Emerson 685SE Installation Instructions
Contents
1. NJ NJ 7M anm M NJ NJ Ul Ul r r Pom A QM j Ae gt FE UJ UJ eme a QJ Ww 7M 7M A oO A WO wI GI AN N D N r UJ Ae A A A Ae d ie E onm onm M m UJ Ww as ae Ae UJ A Instruction Manual 685SE 685SR Piston Actuator 0103799 012 September 2014 Table 5 Approximate Weights for Constructions with Handwheels ACTUATOR APPROXIMATE WEIGHT FOR ACTUATOR SIZE kg Ibs iui m m NM 51 167 1 00 1731383 1804410 199 438 casse 36 52 1330 621 1370 475 1048 658 1450 504 1111 6942. 147 324 156 344 174 383 192 423 210 462 227 50 245 54 63 nm M x x onm x onm onm onm onm 231 510 479 1056 510 1124 704 1551 802 1768 957 2110 52 556 310 683 358 789 514 1132 551 1215 750 1654 855 1884 1009 2225 273 601 336 740 387 852 548 1209 592 1305 797 1757 907 2000 1061 2339 35 64 415 916 360 2116 693 388 855 444 979 617 1361 890 1962 1012 2232 1165 2569 3 414 913 473 1042 652 1437 937 2065 1065 2348 784 440 971 502 1106 686 1513 983 2168 1118 2464 29 466 1028 530 1169 1170 2580 875 559 1233 756 1667 838 1848 1076 2373 1223 2696 2 519 1143 588 1296 790 1742 879 1939 1123 2476 1275 2812 438 966 545 1201 617 1359 921 2029 1170 2578 1328 2928 459 1012 242 533 253 557 368 812 497 1096 578 1273 784 1727 895 1973 1127 2485 75 60 398 878 348 2089 297 654 380 837 429 945 570 1257 877 1933 1000 2206 1231 2714 318 702 407 898 459 1012 923 2035 40 75 435 958 489 1079 643 1417 970 2138 62 798 462 1019 520 1146 679 1497 84 847 490 1079 550 1212 1063 2344 4061895 5170140 5801279 428 943 545 1201 611 1346 788 1738 906 1997 1156 2549 572 1261 641 1413 600 1322 671 1480 861 1898 98
3. 7 If the total travel is adequate tighten the stem connector key 18 securely lock the stem locknuts if present against the connector and adjust the indicator scale key 22 on the yoke key 21 to show valve plug position 8 Provide a gauge if necessary to measure the pressure to the actuator Make a final adjustment on the positioner to set the starting point of valve travel and to obtain full travel for the given instrument range Handwheel Operation If manual operation is required the actuator should be equipped with a manual handwheel for sizes 10 to 26 CAUTION To avoid damage to actuator parts and difficult operation of actuator handwheels open the bypass valve key 66 before using a handwheel The bypass assembly is furnished only when a handwheel actuator is specified The bypass allows the pressure to equalize on either side of the piston so that the manual actuator can be used to position the control valve Flow through the bypass tubing is controlled by an angle needle valve which is operated manually This valve should be closed when air pressure is being used to operate the actuator Key numbers referenced in the following steps are shown in figure 4 and 5 Refer to table 7 for handwheel specifications 1 Open the bypass valve 2 Rotate the handwheel key 45 to position the override engage pin key 38 with the hole in the stem connector key 10 Turn the engage pin control knob key 33 clockwise to insert
4. A 536 1183 635 1400 704 1552 947 2088 1079 2378 1289 2842 1431 557 1229 662 1459 732 1615 983 2168 1121 2472 1335 2944 1482 1019 2248 1164 2566 1534 357 788 471 1038 666 1468 743 1638 933 2057 1034 486 1071 685 1510 764 1685 956 2108 1060 463 1022 723 1594 807 1779 1002 2209 1112 491 1084 761 1677 849 1872 1048 2310 1163 435 959 520 1146 799 1761 48 1208 937 184 76 1270 875 1929 7M UJ NJ S I 3382 2280 2337 2451 2565 2679 2792 2906 3020 NJ UJ UJ A N NJ imm i 7M Pom x 185 40 230 39 52 59 572 279 616 299 660 04 39 748 59 792 79 836 Ul _ I oo A um OEN NJ BIR NJ NJ 7M D i onm Ul onm onm x 892 1966 1094 2411 1215 934 2
5. 613 1351 745 1642 817 1801 1103 2432 1231 271 1461 3221 1628 Table 6 Lifting Point Load Ratings NUMBER OF LIFTING MAXIMUM LOAD ACTUATOR SIZE LIFTING ORIENTATION POINTS USED 12 to24 Actuator Centerline Horizontal 10 610 24 00 261028 12 to 24 Actuator Centerline Vertical 26 to 28 685SE 685SR Piston Actuator Instruction Manual September 2014 D103799X012 Installation WARNING Always wear protective gloves clothing eyewear when performing any installation operations to avoid personal injury To avoid personal injury or property damage caused by bursting of pressure retaining parts be certain the cylinder pressure or other pressure ratings do not exceed the limits listed in table 1 Use pressure limiting or pressure relieving devices to prevent cylinder pressure or other pressures from exceeding these limits Check with your process or safety engineer for any additional measures that must be taken to protect against process media If installing into an existing application also refer to the WARNING at the beginning of the Maintenance section in this instruction manual Dropping the actuator and any attached accessories and or valve may cause personal injury and or equipment damage For all mounting procedures use an adequately sized chain sling hoist or crane to handle the actuator and any attached accessories and or va
