MSA Legend Series User manual

Operating Manual
Legend Series Automotive Refrigerant Analyzer
Bacharach
Manual Part No.: 5-06-7000-80-0
Manual File: 012476 Rev. B
MSAsafety.com US

© MSA 2022. All rights reserved
WARNING!
Read this manual carefully before using or maintaining the device. The device will perform as designed only if it is used and
maintained in accordance with the manufacturer's instructions. Otherwise, it could fail to perform as designed, and persons
who rely on this device could sustain serious injury or death.
The warranties made by Bacharach with respect to the product are voided if the product is not installed and used in accordance
with the instructions in this manual. Please protect yourself and your employees by following the instructions.
Please read and observe the WARNINGS and CAUTIONS inside. For additional information relative to use or repair, call 1-
610-524-8800 during regular working hours.
MSA is a registered trademark of MSA Technology, LLC in the US, Europe and other Countries. For all other trademarks visit
https://us.msasafety.com/Trademarks.
MSA - The Safety Company
456 Creamery Way
Exton, PA 19341
USA
1-610-524-8800
For your local MSA contacts, please go to our website www.MSAsafety.com

US Legend Series Refrigerant Analyzer 3
Contents
1 Warranty 4
1.1 Exclusive Remedy 4
1.2 Exclusion of Consequential Damage 4
1.3 Liability Information 4
2 Warnings and Cautions 5
2.1 Analyzer Warnings 5
2.2 General Cautions 5
2.3 General Notices 6
3 Introduction and Overview 6
3.1 Features 7
3.2 Legend Series Automotive Components 7
4 Operation 12
4.1 First Use 12
4.2 Power On the Analyzer 12
4.3 Calibration 13
4.4 Testing the Refrigerant 13
4.5 Viewing the Results 14
4.6 Understanding Test Results 15
5 Maintenance and Troubleshooting 17
5.1 Replacing the Sample Hose Assembly 17
5.2 Information Screens 17
5.3 Software Updates 17
5.4 Settings 17
5.5 Error Messages 18
Appendix A Spare Parts List 20
Appendix B Specifications 21

4 Legend Series Refrigerant Analyzer US
1 Warranty
1 Warranty
MSA, the Safety Company warrants that these products will be free from mechanical defect or faulty workmanship for a
period of one (1) year from the date of delivery, provided it is maintained and used in accordance with MSA's instructions
and/or recommendations.
This warranty does not apply to expendable or consumable parts whose normal life expectancy is less than one (1) year,
such as, but not limited to, nonrechargeable batteries, filament units, filter, lamps, fuses, etc. MSA shall be released from
all obligations under this warranty in the event that repairs or modifications are made by persons other than its own or
authorized service personnel or if the warranty claim results from physical abuse or misuse of the product. No agent,
employee, or representative of MSA has any authority to bind MSA to any affirmation, representation, or warranty
concerning the goods sold under this contract. MSA makes no warranty concerning components or accessories not
manufactured by MSA, but will pass on to the Purchaser all warranties of manufacturers of such components.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, AND IS
STRICTLY LIMITED TO THE TERMS HEREOF. SELLER SPECIFICALLY DISCLAIMS ANY WARRANTY OF
MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE.
1.1 Exclusive Remedy
It is expressly agreed that the Purchaser's sole and exclusive remedy for breach of the above warranty, for any tortious
conduct of the Seller, or for any other cause of action, shall be the repair and/or replacement at the Seller's option of any
equipment or parts thereof, which after examination by the Seller is proven to be defective. Replacement equipment and/or
parts will be provided at no cost to the Purchaser, F.O.B.;Seller's Plant. Failure of the Seller to successfully repair any
nonconforming product shall not cause the remedy established hereby to fail of its essential purpose.
1.2 Exclusion of Consequential Damage
The Purchaser specifically understands and agrees that under no circumstances will the Seller be liable to the Purchaser
for economic, special, incidental, or consequential damages or losses of any kind whatsoever, including but not limited to,
loss of anticipated profits and any other loss caused by reason of nonoperation of the goods. This exclusion is applicable to
claims for breach of warranty, tortious conduct, or any other cause of action against the Seller.
1.3 Liability Information
MSA accepts no liability in cases where the device has been used inappropriately or not as intended. The selection and
use of the device are the exclusive responsibility of the individual operator. Product liability claims, warranties, and
guarantees made by MSA with respect to the device are voided if the device is not operated, serviced, and/or maintained in
accordance with the instructions in this manual.
The warranties made by MSA with respect to the product are voided if the product is not used and serviced in accordance
with the instructions in this manual. Please protect yourself and others by following them. We encourage our customers to
write or call regarding this equipment prior to use or for any additional information relative to use or repairs.

