PACKING LIST NEXTTEQ LLC
Airtec Kit
OPERATION AND SERVICE MANUAL
Address: 8406 Benjamin Rd. Suite J, Tampa, FL 33634
Toll-free: 877-312-2333 • Toll-free Fax: 877-312-2444
Local Phone: 813-249-5888 • Fax: 813-249-0188
Website: www.nextteq.com
1 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST NEXTTEQ LLC
NEXTTEQ LLC
Dear Valued Customer:
Thank you for selecting the Nextteq LLC Airtec Kit. The Airtec Kit has been designed
and manufactured to meet the highest levels of quality, convenience, and performance.
Each Airtec Kit is tested to withstand the most rigorous operating conditions to ensure
that you will receive continuous and dependable performance, day after day.
Our goal is to provide you with superior service and support at every level of our
organization. Your satisfaction is our primary concern.
We urge you to call us with any questions or comments you may have. You can contact
us toll-free at 877-312-2333 or locally at 813-249-5888.
All of us at Nextteq, LLC appreciate the opportunity to serve you now and in the future.
Nextteq LLC
2 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST PACKING LIST
The following items are shipped with the
Standard Airtec Regulator Kit, Part No. STD-300:
• Regulator, Part No. STD-300-R
• Operation & Service Manual, Part No. STD-300-M
• Rubber Shroud Tube Holder, Part No. 357
The following items are shipped with the
Deluxe Airtec Regulator Kit, Part. No. STD-301:
• Regulator, Part No. STD-300-R
• Operation & Service Manual, Part No. STD-300-M
• Hard Shell Case, Part No. STD-300-1
• Rubber Shroud Tube Holder, Part No. 357
• Carbon Monoxide Tube, No.1A
• Carbon Dioxide Tube, No. 2AG
• Oil Mist Tube, No. 109AD
• Water Vapor Tube, No. 6A
• Water Vapor Tube, No. 6AG
ALWAYS check to make certain you have received all of the items listed above.
If you have any questions or need assistance, contact your Nextteq sales representative.
Toll-free Phone: (877) 312-2333
• Local Phone:(813) 249-5888
3 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST TABLE OF CONTENTS
Preface
Packing List……………………………………………………………………………....3
Warnings……………………………………………………………………………….…6
Standard Safety Rules.……...………………………………………………………….…9
Section I: Introduction
1.1 Monitoring Breathing Air………………………………………………………….10
1.2 Airtec Kit…………………………………………………………………………..12
1.3 Airtec Detector Tubes……………………………………………………………...12
1.4 Accuracy & Calibration……………………………………………………………13
Section II: Airtec Kit Components
2.1 Regulator…………………………………………………………………………...16
2.2 Flow meter…………………………………………………………………...…….16
2.3 Tube Holder………………………………………………………………………..17
Section III: Testing Procedure
3.1 Introduction………………………………………………………………………...18
3.2 Bottled Breathing Air………………………………………………………………18
3.3 Compressor Systems……………………………………………………………….20
Section IV: Maintenance & Troubleshooting
4.1 Testing for Leaks…………………………………………………………………..21
4.2 Regulator/Flow meter Failure……………………………………………...………21
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PACKING LIST TABLE OF CONTENTS
Section V: Sampling Tips
Tips for Tube Reading……………………………………………………………...…....22
Appendices
Appendix A: Parts List…………...………………………………………………………24
Appendix B: Returned Material Authorization………………………...………………...24
List of Figures
Figure 1 The Airtec System……………………………………………………….11
Figure 2 Airtec & Bottled Air……………………………………………………..14
Figure 3 Airtec & Compressed Air………………………………………………..15
Figure 4 Reading the Flow meter………………………………………...………..17
List of Tables
Table 1 Compressed Gas Association Grade D Standards……………………….12
Table 2 Airtec Tube Data…………………………………………………………13
Table 3 Regulator Specifications…………………………………………………16
Table 4 Flow meter Specifications…………………………………………….....17
5 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST TABLE OF CONTENTS
WARNINGS
READ AND UNDERSTAND ALL WARNINGS BEFORE USE
Read and understand ALL warnings before using this product. Failure to read,
understand, and comply with ALL warnings could result in property damage, severe
personal injury or death.
