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Instruction Manual

D100306X012

657 Actuator (30/30i-70/70i and 87)

June 2018

5

4. Do not connect the actuator stem to the valve stem at this time. Whenever the actuator is installed on the valve, it

is recommended to perform the Bench Set Spring Adjustment procedure to verify that the actuator is still adjusted
correctly.

Figure 3. Actuator Mounting Components for Size 30/30i through 70/70i Actuators

VALVE STEM

YOKE LOCK NUT
YOKE BOSS
DIAMETER

BONNET

TYPICAL VALVE
(REFER TO VALVE
MANUAL)

W6199-1

MATCH
LINE FOR
ACTUATOR

NPT INTERNAL CONNECTION

DIAPHRAGM CASING

DIAPHRAGM AND STEM SHOWN
IN UP POSITION

DIAPHRAGM PLATE

ACTUATOR SPRING

ACTUATOR STEM

SPRING SEAT

SPRING ADJUSTOR

STEM CONNECTOR

YOKE

TRAVEL INDICATOR DISK

INDICATOR SCALE

X1177

LOWER DIAPHRAGM CASING

X1176

SIZE 30i THROUGH 70i

SIZE 30 THROUGH 70

INTEGRATED FIELDVUE™ DVC6200 AND

DVC2000 DIGITAL VALVE CONTROLLER

MOUNTING PAD

INTEGRATED
SIDE-MOUNTED
HANDWHEEL
MOUNTING
PADS (4)

Discussion of Bench Set

The bench set pressure values are used to adjust the initial compression of the actuator spring with the valve‐actuator
assembly “on the bench.” The correct initial compression is important for the proper functioning of the valve‐actuator
assembly when it is put into service and the proper actuator diaphragm operating pressure is applied.

The bench set values are established with the assumption that there is no packing friction. When attempting to adjust
the spring in the field, it is very difficult to ensure that there is no friction being applied by “loose” packing.

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Summary of Contents for FISHER 657

Page 1: ... or 12 23 Side Mounted Handwheel figure 13 or 17 26 Casing Mounted Adjustable Up Travel Stops figures 18 or 19 31 Casing Mounted Adjustable Down Travel Stops figure 20 32 Introduction Scope of Manual This instruction manual provides information on installation adjustment maintenance and parts ordering for the Fisher 657 actuator in sizes 30 30i through 70 70i and size 87 The 657 4 actuator in size...

Page 2: ... Normal operating diaphragm pressure must not exceed maximum diaphragm casing pressure and must not produce a force on the actuator stem greater than the maximum allowable out put thrust or the maximum allowable valve stem load Contact your Emerson sales office or Local Business Partner with questions concerning maximum allowable valve stem load 5 This maximum casing pressure is not to be used for...

Page 3: ...he following QR code for a video on mounting a DVC6200 Digital Valve Controller on a 657 actuator Click here or access the following QR code for a video on installing a side mounted handwheel on a 657 actuator Installation Key number locations are shown in figures 6 7 8 9 and 10 unless otherwise indicated Also refer to figure 3 for location of parts WARNING Always wear protective gloves clothing a...

Page 4: ...ring the adjustment procedures it will be necessary to provide a temporary loading pressure to the actuator diaphragm Mounting the Actuator on the Valve The 657 actuator spring loading pushes the actuator stem up towards the actuator diaphragm see figure 2 This spring action moves the stem away from the valve while installing the actuator CAUTION If the valve stem is allowed to remain in the up po...

Page 5: ...G ADJUSTOR STEM CONNECTOR YOKE TRAVEL INDICATOR DISK INDICATOR SCALE X1177 LOWER DIAPHRAGM CASING X1176 SIZE 30i THROUGH 70i SIZE 30 THROUGH 70 INTEGRATED FIELDVUE DVC6200 AND DVC2000 DIGITAL VALVE CONTROLLER MOUNTING PAD INTEGRATED SIDE MOUNTED HANDWHEEL MOUNTING PADS 4 Discussion of Bench Set The bench set pressure values are used to adjust the initial compression of the actuator spring with the...

