Emerson FISHER 657- Manuals

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 5 Figure 3. Actuator Mounting Components for Size 30 through 70 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 DIAPHRAG...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 6 Figure 4. Bench Set Adjustment SPRING ADJUSTER LOWER BENCH SET LOADING PRESSURE UPPER BENCH SET PRESSURE MARK VALVE STEM RATED VALVE TRAVEL MEASURE MARK VALVE STEM HERE UPPER BENCH SET LOADING PRESSURE ACTUATOR STEM NOTES: TH...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 7 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 th...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 8 Note Replacement stem connectors are an assembly of two stem connector halves, cap screws, and a spacer between the connectorhalves. Remove the spacer and discard, if present, before clamping the actuator and valve stems toge...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 9 (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 co...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 10 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 ...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 11 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 injur...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 12 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 (key...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 13 CAUTION Over-tightening the diaphragm casing cap screws and nuts (keys 22 and 23) can damage the diaphragm. Do not exceed 27 N S m (20 lbf S ft) torque. Note Do not use lubricant on these bolts and nuts. Fasteners must be cl...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 14 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) ...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 15 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 N S m (1...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 16 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...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 18 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 prop...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 19 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 ...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 20 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....

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 21 Parts List Note Part numbers are shown for recommended spares only. For partnumbers not shown, contact your Emerson Process Management salesoffice. Actuator Assembly (figures 6, 7, or 8) Key Description Part Number 1 Upper D...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 24 Figure 8. Fisher 657 Size 87 Actuator APPLY LUB 50A8767-C Side-Mounted Handwheel (figure 11, 12, or 13) Key Description 34 Upper Sleeve 37 Needle Bearing 38 Needle Bearing Race 39 Bearing Retainer Flange 40 Set Screw 41 Set ...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 29 Figure 14. Casing-Mounted Adjustable Up Travel Stop for Sizes 30 through 60 Actuators (Style 1) 28A1206-C APPLY LUBRICANT Casing-Mounted Adjustable Up Travel Stops (figures 14 or 15) Key Description Part Number 133 Travel St...

Instruction Manual D100306X012 657 Actuator (30-70 and 87) November 2013 30 Figure 16. Casing-Mounted Adjustable Down Travel Stop for Size 30 and 40 Actuators (Style 2) APPLY LUB BV8054-E Casing-Mounted Adjustable Down Travel Stop (figure 16) Key Description Part Number 54 Stop Nut 133 Travel Stop S...