Read and understand ALL applicable Federal, State, and Local environmental health and
safety laws and regulations, including OSHA. Ensure complete compliance with ALL
applicable laws and regulations before and during use of this product. In particular,
follow ALL OSHA guidelines as set forth in Federal Register 20 CFR Part 1910.134 (d)
(2) (ii) states that breathing air systems employing an oil-lubricated compressor must
install a carbon monoxide alarm or a high temperature alarm or both. The Airtec System
does not substitute for a CO or high temperature alarm.
UNDER NO CIRCUMSTANCES should this product be used except by qualified,
trained, technically competent personnel and not until the warnings, Operation and
Service Manual, labels, and other literature accompanying this product have been read
and understood.
The Operation and Service Manual must be read and understood by each user before
operating this product or using its accessories, in order to ensure proper and safe use and
installation of this product and to ensure familiarity with the proper treatment and safety
procedures in the event of an accident.
ALWAYS dispose of chemicals and calibration sources in compliance with ALL
applicable safety laws, regulations, and guidelines for proper disposal. Failure to do so
may result in environmental and property damage, personal injury or death.
DO NOT remove or alter any label or tag on this product, its accessories, or related
products.
DO NOT operate this product should it malfunction or require repair. Operation of a
malfunctioning product, or a product-requiring repair may result in serious personal
injury or death.
DO NOT attempt to repair or modify the instrument, except as specified in the Operation
and Service Manual. If repair is needed, contact the Nextteq LLC customer service
department to arrange for a Returned Material Authorization (RMA).
6 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST TABLE OF CONTENTS
WARNINGS
ONLY use genuine Nextteq LLC replacement parts when performing any maintenance
procedures provided in this manual. Failure to do so may seriously impair instrument
performance. Repair or alteration of the product beyond the scope of these maintenance
instructions, or by anyone other than an authorized Nextteq LLC serviceman, will void
the warranty, and could cause the product to fail to perform as designed and persons who
rely on this product for their safety could sustain severe personal injury or death.
Review the interferences for each detector tube used in conjunction with this equipment.
Observe any temperature of humidity corrections for the detector tubes used with this
equipment.
Use ONLY Gastec detector tubes designed for use with the Airtec System. DO NOT use
other brands of detector tubes with the Airtec tube holder.
Detector tubes contain chemical reagents. DO NOT ingest or allow children to ingest
tube contents.
Avoid cuts from broken detector tubes.
The tube holder may have to be held in place during tube installation.
Excessive stretching of the tube holder will shorten the useful life of the tube holder.
The regulator incorporated in this equipment has a maximum inlet pressure of 3000 psig.
DO NOT exceed this pressure.
The flow meter will not operate properly if the regulator inlet pressure drops below 50
psig.
The Airtec System should be checked for leaks on a routine basis. Cracks or leaks in the
flow meter cover tube can affect flow meter accuracy. Leaks between the flow meter and
the tube holder will result in low detector tube readings.
The flow meter is calibrated for breathing air. It is not accurate when applied to other
gases.
The preset regulator delivery pressure of 50 psig should not be altered. The maximum
safe pressure for the flow meter is 75 psig.
DO NOT over tighten ANY threaded connection. Over tightening the regulator fitting
can cause distortion of the threads and/or seating surface. Over tightening the flow meter
needle valve will damage fine internal threads and sensitive metering sea t.
7 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST TABLE OF CONTENTS
WARNINGS
The system should always be stored in a clean dry place when not in use.
Some bottled breathing air is prepared by blending liquid nitrogen and liquid oxygen at
79% and 21% respectively. Oxygen content should be monitored when this type of
breathing air is used.
DO NOT attempt to remove the Airtec regulator from the breathing air source while the
regulator is under pressure.
Take precautions against water entry into the regulator. Use line pressure to blow out the
connector prior to regulator hookup when sampling compressed air.
