Presented by Nuvair
Operating Nitrox Systems
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Membrane systems produce
nitrox efficiently
• Compressed air flows through the membrane
• Nitrogen rich gas is expelled
• Oxygen rich gas is produced
Operating Nitrox Systems
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Components of the membrane
system
Nitrogen
release
Permeate O2
Rich Gas
Membrane
Air Filter
Mixing
Tube
Intake
hose
Operating Nitrox Systems
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Components of the membrane
system
Analyzer
Regulator
Heater
Filters
Heater
Thermostat
Operating Nitrox Systems
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System
Specifications
•
•
•
•
•
Membrane temperature: 110 degrees F or 43 degrees C
Operating pressure: 80-170 p.s.i., 6-12 bar
Max input pressure: 300 p.s.i. or 21 bar
Air supply quality: LP Grade D, HP Grade E
Nitrox Range: 24% - 40%
Operating Nitrox Systems
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The membrane is incorporated in these
systems
For dive operators
who own HP
compressors
For dive operators
who want a
complete nitrox
solution
Operating Nitrox Systems
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Rotary Screw System Operation
• System is for dive
operators who
already own HP
compressor
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Rotary Screw System Components
On/Off
Switch
Inline Permeate
O2 Analyzer
Membrane
Control
Panel
Nitrox out
To HP
Power
Switch
Drier on/off switch
Operating Nitrox Systems
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Rotary Screw System Components
Adjust O2 %
HP Intake
Operation
Gauge
Nitrox out
To HP
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Rotary System Rear Components
Waste air
Heater
Thermostat
Control
Pressure
switch
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Easy operation
• Always read the
•
•
•
Operating Nitrox Systems
manual first!
Steps vary
depending on
installation
Check oil level &
filters first
Turn on drier
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Calibrate the fill O2 analyzer
Operating Nitrox Systems
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Follow the steps in the manual
• Turn on HP
•
•
•
Operating Nitrox Systems
compressor
Adjust fill whip
allowing air to
escape
Calibrate permeate
O2 analyzer
Turn on LP
compressor
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Follow all safety precautions
• Adjust input
•
•
pressure to over 80
p.s.i. (5.5 bar)
Verify thermostat
operation
Increase or
decrease pressure
to set final O2%
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Final adjustments
• Fill O2 analyzer should
read same as inline O2
analyzer
• You are ready to pump
nitrox!
Operating Nitrox Systems
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Always test the nitrox in the cylinder
with an independent analyzer!
• Have the
customer
analyze the gas
and sign for it
Operating Nitrox Systems
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Components of the Voyager
(nitrox in a box!)
Fill
pressure
gauge
Fill O2
Analyzer
Permeate O2
Analyzer
Dial-A-Pressure
Control
HP Filter
Cannister
LP Filters
Operating Nitrox Systems
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Additional Voyager components…
Feed air
control
LP Gauges
HP Controls
LP Oil
Level
Temperature
Gauges
Heater
Thermostat
HP Oil
Level
Operating Nitrox Systems
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Using the Voyager
• Always read the
manual first!
• Check oil level
& filters
• Check LP feed
valve is off
• Start HP
compressor
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Using the Voyager
• Open one fill whip •
•
adjust to hold 1500
p.s.i. (103 bar)
Drain condensate
Calibrate analyzers
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Operation is simple!
• Adjust regulator
•
•
initially for low
pressure
Turn on LP feed air
valve
Increase regulator
pressure to 80-160
p.s.i. (5.5-11 bar)
Operating Nitrox Systems
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Operation is simple!
• Wait for O2% to
•
•
•
stabilize on permeate
analyzer
Adjust regulated input
pressure
Wait for correct nitrox %
on the fill O2 analyzer
When O2% is correct,
attach whip & fill tank!
Operating Nitrox Systems
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Always test the nitrox in the cylinder
with an independent analyzer!
• Have the
customer
analyze the gas
and sign for it
Operating Nitrox Systems
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Operation of membrane
systems is easy!
• Membrane systems provide accurate
•
•
nitrox mixtures.
Membrane systems require the least
amount of training.
Membrane systems allow you to fill nitrox
tanks at same rate as air tanks.
Operating Nitrox Systems
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Thank you for attending!
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