What You Need to Know About Calibrating Aircraft Nitrogen and Oxygen Service Tools

What You Need to Know About Calibrating Aircraft Nitrogen and Oxygen Service Tools

When calibrating your aircraft nitrogen and oxygen there several factors that must be considered. By taking these factors into consideration, you can ensure accuracy and reliability in your equipment. Your calibration lab should be following these steps in order to properly care for you equipment. Below we have compiled a checklist that your calibration lab should be following in their routine calibration plan.

  • Maintain 45 to 50 psi tire pressure
  • Grease wheel bearings quarterly
  • Gauges on unit should be inspected and calibrated annually to maintain accuracy
  • Manifold inlet and outlet hoses should be inspected weekly for cracking or kinking; replace as necessary
  • Keep unit clean and away from contaminants. Visually inspect for any system leaks or damages
  • Check towing eye for bending, excessive wear, and/or deformity
  • Ensure towing eye mounting bolts are not loose or missing. Tighten to 25 ft-lbs or replace as required

If your unit is booster equipped, different procedures apply. All maintenance performed on high-pressure boosters should be conducted in accordance with all applicable codes governing the handling operation, installation, and troubleshooting. Maintenance should only be conducted by qualified persons. Follow these steps to ensure accuracy:

  • Air cycling valve in the booster pump should be lubricated twice per year or sooner if driven with nitrogen/oxygen, or used heavily
  • Gauges should be inspected and calibrated annually to ensure accuracy
  • Inlet shop air filter element should be inspected and calibrated annually or when a pressure drop of 15 psi is reached

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