6. 1529 474 1046 730 1609 766 1688 302 176 838 1849 1282 647 1426 875 1928 608 1341 675 1489 911 2008 675 1489 697 1536 739 1630 782 172 824 181 867 191 Pm 432 953 603 447 985 m aam 853 1881 941 2075 967 2132 2246 2359 2473 2586 2700 2814 2927 876 1932 922 2033 1019 968 2134 1070 1014 2235 1122 1060 2336 1173 909 2004 1106 2438 11225 951 2098 1152 2539 1276 994 2191 1197 2640 1328 1036 2285 1243 2741 1379 _ A D _ _ N _ as onm UJ i gt 7M 7M UJ _ Pam lt _ lt 33 52 70 816 89 857 98 39 0 onm 16 548 s 56 631 311 686 7M Ul UJ 77M 7M NJ i 7M AeA UJ A amam gt onm 603 NJ A UJ UJ
7. be necessary to apply a temporary loading pressure to the bottom cylinder pressure connection to move the piston rod away from the valve stem during removal If it is not possible to provide a temporary loading pressure exercise caution when removing the actuator to prevent damage to the valve stem or piston rod 685SE 685SR Piston Actuator Instruction Manual September 2014 D103799X012 1 Disconnect the actuator tubing from the pressure connections on the upper lower head and outer spring cartridge keys 1 9 and 23 and positioner Note Refer to the appropriate instruction manual for any maintenance or adjustments that need to be made on the positioner A WARNING To avoid personal injury due to the sudden uncontrolled movement of parts do not loosen the stem connector cap screws when the stem connector has spring force applied to it 2 Break the stem connection by removing hex nuts key 62 lock washers key 10 and studs key 63 from the stem connector key 18 3 Depending on the yoke boss size there is either a yoke locknut or bonnet to actuator bolting securing the actuator to the valve bonnet Remove whichever is present 4 For 685SE Actuators Using the lifting points along the outside perimeter of the outer spring cartridge key 23 attach appropriate rigging gear to both lifting points and lift the actuator away from the valve bonnet and stem For 685SR Actuators Thread two lifting eyes into the free ports on the upper
8. head key 1 180 degrees apart Reference tables 4 and 5 for approximate weights of the actuator to select an appropriate lifting eye Attach appropriate rigging gear to both lifting eyes and lift the actuator away from the valve bonnet and stem 5 Refer to the Actuator Mounting section of this manual for instructions on mounting and installing the actuator onto a valve 685SE Seal and O ring Replacement The following procedure is for the replacement of the internal piston seals bearing seals and O rings If the actuator has a handwheel manual override proceed to step 1 otherwise proceed directly to step 7 1 Using the same rigging and lifting points as in the Actuator Removal section place the actuator right side up with the yoke key 21 flat against the ground Place either a flat piece of plywood or cloth under the outer spring cartridge to protect the paint from scratches and chips 2 Measure the gap between the piston rod key 17 and the engage disengage block key 43 up to 1 8 inch and make note as this will be used during reassembly 3 Remove the set screw key 36 from the engage disengage block key 43 4 Remove the hex head cap screws key 20 and lock washers key 10 that secure the yoke key 21 to the lower head key 9 5 Using the same lifting eyes as in the Actuator Removal section attach appropriate rigging gear and remove the cylinder assembly from the yoke key 21 The rigging gear should allow the cyl
9. head seal groove 9 Remove tie bolts key 3 from lower head key 9 Instruction Manual 685SE 685SR Piston Actuator D103799X012 September 2014 10 Thread a suitable lifting eye into the free port on the top of the piston rod key 17 11 Lift or hoist the piston assembly keys 5 6 7 17 and 19 out from cylinder key 4 and place on a flat surface upside down 12 Remove the wear ring key 6 and quad seal key 7 from the piston key 5 13 Thread locking compound is applied to the threads by the manufacturer during initial assembly As a result disassembly will require heating to loosen the thread locking compound To remove the piston rod O ring key 19 heat the piston assembly using a torch and unthread the piston rod key 17 from the piston key 5 14 After the piston rod key 17 has completely cooled remove the piston rod O ring key 19 Clean the piston rod O ring groove with a light degreaser Lightly grease a new piston rod O ring and install onto the piston rod 15 Reinstall piston rod key 17 onto piston key 5 using thread locking compound 16 Clean piston seal grooves Install new lightly greased quad seal key 7 onto piston key 5 17 Without grease trim to length and then install a new wear ring key 6 18 Lift cylinder key 4 vertically and place on a flat surface Take extra precaution to avoid scratching or gouging the inner diameter of the cylinder 19 Remove the O ring key 2 from the lowe
