the upper diaphragm case Using either pipe or tubing connect either the loading pressure connection or valve positioner input connection if a valve positioner is furnished the loading pressure connection to the actuator will be made at the factory to the output pressure connection on the controller Keep the length of the pipe or tubing as short as possible to avoid transmission lag in the control signal Adjustment When the actuator is completely installed and connected to the controller it should be checked for correct travel freedom from friction and correct PDTC or PDTO action 656 Actuator Instruction Manual August 2012 D100304X012 The actuator spring and diaphragm have been selected to meet the requirements of the application It should be noted that the actuator spring has a constant rate of compression and that adjustment of the spring compression merely shifts the initial spring setpoint up or down to make the actuator travel within the initial spring setpoint and the maximum diaphragm pressure indicated on the nameplate In some instances however such as high friction butterfly and ball valves the actuator will fully stroke with less diaphragm pressure than indicated on the nameplate To increase the pressure required to initiate actuator stem movement turn the lower bearing seat key 14 up toward the spring case To decrease the pressure at which movement begins tu
5. Remove the set screw key 22 and remove the adjusting screw to complete disassembly Assembly k Apply lithium grease lubricant or equivalent to the adjusting screw threads key 12 and screw this into the yoke key 9 Replace set screw key 22 The set screw should engage the machined thread relief in the adjusting screw With the eared portion up screw the lower bearing seat key 14 all the way onto the adjusting screw Apply lithium grease lubricant or equivalent to the thrust bearing key 13 and position it on the lower bearing seat key 14 Lay the lower spring seat key 11 on top of the thrust bearing assembly Mount the lower diaphragm case key 5 to the top of the yoke key 9 using the travel stops and cap screws keys 7 and 8 Alternate screws and travel stops on the sizes 30 and 40 See figure 2 for the correct orientation of the size 60 Position the actuator spring key 6 on the lower spring seat Attach the diaphragm plate key 4 to the actuator stem key 10 with the cap screw key 3 Apply lithium grease lubricant or equivalent to the stem Place this assembly actuator stem first into the yoke with the actuator stem through the spring adjustor key 12 Position the diaphragm key 2 on the diaphragm plate key 4 and align the holes with the lower diaphragm casing key 5 Attach the upper diaphragm case key 1 to the lower diaphragm casing key 5 using the cap screws and nuts keys 19
6. and 20 Note When you replace actuator diaphragms in the field take care to ensure the diaphragm casing bolts are tightened to the proper load to prevent leakage but not crush the material 656 Actuator Instruction Manual August 2012 D100304X012 Note Do not use lubricant on these bolts and nuts Fasteners must be clean and dry a The first four bolts tightened should be diametrically opposed and 90 degrees apart Tighten these four bolts to 13 Nem 10 Ibfeft b Tighten the remaining bolts in a clockwise criss cross pattern to 13 Nem 10 Ibfeft c Repeat this procedure by tightening four bolts diametrically opposed and 90 degrees apart to a torque of 27 Nem 20 Ibfeft d Tighten the remaining bolts in a clockwise criss cross pattern to 27 Nem 20 Ibfeft e After the last bolt is tightened to 27 Nem 20 Ibfeft all of the bolts should be tightened again to 27 Nem 20 Ibfeft in a circular pattern around the bolt circle Once completed no more tightening is recommended 8 If the actuator has been removed from its mounting position it on its mounting plate or bracket and secure with Cap screws 9 Attach the pressure pipe or tubing to the loading pressure connection on top of the upper diaphragm case 10 Attach the actuator stem to the stem connector or clevis and adjust the travel by using the appropriate procedure below e For Push Down to Open applications 1 Set the controlled element valve plug louve
7. or loss of control of the process caused by excessive pressure do not exceed the Maximum Pressures listed in table 1 Refer to the following Maximum Pressure Limitations section Instruction Manual 656 Actuator D100304X012 August 2012 Maximum Pressure Limitations The casing and diaphragm of 656 actuators are pressure operated This air pressure provides energy to compress the spring to stroke the actuator and to seat the valve The following explanations describe the maximum pressure limits for an actuator Refer to the nameplate or table 1 for maximum values for your actuator Maximum Casing Pressure for Actuator Sizing This is the maximum pressure that can be applied at less than full travel of the actuator If this stroking pressure is exceeded before the upper diaphragm plate contacts the travel stop damage to the stem or other parts might result Maximum Excess Diaphragm Pressure Additional pressure may be added when the actuator is at full travel If the Maximum Excess Diaphragm Pressure is exceeded damage to the diaphragm or diaphragm casing might result Because the actuator has traveled its specified travel and the diaphragm head is physically stopped from movement the energy from any additional air pressure is transmitted to the diaphragm and diaphragm casings The amount of air pressure that can be added once the actuator has traveled to the stops is limited by the resultant adverse effects that may occur Exceeding this l