2 Warnings and Cautions
US Legend Series Refrigerant Analyzer 5
2 Warnings and Cautions
The Legend Series Automotive, hereafter also referred to as "the device," is a gas analyzer intended to provide a fast,
easy, and accurate means to determine refrigerant purity in refrigerant storage cylinders or directly in air conditioning
systems. The device is specified to support compliance with federal, state, and local safety codes that govern emissions.
2.1 Analyzer Warnings
WARNING!
• Install, operate, and maintain the device in strict accordance with its labels, cautions, warnings, instructions, and
stated limitations.
• For any maintenance procedure provided in this manual, use only genuine Neutronics replacement parts. Repair or
alteration of the device beyond the scope of these maintenance instructions or by anyone other than authorized
service personnel can cause incorrect operation of the device. For a list of approved parts and how to order them,
refer to the Spare Parts List.
• Never expose the device to water, rain or liquids when charging.
• The device is not intrinsically safe. Do not use the device in areas classified as hazardous or locations where
explosive concentrations of combustible gases or vapors can occur.
• Never admit any sample into the instrument at pressures in excess of 500 psig. Pressures above 500 psig can lead
to damage within the device and create a bursting hazard.
• Some vehicles may contain flammable refrigerants such as hydrocarbons. R-1234yf is considered a flammable
substance. Less than 2 grams of refrigerant are vented with each sample.
• When charging the internal battery with the supplied power supply, the power supply may become warm. If the power
supply becomes warm, unplug the cord immediately. When charging multiple devices, allow the charger to cool
between each battery.
• Do not utilize any hose(s) other than the MSABacharach hose supplied with the instrument. The use of other hose
types will introduce errors into the refrigerant analysis and instrument calibration.
• If the device is used in a manner not specified by the manufacturer, the protection by the device may be impaired.
• Properly vent the exhaust of the device to a safe area. Improper venting of the exhaust can cause serious personal
injury or death.
• Always turn the compressor or automobile engine off before connecting the instrument to an air conditioning system.
Failure to follow these warnings can result in serious personal injury or death.
2.2 General Cautions
CAUTION!
• Always wear eye and skin protection when working with refrigerants. Escaping refrigerant vapors will present a
freezing danger. Do not direct refrigerant escaping from the sample hose toward exposed skin or toward the face.
• Do not direct refrigerant vapors venting from hoses towards the skin. Refrigerant can cause serious burns if in
contact with the skin.
• Do not breathe refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose, and throat. Use recycling
equipment certified to meet the requirements of SAE J2788, J2843, J3030 or J2851 to remove refrigerant from the
A/C system. If accidental system discharge occurs, immediately ventilate the work area. There must be adequate
ventilation in the vehicle servicing area.
• Do not utilize the coupler on the service end of the Sample Hoses for any application other than with the instrument.
The coupler supplied is a modified version that does not contain a check valve and is not suitable for any other
refrigerant application.
Failure to follow these cautions can result in minor or moderate injury.

