www.Fisher.comFisherr 657 Diaphragm ActuatorSizes 30-70 and 87ContentsIntroduction 1...Scope of Manual 1...
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201310deadband being too wide are no movement, a “jump” movement, or oscillating move
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201311MaintenanceActuator parts are subject to normal wear and must be inspected and
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 2013124. Remove the diaphragm casing cap screws and nuts (keys 22 and 23), then lift
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201313CAUTIONOver-tightening the diaphragm casing cap screws and nuts (keys 22 and 23
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 2013145. Loosen the travel stop locknut (key 137), and turn the handwheel (key 51) co
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 2013158. Insert the cap screws (key 22), and tighten the hex nuts (key 23) in the fol
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 2013164. Coat the groove in t he handwheel body (key 142) with lithium grease (key 24
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 2013178. Turnthehandwheeltoraisethelowersleeve(key46)untilitisfreeofthewormgear(key44
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 20131815. Position the upper diaphragm casing (key 1) onto the diaphragm (key 2) and
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201319The adjustable down travel stop (figure 16) limits the actuator stroke in the d
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 20132Table 1. SpecificationsSPECIFICATION(1)ACTUATOR SIZE30 34 40 45 46 50 60 70(1)87
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201320Parts OrderingEach actuator has a serial number stamped on the nameplate. Alway
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201321Parts ListNotePart numbers are shown for recommended spares only. For partnumbe
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201322Figure 6. Fisher 657 Actuator Sizes 30 through 60APPLY LUB40A8765-C
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201323Figure 7. Fisher 657 Size 70 ActuatorAPPLY LUB50A8768-C
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201324Figure 8. Fisher 657 Size 87 ActuatorAPPLY LUB50A8767-CSide-Mounted Handwheel(f
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201325Figure 9. Top-Mounted Handwheel Assembly for Size30 through 60 ActuatorsAPPLY L
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201326Figure 11. Side-Mounted Handwheel Assembly for Size 34 and 40 ActuatorsAPPLY LU
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201327Figure 12. Side-Mounted Handwheel Assembly for Size 45 and 60 ActuatorsAPPLY LU
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201328Figure 13. Fisher 657 Size 70 and 87 Actuators with Side-Mounted HandwheelAPPLY
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201329Figure 14. Casing-Mounte dAdjustableUpTravelStop for Sizes 30 through 60 Actuat
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 20133Figure 2. Schematic of Fisher 657 and 657-4 ActuatorsSPRING LIFTSSTEM UPAIR PUSH
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201330Figure 16. Casing-Mounted Adjustable Down Travel Stop for Size 30 and 40 Actuat
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201331Key 6 Actuator SpringACTUATOR SIZEDIAPHRAGMPRESSURE RANGETRAVEL, mm (INCHES)Bar
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201332Emerson Process ManagementMarshalltown, Iowa 50158 USASorocaba, 18087 BrazilCha
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 20134allowable valve stem load. (Contact your Emerson Process Management sales office
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 20135Figure 3. Actuator Mounting Components for Size 30 through 70 ActuatorsVALVE STE
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 20136Figure 4. Bench Set AdjustmentSPRING ADJUSTERLOWER BENCH SETLOADING PRESSUREUPPE
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 201371. If not already accomplished, provide a temporary means of applying an adjusta
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 20138NoteReplacement stem connectors are an assembly of two stem connector halves, ca
Instruction ManualD100306X012657 Actuator (30-70 and 87)November 20139(a) plus the friction force divided by the effective diaphragm area with increas
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