Nuvair Pro O2 alarm Analyzer User manual

Operation Manual
Pro O2alarm AnalyzerTM
Oxygen Analyzer
02.1.12

Pro O2alarmTM Oxygen Analyzer
NUVAIR Rev.02.01.2012 Page 2
Pro O2alarm Oxygen Analyzer Manual
If you have any questions on this equipment please contact Technical Support at:
Nuvair
2949 West 5th St.
Oxnard, CA 93030
Phone: [phone]
FAX: [phone]
Email: [e-mail]
Hours: Monday through Friday
8:00 AM to 5:00 PM PST USA
This Operation Manual contains important safety information and should always be
available to those personnel operating this equipment. Read, understand, and retain
all instructions before operating this equipment to prevent injury or equipment
damage.
Every effort was made to ensure the accuracy of the information contained within this manual;
however, we retain the right to modify its contents without notice. If you have problems or questions
after reading the manual, stop and call for information.

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Table of Contents
1.0Introduction ....................................................................................................... 4
2.0System Description ……………………………………………………………........ 5
2.1Controls ………………………………………………………….................. 6
2.2Display …………………………………………………………................... 6
2.3Alarm ...................................................................................................... 6
2.4Sensor …………………………………………………............................... 6
2.5Batteries …………………………………………………………….............. 6
2.6Flow Adapter Cap ..............………………………………………………... 7
3.0Calibration ……………………………………………….………………................. 7
3.1Calibration Methods ……………………………………………………….. 8
4.0Operation........................................................................................................... 8
4.1Programming Procedures ………… ………………………………............9
4.2Alarm Setting …………………………………………….............................10
4.3 Full Scale Value Setting …………………………………………………… 10
4.4 Calibration Oxygen Value ……………………… ……………………… 11
5.0Threshold Alarms .............................................................................................. 11
6.0Powering on and warming up ……………………………………………………… 12
6.1 Powering Off..……………………………………………………………… 12
7.0 Factory Reset ………………………………………………………………………..12
8.0 Maintenance………………………………………………………………………… 13
8.1Analyzer Care ……………………………………………………................ 13
8.2Battery Replacement …………………………………………………......... 14
8.3Sensor Replacement ……………………………………………................ 14
8.4 Handling Sensors ..…………………………………………………………. 15
9.0 Sensors ………….. ……………………………………………………………… 17
10.0 Troubleshooting.............................................................................................. 17
11.0 Spares and accessories ………..…………….…………………………………. 18
12.0 Relay Output Schematics………………………………………………………… 19
Warranty …………………….…………………………………………….……... 20

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Pro O2alarm Oxygen Analyzer Manual
1.0Introduction
This manual will assist you in the proper set-up, operation and maintenance of the Pro O2
alarmTM Oxygen Analyzer. Be sure to read the entire manual.
Throughout this manual we will use certain words to call your attention to conditions,
practices or techniques that may directly affect your safety. Pay particular attention to
information introduced by the following signal words:
Indicates an imminently hazardous situation, which if not avoided, will result in serious
personal injury or death.
Indicates a potentially hazardous situation, which if not avoided, could result in
serious personal injury or death.
Indicates a potentially hazardous situation, which if not avoided, may result in minor or
moderate injury. It may also be used to alert against unsafe practices.
Notifies people of installation, operation or maintenance information which is
important but not hazard-related.
Warnings Graphics Defined:
Gas Inhalation Skin damage