6 Legend Series Refrigerant Analyzer US
3 Introduction and Overview
2.3 General Notices
NOTICE
• Operate this device with vehicles or cylinders marked to contain R-1234yf, R-134a or R-12 refrigerant. Cross
contamination with other refrigerant types causes severe damage to the A/C system, to service tools, and
equipment. Do NOT attempt to adapt the unit for another refrigerant. Do NOT mix refrigerant types in a system or in
the same container.
• Always inspect the sample hose before each use. Replace the hose if it appears cracked, frayed, obstructed or
fouled with oil.
• Replace the sample hose AS SOON AS LIQUID, OIL OR RED SPOTS (DISCOLORATION) BEGIN TO APPEAR
ON THE INSIDE DIAMETER OF THE SAMPLE HOSE OR WHITE FILTER ELEMENT. Failure to properly maintain
and replace the sample hose will result in severe damage or inaccurate results.
○ DO NOT attempt to introduce liquid or samples heavily laden with oil into the Low Side sampling hose
configuration. Damage caused to the device due to the use of the wrong hose configuration on the wrong port
will void the warranty.
• The air detection sensor is a chemical fuel cell sensor that can expire. The user must return the unit to an approved
vendor in order to replace the air detection sensor whenever the instrument indicates as such. Failure to replace the
air detection sensor will result in non-functionality of the device.
• Connection to power sources greater than 13 VDC could cause “out of warranty” damage.
• Avoid use of the device where condensation can collect. Condensation can clog or block sample lines, which will
prevent the device from receiving new or fresh gas samples in the area being monitored.
• Install and maintain end-of-line filters in all sample inlet lines.
• To ensure correct overall operation of a gas detection instrument, test a known virgin sample of gas for which it was
calibrated. Do a calibration check prior to each use.
• Do not disassemble the instrument. There are no serviceable components internal to the instrument and
disassembly will void the warranty.
• Always place the analyzer on a flat and sturdy surface.
• Always verify that the refrigerant, tested from the Low Side, does not contain or will not emit heavy loads of oil or
liquid. Heavy loads of oil or liquid can enter the device and cause it to become inoperable.
• Never obstruct the air intake, sample exhaust or case vent ports of the instrument during use. Obstruction can lead to
calibration faults or operational errors in the device.
3 Introduction and Overview
Thank you for purchasing the Legend SeriesAutomotive Refrigerant Analyzer.
The Legend Series Automotive Refrigerant Analyzer is designed for use independently or in conjunction with an SAE
J2843 or J3030 approved A/C Service Machine to determine the purity of gaseous R-134a or R- 1234yf refrigerant. We
recommend that all personnel who use this instrument read this manual to become more familiar with its proper operation.
General
Contamination of refrigerants either in storage cylinders or vehicle air conditioning systems can lead to component
corrosion, elevated head pressures and system failures when utilized by unsuspecting technicians. The ability of the
technician to determine refrigerant type and purity is severely hampered by the presence of air when attempting to utilize
temperature-pressure relations. The development of various substitute refrigerants further complicates the ability of a
technician to identify refrigerant purity based upon temperature-pressure relationships.
The Neutronics Legend Series Automotive Refrigerant Analyzer will provide refrigerant purity in refrigerant storage
cylinders or directly in vehicle air conditioning systems. The instrument utilizes non-dispersive infrared (NDIR) technology
to determine the weight concentration of R-1234yf or R-134a refrigerant. Acceptable refrigerant purity as it relates to this
instrument, has been defined by the SAE as a refrigerant mixture that contains 98.0%, or greater of R-1234yf or R-134a, by
weight.

