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Fisher

r

 667 Diaphragm Actuators 

Size 80 and 100

Contents

Introduction

1

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Scope of Manual

1

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Description

2

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Specifications

2

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Maximum Pressure Limitations

3

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Installation

4

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Actuator Mounting

4

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Loading Connection

5

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Adjustments

5

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Size 80 Actuator Spring

6

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Travel

5

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Spring

6

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Size 100 Actuator Spring

6

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Maintenance

7

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Size 80 Actuator Maintenance

8

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Size 100 Actuator Maintenance

12

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For Actuators without the 

Top‐Loaded Option

15

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For Actuators with the 

Top‐Loaded Option

17

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Size 80 Side‐Mounted Handwheel

20

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Size 80 Hydraulic Snubber

21

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Size 100 Top‐Mounted Handwheel

(Adjustable Down Travel Stop)

21

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Parts Ordering

22

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Parts Kits

23

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Parts List

23

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Figure 1. Size 80 Fisher 667 Actuator

W1950

Introduction

Scope of Manual

This instruction manual provides information on installation, adjustment, maintenance, and parts ordering for the
Fisher 667 actuator in sizes 80 and 100 (figure 1). Refer to separate instruction manuals for information about other
equipment and accessories used with these actuators.

Instruction Manual

D100311X012

667 Size 80 and 100 Actuators

May 2011

Summary of Contents for Fisher 667

Page 1: ...For Actuators with the Top Loaded Option 17 Size 80 Side Mounted Handwheel 20 Size 80 Hydraulic Snubber 21 Size 100 Top Mounted Handwheel Adjustable Down Travel Stop 21 Parts Ordering 22 Parts Kits 23 Parts List 23 Figure 1 Size 80 Fisher 667 Actuator W1950 Introduction Scope of Manual This instruction manual provides information on installation adjustment maintenance and parts ordering for the Fi...

Page 2: ...actuator is a reverse acting actuator Reverse acting actuators use air action to lift the diaphragm away from the valve and spring action opposes the diaphragm action see figure 2 The actuator position changes in response to varying controlled air pressure to the diaphragm If air pressure is reduced or lost from the actuator diaphragm spring action will extend the actuator stem The actuator is oft...

Page 3: ...ntrolled movement of parts damage to actuator parts and the control valve and loss of control of the process Use pressure limiting or pressure relieving devices to prevent casing pressure from exceeding these limits The casing and diaphragm of 667 actuators are pressure operated This air pressure provides force to compress the spring and stroke the actuator The following explanations describe the ...

Page 4: ...n performing any installation operations to avoid personal injury 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 When an actuator and valve are shipped together the actuator is normall...

Page 5: ...e size 80 spring case adaptor key 89 or in the size 100 lower diaphragm casing key 67 For top loaded actuators 1 For size 80 remove the the pipe bushing key 78 and connect the loading pressure piping in its place For size 100 remove the hex bushing key 62 from the upper casing key 1 and connect the top loading pressure piping in its place 2 Remove the 1 4 inch bushing key 92 figure 6 key 62 figure...

Page 6: ...ve contains no pressure and the packing is loosely inserted in the bonnet Refer to the Maximum Allowable Supply pressure on the nameplate when the valve is controlling the specified pressure drop and the packing is tightened to stop leaks around the stem Monitor loading pressure carefully when making adjustments Do not exceed the pressure specifications of either the loading regulator or the actua...

Page 7: ...orter than either dimension B plus the amount of adjustment required or dimension B plus valve travel whichever is less 3 Whenever the total amount of adjustment required is greater than valve travel the adjustment must be made in two or more steps and the amount of adjustment taken in each step must be less than valve travel 4 Pressure the actuator to attain full travel Cautiously insert the spac...

Page 8: ...ure that the above measures stay in effect while you work on the equipment D 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 D Check with your process or safety engineer for any addit...

