Using hexagonal bolts and washer, fasten figure 3303/3304 with the supplied bracket. Do
not tighten bolts completely before correct mounting of figure 3303/3304 has been confirmed.
Insert figure 3303/3304 main shaft into actuator’s stem, and place the bracket align to the
actuator’s bolt holes. After the alignment, please fasten all of the bolts.
4 Connections
4.1 Safety
Supply pressure should be clean and dry air – avoiding moisture, oil or dust.
It is always recommended to use an air filter regulator.
The operation of this positioner has only been tested with clean air. For gases
other than clean air please contact Econosto for suitability.
4.2 Supply Pressure Condition
Dry air with at least 10℃ lower than ambient temperature.
Avoid dusty air. Positioner’s inner filter can only filter 5 micron or larger.
Avoid oil.
Comply with ISO 8573-1, Class 2 (solid particle size and density and oil content).
Supply pressure range is 0.14~0.7 MPa (1.4~7 bar)
Set air filter regulator’s pressure level 10% higher than actuator’s spring range pressure.
4.3 Piping Condition
Ensure inside of pipe is clean of obstructions.
Do not use pipeline that is squeezed or shows any type of damages.
Pipeline should have more than 6mm of inner diameter (10mm outer diameter) to
maintain flow rate.
The length of pipeline system should not be extremely long. Longer pipeline system
may affect flow rate due to the friction inside of the pipeline.
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