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We have some dead spots on our air knife. What should we do?
The flow characteristics of the Air Knife (Super or Standard) have been tested before it was shipped.  We suggest that you follow the disassembly instructions and inspect the Air Knife for dirt contamination.  Cleaning instructions can be found on the installation and maintenance sheet shipped with the Air Knife or in Adobe Reader PDF format on our web site.  A second possibility is that the Air Knife has been undersupplied.  Do not use restrictive fittings, undersized line or filters that may not allow enough airflow into the plenum chamber of the Air Knife.  Air Knives that are 18” or longer must be supplied at two compressed air inlets at opposite ends of the Air Knife.  A third possibility is that the screws may have been over tightened during mounting or during reassembly.  Screws should be tightened snugly (7.5 ft/lbs).
Air Knives
  1. I can't get enough airflow out of my air knife. Should I add more shims?
  2. What are the temperature limits for your air knives?
  3. Can I operate your air knives with a blower?
  4. How much pressure should I use on your air knife?
  5. We have some dead spots on our air knife. What should we do?
  6. Can I connect the output of a Vortex Tube to an Air Knife?
  7. Can I cut an air knife to length in the field?
  8. Does the airflow from your air knife need to be pointed downward as shown in your catalog and on your web site in order to be effective?
  9. I see your Super Air Knives come in stock lengths up to 108”. What's the longest Air Knife available? Are other lengths available that you do not show in the catalog?
  10. What material is an Air Knife made from?
  11. How can I mount EXAIR’s Air Knives?
  12. What is a Plumbing Kit?
  13. What are the different Air Knife shim sizes and their color?
  14. I need more force out of my air knife, how do I get it?
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