Flowserve 3400IQ Digital Positioner - Manual (Page 50)

Logix 3400IQ Digital Positioner FCD LGENIM3401-00 – 06/06
0
8 Maintenance and Repair
8.1 Driver Module Assembly
The driver module assembly moves the spool valve by means of a differential pressure across its
diaphragm. Air is routed to the driver module from the regulator through a flexible hose. A barbed
fitting connects the flexible hose to the driver module assembly. Wires from the driver module
assembly connect the hall effect sensor and the piezo valve modulator to the main PCB assembly.
Driver Module Assembly Replacement
To replace the driver module assembly, refer to Figures 11-15 and 25 and proceed as outlined below.
The following tools are required:
• Flat plate or bar about 1 ⁄
8
" thick
• Phillips screwdriver
• 1/4" nutdriver
c WARNING: Observe precautions for handling electrostatically sensitive devices.
Figure 11: Driver Module Assembly
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