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Instruction Manual
Form 1292
July 2007
655 and 655R Actuators
Type 655 and 655R Actuators
for Self-Operated Control
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Act
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators Table 1. Specifications Actuator Sizes and Maximum Casing Pressures All Other Sizes: 19 mm (0.75 inch) plus 3 mm (0.125 inch) for seating MAXIMUM CASING PRESSURE ACTUATOR ACTUATOR Effective Diaphragm Area SIZE Bar Psig See table 3 3A, 4A 17.2 250 3B, 4B 12.1 175 Spring Rate 32, 42 6.9 100 See key 6 in the parts list section 33, 43 4.5 65 34, 44 3.1 45 Temperature Capabilities 35, 45 2.1 30 36, 46 1.0 15 –29 to 82C (–20 to 180F) with
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators plate (key 4) against the upper diaphragm casing CAUTION (key 1). 2. Perform the following steps as appropriate for To avoid premature wear of the either push-down-to-close or push-down-to-open diaphragm due to debris in the valve action. pressure line to the diaphragm, install a strainer in the pipeline ahead of the regulator or relief valve. CAUTION Before installing the actuator, inspect it for any In the following procedures, do
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators (1) Table 2. Actuator Pressure-Setting Ranges PRESSURE PRESSURE PRESSURE PRESSURE ACTUA- ACTUA- REDUCTION RELIEF REDUCTION RELIEF SPRING SPRING PART PART SPRING PART SPRING PART TOR TOR TOR TOR Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum NUMBER NUMBER NUMBER NUMBER SIZE SIZE SIZE SIZE Bar Psig Bar Psig Bar Psig Bar Psig Bar Psig Bar Psig Bar Psig Bar Psig 1E792427082 5.4 78 12.0 174 4.5 65 10.1 146 1E793327082 0.9
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators (1) Table 3. Effective Diaphragm Area TRAVEL DOWN FROM UPPER CASING STOP, mm (IN.) ACTUA ACTUA- - TOR TOR 0 3 (0.125) 5 (0.1875) 6 (0.25) 10 (0.375) 11 (0.4375) 13 (0.5) 14 (0.5625) 19 (0.75) 22 (0.875) SIZE 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Cm In. Cm In. Cm In. Cm In. Cm In. Cm In. Cm In. Cm In. Cm In. Cm In. 3A, 4A 66 10.2 62 9.6 61 9.5 61 9.4 59 9.2 59 9.1 57 8.9 56 8.7 - - - - - - - - - - - - 3B, 4B 152 23.5 139 21.6 136 21.
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators f. Stroke the actuator, and measure the stem Note movement to check travel. If the movement is Changing the spring adjustment will more than full travel, turn the valve stem out of not change the actuator pressure the actuator stem the amount of over-travel. If range for that particular spring (see movement is less than full travel, turn the valve table 2). Changing the spring stem into the actuator stem the amount of adjustment mere
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators 4. Slowly open the upstream shutoff valve. Shutdown For both pressure-reducing and pressure-relief applications, refer to figure 2, and follow the Startup For Pressure-Relief Service procedures described below. 1. Open the needle valve in the control line. 1. Close the upstream shutoff valve slightly. 2. Open the downstream shutoff valve. 2. Slowly open the bypass valve while monitoring 3. Slowly open the upstream shutoff valve.
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators pressurized, even when the valve has following procedure, make sure the been removed from the pipeline. adjusting screw (key 10) remains Process fluids may spray out under screwed into the yoke (key 7). pressure when removing the packing a. Loosen the two hex nuts (key 12). hardware or packing rings, or when loosening the packing box pipe plug. b. Loosen the yoke locknut (figure 3) with a Check with your process or safety hammer a
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators diaphragm casing (key 5). Some Type 655R Note actuators will have travel stops (key 13, not shown) When you replace actuator in place of three of these six cap screws. diaphragms in the field, take care to 9. If a top-mounted handwheel assembly is used, ensure the diaphragm casing bolts are refer to steps 4 through 8 of the Disassembly portion tightened to the proper load to prevent of the Top-Mounted Handwheel section. leakage, but
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators 16. To start up and adjust the actuator, follow the 5. Turn the handwheel clockwise two or three turns. procedures outlined in the Startup section of this Remove the hex nut (key 22, figures 5 and 6; instruction manual. key 54, figure 7) and washer (key 24, figures 5 and 6; key 134, figure 7), and lift off the handwheel. Top-Mounted Handwheel 6. Unscrew the locknut (key 27, figures 5 and 6; key 137, figure 7) from the handwheel
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators tightened to the proper load to prevent ensure the diaphragm casing bolts are leakage, but not crush the material. tightened to the proper load to prevent Perform the following tightening leakage, but not crush the material. sequence with a manual torque Perform the following tightening wrench. sequence with a manual torque wrench. CAUTION CAUTION Over-tightening the diaphragm cap screws (key 19) can damage the Over-tightening the dia
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators Parts Ordering Parts List When corresponding with your Emerson Process Note Management sales office about this equipment, refer to the serial number found on the actuator Part numbers are shown for recommended spares nameplate (key 17, figure 4). Also, specify the only. For part numbers not shown, contact your complete 11-character part number from the Emerson Process Management sales office. following parts list when ordering replace
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators APPLY LUB PART NOT SHOWN : 31 28A1216-C/DOC Figure 5. Size 3A and 4A Top-Mounted Handwheel Assembly Key Description Part Number 30A8341-A/DOC 18 Drive Screw 19 Cap Screw A APPLY MOLY-GREASE LUBRICANT TO ADJUSTING SCREW 20 Hex Nut 21 Cap Screw Top-Mounted Handwheel Sizes 3A, 4A, 3B & 4B 22 Hex Jam Nut 24 Washer 25 Handwheel 26 Handwheel Stem 27 Hex Jam Nut 28 Handwheel Body 29* O-Ring, nitrile 1D237506992 30* O-Ring, nitrile (not s
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators BV8008-E/DOC Figure 7. Size 32 through 46 Top-Mounted Handwheel Assembly. APPLY LUB PARTS NOT SHOWN : 30 & 31 38A1217-B/DOC Figure 6. Size 3B and 4B Top-Mounted Handwheel Assembly Key 6 Spring, steel SPRING RATE SAFE LOAD COLOR CODE COLOR CODE N/mm Lb/in. N Lb Aluminum & red 22 123 1290 290 Aluminum & dark green 43 246 2420 545 Dark green 64 368 3750 843 Aluminum 86 490 4720 1060 Dark blue 107 612 5200 1187 Aluminum & dark blue 1
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators 15
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Instruction Manual Form 1292 July 2007 655 and 655R Actuators Fisher is a mark owned by Fisher Controls International LLC, a member of the Emerson Process Management business division 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 ma
