Flowserve 3400IQ Digital Positioner - Manual (Page 54)

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06
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20. Insert a driver-to-housing screw into the driver housing through the counterbored hole in
positioner main housing. Tighten with a Phillips screwdriver.
21. Reach through the main compartment into the driver module compartment of the positioner and
install the barbed fitting on the side of the driver module using the 1/4" nutdriver.
NOTE: Do not mix the barbed fitting with those from older Logix positioners. Older models
contain orifices that will not work in the Logix 3400IQ model. Orifices are brass-colored, barbed
fittings are silver-colored.
22. Reconnect the flexible tube coming from the regulator to the barbed fitting.
23. Feed the driver module wires into the main chamber of the housing, and connect them to the
main PCB Assembly.
24. Verify that the three O-rings are in the counterbores on the machined platform where the spool
valve block is to be placed (Figure 22).
25. Carefully slide the spool into the connecting clip on the top of the driver module assembly.
26. Carefully slide the block over the spool, using the machined surface of the housing base as a
register (Figure 14). Slide the block toward the driver module until the two retaining holes line
up with the threaded holes in the base.
27. Install two spool-valve screws and tighten securely with a Phillips screwdriver (see Figure 14).
28. Slide the spool valve cover assembly over the spool valve until the tang engages into the
housing slot. Install spool valve cover screw and tighten securely (see Figure 13).
29. Install the plastic board cover. Insert the three retaining screw through the plastic cover into the
threaded boss and tighten evenly, using a Phillips screwdriver. Do not overtighten (see Figure
16).
30. Reconnect power and air supply to the positioner and perform a stroke calibration.
31. Reinstall all covers.
8.2 Regulator
The regulator reduces the pressure of the incoming supply air to a level that the driver module can
use.
Replacing Regulator
To replace the regulator, refer to Figures 11 and 15 and proceed as outlined below. The following
tools are required:
• Phillips screwdriver
• 1/4" nutdriver
c WARNING: Observe precautions for handling electrostatically sensitive devices.