Be sure that the weight of the Airtec System is properly supported during hookup to
compressed air lines.
Be sure that any adapters prepared for use of the Airtec System on compressed air lines
are capable of handling line pressure.
NEVER place the Airtec regulator or flow meter in a vise.
Disclaimer of Warranties
Nextteq LLC assumes no responsibility whatsoever, to any party whosoever, for any
property damage, personal injury, or death received by or resulting from, in whole,
or in part, the improper use, installation, or storage of this product by the user,
person, firm, entity, corporation or party not adhering to the instructions and
warnings or not adhering to all federal, state, and local environmental and
occupational health and safety laws and regulations.
The seller shall not be liable for direct, indirect, consequential, incidental or other
damages resulting from the sale and use of any goods and seller’s liability hereunder
shall be limited to repair or replacement of any goods found defective. This
warranty is in lieu of all other warranties, expressed or implied, including but not
limited to the implied warranties of merchantability and fitness for a particular
purpose, which is expressly disclaimed.
8 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST TABLE OF CONTENTS
WARNINGS
READ CAREFULLY BEFORE USING THIS PRODUCT
Some safety rules associated with compressed air systems are listed below.
This equipment is pressurized when in service and can cause personal injury if it is
improperly used or maintained.
DO NOT attempt to operate this equipment if any part is damaged or broken.
DO NOT tamper with the preset regulator adjusting screws as over pressurization could
occur.
DO NOT connect the flow meter to any pressure source capable of exceeding 75 psig.
DO NOT attempt to alter or repair this equipment yourself. Return to factory for repairs.
DO NOT use this equipment for gases other than compressed air.
Compressed air at high pressures can accelerate burning of combustible materials.
Compressed air cylinders should not be used for breathing air unless specifically labeled
as breathing air.
Compressed air cylinders should always be secured (e.g. chained) to a wall, post or in a
cylinder cart in an upright position when in use.
Compressed air cylinders should not be exposed to heat or sparks.
Smoking is prohibited in cylinder storage or usage areas.
NEVER operate motorized vehicles near a breathing air compressor inlet.
Filter systems utilized for purifying breathing air from oil-lubricated compressors employ
a catalyst to convert CO to CO2. Water contact will deactivate the catalyst.
9 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST SECTION I: Introduction
1.1 MONITORING BREATHING AIR
A chemical plant worker inspecting a tank
car cleaning operation, a fire fighter donning
his self-contained breathing apparatus, and a
SCUBA diver on a weekend holiday all face
a common situation. Each is putting his or
her life on the line by hooking up to a
temporary air supply. Assured that by using
a life-supporting device he/she is being
provided maximum protection, the quality of
that breathing air is probably the last thing
on his or her mind.
A quantitative testing device is the only way
to assure that the breathing air quality meets
minimum standards. The faster, easier, and
less expensive such testing is, the more often
it can be applied.
A compressed breathing air system has two
potential sources of contaminants: (1) those
entering the system with the intake air and
(2) those produced internally by a faulty
compressor or inadequate filtration system.
An example of the first type would be
vehicle exhaust intrusion caused by locating
the compressor air inlet too close to traffic
areas or loading zones. An example of the
second type might be oil mist accumulation
caused by an overfilled oil reservoir and
inadequate filter.
Some common breathing air contaminants
are carbon monoxide, carbon dioxide,
nitrogen oxides, oil mist, and water vapor, as
well as oxygen deficiency.
• Carbon Monoxide
Of the common potential
contaminants, CO is the most
deadly. It is colorless and odorless
with no warning properties. CO
combines with blood hemoglobin
more readily than oxygen causing
oxygen starvation in body tissues.
Exposure causes headaches, heart
palpitations, and loss of equilibrium,
confusion, unconsciousness, and
death.
• Carbon Dioxide
CO2 is also toxic but can be tolerated
in much higher concentrations than
CO. Effects are somewhat similar to
CO, but the increased breathing rate
accompanying CO
increases the intake of all coexisting
contaminants. Exposure causes
headaches, dizziness, sweating,
shortness of breath, increased
heartbeat and blood pressure, coma,
asphyxiation, and convulsions.
