Installation Instructions

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Fisherr 657 Diaphragm Actuator

Sizes 30-70 and 87

Contents

Introduction 1.................................

Scope of Manual 1.............................

Description 2.................................

Specifications 2...............................

Educational Services 3.........................

Installation 3..................................

Mounting the Actuator on the Valve 4............

Discussion of Bench Set 5.......................

Spring Verification 6...........................

Installing the Stem Connector Assembly 7.........

Friction Discussion 8...........................

Deadband Measurement 9......................

Loading Connection 10.........................

Maintenance 11................................

Actuator Maintenance 1 1.......................

Top-Mounted Handwheel Assembly 13...........

Side-Mounted Handwheel for Sizes 34

through 60 Actuators 15.....................

Side-Mounted Handwheel for Sizes 70

and 87 Actuators 16.........................

Casing-Mounted Adjustable Travel Stops 18.......

Parts Ordering 20...............................

Parts Kits 20...................................

Kits for Side-Mounted Handwheels 20............

Kits for Top-Mounted Handwheels 20.............

Parts List 21...................................

Actuator Assembly (figures 6, 7, or 8) 21..........

Figure 1. Fisher 657 or 657-4 Actuator Mounted

on an easy-e™ Valve

W2174-2

Top-Mounted Handwheel (figures 9 or 10) 21......

Side-Mounted Handwheel (figure 11 or 13) 24.....

Casing-Mounted Adjustable Up Travel Stops

(figures 14 or 15) 29.........................

Casing-Mounted Adjustable Down Travel Stops

(figure 16) 30..............................

Introduction

Scope of Manual

This instruction manual provides information on installation, adjustment, maintenance, and parts ordering for the

Fisher657actuatorinsizes30through70andsize87.The657-4 actuator in sizes 70 and 87 is also covered. Refer to

separate instruction manuals for information about the valve positioner and other accessories used with these

actuators.

Do not install, operate, or maintain a 657 actuator 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 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.

Instruction Manual

D100306X012

657 Actuator (30-70 and 87)

November 2013

Summary of content (32 pages)