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2.0System Description
The Pro O2 alarmTM Oxygen analyzer measures oxygen (O2) levels in gases in the range of
0.0 to 100%. The Analyzer is designed to verify O2concentration in stored gas cylinders,
enclosed spaces and with compressors pumping nitrox. When used in breathing gas
applications, redundant Analyzers must be used for verification. In diving, for example, one
Analyzer must be used to monitor oxygen during breathing gas production and a second
independent Analyzer must be used to verify the oxygen content of the breathing gas prior to
diver use.
When using the Analyzer for diving applications with mixed gases other than air, you
must first obtain proper instruction from a certified diving instructor with a nationally
recognized training agency qualified in mixed gas diving. Improper use of this analyzer
may result in incorrect gas analysis which can lead to serious personal injury or death.
The Analyzer is battery powered and includes an
internally mounted Sensor with audible alarm. The
Water-Resistant Case includes a Digital Display and
controls that are environmentally sealed
The Analyzer uses a Flow Adapter Cap and Flexible
tubing to deliver sample gas to the Sensor.
Pressurized gases must be regulated to avoid
damage to the analyzer. Use of this Analyzer in a
hyperbaric chamber will void the owner’s warranty.
The Analyzer comes in a high impact storage case.
It is ready for use after calibration with an
appropriate certified calibration gas.
This analyzer is designed for use at atmospheric pressures only. It is not designed for
exposures in a hyperbaric chamber. Use of this analyzer in a hyperbaric chamber will
result in incorrect readings and may damage the unit.
Although the Analyzer is a rugged instrument, careless handling or abuse may result
in damage to the Analyzer resulting in inaccurate gas analysis. Inaccurate gas analysis
can lead to serious personal injury or death.
Breathing gas must always be analyzed by two separate Analyzers, with one used for
production and one used for analysis after production. Never depend on a single
Analyzer during both gas production and delivery. If the Analyzer readings do not
agree, both units must be recalibrated. Inaccurate gas analysis can lead to serious
personal injury or death.
Flow
Adapter Cap
Over Sensor
Face
Water-
Resistant
Case

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2.1.Controls
2.2.Display
2.3.Alarm
The Analyzer includes an audible alarm that is activated when the sensor reaches a user
programmed minimum % of oxygen and maximum % of oxygen. The alarm will not clear until
the concentration of O2moves into the threshold programmed by the user.
2.4.Sensor
The Analyzer uses an electrochemical O2sensor to measure O2content in gases. The
sensor is disposable and user-replaceable, with a life expectancy of up to 24 months
depending on usage. The sensor is designed for use at atmospheric pressure (0 P.S.I.). The
gas mixture to be analyzed must be regulated accordingly, and any potential for pressure or
vacuum must be avoided.
2.5.Batteries
One 9-volt battery provides power. The battery is located inside the Analyzer and is user-
replaceable. The battery should be removed any time the Analyzer will be stored without use
for extended periods of time. Screen will blink alternately from “000” to “bAt” at start up when
battery is low.
Digital
Display
On/Off Button
Low Battery
Indication
Adjust Button
Relay
Output
Program Button
Active Oxygen
Reading
0 – 100 %
In .1% increments

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2.6.Flow Adapter Cap
The Analyzer includes a Flow Adapter Cap with flexible tubing and flow orifice. It attaches to
the Sensor port and is sealed by an o-ring. It can be used to direct the gas sample flow to
the Sensor via one of two methods:
Flow to the sensor needs to be restricted to .5-1liter of pressure maximum. Nuvair offers flow
restrictors to accomplish this task. See appendix.
3.0Calibration
Oxygen Analyzers must be calibrated before each use. Improper calibration may
result in the use of incorrect breathing gas mixtures, which may cause serious injury
or death to the person using the gas mixture.
Calibration or use of the Analyzer with a low battery may result in inaccurate readings.
Inaccurate gas analysis can lead to serious personal injury or death.
When Analyzer calibration is performed at different atmospheric conditions than the
gas being measured, a calibration correction value may be required. Improper
calibration may result in the use of incorrect breathing gas mixtures, which may cause
serious injury or death to the person using the gas mixture.
If the Analyzer has been subjected to a recent change in ambient temperature, allow it
to stabilize for one hour before checking calibration.
During the warm up time if the oxygen percentage of the mixed gas flow is different
from the value of calibration set in the instrument, a failed calibration is obtained and a
wrong analysis value will be displayed.
Sample Flow Method
Flow is Delivered from
Low Pressure Source
via Flexible Tubing
Direct Flow Method
Flow is Directed to
Flow Orifice on Face
of Flow Adapter Cap
Vent Hole