10. 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 Description The 685SE and 685SR are medium to large spring return double acting piston actuators that provide accurate high thrust output for short to long travel applications These actuators are designed for use with a variety of medium to large Fisher sliding stem control valves including the easy e FB TBX CVX HP EH and 461 These actuators feature an internal bias spring that forces the actuator piston rod to extend 685SE or retract 685SR upon a loss of supply pressure thereby ensuring a fail closed or fail open mode of operation This effectively eliminates the need for a trip valve and volume tank in most constructions LIT EMERSON www Fisher com Process Management 6855 6855 Piston Actuator September 2014 Table 1 Specifications Operating 1 Minimum 2 7 bar 40psig Maximum Allowable 10 3 bar 150 psig Consult your Emerson Process Management sales office for supply pressures under 2 7 bar 40 psi 2 25 mm 1 inch through 610 mm 24 inch See table 2 Thrust Capabilities Designed to meet the application requirements Piston Diameter and 2 Available in 51 mm 2 inch increments between 254 mm 10 inch and 711 mm 28 inch See table 2 Operative Temperat
11. 059 1140 2512 1267 977 2153 1185 2614 1318 1019 2247 1231 2715 1370 UJ U1 onm onm NJ U1 Ul SS WI UJ S NJ P omen UJ rtm 502 1106 604 1332 667 1469 913 2013 524 1155 632 1394 697 1536 951 2096 1061 2340 1277 2816 1421 191 42 99 880 546 1204 660 1456 727 1602 989 2180 1104 2434 1323 2917 1473 25 1 00 51 2 00 102 4 00 04 45 152 6 00 218 480 203 8 00 231 509 254 10 00 44 538 6855R 57 568 62 297 655 310 684 419 924 688 1518 757 1669 1027 2264 1146 2527 1369 3018 1525 D aile M 7M UJ A 3248 3361 3475 3589 Pom onm Pom Pam M UJ M 1 Pam UJ N eumd ii m lm 559 22 00 24 714 439 968 591 1302 716 1580 787 1735 1065 2348 1189 2621 1415 3120 1576 37 743 459 1012
12. 4 Without grease install a new piston wiper seal key 15 onto the bearing 14 Reinstall bearing assembly keys 12 13 14 and 15 into lower head key 9 and secure in place with the bearing retaining ring key 16 15 Remove the O ring key 2 from the lower head key 9 and clean the groove with a light degreaser 16 Lightly grease the new O ring key 2 and install on lower head key 9 17 Remove tie bolts key 3 from upper head key 1 18 Lift piston assembly keys 5 6 7 17 and 19 out from cylinder key 4 and place on a flat surface 19 Remove the wear ring key 6 and quad seal key 7 from the piston key 5 20 Thread locking compound is applied to the threads by the manufacturer during initial assembly As a result disassembly will require heating to loosen the thread locking compound To remove the piston rod O ring key 19 heat the piston assembly using a torch and unthread the piston rod key 17 from the piston key 5 21 After the piston rod key 17 has completely cooled remove the piston rod O ring key 19 Clean the piston rod O ring groove with a light degreaser Lightly grease a new piston rod O ring and install onto the piston rod 22 Reinstall piston rod key 17 onto piston key 5 using thread locking compound 23 Clean piston seal grooves Install new lightly greased quad seal key 7 onto piston key 5 24 Without grease trim to length and then install a new wear ring key 6 25 Lift cyl
13. 8 2178 1249 2754 1422 3135 1648 3633 627 1382 897 1978 1029 2269 1475 3251 1700 onm Pm E i NJ Pom Pm Pm S gt UJ UJ A UJ 35 356 76 397 UJ 7M TE P zum d omes M M 7M 7M NJ 7M oj Ul UJ oo 299 317 69 34 73 52 776 165 363 174 384 193 42 212 468 32 51 251 55 70 59 289 638 08 680 28 722 47 765 66 807 85 849 59 nm x anm nm NJ A Pom Pm ZNS w w WISIS SISI m amj nm n anm i onm
14. A NJ Ul NJ UJ IN 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 320r51 1 1 2 2 25 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 N Ul 356 06 57 508 559 610 711 JA 320 51 1 1 NJ UJ 1 Consult your Emerson Process Management sales office for additional sizes 685SE 685SR Piston Actuator Instruction Manual September 2014 D103799X012 Table 3 Pressure Connections Aem SUPPLY CONNECTION Size NPT Quantity Top Bottom m 3 4 2 2 standard 2 2 standard 3 4 standard 1 or 1 1 4 2 2 standard 14to 28 4 1 4 3 dard 1 or 1 1 L 14 standard 1 or 2 2 standard for 3 4 NPT only Table 4 Approximate Weights for Constructions without Manual Override MAX VALVE APPROXIMATE WEIGHT FOR ACTUATOR SIZE kg lbs ACTUATOR TRAVEL Mr 00 109 24 114 25 122 270 152 6 00 131 289 203 8 00 140 308 254 10 00 148 327 6855 1305 12 00 157 34 56 14 00 165 36 406 16 00 174 384 457 18 00 183 403 508 20 00 191 42 59 22 00 200 441 610 24 00 209 460 221 487 462 1018 25 1 00 127 28 51 2 00 132 29 102 4 00 142 31 152 6 00 151 333 203 8 00 161 354 254 10 00 170 37 68558 305 12 00 180 39 56 14 00 189 417 406 16 00 199 43 457 18 00 208 45 08 20 00 218 48 559 22 00 227 501 10 24 00 237 522