• Oil Mist
Oil mist and particulate matter are
forms of condensed hydrocarbons.
The larger particles are readily
removed by the upper respiratory
tract, but smaller particles can be
retained and cause problems. Oil mist
in the lungs can cause lipoid
pneumonia, and emphysema.
• Water Vapor
Water Vapor in a breathing air system
causes different problems. It can
promote system corrosion and cause
regulator failures due to icing in cold
weather. It can destroy the catalyst in
a filtration system that removes CO by
converting it to CO
poisoning
2
.
2
10 NEXTTEQ LLC (Rev. 2) 4/09
SECTION I: Introduction
SECTION I: Introduction SECTION I: Introduction
FIGURE 1
THE AIRTEC REGULATOR
Inlet Pressure Gauge
Outlet Hose
Barb
Flowmeter
CGA 346
Connection
11 NEXTTEQ LLC (Rev. 2) 4/09
SECTION I: Introduction
1.2 AIRTEC KIT
Your Airtec Kit includes the following components:
Regulator, Regulator Gauge, Flow Meter, Tube Holder
1.3 AIRTEC DETECTOR TUBES
The Airtec Kit is designed for use with the following Gastec Tubes:
Carbon Monoxide, Carbon Dioxide, Nitrogen Oxides, Oil Mist, Water Vapor
Use only the Gastec tubes listed above.
Airtec detector tubes are designed to meet the monitoring requirements for maintaining
Grade D (Compressed Gas Association) breathing air. These standards are listed in Table
1 (below).
The Airtec Kit is not equipped to monitor for oxygen deficiency. Nextteq LLC
recommends the use of a portable sample draw oxygen meter.
Table 2 (page 13) lists the data for Gastec Airtec Tubes included in the kit. Tube
packages contain detailed instruction sheets on the storage and use of the tubes, as well as
instructions on interpreting tube readings. Tubes are packaged ten per box, allowing ten
tests. Tubes may be used only once.
PACKING LIST SECTION II: Airtec Kit Components
WARNING
NOTE
TABLE 1
COMPRESSED GAS ASSOCIATION GRADE D STANDARDS
Gas/Substance Level Comments
Carbon Dioxide 1000 ppm Maximum level
Carbon Monoxide 10 ppm Maximum level
Oil Mist 5 mg/m
Oxygen 19.5 – 23.5%
Water Vapor --- Varies with use requirements
3
Maximum level
12 NEXTTEQ LLC (Rev. 2) 4/09
SECTION I: Introduction
SECTION I: Introduction SECTION I: Introduction
1.4 ACCURACY & CALIBRATION
The Airtec System when used in accordance with tube instructions provides an accuracy
of ±25%.
The flow meter is factory calibrated and should not require recalibration with normal use
and proper care of the unit.
Should a calibration check be required, the unit may be returned to the factory, or
calibration may be checked using a soap film bubble meter.
TABLE 2
AIRTEC TUBE DATA
Gas/
Substance
Carbon Monoxide 1A 5-50 ppm 100 3 20-90 Yellow to Dark Brown
Carbon Dioxide 2AG 200-3000 ppm 100 1.5 Pale Blue to Purple
Water Vapor 6AH 500-5000 ppm 300 1 Green to Purple
Water Vapor 6A 30-80 mg/m3 100 10 -- Yellow to Purple
Water Vapor 6AG 150-3000 mg/m3 300 1 -- Green to Purple
Nitrogen Oxides 11A 0.02-0.7
Oil Mist * 109AD 0.2-5.0 mg/m3 1000 20 Orange to Pale Blue
Part
No.
Measuring
Range
0.06-2
Flow
Rate
(cc/min)
100
100
Sample
Time
(Min)
5
2
Humidity
Range
(%RH)
White to Bluish Green
Color Change
* Oil Mist test may be run 1000 scc/min for 20 min as indicated in tube instructions.