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3.1.Calibration Methods
Calibration should always be performed at the same temperature and humidity conditions as
the gas being measured. This is not always possible, for example, in a tropical environment
where dry breathing gas from a high-pressure scuba cylinder will be measured after Analyzer
calibration has been performed in the warm, humid ambient air. Under these conditions a
calibration correction value may be required, or dry air must be used for calibration. It may be
required for the analyzer to be auto calibrated to a certified calibration gas.
Obtain proper training before attempting special calibration procedures. Improper
calibration may result in the use of incorrect breathing gas mixtures, which may cause
serious injury or death to the person using the gas mixture.
To assure the greatest accuracy for other applications, use the calibration gas concentration
closest to the expected concentration in the gas being measured.
4.0 Operation
Prior to each Analyzer use:
1) Turn unit on by holding on/off button for 2 sec, until display shows “On”, after that the
“Att” (Wait) message will be displayed for about 4 seconds, then the sensor auto-
calibration procedure is started.
2) The auto-calibration last about 5 seconds; during this time the display will show the
message “CAL” and “Att” alternatively. Be sure during this time the exposed to the gas
mix with oxygen percentage as programmed in the O2c (calibration) parameter (SEE
PROGRAMMING PROCEDURE). By default, for simplicity, the O2c value is set at 21%
that corresponds to the percentage of Oxygen in free air in this case be sure that flows
air on the sensor before switching on and during the warm up time.
3) At the end of the warming up and calibration time, the display will show the blinking
value in mV read from the oxygen sensor during calibrations: the instrument is now
ready to read oxygen concentration of the gas.
4) Connect the sensors flow adaptor to the gas. The flow rate of gas must equal 1 – 5
L/min. To produce this flow, a Flow Restrictor and Regulator may be required. See
Spares and Accessories section. The display will now read the oxygen content
continuously of the gas flow.
5) While the analyzer is displaying the oxygen percentage press the calibrate button for
more than 1 second to initiate the mV output display mode. It is important to
periodically monitor this value in order to confirm the sensor is working properly and
not expired.
Gas, even under moderate pressures, can cause extreme bodily harm. Never allow any
gas stream to be directed at any part of your body.

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Tip: You can check the battery life and current temperature by holding Adjust button for 3
seconds. The display will alternate from battery life to current temperature (celcius) twice
before returning the home screen.
Never expose the sensor to pressures above atmospheric pressure (0 P.S.I.) or you
may cause damage to the sensor and/or receive false readings. Damaged Sensors will
not provide accurate gas analysis. Inaccurate gas analysis can lead to serious
personal injury or death.
4.1.Programming Procedures
Keep the “Pro” button pressed for more than two seconds and then release the button.
“Pr” should display for two seconds and then the display will change to AL 1 and
alternate with the 3 digit set value.
It is possible to program:
oAL 1 Minimum alarm point expressed in % of oxygen concentration
oAL 2 Maximum alarm point expressed in % of oxygen concentration
oFSC Value expressed in % of oxygen concentration corresponding to the
current output full scale value (20mA). 20mA always correspond to 100 %
oxygen concentration.
oO2c Oxygen sensor calibration point
At the end of the programming procedure the display will show “End” and the
instrument will display the oxygen content of the gas mix.
Below are the actual screen views of each of the modes.
Program
First Alarm
Full Scale Value
Second Alarm
Oxygen Sensor
Calibration
21% reading

