Flowserve Pulsair III Digital - Manual (Page 6)

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Worcester Controls Pulsair III Digital Electronic Positioner FCD WCAIM2056-00 - 08/04
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Worcester Controls Pulsair III Digital Electronic Positioner FCD WCAIM2056-00 - 08/04
6 Installation
Tubing
Use tubes with an inner diameter of ¼ " (6 mm) minimum.
Air Supply Requirements
For the maximum air supply pressure, see section 10, Technical Data.
The air supply must be free from moisture, water, oil, and particles.
The air must come from a refrigeration-dried supply or be treated in such a way that its
dew point is at least 18°F (10°C) below the lowest expected ambient temperature. If air
is now used, the supply medium must be a noncorrosive and non-fl ammable gas.
To ensure a stable and problem-free air supply, we recommend the installation of a
fi lter/pressure regulator <30 microns as close to the positioner as possible.
Before the air supply is connected to the positioner, open the hose freely for 2 to 3
minutes to allow any contamination to be blown out.
Direct the air jet into a large paper bag to trap any water, oil, or other foreign materials. If
contamination is detected, the air supply should be thoroughly cleaned before connect-
ing to the positioner.
a Warning: Do not direct the open air jet towards people or objects because it
may cause personal injury or damage.
Poor air supplies are the main source of problems in pneumatic and
electro-pneumatic systems.
Mounting
NOTE: If the positioner is installed in a hazardous environment, it must be of a type
approved for this purpose.
The PULSAIR III W positioner has an ISO F05 footprint, A. The holes are used to attach it
to the mounting bracket B, which is suitable for most types of linear actuator.
The spindle adapter C can be changed to suit the actuator in question.
C
Remove the existing adapter using two screwdrivers. Check that the spring ring on the
new spindle is undamaged and fi ts the new adapter before installing.
It is important that the positioner’s spindle and the arms that transfer the actuator
movements are correctly mounted. Any tension between these parts can cause incorrect
operation and abnormal wear.
C
B A Assembly Examples
Rotary Movement
Linear Movement
B