Flowserve 3200MD - Manual (Page 22)

User Instructions - Digital Positioner 3200MD LGENIM0059-09 12/13
22
9. Remove the plastic board cover by removing the three retaining
screws. (See Figure 14.)
10. Disconnect the fl exible tubing from the barbed fi tting at the
driver
11. Use the ¼ " nutdriver to remove the barbed fi tting from the driver
module assembly.
12. Unplug the two wiring connections that link the driver module
assembly to the main PCB assembly.
13. Feed the two wires on the driver module back into the driver
module compartment so that they stick out the driver module
opening (See Figure 11). This will allow the driver module to
thread out without tangling or cutting the wires.
14. Grasp the base of the driver module and turn it counterclockwise
to remove. After it is threaded out, carefully retract the driver
module from the housing.
15. Remove the barbed fi tting from the side of the new driver mod-
ule using the ¼ " nutdriver.
16. Verify that the O-ring is in place on the top of the new driver
module. Lay the wires back along the side of the driver module
as shown in Figure 11 and hold the wires in position by hand.
17. Gently insert the driver module into the driver module compart-
ment in the housing. Turn the driver module clockwise to thread
it into the housing. Continue rotating the driver module until it
bottoms out.
18. Once the driver module has bottomed out so that the threads
are fully engaged, rotate the driver module counter clockwise
until the fl at on the driver module and the fl at on the housing are
aligned. This will align the screw hole for the next step.
19. Verify that the nylon gasket is in the counter bore in the driver
module retaining screw hole as shown in Figure 13.
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 fi tting on
the side of the driver module using the ¼ " nutdriver.
!
NOTE: Do not mix the barbed fi tting with those from older
Logix positioners. Older models contain orifi ces that will not
work in the Logix 3200MD model. Orifi ces are brass-colored,
barbed fi ttings are silver-colored.
22. Reconnect the fl exible tube coming from the regulator to the
barbed fi tting.
23. Feed the driver module wires into the main chamber of the hous-
ing, 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 25).
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 13). 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 Phil-
lips screwdriver (See Figure 13).
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 12).
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 15).
30. Reconnect power and air supply to the positioner and perform a
stroke calibration.
31. Reinstall all covers.
Figure 15: Main PCB Assembly
Main PCB
Analog Output Board
Pressure Sensor Board
Regulator
Plastic
Board
Cover
Main PCB
Retaining
Screws
Plastic Cover
Retaining Screws