Flowserve APEX 8000 High-Performance Positioner - Manual (Page 4)

Installation of APEX 8000 Series Positioner on Actuators
The APEX 8000 can be installed on most sizes of rotary and linear actuators. Actuators can be either double acting or spring return. Cams can
be used for direct acting or reverse acting directions. These instructions apply to rotary actuators only. For linear actu ator mounting instruc-
tions, consult the factory.
NOTE: For retrofitting to an actuator equipped with an Apex positioner, the same bracket and bolting may be used.
NOTE: NAMUR mounting is available with the APEX 8000 positioner. When retrofitting the APEX 8000 positioner to an actuator equipped with
another positioner, remove the existing positioner, tubing and associated bolting. See tubing instructions in Connecting APEX 8000 Positioner
Ports section.
Mounting Instructions for APEX 8000 with NAMUR Shaft Connection
1. Mount the bracket to the actuator. Finger tighten the bracket bolting.
2. If required, install a coupler on the actuator shaft. Make sure the shaft and coupler are centered. See Figure 2.
3. Verify the orientation of the actuator and coupler flats match the positioner flats on the end of the shaft. Loosen the cam if necessary.
(See “Cam Installations” instruc tions.)
4. Install the positioner onto the bracket. Make sure positioner shaft and coupler are engaged and centered. Finger tighten positioner bolts.
5. WARNING: Once the positioner is mounted on the bracket, make certain that the vent on the bottom of the positioner is not covered by
the bracket. If it is, remove the positioner from bracket and drill a 1/2” hole in the bracket to allow venting of the positioner. Blocking the
vent can cause pressurization of the housing and cause positioner failure.
6. 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 position (the factory cam setting is full clockwise at minimum input signal).
NOTE: For single acting, spring return actuators, plug output port
2. Connect supply air to the port marked “SUPPLY.”
3. Connect air (for pressure inputs) or instrument tubing or wiring (for 4-20 mA inputs). For current inputs, the terminal is marked (+) and
(-) inside the I/P module. The I/P is factory calibrated and should not require adjust ment. If adjustments are necessary, see “Calibrating
I/P Module Zero and Span Settings” section.
Caution: Signal air pressure higher than 30 psi may damage the module gauge and
instrument signal capsule; a 3-15 psi instrument signal is recommended on the pneumatic module.
4. Stroke actuator/valve two or three times to align positioner, coupler and actuator. With 50% input (actuator/valve at 45 degrees), tighten
all mounting bolts. Stroke actuator/valve again to verify there is no misalignment throughout the stroke.
5. Calibrate valve and adjust cam if necessary. (See “Cam Installation” and “Positioner Calibration” instructions.)
Apex 8000 High-Performance Positioner AXENIM0130-06 11/10
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