yellow jacket 37865 User manual

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(P/N 37865)

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Table of Contents
1INTRODUCTION AND OVERVIEW ............................................. 5
1.1 GENERAL ............................................................. 5
1.2 FEATURES ............................................................ 6
1.3 YELLOW JACKET 37865 COMPONENTS ....................................... 7
1.3.1 YELLOW JACKET 37865 Base Unit................................... 7
1.3.2 R1234yf Sample Hose............................................. 7
1.3.3 R134a Sample Hose............................................... 8
1.3.4 R134a Tank Adapter Fitting...................................... 8
1.3.5 R1234yf Tank Adapter Fitting.................................... 8
1.3.6 Control Panel................................................... 9
1.3.7 Back Panel Connections.......................................... 9
1.3.8 Hard Shell Storage/Carrying Case............................... 10
2REGRIGERANT IDENTIFIER FOR 1234YF OPERATION .......................... 11
2.1 FIRST USE .......................................................... 11
2.2 TURNING ON THE UNIT .................................................. 11
2.3 CALIBRATION ......................................................... 12
2.4 TESTING THE REFRIGERANT ............................................... 12
2.5 VIEWING THE TEST RESULTS .............................................. 14
3MAINTENANCE & TROUBLESHOOTING ........................................ 14
3.1 CHANGING THE SAMPLE HOSES ............................................. 14
3.2 LOW BATTERY WARNING .................................................. 15
3.3 HELP BUTTON......................................................... 15
3.4 ERROR MESSAGES ...................................................... 15
4APPENDICES ........................................................... 16
4.1 SPARE PARTS LIST .................................................... 16
4.2 SPECIFICATIONS ...................................................... 16

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Safety Precautions
WARNING: To prevent personal injury:
Study, understand, and follow all warnings in this manual before
operating this unit. If the operator cannot read these instructions,
operating instructions and safety precautions must be read and
discussed in the operator’s native language.
Operate this unit with vehicles or cylinders marked to contain
R-1234yf or R134a 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 through a system
or in the same container.
Some vehicles may contain illegal substitute refrigerants that may
contain hydrocarbons. R-1234yf is considered a flammable substance.
Failure to follow the manual can result in serious injury or death.
Less than 2 grams of refrigerant are required to be vented with
each sample. This identifier is designed with sealed heat sources
and without sparking components. Ensure adequate ventilation in the
recycling machine design to prevent the accumulation of
refrigerants.
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, 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.
The optional air detection sensor is a chemical fuel cell sensor
that will eventually expire. The user must return the unit 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 instrument.
Wear eye and skin protection when working with refrigerants.
Escaping refrigerant vapors can freeze upon contact. Do NOT direct
refrigerant escaping from the sample hose toward exposed skin or
toward the face.
Connection to power sources greater than 13V DC could cause “out of
warranty” damage.
No operator access is permitted inside the enclosure.
If the equipment is used in a manner not specified by the
manufacturer, the protection by the equipment may be impaired.

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General Cautions
Always inspect the sample hose before each use. Replace the hose if it
appears cracked, frayed, obstructed or fouled with oil.
ALWAYS turn the compressor or automobile engine off before connecting
the instrument to an air conditioning system.
Always wear eye and skin protection when working with refrigerants.
Escaping refrigerant vapors will present a freezing danger.
To reduce the risk of electrical shock, do not disassemble the
instrument; do not use the instrument in wet or damp areas.
DO NOT direct refrigerant vapors venting from hoses towards the skin.
DO NOT disassemble the instrument. There are no serviceable components
internal to the instrument and disassembly will void the warranty.
ALWAYS place the Identifier on a flat and sturdy surface.
DO NOT utilize any other hose other than those supplied with the
instrument. The use of other hose types will introduce errors into the
refrigerant analysis and instrument calibration.
ALWAYS verify that the refrigerant to be tested does not contain or will
not emit heavy loads of oil or liquid.
NEVER admit any sample into the instrument at pressures in excess of 300
psig.
DO NOT utilize the coupler supplied on the service end of the R134a or
R1234yf 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.
NEVER obstruct the air intake, sample exhaust or case vent ports of the
instrument during use.
This refrigerant identifier is designed for use independently or in
conjunction with an SAE J2843 approved A/C Service Machine to determine
the purity of gaseous R134a or R1234yf refrigerant. We recommend that all
personnel who use this instrument read this manual to become more familiar
with its proper operation.
For further information regarding the application, operation or spare
parts, please contact the Ritchie Engineering Customer Service Department.
If you have questions or comments, we would like to hear from you.
Ritchie Engineering Co., Inc.
10950 Hampshire Avenue South
Bloomington, MN 55438
Tel: [phone] or 800-769-8370
EMAIL: [email protected]
Visit us at www.yellowjacket.com

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1INTRODUCTION AND OVERVIEW
1.1 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 substitute refrigerant
blends can also introduce a flammability hazard to the technician
and the ultimate end user of the vehicle air conditioning system.
This R134a and R1234yf Refrigerant Identifier will provide a fast,
easy and accurate means to determine 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
R1234yf or R134a 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 R1234yf or
R134a, by weight.
The instrument is supplied complete with an R1234yf sample hose, and
R134a sample hose, a 12 VDC power supply 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 with an LCD graphic display,
status indicator lamps, push button communication switches and an
alarm horn. Alarm indications are provided to alert of instrument
fault conditions or contaminated refrigerant presence.