15. Instruction Manual 685SE 685SR Piston Actuator D103799X012 September 2014 Fisher 685SE and 685SR Piston Actuator Contents Figure 1 Fisher 685SE Piston Actuator I EFOCIEICEIOTI occa Deor Braet 1 Scope of Marital o ERES 1 DescrIpHol Sedi pe dade ues 1 SPECIFICATIONS 255 OPE ES Gr 2 Principle of Operation 3 InstallatiQhn 6 Three Way Valve Applications Note 6 Actuator Mounting Handwheel Operation 9 Maintenance wasn eine 9 Actuator Removal 9 685SE Seal and Replacement 10 685SR Seal and O ring Replacement 12 Parts ORderipit 14 14 E 15 Introduction Scope of Manual This instruction manual provides information on the installation maintenance and parts ordering for Fisher 685SE and 685SR piston actuators Refer to separate instruction manuals for information regarding other equipment and accessories used with these actuators Do not install operate or maintain 685SE or 685SR actuators without being fully trained and qualified in valve actuator and accessory installation operation and maintenance To avoid personal injury or property damage it is important to carefully read understand and follow all
16. e actuator cannot suddenly open or close the valve Use bypass valves or completely shut off the process to isolate the valve from process pressure Relieve process pressure on both sides of the valve Drain the process media from both sides of the valve e Use lock out procedures to be sure that the above measures stay in effect while you work 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 WARNING The outer and inner spring cartridge keys 23 and 57 contains a spring under compression Do NOT attempt to dismantle any part of the spring cartridge without first consulting your local Emerson Process Management sales office to avoid personal injury Instructions are given below for complete disassembly of the actuator seal replacement and O ring replacement When inspection or repair is necessary disassemble the actuator only as far as is required to accomplish the job Key numbers referenced in the following steps are shown in figures 2 3 4 and 5 Actuator Removal The following procedure is for the removal of the actuator from a valve For 685SE actuators only It may
17. e bolt hex nuts key 11 onto tie bolts key 4 Torque in a crisscross pattern according to table 8 If the actuator has a handwheel manual override proceed to step 31 otherwise proceed directly to step 35 31 Remove the hex head cap screws key 20 and lock washers key 10 that secure the yoke key 21 to the lower head key 9 32 Using the same lifting eyes as in the Actuator Removal section attach appropriate rigging gear and remove the cylinder assembly from the yoke key 21 The rigging gear should allow the cylinder to be rotated freely Rotate the cylinder assembly to screw the engage disengage block key 43 onto the piston rod key 17 until the gap measured in step 2 is achieved 33 Tighten the set screw key 36 into the engage disengage block key 43 34 Secure the cylinder assembly to the yoke using the hex head cap screws key 20 and lock washers key 10 Torque in a crisscross pattern according to table 8 35 Refer to the Actuator Mounting section of this manual for instructions on mounting and installing the actuator onto a valve 685SE 685SR Piston Actuator Instruction Manual September 2014 D103799X012 Parts Ordering When corresponding with your Emerson Process Management sales office about this equipment refer to the serial number found on the actuator nameplate Also specify the complete 11 part number from the following Parts List when ordering replacement parts WARNING Use
18. ear and remove the cylinder assembly from the yoke key 21 The rigging gear should allow the cylinder to be rotated freely Rotate the 685SE 685SR Piston Actuator Instruction Manual September 2014 D103799X012 cylinder assembly to screw the engage disengage block key 43 onto the piston rod key 17 until the gap measured in step 2 is achieved 35 Tighten the set screw key 36 into the engage disengage block key 43 36 Secure the cylinder assembly to the yoke using the hex head cap screws key 20 and lock washers key 10 Torque in crisscross pattern according to table 8 37 Refer to the Actuator Mounting section of this manual for instructions on mounting and installing the actuator onto a valve Table 8 Tie Bolt Torque TORQUE BOLT DIAMETER Ibf ft NENNEN INNEN 2502 54 2 7 2427 p 1 2 00000166 488 5 3 16 5 3 718 1 15 26 39 94 45 662 685SR Seal O ring Replacement The following procedure is for the replacement of the internal piston seals bearing seals and O rings 1 Complete Actuator Removal procedures above Using the same rigging and lifting points as in the Actuator Removal section place the actuator upright with the yoke key 21 flat against the ground Place either a flat piece of plywood or cloth under the yoke to protect against damage Using straps secure the actuator to a solid structure to pr
