Flowserve Logix 3200IQ Digital Positioner - Manual (Page 14)

Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.
Flow Control Division Springville, Utah 84663-3004 Cookville, TN 38501
www.flowserve.com Phone: 801 489 2233 Phone: 931 432 4021
FCD AXAIM3200-00 9/04 Page: 14 of 32
© 2004, Flowserve Corporation, Printed in USA
Automax Logix 3200IQ Digital Positioner
Installation, Operation and Maintenance Instructions
Maintenance and Repair
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
14-18 and 28 and proceed as outlined below. The
following tools are required:
• Flat plate or bar about 1⁄ 8" thick
• Phillips screwdriver
• 1/4" nutdriver
WARNING: Observe precautions for handling
electrostatically sensitive devices.
Figure 14: Driver Module Assembly
1. Make sure the valve is bypassed or in a safe condition.
2. Disconnect the power and air supply to the unit.
3. Remove the driver module cover (Figure 17), using a
flat bar or plate in the slot to turn the cover.
4. Remove the spool valve cover by removing the screw
and sliding the cover assembly backwards until the tab
is clear of the slot (Figure 15). The sheet metal cap,
hydrophobic filter and O-ring should be removed with
the spool valve cover. It is not necessary to take these
parts out of the spool valve cover.
Figure 15: Spool Valve Cover Assembly
Figure 16: Spool and Block
5. Being careful not to lose the nylon washer, remove the
Phillips-head screw that attaches the driver module to
the main housing (Figure 16).
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.
6. Remove the spool valve block by removing the two
Phillips-head screws and carefully sliding the block off
the spool (Figure 16).
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 17).
Pressure Sensor Board
Hall Sensor
Connection
Pressure
Modulator
Connection
O-ring
Driver Module
Assembly
Analog
Output
Board
Connection
Analog
Output Board
Install Barbed Fitting after
Driver Module is in housing
Hall Sensor Connector
Pressure Modulator Connector
Position wires
to the rear
of Modulator
Regulator
Pressure Sensor
Board Connection
User Interface
Board Connection
Stem Position
Sensor
Connection
Main PCB
Retaining
Screw
Screw
Spool Valve Cover
Spool Valve
Screw
Nylon
Gasket
Driver to
Housing Screw
Spool
Spool
Valve
Block
Housing