PAGE 1
Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Fisherr 657 Diaphragm Actuator Sizes 30-70 and 87 Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Educational Services . . . . . . . . . . . . . . . . . . . .
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Table 1.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Figure 2. Schematic of Fisher 657 and 657-4 Actuators AIR PUSHES STEM DOWN SPRING LIFTS STEM UP STEM AF3833-A A0792-2 Educational Services For information on available courses for Fisher 657 diaphragm actuators, as well as a variety of other products, contact: Emerson Process Management Educational Services, Registration P.O. Box 190; 301 S. 1st Ave.
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657 Actuator (30-70 and 87) November 2013 Instruction Manual D100306X012 allowable valve stem load. (Contact your Emerson Process Management sales office with questions concerning maximum allowable valve stem load.) D Valve/Actuator Assembly: If the actuator and valve are shipped together as a control valve assembly, it has been adjusted at the factory, and may be installed in the pipeline. After installing the valve in the pipeline, refer to the Loading Connection procedures.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Figure 3.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Figure 4. Bench Set Adjustment SPRING ADJUSTER RATED VALVE TRAVEL MEASURE LOWER BENCH SET LOADING PRESSURE 1 UPPER BENCH SET PRESSURE MARK 3 VALVE STEM ACTUATOR STEM 4 MARK VALVE 3 STEM HERE 2 UPPER BENCH SET LOADING PRESSURE NOTES: THE LOWER PSIG LOADING PRESSURE (MARKED ON NAMEPLATE) WHERE THE FIRST MOVEMENT OF 1 ACTUATOR STEM IS DETECTED. 2 THE UPPER PSIG LOADING PRESSURE EXTENDS ACTUATOR STEM.
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Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 1. If not already accomplished, provide a temporary means of applying an adjustable loading pressure to the actuator during bench set adjustments. 2. Set the diaphragm loading pressure at 0 bar (0 psig). Then, slowly raise the pressure towards the lower bench set pressure, as indicated on the nameplate, while checking for the first linear movement of the actuator stem.
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657 Actuator (30-70 and 87) Instruction Manual November 2013 D100306X012 Note Replacement stem connectors are an assembly of two stem connector halves, cap screws, and a spacer between the connector halves. Remove the spacer and discard, if present, before clamping the actuator and valve stems together. Use only a mated pair of stem connector halves. 1. If necessary, push the valve stem down so that it is touching the seat ring on direct acting valves.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 (a) plus the friction force divided by the effective diaphragm area with increasing diaphragm pressure or (b) minus the friction force divided by the effective diaphragm area with decreasing diaphragm pressure. If the stem connector assembly has been installed, the valve friction may be determined by the following procedure: 1.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 deadband being too wide are no movement, a “jump” movement, or oscillating movements of the actuator during automatic loop control. The following steps are provided to determine the span of deadband. The percent of deadband is helpful in troubleshooting problems with the process control loop. 1. Start at a pressure near the lower bench set pressure, slowly increase pressure until the valve is approximately at mid-travel.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Maintenance Actuator parts are subject to normal wear and must be inspected and replaced when necessary. The frequency of inspection and replacement depends on the severity of service conditions. WARNING Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing any maintenance operations: D Do not remove the actuator from the valve while the valve is still pressurized.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 4. Remove the diaphragm casing cap screws and nuts (keys 22 and 23), then lift off the upper diaphragm casing (key 1). 5. Remove the actuator diaphragm (key 2). 6. Remove the diaphragm plate, actuator stem, and cap screw (keys 4, 10 and 3) as an assembly. This assembly can be broken down further, if required, by removing the cap screw (key 3). 7. Remove the actuator spring (key 6) and the spring seat (key 11). 8.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 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. Insert the cap screws (key 22), and tighten the hex nuts (key 23) in the following manner. The first four hex nuts tightened should be diametrically opposed and 90 degrees apart.
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657 Actuator (30-70 and 87) November 2013 Instruction Manual D100306X012 5. Loosen the travel stop locknut (key 137), and turn the handwheel (key 51) counter-clockwise. Remove the cotter pin and stop nut (keys 247 and 54), then lift off the handwheel. 6. Unscrew 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.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 8. Insert the cap screws (key 22), and 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.
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657 Actuator (30-70 and 87) Instruction Manual November 2013 D100306X012 4. Coat the groove in the handwheel body (key 142) with lithium grease (key 241). Insert the spring (key 56) and ball (key 55) into the handwheel (key 51). Holding the ball and spring in the handwheel, put the handwheel, the washer (key 149), the lockwasher (key 150), and the stop nut (key 54) onto the end of the handwheel screw (key 145). Tighten the stop nut. 5.
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Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 8. Turn the handwheel to raise the lower sleeve (key 46) until it is free of the worm gear (key 44). Lift out the lower sleeve and the key (key 47). DO NOT move the neutral indicator scale (key 59). 9. Loosen two set screws (key 40), then unscrew the bearing retainer flange (key 39) and the attached spring adjuster (key 12), using a suitable tool in the open neck of the flange.
PAGE 18
657 Actuator (30-70 and 87) Instruction Manual November 2013 D100306X012 15. Position the upper diaphragm casing (key 1) onto the diaphragm (key 2) and align the holes. 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. Perform the following tightening sequence with a manual torque wrench for size 30-70 and 87 actuators.
PAGE 19
Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 The adjustable down travel stop (figure 16) limits the actuator stroke in the downward direction. To adjust, first relieve actuator loading pressure before removing the travel stop cap (key 187). Then loosen the jam nut and adjust the stop nut (keys 189 and 54) either down on the stem to limit travel, or up on the stem to allow more travel. Lock the jam nut against the stop nut, then replace the closing cap.
PAGE 20
Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Parts Ordering Each actuator has a serial number stamped on the nameplate. Always mention this number when corresponding with your Emerson Process Management sales office regarding technical information or replacement parts. Also, reference the complete 11-character part number of each needed part as found in the following Parts List. WARNING Use only genuine Fisher replacement parts.
PAGE 21
Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Parts List Key Description 26 Stem Connector Assy, Steel Zn Pl Sizes 30 & 34 18A1243X012 Size 34 with side mtd handwheel 1F659225142 Size 40 18A1668X012 Size 40 with side mtd handwheel 1F659125142 Sizes 45 & 46 18A1671X012 Sizes 45 & 46 w/ side mtd handwheel (SST,Stl) 2F1678000A2 Sizes 50 & 60 18A1672X012 Sizes 50 & 60 w/ side mtd handwheel (SST,Stl) 2F1672000A2 Size 70 18A1685X012 with side mtd handwheel 18A1678X012 with PMV p
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657 Actuator (30-70 and 87) Figure 6.
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Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 Figure 7.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Figure 8.
PAGE 25
Instruction Manual 657 Actuator (30-70 and 87) D100306X012 Figure 9. Top-Mounted Handwheel Assembly for Size 30 through 60 Actuators November 2013 Figure 10. Top-Mounted Handwheel Assembly for Sizes 70 through 87 Actuators APPLY LUB/SEALANT NOTES: THE TOP MOUNTED HANDWHEEL IS NOT DESIGNED FOR USE UN DER HEAVY LOAD OR FOR FREQUENT USE. 28A1205-D APPLY LUB/SEALANT NOTES: THE TOP MOUNTED HANDWHEEL IS NOT DESIGNED FOR USE UNDER HEAVY LOAD OR FOR FREQUENT USE.
PAGE 26
657 Actuator (30-70 and 87) November 2013 Figure 11.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Figure 12.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Figure 13.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Figure 14. Casing-Mounted Adjustable Up Travel Stop for Sizes 30 through 60 Actuators (Style 1) Figure 15.
PAGE 30
Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Figure 16.
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Instruction Manual 657 Actuator (30-70 and 87) D100306X012 November 2013 Key 6 Actuator Spring ACTUATOR SIZE DIAPHRAGM PRESSURE RANGE Bar Psig TRAVEL, mm (INCHES) 11 (0.4375) 16 (0.625) 19 (0.75) 29 (1.125) 38 (1.5) 51 (2) 1E795520792 Brown (885) 1E792327092 Dark Gray (735) ----- ----- ----- 0.2-1.0 3-15 1E795327082 Light Blue (1260) 0.4-2.0 6-30 1E795627082 White (2520) 1E795427082 Light Gray (1770) 1E79247082 Light Green (1470) ----- ----- ----- 0.2-1.
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657 Actuator (30-70 and 87) November 2013 Instruction Manual D100306X012 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 easy-e are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co.