19. event it from falling over If the actuator has a handwheel manual override proceed to step 2 otherwise proceed directly to step 6 2 Measure the gap between the piston rod key 17 and the engage disengage block key 43 up to 1 8 inch and make note as this will be used during reassembly 3 Remove the set screw key 36 from the engage disengage block key 43 4 Remove the hex head cap screws key 20 and lock washers key 10 that secure the yoke key 21 to the lower head key 9 5 Using the same lifting eyes as in the Actuator Removal section attach appropriate rigging gear and remove the cylinder assembly from the yoke key 21 The rigging gear should allow the cylinder to be rotated freely Rotate the cylinder assembly to unscrew the engage disengage block key 43 from the piston rod key 17 After the engage disengage block is removed secure the cylinder assembly to the yoke using the hex head cap screws key 20 and lock washers key 10 6 Loosen tie bolt hex nuts key 11 in a crisscross pattern Remove tie rod hex nuts and lock washers key 10 7 Using the same lifting eyes as in the Actuator Removal procedure lift or hoist the upper head key 1 off of the cylinder key 4 Place the upper head onto wooden blocks or other material that will not cause damage with the O ring side facing up 8 Remove O ring key 2 from the upper head key 1 and clean the seal groove Install lightly greased new O ring into upper
20. inder key 4 vertically and place on a flat surface Take extra precaution to avoid scratching or gouging the inner diameter of the cylinder 26 Remove O ring key 2 from the upper head key 1 and clean the seal groove Install lightly greased new O ring into upper head seal groove 27 Install cylinder key 4 onto upper head key 1 making sure the O ring key 2 does not move out of its groove 28 Carefully install the piston assembly keys 5 6 7 17 and 19 into cylinder key 4 making sure all seals and O rings stay in place on the outside diameter of the piston key 5 29 Install tie bolts key 3 into upper head key 1 30 Carefully install lower head key 9 onto cylinder key 4 taking care not to damage threads on the tie bolts key 3 Be sure the O ring key 2 is in place during this step 31 Install lock washers key 10 and tie bolt hex nuts key 11 onto tie bolts key 4 Torque in a crisscross pattern according to table 8 If the actuator has a handwheel manual override proceed to step 32 otherwise proceed directly to step 37 32 Re position the actuator so it is right side up with the yoke key 21 flat against the ground Cloth or wood should be used to prevent against paint damage 33 Remove the hex head cap screws key 20 and lock washers key 10 that secure the yoke key 21 to the lower head key 9 34 Using the same lifting eyes as in the Actuator Removal section attach appropriate rigging g
21. inder to be rotated freely Rotate the cylinder assembly to unscrew the engage disengage block key 43 from the piston rod key 17 After the engage disengage block is removed secure the cylinder assembly to the yoke using the hex head cap screws key 20 and lock washers key 10 6 Using the same rigging and lifting points as in the Actuator Removal section place the actuator upside down with the outer spring cartridge key 23 flat against the ground Place either a flat piece of plywood or cloth under the outer spring cartridge to protect the paint from scratches and chips 7 Remove the lower head key 9 from the yoke key 21 by removing hex head cap screws key 20 and lock washers key 10 Instruction Manual 685SE 685SR Piston Actuator 0103799 012 September 2014 8 Loosen tie bolt hex nuts key 11 in a crisscross pattern Remove tie rod hex nuts and lock washers key 10 9 Remove lower head key 9 from cylinder key 4 and place the O ring side down onto wooden blocks or other material that will not scratch or gouge the lower head 10 Extract bearing assembly keys 12 13 14 and 15 from lower head key 9 by removing the bearing retaining ring key 16 11 Remove the piston wiper seal key 15 O ring key 13 and quad seal key12 from the bearing key 14 12 Clean bearing key 14 with a light degreaser if needed 13 Lightly grease the new O ring key 13 and quad seal key 12 then install onto bearing key 1
22. lve Use caution during lifting and handling to prevent slippage swinging faulty equipment connections or sudden shock loads CAUTION Special care must be taken when installing an actuator in a horizontal service orientation To avoid cantilever loads on the valve stem and yoke it is the customer s responsibility to ensure proper support for a horizontal actuator When an actuator and control valve are shipped together as a control valve assembly the actuator is normally mounted on the valve Follow the valve instructions when installing the valve in the pipeline If the actuator is shipped separately or if it is necessary to mount the actuator on the valve perform the actuator mounting procedures in this instruction manual Refer to the individual product instruction manuals for the installation or mounting of a FIELDVUE DVC6200 digital valve controller or 3610 positioner If the actuator is being installed without a positioner the cylinder loading pressures should be supplied through a 4 way solenoid valve or a switching valve Pressure connection locations are indicated below e 685SE Actuators Side of the outer spring cartridge and bottom of the lower head 685SR Actuators Top of the upper head and side of the outer spring cartridge The supply pressure medium should be clean dry filtered air If the supply source is capable of exceeding the maximum actuator operating pressure or positioner supply pressure appropriate steps mus