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4.2.Alarm Setting (AL 1 & Al 2)
1.) Press the “Pro” button for more than two seconds and then release the button.
On the display will appear “Pr” for two seconds, then “AL1” will appear and be
ready for changing the value of the first alarm point. After a second the display will
show the value of “AL1” O2%(0% default)current setting.
2.) The blinking digit shows the cursor position.
3.) Press the “Pro” button to increase the value (from 0 to 9)
4.) Press the “Adjust” button to move the cursor to the next digit, the “Adjust” button
will be used to cycle through the rest of the digits.
5.) To complete your entry and save the O2% value, press the “On/Off” button. You will
then automatically jump to “AL 2” programming view.
6.) Repeat steps 3 through 5 to modify and save the “AL 2” O2% desired value (100%
default).
7.) Once programming of “AL 2” is complete you will be in the “FSC” Value Screen and
ready for programming this value. To jump to the end continue to press the “On/Off”
button until the end screen appears.
4.3.Full Scale Value Setting (FSC)
Once the alarms have been set the Pro O2Alarm Analyzer goes to “FSC” view so that you
can change the analog full scale value. It is not necessary to modify this value which is
factory set at 100. This is the Oxygen concentration corresponding to 20 mA on the
analog output. 4mA is the value at 0% of Oxygen. This value can be changed in the same
manner as the Alarm settings:
1.) Press the “Pro” button for more than two seconds and then release the button.
On the display will appear “Pr” for two seconds, then “AL 1” will appear. Press the
On/Off button to cycle through the Alarm settings until you reach the “FSC” view.
The “FSC” screen and a 3 digit value will alternate for a few seconds and the Pro
O2Alarm Analyzer will be ready for adjusting the “FSC” Value.
2.) The blinking digit shows the cursor position.
3.) Press the “Pro” button to increase the value (from 0 to 9)
4.) Press the “Adjust” button to move the cursor to the next digit, the “Adjust” button
will be used to cycle through the rest of the digits.
5.) To complete your entry and save the FSC value, press the “On/Off” button. You will
then automatically jump to “O2c” programming view. To continue pass this to the
end press the On/Off button until the “End” screen appears.

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4.4.Calibration Oxygen Value (O2c)
After the “O2c” is set the Pro O2Alarm Analyzer goes to “O2c”, this is the current Oxygen
calibration value default is 21%. It is not necessary to modify this value. The display
alternates between “O2c” and the current value (21% default).
Press the “Pro” button for more than two seconds and then release the button.
On the display will appear “Pr” for two seconds, then “AL 1” will appear. Use the
On/Off button to cycle through the various settings until you reach the “O2c” screen.
The 3 digit value will alternate with the “O2c” screen for a few seconds and the Pro
O2Alarm Analyzer will be ready for adjusting the “O2c” Value.
1.) The blinking digit shows the cursor position.
2.) Press the “Pro” button to increase the value (from 0 to 9)
3.) Press the “Adjust” button to move the cursor to the next digit, the “Adjust” button
will be used to cycle through the rest of the digits.
4.) To complete your entry and save the O2c value, press the “On/Off” button. You will
then automatically jump to the “End” screen.
The oxygen calibration value will be the same value of the calibration set when the
instrument is switched on. During the warm up time if the oxygen percentage of the
gas flowing across the sensor is a different value of calibration set in the instrument, a
failed calibration is obtained and the wrong gas percentage will be displayed. Wrong
oxygen analysis may lead to death.
The calibration value of the Pro O2alarm is factory set at 21% and any adjustments to
this value will change the analyzers ability to properly ready the % of oxygen in a gas.
A wrong value in this parameter will give a wrong reading of O2concentration and the
instrument will not be accurate. All the analysis concentration shown on the display
will be wrong. If you modify this setting you must test the analyzer for accuracy with
certified testing gas. Do not modify this value. Wrong oxygen analysis may lead to
death.
5.0. Threshold Alarms
Should the Oxygen reading go over the threshold alarms (AL1 or AL2) the instrument
will go into alarm mode and will activate the (optional) relays output (open collector
max 100mA) and the internal buzzer. The display will show the trespassed alarm and
the actual measured value. To stop the audible alarm, press any key. In this event the
Pro O2alarm Analyzer will remain in alarm mode until the analyzed value goes below
the alarm.
The relay output typically is used to shut down the compressor. Nuvair can supply the
necessary components to adapt your compressor to the relay or provide them at the
time of install on a new compressor.

