Posted by Adem Erturk on

8 Tips on Operating a Pneumatic Interface

8 Tips on Operating a Pneumatic Interface

  1. Main air pressure must be maximum of 25 psig.
  2. Branch volume should be at least 2 cubic inches.
  3. If the controlled device bleeds air, then a PXP0.3 or PWP0.3 interface is suggested.
  4. Seal any leaks in the branch line.
  5. Blow out any loose contamination from the orifice that might be blocking air.
  6. Apply teflon tape to gauge or plug to prevent air leakage.
  7. If the pneumatic interface "LEAKS", increasing branch line pressure, hold a finger over the bleed orifice and input a low signal. If pressure starts increasing:
    • a. Remove the branch line
    • b. Power up unit and give a maximum signal
    • c. Place finger over branch port and tap for a couple of seconds. This could allow any debris to be blown out.
    • d. Replace air lines and retest.
  8. If the pneumatic interface "LEAKS ", decreasing the branch line pressure, hold a finger over bleed orifice & input a high signal. If the pressure starts decreasing:
    • a. Pinch branch line tubing. If pressure is stable, then check for leaks beyond the interface in the branch line
    • b. If pressure is still decreasing, then check at the interface
      1. Remove both air lines
      2. Place main air on branch port
      3. Tap finger over the exhaust hole for a few seconds. This could allow any debris to be blown out)
      4. Replace air lines and retest.

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