Installation and Operating manual
Econ
®
Series 3300 Smart Valve Positioner www.eriks.com www.eriks.com
10
3 Installation
3.1 Safety
When installing a positioner, please ensure to read and follow safety instructions.
Any input or supply pressures to valve, actuator, and / or to other related devices must
be turned off.
Use bypass valve or other supportive equipment to avoid entire system “shut down”.
Ensure there is no remaining pressure in the actuator.
3.2 Figure 3301/3302 Installation
Figure 3301/3302 should be installed on linear motion valves such as globe or gate type
which uses spring return type diaphragm or piston actuators. The following components are
supplied in the linear positioner kit:
Positioner unit
Feedback lever and lever spring
Bar slide assembly
Standard linear bracket
2 pcs x U-bolt M8
2 pcs x M8 hexagonal headed bolts
4 pcs x M8 spring washer
6 pcs x M8 plate washer
4 pcs x M8 nuts
½” NPT gland for 6-8 mm cable diameter
(air connections and air hose to be supplied by customer)
3.2.1 Installation Steps
1. A correct bracket must be used in order to mount the positioner on the actuator yoke.
Please consider following important points when a custom bracket is being designed.
Positioner’s feedback lever must be parallel to the ground at 50% of the valve stroke.
2. Feedback lever connection with the coupling of the actuator should be installed in such a
way that the valve stroke length coincides with the corresponding figure in “mm” marked
on the feedback lever. Improper setting may cause poor linearity and may create
unnecessary hunting during operation.
Assemble the positioner with the bracket supplied by fastening the bolts. Please refer
to the back of the positioner for size of the bolts. The standard bolt size is M8.
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