23. nt sales office for applications requiring low or hi 4 Contact your Emerson Process Management sales office for applications requiring a manua Specifications h temperature requirements override on a size 28 actuator Specifications for the 685SE and 6855 piston actuators are shown in table 1 Refer to the nameplate affixed to the actuator yoke for specifications specific to individual constructions Instruction Manual 685SE 685SR Piston Actuator D103799X012 September 2014 Principle of Operation 685SE and 685SR piston actuators utilize a piston that moves inside of a cylinder to generate thrust A seal contained on the circumference of the piston provides a seal between the piston and the cylinder preventing supply pressure leakage A bias spring that is either below or above the piston depending on construction will retract or extend the piston rod upon loss of supply pressure This fail action will result in forcing an attached control valve to either fail open or fail closed From an equilibrium state the actuator operates by reacting to a force unbalance that is created by increasing supply pressure on one side of the piston and decreasing it on the other This moves the piston up or down and results in a repositioning of the attached control valve Travel can be adjusted using travel limits within a valve positioner which limit the travel range of the actuator The optional handwheel manual override does not have the ability t
24. ny product Responsibility for proper selection use and maintenance of any product remains solely with the purchaser and end user Fisher easy e and FIELDVUE 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 reserve the right to modify or improve 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 wwwfishercom ERSON Process en L 2013 2014 Fisher Controls International LLC All rights reserved dad cds rrt M rc EE
25. o act as a hard travel stop An optional handwheel or hydraulic hand pump manual override is capable of extending or retracting the actuator manually and can be engaged at any position from full open to full close This handwheel override utilizes a worm gear assembly that is attached to the stem connector and not attached to the cylinder or piston rod This enables the handwheel manual override function to reposition the control valve even if the actuator cylinder or piston is removed for maintenance The hydraulic hand pump override utilizes a hydraulic cylinder that is connected to the piston rod which is controlled by a manual hand pump Table 2 Standard Constructions VALVE TRAVEL omit 90 3906 3 3906 EE E UL 28 BILE or 2 5H or 7 5 5 5 5 5 N UJ NJ Ul NJ UJ NJ BH 32 51 54 5 UJ NJ Ul NJ UJ 0 32 51 NJ Ul NJ UJ UJ UJ A A IN 25 320 51 1 1 NJ Ul NJ UJ A A NJ A 320r51 1 1 i i a i 4 4 EE NJ Ul NJ UJ JA 320 51 1 1 NJ Ul JA 320 51 1 1 OQ NI AO O CO 2 or 1 1 4 2 5 5 2 1270 178 5Hor7 2 2 NJ Ul NJ UJ 32 51 EX x ER
26. od 18 Stem Connector 19 Piston Rod O ring 20 Hex Head Cap Screw 21 Yoke 22 Travel Scale 23 Outer Spring Cartridge 57 Inner Spring Cartridge 58 Spring Cartridge Wear Ring 59 Socket Set Screw 60 Piston Rod Stud 61 Spring 62 Stem Connector Hex Nut 63 Stem Connector Stud 100 Multi purpose grease MPG2 or approved equivalent 6855 6855 Piston Actuator September 2014 Manual Handwheel Parts figures 4 and 5 Key Description 24 ACME Thrust Shaft 25 Override Guide Shaft 26 Worm Gear 27 Thrust Shaft Upper Bushing 28 Thrust Shaft Bushing 29 Thrust Bearing 30 Thrust Guide Block 31 Engage Pin Guide 32 Guide Block Engage Screw 33 Engage Pin Control Knob 34 Engage Spring Pin 35 Socket Head Cap Screw 36 Socket Set Screw 37 Key 38 Override Engage Pin 39 Position Indicator 40 All Thread Stud 41 Flat Washer 42 Yoke Adaption Bracket 43 Engage Disengage Block 44 Stem Connector Stud 45 Handwheel 46 Helix Housing Cap O ring 47 Helix Gear Shaft Bushing 48 Helix Gear Bearing 49 Helix Worm Gear Housing 50 Helix Worm Gear 51 Helix Gear Shaft Spacer 52 Helix Shaft Wiper Seal 53 Helix Worm Gear Shaft 54 Helix Gear Housing Cap 55 Ext Tooth Lock Washer 56 Pointer 15 Instruction Manual 6855 6855 Piston Actuator September 2014 D103799X012 Figure 2 Fisher 685SE Piston Actuator 16 Instruction Manual 685SE 685SR Piston Actuator 0103799 012 September 2014 Figu
