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Instruction Manual
D103621X012
4320
January 2018
17
Sliding‐Stem (Linear) Actuators (e.g. Fisher 667)
Before mounting, verify that linear travel is greater than one‐half and not more than the maximum recommended
travel of the feedback kit.
1. Attach the mounting bracket to the actuator.
2. Loosely attach the feedback pieces and magnet assembly to the valve stem connector. Do not tighten the fasteners
because fine adjustment is required.
CAUTION
Do not install a magnet assembly that is shorter than the physical travel of the actuator. Loss of control will result from the
magnet assembly moving outside the range of the index mark in the feedback slot of the 4320 housing.
3. Center the magnet assembly inside the retaining slot 5.7 mm (0.22 inch) away from the bottom base of the
4. Align the magnet assembly as shown in figure 10.
5. Tighten the fasteners.
6. Mount the 4320 to the mounting bracket, using the mounting bolts. Any of the mounting holes may be used for
linear actuators. See figure 11.
the magnet assembly position through the entire travel range before putting into service.
Figure 10. Mounting—Sliding‐Stem Magnet Assembly
GE59830
MOUNTING FACES
MOUNTING
FACES
mm
(INCH)
MAGNET
ASSEMBLY
BOLT
BASE OF
HOUSING
5.7
$
2.0
(0.22
$
0.08)
ON/OFF
CONTROL OPTION