Flowserve 3400IQ Digital Positioner - Manual (Page 52)

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06

c WARNING: Spool (extending from the driver module assembly) is easily damaged.
Use extreme caution when handling spool and spool valve block. Do not handle the
spool by the machined portions of spool. The tolerances between the block and spool
are extremely tight. Contamination in the block or on the spool may cause the spool to
hang.
Figure 15: Driver Module Barbed Fitting
#BSCFE
'JUUJOH
'MBU
PO
)PVTJOH
'MBU
PO
%SJWFS
.PEVMF
%SJWFS
.PEVMF
$PWFS
6. Remove the spool valve block by removing the two Phillips-head screws and carefully sliding
the block off the spool (Figure 14).
7. Carefully remove the spool by sliding the end of the spool out of the connection clip. Excessive
force may bend spool.
8. Remove the main cover.
9. Remove the plastic board cover by removing the three retaining screws (see Figure 16).
10. Disconnect the flexible tubing from the barbed fitting at the driver module assembly (see Figure
15).
11. Use the 1/4" nutdriver to remove the barbed fitting 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 12). 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.