27. 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 Parts Kits Includes all soft seals and O rings required for seal and O ring replacement in standard operating temperature constructions Refer to figures 2 and 3 Temperature Temperature 685 000252 R685X000272 R685X000292 Piston Rod Wiper Seal key 15 NN a Bearing Quad Seal Key 12 Piston Rod O ring Key 19 685 000042 685 000122 685 000202 Piston Wear Ring Key 6 R685X000052 R685X000132 R685X000212 Piston Quad Seal Key 7 R685X000062 R685X000142 R685X000222 Upper Lower Head O ring Key 2 Upper Lower Head O ring Key 2 um uu EO Mus R685X000082 R685X000162 R685X000242 R685X000262 R685X000282 R685X000302 14 Instruction Manual D103799X012 Parts List Note For part numbers not shown contact your Emerson Process Management sales office Common Parts figures 2 3 4 and 5 Key Description Upper Head Upper Lower Head O ring Tie Bolt Cylinder Piston Piston Wear Ring Piston Quad Seal 9 Lower Head 10 Lock Washer 11 Tie Bolt Hex Nut 12 Bearing Quad Seal 13 Bearing O ring 14 Bearing 15 Piston Rod Wiper Seal 16 Bearing Retaining Ring 17 Piston R
28. ppropriate lifting eye Attach appropriate rigging gear to the lifting eyes NJ Lower the actuator onto the valve bonnet a Forthe 90 5 mm 3 9 16 inch yoke boss Slowly lower the actuator down onto the valve As the yoke passes over the end of the valve stem place the yoke locknut over the valve stem Once the actuator is in place screw the yoke locknut onto the valve bonnet and tighten b Forall other yoke bosses Slowly lower the actuator down onto the valve Once the actuator is in place insert the bonnet to actuator bolts and tighten the hex nuts UJ Turn the two stem locknuts if present all the way onto the valve stem thread D gt Starting with the piston rod fully retracted manually or with air pressure extend the piston rod to the specified valve travel 5 Attach the stem connector key 18 clamping the piston rod key 17 to the valve stem Be sure to also attach the feedback arm and travel indicator Cycle the actuator to check availability of desired total travel and that the valve plug seats before the cylinder reaches the end of its stroke You can make minor travel adjustments if necessary by loosening the stem 685SE 685SR Piston Actuator Instruction Manual September 2014 D103799X012 connector slightly tightening the locknuts together and with the valve plug off the seat screwing the stem connector either into or out of the stem connector by means of a wrench on the locknuts
29. r head key 9 and clean the groove with a light degreaser 20 Lightly grease the new O ring key 2 and install on lower head key 9 21 Extract bearing assembly keys 12 13 14 and 15 from outer spring cartridge key 23 by removing the bearing retaining ring key 16 22 Remove the piston wiper seal key 15 O ring key 13 and quad seal key 12 from the bearing key 14 23 Clean bearing key 14 with a light degreaser if needed 24 Lightly grease the new O ring key 13 and quad seal key 12 then install onto bearing key 14 Without grease install a new piston wiper seal key 15 onto the bearing 25 Reinstall bearing assembly keys 12 13 14 and 15 into outer spring cartridge key 23 and secure in place with the bearing retaining ring key 16 26 Install cylinder onto lower head key 9 making sure the O ring key 2 does not move out of its groove 27 Carefully install piston assembly keys 5 6 7 17 and 19 into the cylinder key 4 using the lifting eye previously used for removal Ensure all seals and O rings stay in place on the outside diameter of the piston key 5 during installation 28 Install tie bolts key 3 into lower head key 9 29 Carefully install upper head key 1 onto cylinder key 4 using the lifting eyes previously used for removal Take care not to damage tie bolt key 3 threads and ensure that the O ring key 2 is in place during this step 30 Install lock washers key 10 and ti
30. re 3 Fisher 685SR Piston Actuator 1 X n DeC Bo 100 2 d E e 5 61 22 ORELI 3H O OOGG 6963 685SE 685SR Piston Actuator Instruction Manual September 2014 D103799X012 Figure 4 Fisher 685SE Piston Actuator with Manual Handwheel 0 LIFTING POINTS 1 100 Li KS 4 AS 3 9 100 m LD Wi RN RE FR OW M HOO 09 N 5 9 N 2 N 19 N N ja 0 N N 5 ZZ Lu 4 MEM ELA Uj 25 A DA 7 7 7 ZZ 72 uU LEFT SIDE VIEW FRONT VIEW N KKN RIGHT SIDE VIEW S24861 Instruction Manual 685SE 685SR Piston Actuator D103799X012 September 2014 Figure 5 Fisher 685SR Piston Actuator with Manual Handwheel 100 1 6 OL m d 1 6 LZ S ESSA 9 9 N Ao 722 pu 4 2 2 BZ 5 100 9 100 14 E G 38 D 2969 yt 1 feat LEFT SIDE VIEW NN 72 MEN N LN x 1 ES NYLIL INKL 11 RIGHT SIDE VIEW 524862 685SE 685SR Piston Actuator Instruction Manual September 2014 D103799X012 Neither Emerson Emerson Process Management nor any of their affiliated entities assumes responsibility for the selection use or maintenance of a
