Flowserve APEX 8000 Series Installation Operation & Maintenance Download | Manualshive

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Summary of Contents for APEX 8000 Series

Page 1: ...lugging one of the output ports NOTE The APEX 8000 high performance positioner must use the I P NT 3000 Transducer The I P 2000 Transducer is not acceptable for use with the APEX 8000 Series Positioner The APEX 8000 positioner can handle supply pressures up to 150 psi thus a supply regulator is usually not required However a five micron air filter is required for pneumatic positioners and a coales...

Page 2: ... capsule moves up it will close the exhaust seat of the upper pilot poppet and open the supply seat which applies increased air pressure to the bottom cylinder port At the same time the pilot valve capsule will open the exhaust seat for the lower pilot poppet thus decreasing pressure to the top cylinder port This difference in pressure will drive the piston outward rotate the pinion and stretch th...

Page 3: ...ositioner onto the bracket Make sure positioner shaft and coupler are engaged and centered Finger tighten positioner bolts 5 Proceed to Connecting APEX 8000 Positioner Ports Connecting APEX 8000 Positioner Ports 1 For double acting actuators connect positioner ports 1 and 2 to the actuator Port 1 is always connected to the actuator port used to drive the actuator away from its start or fail positi...

Page 4: ... if necessary 6 Connect supply pressure to port marked Supply stroke actuator valve two or three times to align position with actuator With a 50 percent input signal tighten all mounting bolts Stroke actuator to verify proper alignment Position Calibration Introduction APEX 8000 positioners are calibrated at the factory however due to shipping and handling it may be necessary to check the calibrat...

Page 5: ... Cam return spring See Figure 4 Positioner Balance Adjustment CAUTION Balance pressure is 75 percent of the supply pressure and is the average pressure of output ports 1 and 2 Balance is preset at factory However if this adjustment becomes necessary carefully make this adjustment slowly allowing the positioner to stabilize Check after a short while to make sure balance pressure is correct Balance ...

Page 6: ... travel stops Allow actuator pressure to stabilize 7 Observe the pressure gauges If reading is not correct turn balance adjustment screw about 1 8 turn at a time and wait about 20 30 seconds for pressure to stabilize counterclockwise to increase pressure Continue until output pressure level of the higher pressure gauge is approximately 80 percent of supply 8 Replace rubber cap over balance adjustm...

Page 7: ...k actuator responsiveness by providing a step signal to positioner When gain is set as desired check valve zero and span calibration and re calibrate if needed 7 Return the valve to service Calibrating I P Module Zero and Span Settings NOTE Although calibration can be accomplished using the output pressure gauge on the I P module its accuracy is 3 percent The standard gauge should be removed only ...

Page 8: ...er adjustments are obtained Adjusting the Minimum Pressure Cutoff Feature The APEX 8000 positioner with I P Transducer has a Minimum Pressure Cutoff MPC feature which allows the user to set the positioner When the input signal falls below a user adjustable current the pressure output falls rapidly to approxi mately 1 7 psi causing the valve to move to the failure position This feature is generally...

Page 9: ...o ensure a clean air supply Check and maintain filter regularly 2 Make sure all arms and levers move freely 3 Check for loose parts 4 Be sure there are no leaks in the air supply tubing fittings or connections 5 Refer to the troubleshooting chart on page 9 in case of problems Pilot Relay Disassembly and Reassembly The pilot relay is available as a complete unit and can be easily replaced See Steps...

Page 10: ...pper relay body 9 being careful not to damage seating surface or O rings 14 Reinstall poppets 28 poppet springs 29 Seat Spring 39 O rings 30 and poppet covers 27 before installing retaining rings 31 15 If signal diaphragm assembly 16 is damaged proceed as follows With relay halves still apart remove four screws 32 holding signal diaphragm assembly 16 to the pilot relay assembly Remove locking scre...

Page 11: ...t locking knobs 4 Wear of arms or pins 5 I P mounting bolts loose 6 Stroke has change in valve 1 Remove cover and check three screws holding positioner to bracket check two bolts holding bracket to yoke 2 Tighten nuts and bolts on linkage and stem clamp 3 Tighten zero adjustment locking knob re calibrate if necessary 4 Replace worm arms pins grease appropriately 5 Tighten I P mounting bolts 6 Refe...

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Page 14: ...er user must therefore assume the ultimate responsibility for the proper sizing and selection installation operation and maintenance of Flowserve products The purchaser user should read and understand the INSERT OFFICIAL USER INSTRUCTION TITLE instructions included with the product and train its employees and contractors in the safe use of Flowserve products in connection with the specific applica...

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