Flow rates over 500 scc/min require a high range flow meter. However, Nextteq’s
Regulator has a maximum flow rate of 500 scc/min, so the oil mist tubes should run at a
500 scc/min for 40 minutes.
All tubes have a Temperature Range of 4-40°C.
13 NEXTTEQ LLC (Rev. 2) 4/09
SECTION I: Introduction
FIGURE 2
AIRTEC & BOTTLED AIR
14 NEXTTEQ LLC (Rev. 2) 4/09
SECTION I: Introduction
SECTION I: Introduction SECTION I: Introduction SECTION I: Introduction
FIGURE 3
AIRTEC & COMPRESSED AIR
15 NEXTTEQ LLC (Rev. 2) 4/09
SECTION II: Airtec Kit Components
_________________________________
2.1 REGULATOR
The regulator is a two-stage breathing air
regulator. It is preset at the factory to
deliver 50 psig to the flow meter. It is
precision-machined from solid brass
stock. Internal parts are protected by a
double filter system of sintered Monel
metal, backed by sintered bronze. A
preset safety device prevents
overloading.
The regulator has a maximum inlet pressure
of 3000 psig. Do not exceed maximum inlet
pressure. The regulator will not operate
properly if the inlet pressure drops below 50
psig. The preset delivery pressure of 50 psig
should not be altered. Above 60 psig, the
safety valve will vent off excess pressure to
prevent damage to the flow meter.
The Regulator specifications are shown in
Table 3 (below).
2.2 FLOWMETER
The flow meter is a ball and tube
assembly equipped with a metering
valve. The system is backpressure
compensated to maintain constant flow
when downstream pressure fluctuations
occur. It is calibrated for a delivery
pressure of 50 psig and for readings at
ITEM SPECIFICATION
Maximum Inlet Pressure 3000 psig
Outlet Pressure 50 psig preset
Inlet Gauge Range 0-4000 psi
Inlet Connection CGA 346 (CGA – 590 available)
SECTION I: Introduction
the center of the ball (refer to Figure 4,
page 17)
For maximum accuracy, the flow meter
should be mounted vertically. This may
be checked with a level, although setting
“by eye” is adequate. The flow meter
ball should float and rotate freely
throughout the length of the tube.
Warning
TABLE 3
REGULATOR SPECIFICATIONS
The flow meter is calibrated a 70°F
(21.1°C) and 50 psig for breathing air.
Caution
It is not suitable for use with other gases
and cannot be used with pure oxygen.
Read the flow meter at the center of the
ball. The flow meter is marked with
lines at 25 cc/min increments and
numbers at 100 cc/min increments.
Important
The flow meter is housed in a pressurized
cover tube. Cracks or leaks in the cover
tube will affect system accuracy. Leaks
between the flow meter and the tube holder
will result in low tube readings.
Flow meter specifications are shown in
Table 4 (page 17).
16 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST SECTION II: Airtec Kit Components
_______________________________________________________________________
2.3 TUBE HOLDER
The tube holder is designed to hold a Gastec detector tube leak-tight in series with the
regulator flow meter.
Important
Use only Gastec Airtec tubes. Other Gastec tubes are NOT calibrated for use with this
type of sample delivery. See Section 1.3 (page 12) for further information.
FIGURE 4
READING THE FLOWMETER
TABLE 4
FLOWMETER SPECIFICATIONS
Item Specifications
Range 100-500 scc/min
Delivery Pressure 50 psi (preset)
Backpressure Compensation Yes
Metering Value Integral with flow meter
17 NEXTTEQ LLC (Rev. 2) 4/09
SECTION III: Testing Procedure
3.1 INTRODUCTION
The Airtec kit is equipped with a CGA 346 fitting for breathing air bottles. This fitting is
specified by the compressed Gas Association to be used only for breathing air bottles.
The Airtec Kit may also be used for filtration and carbon monoxide removal devices, by
providing a quick disconnect near the respirator hookup. See Figure 3 (page 15). Refer to
section 3.3 (page 20) for details on monitoring compressor-supplied systems.