31. ring mounting it can interfere with the actuator mounting possibly damage valve stem threads or bend the valve stem Be sure the valve stem is pushed down into the valve body away from the actuator while mounting To avoid damaging the valve plug seating surfaces do not rotate the valve plug while it is seated Also avoid damage to the valve plug stem by careful use of tools during travel adjustment For 685SE actuators only It may be necessary to apply a temporary loading pressure to the bottom cylinder pressure connection to move the piston rod away from the valve stem during installation If it is not possible to provide a temporary loading pressure exercise caution when lowering the actuator over the valve stem to prevent damage to the valve stem or piston rod A WARNING When moving the piston rod with loading pressure applied exercise caution to keep hands and tools out of the piston rod travel path If the loading pressure is accidentally disconnected personal injury and property damage is possible if something is caught between the piston rod and other control valve parts For 685SE Actuators Using the lifting points along the outside perimeter of the outer spring cartridge key 23 attach appropriate rigging gear to both lifting points For 685SR Actuators Thread two lifting eyes into the free ports on the upper head key 1 180 degrees apart Reference tables 4 and 5 for approximate weights of the actuator to select an a
32. t be taken during installation to protect the positioner and all connected equipment against over pressurization The control valve should be located where it will be accessible for servicing Room should be left above and below the control valve to permit removal of the actuator and valve plug Three Way Valve Applications Note In three way valve applications where the actuator fully strokes at a frequency of once per minute or faster and the stroking speed is rapid less than 0 5 seconds per stroke there is a possibility that the stem can fracture at the plug if the actuator cylinder pressure is greater than 5 5 bar 80 psig This can cause loss of control of process fluid and further damage to the actuator Consideration should be given to the use of high strength fatique resistant stem materials in these applications Instruction Manual 685SE 685SR Piston Actuator D103799X012 September 2014 Actuator Mounting The following procedure describes how to mount a 685SE or 685SR actuator on a push down to close valve so that the piston rod to valve plug stem connection allows full travel and proper shutoff Key numbers referenced in the following steps are shown in figures 2 3 4 and 5 CAUTION The 685SE actuator spring load will force the piston rod to extend out of the cylinder and it can come into contact with the valve stem during actuator mounting If the valve stem is allowed to remain in the up position towards the actuator du
33. the override engage pin into the stem connector until it stops Note Depending on construction the handwheel may have operation information stamped into the part Always refer to steps 3 and 4 for operation information specific to push down to close and push down to open valves 3 For a push down to close valve Rotate the handwheel key 45 clockwise to close the valve and counterclockwise to open the valve 4 Fora push down to open valve Rotate the handwheel key 45 counterclockwise to close the valve and clockwise to open the valve 5 To disengage the manual handwheel rotate the handwheel key 45 to relieve any load placed on the override engage pin key 38 turn the engage pin control knob key 33 counter clockwise until it stops Instruction Manual 685SE 685SR Piston Actuator D103799X012 September 2014 Table 7 Handwheel Specifications OUTPUT THRUST HANDWHEEL DIAMETER TURNSPER mm TURNS PER FORCE ACTUATOR SIZE AD INCH OF REQUIRED TRAVEL Maintenance WARNING Avoid personal injury from sudden release of process pressure Before performing any maintenance operations e Do notremove 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 th
34. ure Limits Standard 40 to 93 C 40 to 200 F Low Temperature 54 to 93 C 65 to 200 F 3 High Temperature 32 to 204 C 25 to 400 F 9 Pressure Connections See table 3 Yoke Boss and Valve Stem Diameter 90 5 mm 3 9 16 inch yoke boss with 19 1 mm 3 4 inch stem l 127 mm 5 inch yoke boss with 25 4 mm 1 inch stem l 127 mm 5 inch yoke boss with 31 8 mm 1 1 4 inch stem 127 mm 5H inch yoke boss Instruction Manual D103799X012 with 32 mm 1 1 4 inch stem 178 mm 7 inch yoke boss with 51 mm 2 inch stem Instrument Mounting Mounting kits are available for use with the FIELDVUE DVC6200 series digital valve controller Construction Materials PART MATERIAL ASTM A36 tee ASTM tee 254 to 559 mm 10 to 22 inch cylinder 1026 DOM steel with chrome plated bore Cylinder 610 to 711 mm 24 to 28 inch cylinder ASTM A516 Grade 70 steel with fluoropolymer coated bore Manual Override optional Size 10 to 26 Handwheel Size 28 Hydraulic Hand pump Weights See tables 4 and 5 Lifting Point Load Ratings See table 6 1 The pressure temperature limits in this instruction manual and any other applicable standard or code should not be exceeded 2 Contact your Emerson Process Management sales office for larger travels or cylinder diameters The Fisher 657 667 and 585C family of actuators can be used for smaller travels or cylinder diameters 3 Contact your Emerson Process Manageme
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