3 Introduction and Overview
US Legend Series Refrigerant Analyzer 7
The instrument is supplied complete with an R-1234yf sample hose, an R-134a sample hose (R-12 coupler sold
separately), a 100- 240 VAC power transformer, built in Lithium battery, thermal printer, and all required plumbing housed
within a rugged, portable, storage case.
Sample gas is admitted into the instrument through the supplied sample hose and presented to the sensing device. The
instrument provides the user with a digital display of refrigerant purity. The instrument only considers the weights of the
refrigerant and contaminates in the total mixture. Air is measured, and displayed, separately. Other contents such as
refrigerant oil and dye are not considered contaminants.
The instrument interfaces with the user via a full color graphic LCD, audio indications and soft key command buttons.
Alarm indications are provided to alert of instrument fault conditions or contaminated refrigerant presence.
Required SAE Statement (SAE J2912): "If the refrigerant being tested is identified as contaminated (i.e., less than 98%
pure R-1234yf or HFC-134a), any visual percentages displayed of HFC-134a (R-134a) and/or HFO-1234yf (R-1234yf),
outside the design certified value is informational and may not be accurate."
3.1 Features
Features include:
• Advanced ergonomic design
• Displays % purity:
○ R-1234yf
○ R-134a
○ R-12
• Displays %:
○ R-22
○ Unknown Refrigerant
○ Hydrocarbons
• Displays AIR % independent of the refrigerant sampled
• Capable of analyzing R-12 (1/4” Flare coupler sold separately)
• Multiple Languages:
○ English, German, Spanish, French, Italian, Portuguese, Chinese, Japanese, Korean and Russian
• Easily prints test results with built-in printer (optional)
• Uses Standard 2.25” (57 mm) thermal paper
• Bluetooth compatible (optional)
• Improved oil resistance with user replaceable hose assembly
• Fender friendly resting surface
• Full Color Graphic LCD with on-screen instructions
• Ultra-fast 70 second test time
• Internal, rechargeable Lithium battery for cordless operation
• USB Port for connection to the AC Service Machine & remote software updates
• All accessories stored in hard shell carry/storage case
3.2 Legend Series Automotive Components
Legend Series Automotive Base Unit
The Legend Series Automotive base unit houses the Full Color Graphic LCD, Infrared Bench, Electrical Connections, and
Rechargeable Battery. These components require no maintenance, therefore there are no serviceable components
internal to the instrument, and disassembly will void the warranty.

8 Legend Series Refrigerant Analyzer US
3 Introduction and Overview
Legend R-1234yf Sample Hose
The 6.5-foot (2 meter) R-1234yf Sample Hose is constructed of polyurethane ether. The hose is provided with an
instrument inlet port mating connector on one end and a brass flow restrictor on the other end. The brass flow restrictor
screws into the R-1234yf Low Side Coupler. The sample hose is considered a consumable maintenance part. A spare R-
1234yf Sample Hose is also provided.
Legend R-134a Sample Hose
The 6.5-foot (2 meter) R-134a Sample Hose is constructed of polyurethane ether. The hose is provided with an instrument
inlet port mating connector on one end and a brass flow restrictor on the other end. The brass flow restrictor screws into the
R-134a Low Side Coupler. The sample hose is considered a consumable maintenance part. A spare R-134a Sample Hose
is also provided.
Sample Hose Extensions
The sample hose extensions allow the user to easily connect and disconnect the hose assembly to the analyzer. The
extension is connected directly to the analyzer and the sample hose connects to the male feral on the opposite end.

3 Introduction and Overview
US Legend Series Refrigerant Analyzer 9
R-1234yf Low Side Coupler
The R-1234yf low side coupler is designed with a quick connect adapter to quickly connect the hose assembly to the Low
Side Schrader valve on a R-1234yf vehicle.
R-134a Low Side Coupler
The R-134a low side coupler is designed with a quick connect adapter to quickly connect the hose assembly to the Low
Side Schrader valve on a R-134a vehicle.
USBCord
The USB Cord is provided to connect the refrigerant analyzer with an SAE J2843 or J3030 approved A/C Service Machine.
If connecting to an approved A/C service machine follow the instructions on this machine to operate the refrigerant
analyzer.
R-1234yf Tank Adapter Fitting
The R-1234yf Tank Adapter Fitting will provide the user with an adapter to allow connection of the R-1234yf Sample Hose
to the ½” LH Acme threads on the R-1234yf cylinder.

