Voyager IV
Nitrox System
Nuvair www.nuvair.com
Page
22
1) Turn on the High Pressure Compressor and allow to run for 1-2 minutes or until Analyzers
stabilize.
2) Crack open the bleed valve on the side of the compressor so that the running HP Compressor
maintains 1500-2000 psi (100-400 bar) outlet pressure. Air will now be flowing past both
Oxygen Analyzers for calibration purposes.
3) Monitor all gauges for proper operating range and check all connections for leaks.(page 20)
4) Calibrate Oxygen Analyzers while the HP Compressor is pumping air. Refer to the Oxygen
Analyzer manual included with the Nitrox System for details. Note that special calibration
procedures may be required when operating at altitudes above sea level.
♦
Permeate Oxygen Analyzer – Turn calibration knob so display reads 20.9%.
a. Fill Oxygen Analyzer – Remove the Flow Adapter Cap
covering the Sensor.
b. Expose the Sensor to ambient air for approximately 15
seconds.
c. Adjust Calibration Knob until Display reading stabilizes at
20.9%.
d. Reinstall the Flow Adapter Cap to the analyzer.
e. The Fill Oxygen Analyzer is now ready for use.
Different settings may be used depending on location,
so verify your actual ambient conditions and refer to
the Oxygen Analyzer manual for details.
5) Turn on the LP Compressor and increase the pressure to
a minimum of 90 psi.
6) Allow the Compressors to run for a 10 Minute warm up period for
the Membranes to warm up and stabilize. Check the Heater
Temperature Gauge to verify air temperature rises and is between 105-120 ºF (40-49 ºC).
7) Turn off LP Compressor and Re-Calibrate The Fill Analyzer..
8) Now that the System Temperature has stabilized You must Re-Calibrate the Fill O
2
Sensors.
See Step 4a above.
The Oxygen Analyzers may require re-calibration after 10-20 minutes of operation due to
humidity and temperature change effects on the Sensor. To recalibrate, turn off the LP Feed
Air and follow calibration instructions.
Sensor Cap
Removed
Calibration
Knob
Compressor Controls
Fill Oxygen Analyzer
Calibration Knob
Permeate Oxygen Analyzer
Provides Rough Reading
Fill Oxygen Analyzer
Provides Precise Reading
On/Off Knob for
HP Compressor