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6.0 Powering on and warming up
Press the On/Off button for more than one second, until the display shows “on”, after
that the “Att” (wait) message will be displayed for about 4 seconds, then the sensor auto-
calibration lasts about 5 seconds; during this time the display will show the messages ”CAL”
and “Att” alternatively.
Be sure that during this time the sensor is exposed to the gas mix with the oxygen
percentage as programmed in the “O2c” parameter (see programming procedure). By default
the parameter is set at 21% by default that corresponds to the percentage of oxygen in free
air, be sure that the air flow at this time across the sensor is 21% oxygen before turning on
the analyzer.
During the warm up time if the oxygen percentage of the gas flowing across the sensor
is a different value of calibration set in the instrument, a failed calibration is obtained
and the wrong gas percentage will be displayed. Wrong oxygen analysis may lead to
death.
6.1 Powering Off
At the home or gas reading screen, hold down the On/Off button for a couple of
seconds. The Analyzer will display “OFF” and then go blank.
7.0 Factory Reset
In case it is necessary to reset the Pro O2Alarm Analyzer to the factory settings,
power on the Analyzer pressing at the same time for more than one second the
“On/Off” and “Adjust” buttons. On the display will appear “res” and the instrument will
go to the reading page.
In case of reset, the instrument will delete all the alarms settings, the full scale value,
and any new conversion value of Oxygen sensor will be reset to factory settings.
Before using again the instrument, it may be necessary to program again the alarm
values, the full scale value, and the Oxygen sensor calibration if changed. All the
analysis concentration shown on the display would be wrong. Wrong Oxygen analysis
may lead to death.

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8.0. Maintenance
8.1. Analyzer Care
Analyzers immersed in liquid or stored in wet environments may not operate properly.
This may result in incorrect readings. Incorrect gas analysis may result in personal
injury or death.
Protect the analyzer from excessive shock and impact. Excessive shock and impact
may result in incorrect readings. Incorrect gas analysis may result in personal injury
or death.
Protect the analyzer from exposure to hyperbaric environments. Exposure to
hyperbaric environments may result in incorrect readings. Incorrect gas analysis may
result in personal injury or death.
•Do not clean Analyzer with anything other than a damp soft cloth.
•Do not immerse in liquid, leave unprotected outside, or store in a wet environment.
•Protect Analyzer from excessive shock and impact.
•Protect Analyzer from excessive exposure to sunlight and extreme temperatures.
•Do not use the Analyzer in a hyperbaric environment.

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8.2. Battery Replacement
Be sure to dispose of spent, leaking, or damaged Battery properly, according to local
regulations.
The following pictures illustrate the steps required to replace the batteries in the Analyzer.
8.3.Sensor Replacement
You may take note of your sensor number before installing a new sensor serial
number.
Be sure to dispose of spent, leaking, or damaged Sensors properly, according to local
regulations.
Do not swallow (ingest) either the electrolyte from the Sensor or the Sensor itself. The
Potassium hydroxide chemical contained in the Sensor will cause severe injury or
death. If electrolyte or the Sensor is swallowed, seek medical attention immediately.
Step 1. Remove
Screws
Step 2. Remove
Back Cover
Step 3.
Remove &
Replace Old
Battery
Step 5.
Reinstall
Screws
Step 4. Replace
Back Cover -
Do Not Pinch
Wires
Step 6. Turn
Analyzer On
Step 7.
Perform
Calibration
Sensor Serial
Number