10 Legend Series Refrigerant Analyzer US
3 Introduction and Overview
R-134a Tank Adapter Fitting
The R-134a Tank Adapter Fitting will provide the user with an adapter to allow connection of the R-134a Sample Hose and
Low Side Coupler to a R-134a cylinder ACME port.
ACPower Adapter
The Legend Series Automotive is powered via a Lithium Ion battery. You can also power the unit with the AC Power
Adapter which converts a standard 100-240VAC 50/60Hz wall outlet to 12VDC, 1.6A. This AC Power Adapter will also
charge the battery when connected to the analyzer.
NOTE: Use of any other power source may cause damage to the unit and void the warranty.
Control Panel
The Control Panel serves as the main user interface. The Control Panel features three soft key buttons. The current
function for each button is displayed above the Soft Key Buttons on the full color graphic LCD. A Home button and a Power
button are also found at the top of the control panel.

3 Introduction and Overview
US Legend Series Refrigerant Analyzer 11
Back Panel Connections
The connections located on the back panel are illustrated below.
CAUTION!
Keep the sample outlet port free and clear at all times. Do not operate near open flame.
Failure to follow this caution can result in minor or moderate injury.
Hard-Shell Storage/Carrying Case
The hard-shell storage/carrying case is custom fit to the Legend Series Automotive. It provides rugged protection for the
instrument, as well as convenient storage for all components. The enclosure is general purpose and is not watertight.

12 Legend Series Refrigerant Analyzer US
4 Operation
4 Operation
4.1 First Use
The Legend Series Automotive has a built in Lithium Ion battery. Prior to first use charge the battery for a minimum of 2
hours with the included AC Power Supply. The analyzer will function and charge the battery when the AC Power Supply is
connected.
4.2 Power On the Analyzer
For use with an SAE J2843 or J3030 certified AC Service Machine, connect one end of the provided USB cable to the USB
port on the back of the analyzer and connect the other end of the USB cable to the AC Service Machine.
NOTE: If the unit is used as an independent device the USB cable should not be connected.
Press the upper right, ‘POWER’ button and the splash screen shown in (Figure 1) will appear. Press ‘Next’ and the device
will warm up as shown in (Figure 2). Warm up will take approximately 30 seconds.
Figure 1 Splash Screen
Figure 2 Warm Up Screen
Once the analyzer warms up, the screen in (Figure 3) will appear offering the option to change settings or start an analysis.
If you wish to adjust factory ‘Settings’, select the left soft key and refer to Maintenance and Troubleshooting. To begin an
analysis, select the right ‘Start’ soft key. Next select the type of refrigerant you wish to test (Figure 4).
NOTE: If you are going to analyze a R-12 vehicle or cylinder you must select R-134a mode.
Figure 3 Main Screen

4 Operation
US Legend Series Refrigerant Analyzer 13
Figure 4 Select Refrigerant
4.3 Calibration
Each time the Legend Series Automotive begins a new test cycle it must complete an air calibration. The calibration takes
30 seconds and pulls fresh air into the unit via an internal pump. This fresh air purges any excess refrigerant from the unit
to promote accurate test results. Calibration REQUIRES a sample hose be connected to the device and disconnected from
the vehicle or refrigerant source.
Once the sample hose is connected to the analyzer, press ‘Start’ to begin an air calibration, as shown in (Figure 5). This will
begin the calibration process and display the screen shown in (Figure 6).
Figure 5 Press Start to BeginAir Calibration
Figure 6 Calibrating
4.4 Testing the Refrigerant
After the air calibration is complete, the instrument is ready for testing. The analyzer will direct you to connect the hose to a
refrigerant source as shown in (Figure 7). Connect the hose to the vehicles Low Side Schrader valve, or connect it to the
Low Side Port on a refrigerant cylinder, and open the valve. Allow the refrigerant to flow for a few seconds and then press
the ‘Test’ button to begin the test. The Testing screen shown in (Figure 8) will display.