3.2 BOTTLED BREATHING AIR
The following test procedure should be followed when testing bottled breathing air.
1) Open the bottle valve momentarily to blow away any foreign material that may
have accumulated inside the connection.
2) Connect the regulator to the breathing air bottle and tighten it with an appropriate
wrench. (The fitting takes a 1-1/8” open-end wrench). The flow meter should be
mounted vertically for maximum accuracy. Close the adjustment knob by turning
it fully clockwise (do not over tighten), then open it 2 turns counterclockwise.
Do not over tighten the regulator fitting. Severe over tightening will cause distortion of
the threads and/or seating surface.
3) Open the bottle valve completely and read the gauge pressure on the regulator.
The pressure should be no less than 150 psig and no more than 3000 psig.
4) Adjust the flow meter needle valve momentarily to assure the flow meter ball
move freely throughout the entire length of the tube. Shut off flow meter valve
(turn it counter-clockwise to open and clockwise to close).
Do not over tighten the flow meter needle valve. Over tightening will damage the fine
internal threads and sensitive metering seat! The needle valve NEVER needs to be closed
tightly.
PACKING LIST SECTION II: Airtec Kit Components
Warning
Warning
18 NEXTTEQ LLC (Rev. 2) 4/09
SECTION III: Testing Procedure
PACKING LIST SECTION II: Airtec Kit Components
5) Break the end off of a fresh tube and install it in the tube holder. Note the
directional arrow. Hold the tube holder in place with your free hand during
stretching. The arrow should point away from the flow meter (or downward in
the normal configuration). The tube is installed by first inserting the upper end
into the holder then stretching the holder over the lower end of the tube.
Warning
Avoid cuts from broken tubes during this operation.
Caution
Excessive stretching of the tube holder will shorten the useful life of the tube holder.
Take care to install the tube with minimal stretching of the holder.
6) Set the flow rate and start timing the sample as quickly and smoothly as possible.
This may seem difficult at first, but smoothness will come with experience. Start
with a 1-minute test (H2O) first. See table 2 (page 13). Read the center of the
ball.
7) At the end of the time period, immediately read the tube and record the results.
Repeat with the other tubes until all of the desired contaminants have been
monitored. Consult your tube instructions for details on sample time flow rate.
See Section 5.1 (page 22) for tips on sampling.
8) Close the valve on the air bottle and open the flow meter valve to bleed residual
pressure off the Airtec system. Be sure the pressure is completely removed.
9) Disconnect the Airtec regulator/flow meter system and store in a clean dry place.
Do not leave it in the field.
Warning
Do not attempt to remove the Airtec regulator from a breathing air source while the
regulator is under source pressure!
Important
Some bottled breathing air is prepared by blending liquid N2 and liquid O2 at 79% and
21% respectively. Oxygen content should be monitored when this type of breathing air is
used. Nextteq LLC recommends the use of an oxygen tube with pump and sampling bag.
Warning
The Airtec system should be checked for leaks on a routine basis. This may be done by
applying soap solution around the connections. The critical area to check is between the
flow meter and the tube holder. See Section 4.1 (page 21).
19 NEXTTEQ LLC (Rev. 2) 4/09
SECTION III: Testing Procedure
________________________________________________________________________
3.3 COMPRESSOR SYSTEMS
The Airtec Kit may also be used for monitoring compressed breathing air systems. See
Figure 3 (page 15). The Airtec System should be placed as close as possible to the
respirator hookup. The line pressure must be above 50 psig in order for the flow meter to
work properly. The test procedure is the same as that for bottled air outlined in Section
3.2 (page 18).
To use the Airtec System with a compressed air system, prepare an adapter as outlined
below in a or b.
a) In the sample line near the respirator hookup install a valve and a CGA 346
connection. The connection may be obtained from your local compressed gas
supplier. It is the type used on breathing air bottles.
b) Prepare a quick disconnect adapter in the following manner. Obtain a CGA 346
bottle connection from your local compressed gas supplier. Attach it in a leaktight manner to a quick disconnect fitting from one of your respirators. Your
Airtec System may now be connected directly into your respirator hookup.