Page 6: ...IT SHOULD EQUAL THE TRAVEL SPAN SHOWN ON THE NAMEPLATE 2 3 1 3 4 40A8715 B B2426 1 2 3 4 Spring Verification Ensure that the actuator stem is at the top of its travel as shown in figure 4 and not connected to the valve Note Some spring compression is required to move the diaphragm to the top of its travel The steps provided are the same for push down to close direct acting or push down to open rev...

Page 7: ... a visual reference to verify that stem rotation does not occur Remove the stem connector before rechecking the bench set 3 Be sure the spring adjuster is adjusted to meet the requirements of step 2 above 4 Apply the upper bench set pressure as indicated on the nameplate This pressure extends the actuator stem down towards the valve At the end of the actuator stem use a marker or a piece of tape t...

Page 8: ... location For all actuators except size 87 ensure that the travel indicator disk key 14 is located on top of the locknuts 2 Slowly increase the diaphragm pressure to the upper bench set pressure This should be the same pressure used in the Spring Verification steps and it is marked on the nameplate 3 Place the stem connector half with the threaded holes approximately half way between the actuator ...

Page 9: ...tor diaphragm casing Note Steps 2 and 4 require that you read and record the pressure shown on the pressure gauge 2 Increase the actuator diaphragm pressure and read the diaphragm pressure as the actuator reaches a travel position in the rated travel of the valve that does not contact a travel stop Make a reference mark on the travel indicator scale using tape or some other method at this point 3 ...

Page 10: ...sure reading 2 Slowly decrease pressure until movement of the valve stem is detected and note this pressure 3 The difference between these two pressures is deadband in psi 4 Calculate the percent of deadband by Deadband psi Deadband nn Bench Set Span psi NOTE DEADBAND IS CAUSED BY FRICTION Figure 5 Typical Valve Response to Deadband UPPER BENCH SET PRESSURE LOWER BENCH SET PRESSURE 9 3 0 CLOSING V...

Page 11: ...ure electric power or a control signal to the actuator Be sure the actuator cannot suddenly open or close the valve D 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 D Vent the power actuator loading pressure and relieve any actuator spring prec...

Page 12: ...ove the spring adjuster key 12 by unscrewing it from the yoke key 9 Table 2 Actuator Assembly Recommended Torque Values DESCRIPTION KEY NUMBER ACTUATOR SIZE THREAD SIZE INCH TORQUE N m Lbf ft Diaphragm plate to stem key 3 30 30i 3 8 24 41 30 34 34i and 40 40i 1 2 20 54 40 45 45i to 70 70i and 87 3 4 16 149 110 MO U bolt key 170 34 and 40 1 2 13 81 60 45 to 60 5 8 11 163 120 MO U bolt key 147 34 an...

Page 13: ... the proper load to prevent leakage but not crush the material Perform the following tightening sequence with a manual torque wrench for size 30 30i 70 70i and 87 actuators CAUTION Over tightening the diaphragm casing cap screws and nuts keys 22 and 23 can damage the diaphragm Do not exceed 27 NSm 20 lbfSft torque Note Do not use lubricant on these bolts and nuts Fasteners must be clean and dry 7 ...

Page 14: ... the travel stop locknut key 137 from the handwheel stem key 133 and turn the stem out of the bottom of the body key 142 A screwdriver slot is provided on the top of the stem for this purpose 7 Replace the O ring key 138 in the body key 142 8 For a handwheel assembly used on sizes 30 30i through 60 60i actuators complete the disassembly by driving out the groove pin key 140 figure 11 and sliding t...