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If after handling the Analyzer or Sensor, you find that your fingers or
other parts of your body feel “slippery” or the skin or eyes sting,
immediately flush affected area with clean, fresh water for at least 15
minutes. The stinging or slippery sensation is an indication of a leaking Sensor. The
Potassium Hydroxide chemical contained in the Sensor can cause severe injury or
death. Seek immediate medical attention if eye contact is made or skin stinging
persists.
8.4 Handling Sensors
Replacement Sensors are supplied in sealed bags. Normally Sensors do not present a
health hazard. Before opening the bag, check that the electrolyte has not leaked. However,
if electrolyte leakage has occurred, do not open bag. Dispose of Sensor properly or return for
replacement. If electrolyte leakage occurs while the Sensor is in service, use rubber gloves
and chemical splash goggles for handling. Rinse contaminated surfaces thoroughly with
water.
Electrolyte First Aid Procedures
•Ingestion - Drink a large volume of fresh water. Do not induce vomiting. Get
immediate medical attention.
•Eye Contact - Flush eyes with clean, fresh water for at least 15 minutes and get
medical help immediately.
•Skin Contact - Flush the affected area with clean, fresh water for at least 15 minutes
and removed contaminated clothing. If stinging persists get medical attention.
Do not try to disassemble the sensor. Sealed unit contains caustic liquid
(KOH) which may cause severe burns to skin and eyes. In case of contact,
flush 15 minutes with water. For contact to eyes also get medical
attention. Do not wet in any case. If not properly cured the eyes may have permanent
damages.

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The following pictures illustrate the steps required to replace the Sensor in the Analyzer.
Step 1.
Remove Flow
Adapter Cap
Step 2.
Remove
Screws
Step 3.
Remove
Back
Step 4.
Disconnect
Electrical
Connector
Step 5. Remove
Old Sensor from
Case by
Unscrewing
Step 6. Replace
with New
Sensor
Step 7. Remove
Shorting Plug from
Sensor Electrical
Connector & Reconnect
Step 9.
Reinstall
Screws
Step 8.
Replace
Front Cover
- Do Not
Pinch Wires
Step 10. Replace
Flow Adapter Cap
Step 12. Check
Calibration
Note: Reversing Polarity
Will Cause Display to
Read Negative
Step 11. Turn
Analyzer On

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9.0Sensors
Sensor replacement for Pro O2alarm
Analyzer Sensor Specifications
Sensor Type: Electrochemical (Galvanic)
Electrical Connector: 3.5 mm Molex Jack
Range: 0-100.0% Oxygen (0-1 ATA PPO2)
Display Accuracy: +/- 0.1%
Expected Sensor Life, Room Air: 0-24 Months @ ambient air
Output Signal: 11+- 3 milliVolt @ dry ambient air 74°F (23°c)
Power: 9V Alkaline Battery
Response Time: Less Than 12 Seconds
Drift: < 1% volume O2 / month @ air
Operating Temperature: 32-104°F (0-40°C)
Storage Temperature: recommended:41to 86°F (5 to 30°C)
maximum -4 to122°F (-20 to 50°C)
Pressure: 750 to 1250 hPa
Linearity Error: = 2% @ 100% O2applied for 5 min.
Zero Offset Voltage: = 200 uV in 100% N2, applied for 5 min.
Influence of Humidity: -0.03% rel. O2reading /%RH
Humidity: up to 100% RH
Temperature Compensation: NTC
Interferences: according to DIN EN 12598 and ISO 7767
Material in contact media: PA, PPS, PTFE, stainless steel
Warranty: 12 Months
In the interest of product improvement these design specifications may change without notice.
Note: All specifications are at ambient / sea level, 77°F / 25°C
10.0 Troubleshooting
SYMPTOM REASON SOLUTION
Battery symbol Low Battery Change the battery
No display
Switched off
Bad connection
Low Battery
Switch on
Check display/ battery connection
Change the battery
Reading erratic
Pressure on sensor
Radio transmission
Sensor old or faulty
Condensation on sensor.
Check flow
Move unit away
Change sensor
Dry in air
Display segments missing Display faulty Return to dealer
Reading drifts Rapid temperature change Stabilize temperature & recalibrate