8. Instruction Manual 656 Actuator D100304X012 August 2012 Fisher 656 Diaphragm Actuator Contents Figure 1 Fisher 656 Actuator IMEFOGUCHION 53 6 eRwa banw se a a 1 Scope of Manual cuadras 1 DESEADO o eae eee 1 Principle of Operation o ooooooooo o o 2 SPECGTICI ONS 50 oda icons 2 baad Maximum Pressure Limitations 3 SEAL E eee te ans 3 A Git stein aed Sieshes Aneta E 3 MalNtenance ser Sc teeta rosas dad oa 4 Disaster 4 ASS E aii 5 Parts Ordering arrob ros 7 Parts USE a o 7 Handwheel Assembly o oooooccocoocoooo 7 E Casing Mounted Adjustable Down iz A 11 a 3 ey 4 2 W0454 Introduction Scope of Manual This instruction manual includes installation maintenance and parts information for Fisher 656 diaphragm actuators Refer to separate manuals for instructions covering the valve positioner and accessories Description Fisher 656 actuators are long stroke spring opposed direct acting diaphragm actuators They operate Vee Bal control valves butterfly valves built in turbine valves louvers dampers and similar equipment They are suitable for either push down to close PDTC or push down to open PDTO applications and are available in sizes 30 40 and 60 to provide 54 mm 2 125 inch 64 mm 3 5 inch and 105 mm 4 125 inch travel respectively m Do not install operate or maintain a 656 actuator without being fully trained and qualified in valve actu
9. ator and accessory installation operation and maintenance To avoid personal injury or property damage it is important to carefully read understand and follow all the contents of this manual including all safety cautions and warnings If you have any questions about these instructions contact your Emerson Process Management sales office before proceeding man EMERSON www Fisher com Process Management 656 Actuator Instruction Manual August 2012 D100304X012 Table 1 Specifications Maximum Recommended Casing Operating Casing Pressure Connection Pressurel 1 4 NPT internal 2 4 bar 35 psig Maximum Travel Maximum Allowable Casing Pressure 2 MAXIMUM RATED STEM TRAVEL amun Maximum Maximum ACTUATOR SIZE ES Casing EX Diaphraam Standard Optional cess aphrag Actuator Pressure for Diaph Casi Travel Travel Size Actuator ARTIN Sp Sizing 2 Pressure Pressurel2 3 Stop Stop Bar Psig Bar Psig Bar Psig 30 54 2 125 Not available x 97 140 g SB 70 40 5275 60 105 4 125 97 3 8125 50 3460 1 Additional pressure may be added when the actuator is at full travel If the Maxi Actuator Weig ht mum Excess Diaphragm Pressure is exceeded damage to the diaphragm or dia phragm casing might result See the Maximum Pressure Limitation section 2 Maximum diaphragm casing pressure must not be exceeded and must not produce Approximate aforce on the actuator stem greater than the maximum allowable actuator output A
10. ctuator Size Shipping Weight thrust or the maximum allowable stem load See the Maximum Pressure Limitation kg Pounds section 3 This maximum casing pressure is not to be used for normal operating pressure Its 30 23 50 purpose is to allow for typical regulator supply settings and or relief valve tolerances 40 32 70 60 73 160 Operating Temperature Rangel WE 40 to 82 C 40 to 180 F with Nitrile Elastomer Options E 40 to 149 C 40 to 300 F with Silicone WE Top mounted handwheel adjustable travel stop Diaphragm E Casing mounted adjustable down travel stop 1 Control and stability may be impaired if this pressure is exceeded 2 Exceeding this pressure can cause damage to the diaphragm diaphragm casing or other parts 3 The temperature limits in this manual and any applicable standard or code limitation for valve should not be exceeded Principle of Operation In a direct acting diaphragm actuator increasing loading pressure moves the actuator stem downward compressing the spring When the diaphragm pressure is decreased the spring moves the actuator stem upward In the event of failure of the loading pressure the actuator stem moves to the extreme upward position Specifications Refer to table 1 for Specifications of the 656 actuator See the actuator nameplate for specific information for your actuator A WARNING To avoid personal injury or damage to equipment that may result in the malfunction of the control valve
11. ctuator is installed on a control valve isolate or bypass the control valve 2 Shut off the diaphragm loading pressure and remove the pipe or tubing from the loading pressure connection in the top of the diaphragm case 3 Turn the lower bearing seat key 14 down away from the spring case to relieve all spring compression 4 If the entire actuator is to be removed from its mounting disconnect the actuator stem key 10 from the stem connector clevis etc and remove the jam nuts key 23 Loosen the cap screws that hold the yoke key 9 to its mounting plate or bracket and lift the entire actuator from its mounting 5 Remove the diaphragm case cap screws and nuts keys 19 and 20 and lift the upper diaphragm case key 1 off the actuator Remove the diaphragm key 2 6 Lift out the diaphragm plate key 4 and stem key 10 They may be separated by removing the cap screw key 3 Instruction Manual 656 Actuator D100304X012 August 2012 Figure 2 Travel Stop Orientation for Size 60 9 MOUNTING BOSS ON ACTUATOR YOKE LOCATE FOUR TRAVEL STOPS MARKED A MOUNTING BOX 11A0001 A ON ACTUATOR YOKE Take out the actuator spring key 6 The lower diaphragm case key 5 can be removed from the yoke if required by loosening the travel stops and cap screws keys 7 and 8 Remove the lower spring seat key 11 and thrust bearing key 13 Unscrew the lower bearing seat key 14 from the adjusting screw key 12 10
12. e the right to modify orimprove the designs or specifications of such products at any time without notice Emerson Process Management Marshalltown lowa 50158 USA Sorocaba 18087 Brazil Chatham Kent ME4 4QZ UK Dubai United Arab Emirates Singapore 128461 Singapore MAMA sz E M ERSO N O 1974 2012 Fisher Controls International LLC All rights reserved Al a a 2
