Gebruiksaanwijzing /service van het product 657 van de fabrikant Emerson Process Management
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www.Fisher.com D100306X012 Type 6 57 D iaphragm A ctuator S i z e s 3 0 - 7 0 a n d 8 7 Contents Introduction 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scope of Manual 1 . . . . . . . . . . . . . . . . . . . . . . . . . Description 2 .
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 2 Table 1. Specifications SPECIFICATION (1) ACTUATOR SIZE SPECIFICATION (1) 30 34 40 45 46 50 60 70 (1) 87 (1) Nominal Effective .
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 3 Figure 2. Schematic of Type 657 and 657-4 Actuators SPRING LIFTS STEM UP AIR PUSHES STEM DOWN STEM AF3833-A A0792-2/IL Installation Key number locations are shown in figures 6, 7, and 8, unless otherwise indicated.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 4 Figure 4. Bench Set Adjustment SPRING ADJUSTER LOWER BENCH SET LOADING PRESSURE UPPER BENCH SET PRESSURE MARK VALVE STEM RATED .
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 5 valve because the disk will not go through the actuator yoke opening). 4. Do not connect the actuator stem to the valve stem at this time.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 6 nameplate. Apply loading pressure to the diaphragm. CAUTION Stroke the actuator a few times to ensure that the pressure gauge is working correctly, and that the actuator is functioning properly.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 7 Figure 5. Typical Valve Response to Deadband UPPER BENCH SET PRESSURE LOWER BENCH SET PRESSURE 9 3 0 CLOSING VALVE 15 1.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 8 4. Calculate the percent of deadband by: Deadband, psi Deadband = —————————————— = nn% Bench Set Span, psi Loading Connection The loading pressure connections are made at the factory if the valve, actuator, and positioner come as a unit.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 9 Actuator Disassembly 1. Bypass the control valve. Reduce the loading pressure to atmospheric, and remove the tubing or piping from the upper diaphragm casing (key 1).
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 10 8. Tighten the remaining hex nuts in a clockwise, criss-cross pattern to 13 N S m (10 lbf S ft). 9. Repeat this procedure by tightening four hex nuts, diametrically opposed and 90 degrees apart, to a torque of 27 N S m (20 lbf S ft).
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 11 figure 10) with anti-seize lubricant (key 244). Place the thrust bearing in the pusher plate (key 135, figure 10), slide the two parts onto the handwheel stem (key 133). Coat the retaining screw threads with thread locking sealant (key 242).
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 12 2. Remove the retaining ring (key 154) and drive out the lever pivot pin (key 153). 3. Two screws (key 156) hold the right- and left-hand levers (key 146) together. Remove the screw from the top of the levers so that the levers will drop down out of the assembly.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 13 3. Remove the cap screws and casing screws and nuts (keys 22 and 23), lift off the upper diaphragm casing (key 1), and remove the diaphragm (key 2). 4. Remove the cap screw (key 3) and the washer (key 25), then take off the diaphragm plate (key 4).
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 14 11. Pack the needle bearing and race (keys 37 and 38) with lithium grease (key 241), and slide the bearing onto the spring adjuster (key 12). 12. Put the spring seat and actuator spring (keys 11 and 6) into the yoke (key 9).
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 15 Disassembly for Casing-Mounted Travel Stop 1. Bypass the control valve. Reduce the loading pressure to atmospheric, and remove the tubing or piping from the connection in the body (key 142).
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 16 Figure 6. Type 657 Actuator Sizes 30 through 60 APPL Y LUB 40A8765–C/DOC Figure 7.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 17 Figure 8. Type 657 Size 87 Actuator APPL Y LUB 50A8767–C / IL Parts Kits Key Description Part Number Kits for Side-Mounted Handwheels Retrofit kit includes parts to add a side-mounted handwheel.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 18 Key Description Part Number Sizes 46 & 60 18B2713X112 Sizes 70 & 87 18B2713X122 With down travel stop (style 2) Sizes .
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 19 Figure 9. Top-Mounted Handwheel Assembly for Size 30 through 60 Actuators APPL Y LUB/SEALANT NOTES: THE TOP MOUNTED HANDWHEEL IS NOT DESIGNED FOR USE UNDER HEAVY LOAD OR FOR FREQUENT USE.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 20 Figure 11. Side-Mounted Handwheel Assembly for Size 34 and 40 Actuators APPL Y LUBRICANT 30A8778-D / IL Figure 12.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 21 Figure 13. Type 657 Size 70 and 87 Actuators with Side-Mounted Handwheel APPL Y LUB 50A8769–D / IL SECTION A–A.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 22 Figure 14. Casing-Mounted Adjustable Up Travel Stop for Sizes 30 through 60 Actuators (Style 1) 28A1206-C / IL APPL Y LUBRICAN.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 23 Figure 16. Casing-Mounted Adjustable Down Travel Stop for Size 30 and 40 Actuators (Style 2) APPL Y LUB BV8054–D / IL Key De.
657 Actuator (30-70 and 87) Instruction Manual Form 1900 February 2007 24 Key 6 Actuator Spring ACTUATOR SIZE DIAPHRAGM PRESSURE RANGE TRAVEL, mm (INCHES) SIZE Bar Psig 11 (0.
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