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11.0 Spares and Accessories
Oxygen Sensors
Order the replacement Sensor closest in appearance to your existing Sensor.
Flow Restrictors and Regulators (Pro O2 TM)
A variety of Flow Restrictors and Pressure
Regulators for the Sample Flow Method are
available from Nuvair, all calibrated to produce a
flow rate of 1 – 5 L/min with a Regulator output of
100 – 160 P.S.I.
Universal Flow Restrictors are used for most
applications and are typically provided complete
with Regulator.
When analyzing Scuba Cylinder gases, special
Flow Restrictors can be used to obtain the sample
gas directly from the BC inflator hose. A variety of
BC Flow Restrictors are available to fit the different
types of inflator hose QD fittings used.
Pressure
Reducing
Regulator
Standard Flow Restrictor
Part - 9518-STD
MaresTM Flow Restrictor
Part – 9518-MARES
ScubaProTM Flow Restrictor
Part – 9518-SCUBAPRO
HP Regulated Flow Restrictor
Part No. 9520-Int
Universal
Flow
Restrictor
¼” FNPT Flow Restrictor
Part - 9518
Part No. 9519
HP Regulated Flow Restrictor
Part No. 9520-DIN

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12.0 Relay Output Schematics
4-20mA Connections: The relay output uses a special “Mini Jack” plug that can be
purchased separately from Nuvair. Insert the plug into the output jack. Connections diagram
below for additional wiring.
The plug should be connected or disconnected when the instrument is switched off, or
the instrument will automatically switch off.
Open Collector Connections:

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NUVAIR Pro O2alarmTM Warranty
NUVAIR extends a limited warranty, which warrants the Pro O2AlarmTM to be free from defects in
materials and workmanship under normal use and service for a limited period. The Pro O2AlarmTM is
warranted according to the pro-rated terms as set forth below. This warranty is not transferable.
NUVAIR will, at it’s discretion and according to the terms as set forth within, replace or repair any
materials which fail under normal use and service and do not exhibit any signs of improper
maintenance, misuse, accident, alteration, weather damage, tampering, or use for any other than the
intended purpose. Determination of failure is the responsibility of NUVAIR, which will work together
with the customer to adequately address warranty issues. When any materials are repaired or
replaced during the warranty period, they are warranted only for the remainder of the original warranty
period. This warranty shall be void and NUVAIR shall have no responsibility to repair or replace
damaged materials resulting directly or indirectly from the use of repair or replacement parts not
approved by NUVAIR.
Terms:
NUVAIR warrants the Pro O2AlarmTM to be free from defects in material and workmanship for a
period of twelve (12) months from date of purchase. The warranty covers parts and labor.
A warranty registration card, supplied with system documentation, must be filled out and submitted to
NUVAIR for the warranty to be registered. If the warranty registration card is not received within ten
(10) days of purchase, the warranty will begin with the date of manufacture by NUVAIR.
Maintenance Items:
Any materials which are consumed, or otherwise rendered not warrantable due to processes applied
to them, are considered expendable and are not covered under the terms of this policy. This includes
batteries.
Return Policy:
Application for warranty service can be made by contacting NUVAIR during regular business hours
and requesting a Return Material Authorization number. Materials that are found to be defective must
be shipped, freight pre-paid, to the NUVAIR office in Oxnard, California. Upon inspection and
determination of failure, NUVAIR shall exercise its options under the terms of this policy. Warranty
serviced materials will be returned to the customer via NUVAIR’s preferred shipping method, at
NUVAIR’s expense. Any expedited return shipping arrangements to be made at customer’s expense
must be specified in advance.
Limitation of Warranty and Liability:
Repair, replacement or refund in the manner and within the time provided shall constitute NUVAIR’S
sole liability and the Purchaser’s exclusive remedy resulting from any nonconformity or defect.
NUVAIR shall not in any event be liable for any damages, whether based on contract, warranty,
negligence, strict liability or otherwise, including without limitation any consequential, incidental or
special damages, arising with respect to the equipment or its failure to operate, even if NUVAIR has
been advised of the possibility thereof. NUVAIR makes no other warranty or representation of any
kind, except that of title, and all other warranties, express or implied, including warranties of
merchantability and fitness for a particular purpose, are hereby expressly disclaimed. No salesman or
other representative of NUVAIR has authority to make any warranties.