Take precautions against water entry into the regulator. Use line pressure to blow the connector
out prior to regulator hookup.
Be sure that the weight of the Airtec regulator/flow meter is properly supported during testing.
Be sure that the adapters are leak tight and capable of handling line pressure.
Federal Register 29 CFR Part 1910.134 (d) (2) (ii) states that breathing air systems employing
an oil-lubricated compressor must employ a carbon monoxide alarm, a high temperature alarm,
or both. The Airtec System does NOT substitute for a CO or a high temperature alarm. (If only a
high temperature alarm is used, frequent CO testing is required. The Airtec System is suitable
for such testing.)
Filtration systems utilized in purifying air from oil-lubricated compressors employ a
catalyst to convert CO to CO
a) The catalyst is ruined if contacted by water and will no longer be effective.
b) If CO levels increase sharply between tests, this could be an indication of CO
intrusion or production in the compressor.
Most CO intrusion into compressed breathing air systems is caused by a CO source near the
compressor inlet. Never operate motorized vehicles near the inlet of a breathing air compressor!
PACKING LIST SECTION II: Airtec Kit Components
Warnings
. Note the following items:
2
Warning
20 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST SECTION IV: Maintenance & Troubleshooting
4.1 TESTING FOR LEAKS
The Airtec System will provide maximum accuracy only if the system is leak free. Test
for leaks by applying a soap solution to system connections while the unit is under
normal operating pressure. If a leak is detected, tighten the fitting slightly and retest.
Repeat until the leak is stopped.
Warning
Do not over tighten connections. Return unit to factory if leaks persist.
Below is a list of potential leak sites that would have a direct effect on tube accuracy.
• Tube holder fitting
• Regulator/flow meter fitting
• Flow meter needle valve
• Flow meter cover tube
Leaks upstream (e.g. regulator fitting) although undesirable should not affect system
accuracy.
Note
Following leak checks allow 500 cc/min to flow through the flow meter for 10 minutes to
remove any moisture accumulation.
Note
Leak checks should be run 500 cc/min with a used tube in place (use tube #109AD).
4.2 EQUIPMENT FAILURE
In the event of failure of the regulator or flow meter return the unit to Nextteq LLC for
servicing. Do not attempt to repair either the regulator or the flow meter. For
information on equipment returns, see Appendix B: Returned Material Authorization
(page 24).
21 NEXTTEQ LLC (Rev. 2) 4/09
SECTION V: Sampling Tips
Tips for Tube Reading
The following items will be helpful when reading and interpreting the Airtec detector
tubes.
1.) Always read the tubes and record the results immediately after testing. In some
cases stains may fade or “crawl” within a few hours.
2.) A tube may never be reused, even after a zero reading.
3.) The oil mist tube is normally used at 500 scc/min for 40 minutes. However,
reliable results can be obtained using shorter sampling periods and correcting the
reading with a multiplication factor (see below):
Test Duration Multiply Reading By
20 minutes 2
4.) If at the end of a test you note that the stain has overshot the scale, the actual
PACKING LIST SECTION IV: Maintenance & Troubleshooting
concentration may be determined as follows:
a) Repeat the test with a new tube and observe the time required to reach the
highest calibration mark (full scale).
b) Multiply the full-scale concentration by the ratio of the recommended test
time to the actual test time.
Example
H2O tube reaches full scale (80 mg/m3) in 36 seconds. Recommended
time is 1 minute.
Ratio = 1 min/0.6 mins. = 1.66
Thus, the actual concentration is
80 x 1.66 = 133 mg/m3
22 NEXTTEQ LLC (Rev. 2) 4/09
SECTION V: Sampling Tips
5.) Excessive water vapor (i.e., >3 mg/l of H
tube (PN 109AD) to stain yellow although the reading will not be affected. Run
the water vapor test before running the oil mist test. The recommended testing
priority is listed below.
st
…..H2O
1
nd
2
rd
3
th
4
6.) The proper stain color for oil mist tube is dark brown. Other color changes
should be disregarded.