Page 15: ...nd tighten the hex nuts key 23 in the following manner The first four hex nuts tightened should be diametrically opposed and 90 degrees apart Tighten these four hex nuts to 13 NSm 10 lbfSft 9 Tighten the remaining hex nuts in a clockwise criss cross pattern to 13 NSm 10 lbfSft 10 Repeat this procedure by tightening four hex nuts diametrically opposed and 90 degrees apart to a torque of 27 NSm 20 l...

Page 16: ...ew Also remove the bushing key 151 figure 13 or 14 on size 34 and 40 8 If required remove the two ball bearings key 152 one from the bearing retainer and the other from the handwheel body Assembly for Side Mounted Handwheel Sizes 34 60 and 34i 60i Click here or access the following QR code for a video on installing a side mounted handwheel on a 657 actuator 1 Pack the ball bearings key 152 with an...

Page 17: ...60 lbf ft and key 257 to 41 N m 30 lbf ft For the sizes 45i through 60i finish tightening the cap screws key 256 to 163 N m 120 lbf ft and key 257 to 41 N m 30 lbf ft 8 Position the levers key 146 as shown in figures 11 or 12 Insert the lever pivot pin key 153 and snap the retaining ring key 154 onto the lever pivot pin Side Mounted Handwheel for Sizes 70 and 87 Actuators A side mounted handwheel ...

Page 18: ...ide the handwheel onto the worm shaft key 45 Thread the stop nut key 54 onto the shaft 6 Pack the two needle bearings key 42 and coat the worm gear key 44 threads with anti seize lubricant key 244 Insert the key key 47 the bearings and the gear into the yoke key 9 as shown in figure 17 7 Slots are cut into the threads of the bearing retainer flange key 39 Thread the flange into the yoke key 9 so t...

Page 19: ...bfSft 19 Tighten the remaining hex nuts in a clockwise criss cross pattern to 27 NSm 20 lbfSft 20 After the last hex nut is tightened to 27 NSm 20 lbfSft all of the hex nuts should be tightened again to 27 NSm 20 lbfSft in a circular pattern around the bolt circle 21 Once completed no more tightening is recommended 22 Mount the actuator onto the valve following the procedures in the Installation s...

Page 20: ...stop cap key 187 and loosen the travel stop nut key 137 Rotate the travel stop stem key 133 counter clockwise until the travel stop assembly is no longer compressing the spring 3 Remove the upper diaphragm casing key 1 figures 6 7 8 9 or 10 as outlined in the Maintenance section 4 Remove the cap screws keys 141 and separate the travel stop assembly from the upper casing 5 Remove and inspect the O ...

Page 21: ...n now be removed Assembly for Casing Mounted Travel Stop 1 Reassemble the up or down travel stop in the reverse order of the disassembly steps being sure to apply lubricant as shown by the lubrication boxes key 241 in figures 6 7 8 9 10 18 19 or 20 as appropriate 2 Readjust the travel stop to obtain the appropriate restriction by following the adjustment procedures presented in the introductory po...

Page 22: ...wn to close 40A8779X0C2 Size 50 60 push down to open 40A8779X0D2 Size 34i push down to close GE71635X0A2 Size 34i push down to open GE71635X0B2 Size 40i push down to close GE71635X0C2 Size 40i push down to open GE71635X0D2 Size 45i 46i push down to close GE71636X0A2 Size 40i 60i push down to open GE71636X0B2 Size 50i 60i push down to close GE71636X0C2 Size 50i 60i push down to open GE71636X0D2 Tra...

Page 23: ...on 24 Twin Speed Nut 25 1 Washer 26 Stem Connector Assy 28 Screw 29 Yoke Extension 30 Indicator Adaptor 31 Machine Screw 32 Washer 33 Pipe Bushing 61 Nameplate 73 Cap Screw 238 Warning label 241 Lubricant Lithium Grease not furnished with the actuator 249 Caution nameplate Top Mounted Handwheel figure 11 or 12 51 Handwheel 54 Stop Nut 133 Handwheel Stem 134 Washer 135 Pusher Plate 137 Casing Mount...