14 Legend Series Refrigerant Analyzer US
4 Operation
Figure 7 Connect toSource
Figure 8 Testing Screen
4.5 Viewing the Results
Upon completion of testing, the Legend Series Automotive will display (Figure 9). Disconnect the coupler from the
refrigerant source and select ‘Results’ to display the test results (Figure 10). The percentage displayed for each refrigerant
indicates the total purity weight of that refrigerant, equaling 100%, with air and non-condensable gases measured
independently. Pressing ‘Print’ will print the test results. Pressing ‘Print Prior 5 Results’ will print the last 5 tests completed.
Figure 9 Disconnect from Source
Figure 10 Test Results

4 Operation
US Legend Series Refrigerant Analyzer 15
If the refrigerant analyzed is 98.0% pure or better, the refrigerant is deemed suitable for standard recovery and reuse.
Should the refrigerant be less than 98.0% pure, the refrigerant is not suitable for standard recovery and should not be
reused. In either case, verify the hose is disconnected from the refrigerant source and press ‘Exit’ to return to the main
screen (Figure 11).
Figure 11 Main Screen
NOTE: In R-134a mode, R-12 and R-1234yf are combined into one reading referred to as “R-12/ R-1234yf.”
4.6 Understanding Test Results
The Legend Series Automotive is designed to analyze the base gas it is calibrated for. When testing R- 134a vehicle, R-
134a should be select as shown on (Figure 12). Conversely when testing a R-1234yf vehicle, R-1234yf should be selected
as shown in (Figure 13). If the wrong base refrigerant is selected the analyzer will fail the test and produce inaccurate
results.
Figure 12 R-134a Selected
Figure 13 R-1234yf Selected
The refrigerant analyzer is designed to provide visual cues after analysis is complete. When the refrigerant sampled is
found to be 98% pure or greater the analyzer will display a Green background indicator (Figure 14).

16 Legend Series Refrigerant Analyzer US
4 Operation
Figure 14 Refrigerant Sampled is ≥ 98%Pure
Figure 15 Refrigerant Sampled is 95% - 98%Pure
When the sampled refrigerant is found to be between 95% - 98% pure a Yellow background indicator will appear (Figure
15).
When the sampled refrigerant is found to be less than 95%, presents hydrocarbons or a has large contamination the
screen will illuminate Red and CAUTION SHOULD BE TAKEN WHEN HANDLING THIS VEHICLE OR CYLINDER (Figure
16).
Figure 16 Refrigerant Sampled is < 95% Pure
It is important to note AIR is measured independently of the refrigerant. This means you could have a percentage of AIR
present in a sample or refrigerant that totals or equals 100% refrigerant. An example of this is present in (Figure 17) below.
Figure 17 Percentage of Air Present

5 Maintenance and Troubleshooting
US Legend Series Refrigerant Analyzer 17
If an error message appears at all during or after analysis, refer to Maintenance and Troubleshooting.
5 Maintenance and Troubleshooting
5.1 Replacing the Sample Hose Assembly
In the event the analyzer displays an Error #3 or Error #5 this may be an indication the sample hose needs replacing. This
will occur when the integrated flow restrictor becomes clogged with oil, debris or sealant. It can also occur if there is
inadequate flow, less than 30 psig (2 Bar) refrigerant in the vehicle or cylinder. Replacement hoses for both the R-134a and
R-1234yf couplers are provided in the kit. Additional replacements are listed in the Spare Parts List.
To replace the Sample Hose Assembly:
1. Disconnect the sample hose from the refrigerant and analyzer
2. Remove the brass restrictor end (with hose attached) from the coupler and discard. Be sure to use a backing wrench
as not to damage the coupler.
3. Check for signs of oil and debris in the coupler.
4. Use a cleaner which ONLY contains Tetrachloroethylene and carbon dioxide, follow safety instructions on the can
and spray all parts of the coupler with the cleaner to remove any oil. DO NOT soak the part for more than 60 seconds.
5. Allow coupler to dry. Check coupler for oil once again. Failure to clean the oil out of the coupler will result in
premature obstruction of the new sample hose.
6. Install the brass end of the new sample hose assembly into the coupler and lightly tighten, usually finger tight is
sufficient.
5.2 Information Screens
An “Information” icon or ‘Help’ indication will appear at various points throughout the testing process. This button will
provide additional information or tips about the command screens to help complete your analysis.
5.3 Software Updates
Software updates may be made available to improve operating performance or add additional features. Some updates will
be provided at no charge to improve operating efficiencies while others will be optional, paid upgrades, to add new
refrigerants or functions.
The Legend Series Automotive has a USB update port located on the Back-Panel Connections. This port should not be
used for any other purpose other than to install factory updates or when connecting to a certified service cart.
NOTICE
If the analyzer is not registered, Neutronics will not be able to inform you of any necessary software updates.
5.4 Settings
Pressing the ‘Settings’ button as shown in (Figure 18) will provide access to various device settings as shown in (Figure
19).
Figure 18 Main Screen

