Flowserve Logix 1200e LGAIM0044 - Manual (Page 8)

44-8 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611
Driver Module Assembly
The driver module assembly moves the spool valve by
means of differential pressures on its diaphragm. Air is
routed to the module from the regulator through a
hose that connects to the assembly through a hose
barb with an integral orifice. Wires from the module
connect the hall effect sensor and the pressure modu-
lator coil to the collector board.
Driver Module Assembly Replacement
To replace the driver module assembly, refer to
Figure 7, 8, 9, 11, 20 and proceed as outlined below.
The following tools are required:
Flat plate/bar about 1 / 8 -inch thick
Phillips screwdriver
1. Make sure 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 9), using
flat bar/plate in slot.
4. Remove the spool valve cover by removing the
screw and sliding the cover assembly backwards
until the tab is clear of the slot. Removing the sheet
metal cap, hydrophobic filter, or O-ring from this
assembly is not necessary (Figure 11).
5. Being careful not to lose the nylon washer, remove
the Phillips-head screw that attaches the driver
module to the main housing (Figure 8).
6. Remove the spool valve block by removing the two
Phillips-head screws and carefully sliding the block
off the spool (Figure 8).
CAUTION: The spool (extending from the driver
assembly) is easily damaged. Use extreme cau-
tion when handling the spool and spool valve
block.
7. Carefully remove spool by sliding end of spool out
of connecting clip. Excessive force may bend spool.
8. Remove main cover.
Figure 7: Driver Module Assembly
Collector Board
Pressure
Modulator
Connection
H all Sensor
Connection
O-ring
Driver Module
Assembly
Minimum Pressure
Set Screw (factory
calibrated)
Position wires to
the rear of Modulator
Install orifice before driver
module is in housing
H all Sensor Connector
Pressure Modulator Connector