operating nitrox membrane systems

Operating Nitrox SystemsOperating Nitrox SystemsOperating Nitrox SystemsOperating Nitrox Systems 1111

Presented by NuvairPresented by Nuvair

Operating Nitrox SystemsOperating Nitrox Systems 22

Membrane systems produce nitrox efficientlyMembrane systems produce nitrox efficiently

• Compressed air flows through the membrane• Nitrogen rich gas is expelled• Oxygen rich gas is produced

• Compressed air flows through the membrane• Nitrogen rich gas is expelled• Oxygen rich gas is produced


Components of the membrane systemComponents of the membrane system

Intake hose

Membrane

Air FilterMixing Tube

Permeate O2Rich Gas

Nitrogenrelease


Components of the membrane systemComponents of the membrane system

Heater

Analyzer

Filters

Regulator

HeaterThermostat


System SpecificationsSystem 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%

• 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%


The membrane is incorporated in these systemsThe membrane is incorporated in these systems

For dive operators who own HP compressors For dive operators

who want a complete nitrox solution


Rotary Screw System OperationRotary Screw System Operation

• System is for dive operators who already own HP compressor

• System is for dive operators who already own HP compressor


Rotary Screw System ComponentsRotary Screw System Components

Control Panel

PowerSwitch

Inline Permeate O2 Analyzer Membrane

Nitrox outTo HP

On/OffSwitch

Drier on/off switch


Rotary Screw System ComponentsRotary Screw System Components

Operation Gauge

Adjust O2 %

HP Intake

Nitrox outTo HP


Rotary System Rear ComponentsRotary System Rear Components

Heater ThermostatControl

Pressure switch

Waste air


Easy operationEasy operation

• Always read the manual first!

• Steps vary depending on installation

• Check oil level & filters first

• Turn on drier


• Steps vary depending on installation

• Check oil level & filters first

• Turn on drier


Calibrate the fill O2 analyzerCalibrate the fill O2 analyzer


Follow the steps in the manualFollow the steps in the manual

• Turn on HP compressor

• Adjust fill whip allowing air to escape

• Calibrate permeate O2 analyzer

• Turn on LP compressor

• Turn on HP compressor

• Adjust fill whip allowing air to escape

• Calibrate permeate O2 analyzer

• Turn on LP compressor


Follow all safety precautionsFollow 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%

• Adjust input pressure to over 80 p.s.i. (5.5 bar)

• Verify thermostat operation

• Increase or decrease pressure to set final O2%


Final adjustmentsFinal adjustments• Fill O2 analyzer should

read same as inline O2 analyzer

• You are ready to pump nitrox!

• Fill O2 analyzer should read same as inline O2 analyzer

• You are ready to pump nitrox!


Always test the nitrox in the cylinder with an independent analyzer!Always test the nitrox in the cylinder with an independent analyzer!

• Have the customer analyze the gas and sign for it



Components of the Voyager (nitrox in a box!)Components of the Voyager (nitrox in a box!)

Fill O2Analyzer

HP FilterCannister

Fill pressuregauge

Permeate O2Analyzer

Dial-A-PressureControl

LP Filters


Additional Voyager components…Additional Voyager components…

HP Controls

LP OilLevel

HP OilLevel

Feed aircontrol

LP Gauges

TemperatureGauges

HeaterThermostat


Using the VoyagerUsing the Voyager


• Check oil level & filters

• Check LP feed valve is off

• Start HP compressor


• Check oil level & filters

• Check LP feed valve is off

• Start HP compressor


Using the VoyagerUsing the Voyager• Open one fill whip -

adjust to hold 1500 p.s.i. (103 bar)

• Drain condensate• Calibrate analyzers

• Open one fill whip - adjust to hold 1500 p.s.i. (103 bar)

• Drain condensate• Calibrate analyzers


Operation is simple!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)

• 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)


Operation is simple!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!

• 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!


Always test the nitrox in the cylinder with an independent analyzer!Always test the nitrox in the cylinder with an independent analyzer!




Operation of membrane systems is easy!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.

• 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.


Thank you for attending!Thank you for attending!

operating nitrox membrane systems

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