18 Legend Series Refrigerant Analyzer US
5 Maintenance and Troubleshooting
Figure 19 Settings Screen
Using the ‘Next’ button, scroll to the desired setting you wish to change.
Use the button to select the setting and the left button to return to the previous screen.
•Brightness: Enhances or dims the brightness of the LCD screen.
•Language: Change the language to one of 10 available languages.
○English (default)
○ German
○ Spanish
○ French
○ Italian
○ Portuguese
○ Chinese
○ Japanese
○ Korean
○ Russian
•Sound: Turn sound ONor OFF.
•Printer: Information on how to load the printer paper.
When finished adjusting the settings, press ‘Exit’ to return to the home screen.
5.5 Error Messages
In the unlikely event an Error message is displayed on the screen, follow the on-screen prompt associated to the Error.
Error messages that will appear include:
Error #1:The air or gas readings were unstable.
○ Solution: Move the unit away from sources of EMF or RFI such as radio transmitters and arc welders.
Error #2:The air or gas readings were excessively high.
○ Solution: Move the unit away from sources of EMF or RFI such as radio transmitters and arc welders.
Error #3: The air calibration resulted in a low output.
○ Solution: Prevent refrigerant from flowing into the unit through the sample inlet during air calibration.
○ Solution: Allow any refrigerant in the atmosphere to dissipate before performing air calibration.
○ Solution: Verify that the air intake and the exhaust are not obstructed.
○ Solution: Verify that the white filter is correctly plugged into the rubber grommets.

5 Maintenance and Troubleshooting
US Legend Series Refrigerant Analyzer 19
Error #4:The unit is beyond the operating temperature range.
○ Solution: Move the unit to an area where the ambient temperature is within the specified operating range.
Error #5:The refrigerant sampled has an excessively large amount of air or there was a little or no sample flow due to a
closed valve or plugged sample filter. This is the code to prompt the user to change the brass filter. This should be
considered more as a prompt than an actual error.
○ Solution: Verify the coupler valve is open.
○ Solution: Verify the sample filter is not plugged with debris or oil.
○ Solution: Replace brass sample filter.
Error #6: The air sensor has expired and must be replaced before the analyzer can be used.
Error #7: The gas pressure is out of range.
○ Solution: Verify the SAMPLE EXHAUST port is not obstructed.
If an Error message reappears, contact Neutronics or your local service department.

20 Legend Series Refrigerant Analyzer US
Appendix A Spare Parts List
Appendix A Spare Parts List
Part Number Description
4-03-5004-07-0 R-134a Tank Adapter
4-04-5500-00-6 R-12 Low Side Coupler
5-03-1000-08-1 Printer Paper Roll
5-06-7000-80-0 Operating Manual
6-01-6000-74-0 AC Power Supply
6-02-6001-37-0 R-1234yf Tank Adapter
6-02-6001-42-0 Legend R-134a Replacement Hose
6-02-6001-43-0 Legend R-1234yf Replacement Hose
6-02-6001-56-0 Legend R-134a Hose Kit
6-02-6001-57-0 Legend R-1234yf Hose Kit