PACKING LIST SECTION II: Airtec Kit Components
O) may cause the reagent in the oil mist
2
….CO2
…..CO
…..Oil Mist
7.) Moisture intrusion in the oil mist tube (PN 109AD) causes a bleaching of the
reagent (see #5 above). If a stain is obtained on oil mist tube and a bleaching has
occurred around the zero, read the stain and ignore the bleaching.
8.) The H20 tube (PN 6A) responds to water vapor with either a green or a purple
Stain. The green color merely signifies the presence of water vapor. It is not
related to the concentration and should be ignored. Read only the purple stain.
9.) The reading on the H2O tube should be recorded immediately. When the tube is
removed it will continue to respond to ambient moisture. Similarly, place the
tube in the holder as soon as possible after the ends have been broken.
10.) Always pay strict attention to the instruction sheets provided in the tube boxes.
Detector tubes have limits on temperature and humidity.
11.) Accuracy in detector tube testing is ±25%
23 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST SECTION IV: Maintenance & Troubleshooting
Appendices
Parts List
Part Number Item/Description
STD-300 Airtec Kit
357 Tube Holder
STD-300-M Airtec Manual
STD-300-1 Hard Shell Case (For Deluxe Airtec Kit)
1A Carbon Monoxide Detector Tube
2AG Carbon Dioxide Detector Tube
6A Water Vapor Detector Tube
6AG Water Vapor High Range Detector Tube
109AD Oil Mist Detector Tube
Returned Material Authorization
Nextteq LLC maintains an instrument service facility at the factory to provide its
customers with both warranty and non-warranty repair service. Nextteq LLC, assumes
no liability for service performed by personnel other than Nextteq personnel. To
facilitate the repair process, please contact the Nextteq Customer Service Department for
assistance with problems, which cannot be remedied on site. All returned products
require a Returned Material Authorization (RMA) number prior to returning product to
the factory. Nextteq LLC customer service personnel may be reached at:
Nextteq LLC
8406 Benjamin Rd., Suite J
Tampa, FL 33634
(813) 249-5888; (877) 312-2333
Fax (813) 249-0188; (877) 312-2444
All non-warranty repair orders will have a minimum fee whether the repair is authorized
or not. This fee includes handling, administration and technical expenses for inspecting
the instrument and providing an estimate. However, the estimate fee is waived if the
repair is authorized.
24 NEXTTEQ LLC (Rev. 2) 4/09
PACKING LIST SECTION IV: Maintenance & Troubleshooting
If you wish to set a limit to the authorized repair cost, state a “not to exceed” figure on
your purchase order. Please indicate if a price quotation is required before authorization
of the repair cost, understanding that this invokes extra cost and handling delay. Nextteq
LLC’s repair policy is to perform all needed repairs to restore the instrument to its full
operating condition.
Repairs are handled on a “first in-first out” basis. Your order may be expedited if you
authorize an expediting fee. This will place your order next in line behind orders
currently in process.
Pack the instrument and its accessories (preferably in its original packing) and enclose
your return address, purchase order, shipping and billing information, RMA#, a
description of the problem encountered with your instrument and any special instructions.
Appendices
All prices are subject to change without notice.
If this is the first time you a dealing directly with the factory, you will be asked to prepay
or authorize a COD shipment.
Send the instrument, prepaid, to:
Nextteq LLC
8406 Benjamin Rd., Suite J
Tampa, FL 33634
Attention: Customer Service Department
RMA: ________________
Service Options
The Nextteq LLC Service Department offers you a variety of service options that will help to increase your
user confidence while minimizing costly interruption s and mainten ance costs. Th ese options in clude in itial
training, on-site technical assistance, and full factory repairs. Nextteq LLC has developed several programs
that will allow you to select just the right options that are best suited to your applications an d needs. For
further information, contact the Nextteq LLC Service Department.
25 NEXTTEQ LLC (Rev. 2) 4/09
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