13. imiting factor could result in leakage or casing fatigue due to the deformation of the upper diaphragm casing Maximum Diaphragm Casing Pressure If the Maximum Diaphragm Casing Pressure is exceeded damage to the diaphragm diaphragm casing or actuator might result Installation When an actuator and valve are shipped together the actuator is normally mounted on the valve Follow the valve instructions when installing the valve and actuator in a pipeline If the actuator is shipped separately or if it is necessary to mount the actuator on the valve four holes have been tapped into the yoke boss to anchor it to a mounting bracket A WARNING Always wear protective gloves clothing and eyewear when performing any maintenance operations to avoid personal injury To avoid personal injury or property damage caused by bursting of pressure retaining parts be certain the diaphragm casing pressure does not exceed the limits listed in the Specifications table Use pressure relieving or pressure limiting devices to prevent the diaphragm casing pressure from exceeding these limits If installing into an existing application also refer to the WARNING at the beginning of the Maintenance section in this instruction manual To make the stem connection follow the appropriate assembly step 10 in the Maintenance section Standard actuator sizes 30 and 40 have mounting holes tapped 3 8 inch UNC and the size 60 mounting holes are tapped 1 2 inch UNC A
14. r damper etc in the closed position 2 Turn the lower bearing seat key 14 up toward the spring case far enough to ensure that the actuator stem is at the top of its stroke 3 Make the actuator stem connection making sure that there is full engagement of the actuator stem threads Tighten slightly 4 Apply loading pressure to the diaphragm case to move the controlled element toward its wide open position Screw the controlled element linkage into the actuator stem connection far enough to move the controlled element toward its closed position 3 2 mm 1 8 inch and tighten the stem connection securely This adjustment ensures that the controlled element will close before the actuator stem travels to the top of its stroke The travel stops key 7 in the lower diaphragm case ensure correct travel of the controlled element in the open direction 5 If travel starts at a lower or higher pressure than is required for proper operation turn the lower bearing seat key 14 up or down respectively as described in the Adjustment section e For Push Down to Close applications 1 Set the controlled element valve plug louver damper etc in the open position 2 Turn the lower bearing seat key 14 up toward the spring case far enough to ensure that the actuator stem is at the top of its stroke 3 Tighten the actuator stem connection slightly making sure that there is full engagement of the actuator stem threads 4 Apply loading pres
15. rn the lower bearing seat down away from the spring case Maintenance A WARNING Avoid personal injury or property damage from sudden release of process pressure or uncontrolled movement of parts Before performing any maintenance operations e Do not remove the actuator from the valve while the valve is still pressurized e Always wear protective gloves clothing and eyewear when performing any maintenance operations to avoid personal injury e Disconnect any operating lines providing air pressure electric power or a control signal to the actuator Be sure the actuator cannot suddenly open or close the valve e Use bypass valves or completely shut off the process to isolate the valve from process pressure Relieve process pressure from both sides of the valve Drain the process media from both sides of the valve e Ventthe power actuator loading pressure and relieve any actuator spring precompression e Use lock out procedures to be sure that the above measures stay in effect while you are working on the equipment e The valve packing box may contain process fluids that are pressurized even when the valve has been removed from the pipeline Process fluids may spray out under pressure when removing the packing hardware or packing rings or when loosening the packing box pipe plug e Check with your process or safety engineer for any additional measures that must be taken to protect against process media Disassembly 1 If the a
16. sure to the diaphragm case and observe the travel of the controlled element to make sure that it closes completely If the travel is not correct it can be changed by screwing the controlled element linkage in or out of the stem connection When the travel is set correctly tighten the stem connection securely and lock the jam nuts key 23 5 If travel starts at a lower or higher pressure than is required for proper operation turn the lower bearing seat in or out respectively as described in the Adjustment section 656 Actuator August 2012 Instruction Manual D100304X012 Parts Ordering When corresponding with your Emerson Process Management sales office about this equipment refer to the serial number found on the actuator nameplate A WARNING Use only genuine Fisher replacement parts Components that are not supplied by Emerson Process Management should not under any circumstances be used in any Fisher valve because they may void your warranty might adversely affect the performance of the valve and could cause personal injury and property damage Pa rts List Key Description Part Number 17 Nameplate SST 18 Drive Screw SST 6 req d tt 19 Cap Screw steel Size 30 12 req d Size 40 16 req d Note Size 60 24 req d Part numbers are shown for recommended spares only For Part 20 Hex Nut steel Size 30 12 req d Size 40 16 req d numbers not shown contact your Emerson Process Management sales Size 60 24 req d
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