Page 24: ... Figure 6 Fisher 657 Actuator Sizes 30 through 60 APPLY LUB 40A8765 C NOTE KEY 25 IS NOT PART OF SIZE 40 CONSTRUCTIONS 1 1 Figure 7 Fisher 657 Actuator Sizes 30i through 60i APPLY LUB GE71419 A PARTS NOT SHOWN KEY 7 24 AND 249 NOTE KEY 25 IS NOT PART OF SIZE 40 CONSTRUCTIONS 1 1 ...

Page 25: ...Manual D100306X012 657 Actuator 30 30i 70 70i and 87 June 2018 25 Figure 8 Fisher 657 Size 70 Actuator APPLY LUB 50A8768 C Figure 9 Fisher 657 Size 70i Actuator APPLY LUB GE71634 A PARTS NOT SHOWN KEY 7 24 AND 249 ...

Page 26: ...pring 59 Handwheel Indicator 60 Cover Band Ass y 61 Grease Fitting 132 Operating Nut 136 Bearing Retainer 142 Handwheel Body Key Description 143 U Bolt 144 Hex Nut 145 Handwheel Screw 146 Lever Pin Ass y 147 Hex Jam Nut 148 Dowel Pin 149 Washer 150 Lockwasher 151 Bushing 152 Ball Bearing 153 Lever Pivot Pin 154 Retaining Ring 155 Lever Spacer 156 Screw 157 Lockwasher 158 Hex Nut 159 Pointer Mounti...

Page 27: ...ugh 60 60i Actuators APPLY LUB SEALANT NOTES THE TOP MOUNTED HANDWHEEL IS NOT DESIGNED FOR USE UNDER HEAVY LOAD OR FOR FREQUENT USE 28A1205 D Figure 12 Top Mounted Handwheel Assembly for Sizes 70 70i through 87 Actuators APPLY LUB SEALANT NOTES THE TOP MOUNTED HANDWHEEL IS NOT DESIGNED FOR USE UNDER HEAVY LOAD OR FOR FREQUENT USE CV8010 G ...

Page 28: ...i and 87 June 2018 28 Figure 13 Side Mounted Handwheel Assembly for Size 34 and 40 Actuators APPLY LUBRICANT 30A8778 D Figure 14 Side Mounted Handwheel Assembly for Size 34i and 40i Actuators APPLY LUBRICANT GE71635 A PARTS NOT SHOWN KEY 157 158 159 AND 168 ...

Page 29: ... 87 June 2018 29 Figure 15 Side Mounted Handwheel Assembly for Size 45 46 50 and 60 Actuators APPLY LUBRICANT 40A8779 D Figure 16 Side Mounted Handwheel Assembly for Size 45i 46i 50i and 60i Actuators APPLY LUBRICANT GE71636 A PARTS NOT SHOWN KEY 158 159 AND 168 ...

Page 30: ...Instruction Manual D100306X012 657 Actuator 30 30i 70 70i and 87 June 2018 30 Figure 17 Fisher 657 Size 70 and 87 Actuators with Side Mounted Handwheel APPLY LUB 50A8769 D SECTION A A ...

Page 31: ...avel Stop Stem 135 Pusher Plate 137 Travel Stop Nut 138 O Ring 139 O Ring Figure 19 Casing Mounted Adjustable Up Travel Stop for Sizes 70 70i and 87 Actuators Style 1 APPLY LUB SEALANT CV8057 E Key Description 140 Groove Pin 141 Cap Screw 142 Body 169 Grease Fitting 174 Retaining Screw 175 Thrust Bearing 176 Thrust Bearing Race 187 Travel Stop Cap 241 Lubricant Lithium Grease not furnished with tr...

Page 32: ...erned 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 E 1983 2018 Fisher Controls International LLC All rights reserved Fisher easy e and FIELDVUE are marks owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co Emerson Aut...

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