Page 9: ...andard and top loaded constructions use the same key numbers for parts The parts look different but they use the same assembly and disassembly sequence See figure 4 Size 80 Actuator Construction for location of parts 8 Unscrew the cap screws key 30 and remove the lower diaphragm casing key 64 9 For actuators without a snubber a Unscrew the spring case adaptor cap screws and nuts keys 90 and 91 and...

Page 10: ...16 Refer to the size 80 actuator assembly procedures Carefully clean and inspect all parts and obtain any replacement parts required for reassembly Assembly See figure 4 Size 80 Actuator Construction for location of parts 1 Coat the threads of the stem key 144 with lithium grease lubricant key 237 Install the spring adjustor key 74 and thrust bearing Pack the bearing key 86 with lithium grease lub...

Page 11: ...0A8597 D 50A8599 C C0772 IL 7 For actuators without a snubber install the seal bushing key 7 into the spring case adaptor key 89 followed by the snap ring key 72 Replace the seal bushing O rings keys 8 and 9 as required 8 Coat the gasket key 70 with lithium grease lubricant key 237 Position the lower diaphragm casing key 64 on the spring case adaptor and secure with cap screws key 30 9 Mount the l...

Page 12: ...nuts diametrically opposed and 90 degrees apart to the final torque value that is specified in table 3 for the diaphragm material being used 14 Tighten the remaining hex nuts in a clockwise crisscross pattern to the final torque value that is specified in table 3 for the diaphragm material being used 15 After the last hex nut is tightened complete another tightening sequence Tighten in a circular ...

Page 13: ...e lock out procedures to be sure that the above measures stay in effect while you work on the equipment 2 Remove the shroud plate key 65 by removing the cap head screws key 66 a For small spring force loosen the jam nut key 26 and rotate the adjusting nut key 25 until spring compression is relieved b For high spring force Note To relieve spring compression when high spring forces exist refer to th...

Page 14: ...EW KEY 12 HEX NUT KEY 24 HEX NUT KEY 241 WASHER KEY 37 O RING KEY 240 SEAL BUSHING RETAINER KEY 10 O RING KEY 9 SEAL BUSHING KEY 7 O RING KEY 8 TRAVEL STOP KEY 12 HEX NUT KEY 24 HEX NUT KEY 241 WASHER KEY 37 BACK UP PLATE KEY 6 DIAPHRAGM PLATE KEY 4 O RING KEY 240 BACK UP PLATE KEY 6 UPPER DIAPHRAGM CASING KEY 1 DIAPHRAGM RETAINER KEY 5 CAP SCREW KEY 13 DIAPHRAGM KEY 3 CASE ADAPTOR KEY 245 CAP SCR...

Page 15: ...e sure to disconnect the stem connector key 31 before removing the stem 8 Refer to the following Assembly procedures Carefully clean and inspect all parts or obtain replacement parts required for reassembly Assembly 1 If the actuator stem key 144 figure 7 was removed lubricate the threads on the stem with lithium grease lubricant key 237 2 On the actuator stem assemble the hex nuts thrust bearing ...

Page 16: ...l stop key 12 9 Position the upper diaphragm casing key 1 on the diaphragm key 3 and align the holes Note When you replace actuator diaphragms in the field take care to ensure the diaphragm casing cap screws 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 80 and 100 actuators CAUTION Do no...

Page 17: ...ings keys 8 and 9 as necessary WARNING To avoid personal injury due to the sudden uncontrolled movement of parts do not loosen the four hex nuts on the lower diaphragm casing when spring pressure is applied Ensure that all spring precompression has been released 6 Unscrew the four hex nuts that secure the lower diaphragm casing to the yoke assembly key 67 and remove the lower diaphragm casing Repl...

Page 18: ...ng and be careful that the diaphragm fold does not get pinched when the diaphragm adaptor key 245 figure 5 is installed CAUTION If the diaphragm key 3 is installed so air pressure is applied to the fabric side it will immediately delaminate the sealing surface smooth surface from the fabric The delamination can cause immediate failure of the diaphragm s ability to retain pressure 6 Install the dia...

Page 19: ...o the actuator stem connector key 42 before tightening the hex nut key 28 16 For actuators without the handwheel Install the travel stop cap screw key 12 and tighten the screw 17 Position the upper diaphragm casing key 1 on the diaphragm key 3 and align the holes Note When you replace actuator diaphragms in the field take care to ensure the diaphragm casing cap screws are tightened to the proper l...

Page 20: ...ining flange key 134 Do not lose the key key 122 3 Unscrew two screws key 79 and remove the travel stop indicator key 126 4 Turn the handwheel key 58 to raise the lower sleeve Continue turning the handwheel until the lower sleeve is free of the worm gear key 44 Lift out the lower sleeve bearing and gear retainer thrust bearing and worm gear keys 123 45 43 and 44 5 The worm shaft key 51 and associa...

Page 21: ...sting screws key 104 figure 8 counterclockwise out of the reservoir key 99 figure 8 to increase damping action and clockwise to decrease damping action The adjusting screw on the right the top one of the two adjusting screws in section B B of figure 8 regulates downward damping action and the screw on the left regulates upward damping action Size 100 Top Mounted Handwheel Adjustable Down Travel St...

Page 22: ...and install the retaining ring key 60 6 Pack the two thrust bearings key 43 with lithium grease lubricant Install one thrust bearing then the worm gear key 44 followed by the second thrust bearing and the bearing and gear retainer key 45 7 Coat the power screw threads key 46 with lithium grease lubricant Slide the power screw into the thrust bearing key 43 turn the handwheel and feed the sleeve th...

Page 23: ...Plate 20 Spring Guide 21 Cap Screw 22 Washer 24 Hex Nut 25 Hex Nut 26 Hex Nut 30 Cap Screw 31 Stem Connector Assembly 32 Travel Scale 33 Machine Screw 34 Travel Indicator 35 Cap Screw 37 Washer 39 Nameplate 40 Drive Screw 60 Retaining Ring 62 Hex Bushing 63 Lifting Pin 64 Lower Diaphragm Casing 65 Shroud Plate 66 Cap Screw 67 Lower Diaphragm Casing yoke tie rod assembly 69 Hex Jam Nut 70 Gasket co...

Page 24: ...cription Part Number 29 Hand Grip 38 Hand Grip Bolt 41 Gear Case 43 Thrust Bearing 44 Worm Gear 45 Bearing Gear Retainer 48 Back Worm Retainer 49 Front Worm Retainer 50 Ball Bearing 51 Worm Shaft 57 Grease Fitting 58 Handwheel 121 Set Screw 122 Key 123 Lower Sleeve 124 Machine Screw 126 Travel Stop Indicator 127 Handwheel Cap 134 Retaining Flange 135 Travel Stop Nut 136 Cap Screw 137 Set Screw 138...

Page 25: ...equired 1C710321992 98 Pipe Plug 99 Reservoir 100 O Ring nitrile 1H624706992 101 Cap Screw 102 Pipe Plug 103 O Ring nitrile 2 required 1D687506992 Key Description Part Number 104 Adjusting Screw 105 Hex Nut 106 Cap Screw 107 O Ring nitrile 1H972406992 108 Hydraulic fluid 2 gal 7 6L 109 O Ring nitrile 2 required 1E591406992 110 Orifice 111 Bypass Check Valve Plug 112 Spring 113 E Ring 114 Bushing 1...

Page 26: ...2 667 Size 80 and 100 Actuators May 2011 26 Figure 7 Size 100 Fisher 667 Actuator NOTES THIS PART IS LOCATED 90_ TO FRONT OF POSITION SHOWN 2 KEYS 243 AND 244 ARE NOT SHOWN 1 APPLY LUB 50A2623 F 56A9820 B TOP LOADED ACTUATOR DETAIL ...

Page 27: ...ion Manual D100311X012 667 Size 80 and 100 Actuators May 2011 27 Figure 8 Size 80 Fisher 667 Actuator with Side Mounted Handwheel and Hydraulic Snubber VIEW A SECTION B B B B VIEW A APPLY LUB SEALANT 50A8759 C ...

Page 28: ...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 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 ...

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