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1.2 Features
The YELLOW JACKET 37865 Refrigerant Identifier is the most precise
handheld instrument ever manufactured for determining the purity of
R1234yf and R134a for the automotive market.
Features Include:
•Advanced ergonomic design
•Fender friendly resting surface
•Large graphic display with on-screen instructions
•Ultra-fast 70 second test time
•Internal, rechargeable battery for cordless operation in any
location
•USB Port for connection to the AC Service Machine
•Hard shell carry/storage case

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YELLOW JACKET 37865 Components
1.2.1 Base Unit
The 37865 base unit houses the Graphic Display, 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.
1.2.2 R1234yf Sample Hose
The 2-meter 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/pressure reducer on the other end that
screws into the R1234yf Low Side Coupler. The sample hose is
considered a consumable maintenance part. A spare hose with Flow
Restrictor only is also provided.
Identifier End
Service End
R1234yf Low Side Coupler
Control
Panel
Sample
Filter
Air Intake
Port

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R134a Low Side Stub
(Fits into R134a Low Side
Coupler)
½” Acme Thread
(Threads onto Cylinder Stub)
O-Ring Seal
(Internal)
1.2.3 R134a Sample Hose
The 2-meter 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/pressure reducer on the other end that
screws into the R134a Low Side Coupler. The sample hose is
considered a consumable maintenance part. A spare hose with Flow
Restrictor only is also provided.
1.2.4 R134a Tank Adapter Fitting
The R134a Tank Adapter Fitting will provide the user with an adapter
to allow connection of the R134a sample hose service end to an R134a
cylinder ACME port.
1.2.5 R1234yf Tank Adapter Fitting
The R1234yf Tank Adapter Fitting will provide the user with an
adapter to allow connection of the M12 Flow Restrictor to the ½” LH
Acme threads on the R1234yf cylinder.
Identifier End
Service End
R134a Low Side Coupler

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1.2.6 Control Panel
The Control Panel serves as the main user interface. The Control
Panel features three soft key buttons that change their function as
the instrument changes modes. The current function for each button
is displayed by the soft key label at the bottom of the graphic
display. Red and Green LED’s at the top of the Control Panel are
used for visual Pass/Fail indications.
1.2.7 Back Panel Connections
The connections located on the back panel are illustrated below.
CAUTION: The sample outlet port should never be obstructed.
Keep the sample outlet port free and clear at all times.
Green LED
Red LED
Soft Key
Buttons
Sample
Inlet
Sample
Exhaust
12VDC Power
Input
Power
On/Off
Graphic
Display
USB

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1.2.8 Hard Shell Storage/Carrying Case
The hard-shell storage/carrying case is custom fit to the Handheld
R1234yf. It provides rugged protection for the instrument as well
as convenient storage for all components. The enclosure is general
purpose and is not watertight.

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2YELLOW JACKET 37865 OPERATION
2.1 First Use
Charge the battery for a minimum of 2 hours with the included
power supply prior to first use.
2.2 Turning on the Unit
For use with an SAE J2843 certified AC Service Machine, connect one
end of the provided USB cable to the USB port on the back of the
identifier and connect the other end of the USB cable to the R1234yf
AC Service Machine. If the unit is being used as an independent
device or for testing of R134a systems, the USB cable need not be
connected.
Press the left power button and the splash screen shown in Figure 1
will appear. After selecting “OK”, the warm up screen shown in
Figure 2 will appear for 30 seconds followed by the “Select
Refrigerant” screen shown in Figure 3. (The “HELP” button functions
are described in section 3.)
SELECT
REFRIGERANT
R134 HELP R1234
WARMING UP
LOW BAT
VER XXX-XXX
OK
Figure 1
Figure 2
Figure 3

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2.3 Calibration
Each time the YELLOW JACKET 37865 begins a new test cycle it must
first self-calibrate. The calibration takes 30 seconds and brings
fresh air into the unit via an internal pump. This fresh air purges
any excess refrigerant from the unit and ensures accurate test
results. Calibration requires that the hose MUST be connected to
the device and disconnected from the vehicle or refrigerant
cylinder. Select the refrigerant to be tested as shown in Figure 3.
Follow the on-screen instructions shown in Figure 4 and then press
the “CALIBRATE” button. This will begin the calibration process and
display the screens shown in Figure 5 followed by Figure 6.
2.4 Testing the Refrigerant
After the self-calibration is complete, the instrument is ready for
testing the refrigerant and will display the screen shown in Figure
7. Connect the hose to the vehicle and open the valve. Press the
“OK” button to begin the test and the screen shown in Figure 8 will
be displayed. The screen shown in Figure 9 will be displayed if any
of the following conditions exist.
•The device is not connected to a refrigerant source.
•The coupler valve is not open.
•The Brass Flow Restrictor is clogged with oil or debris.
•The source contains little or no refrigerant.
CALIBRATING
NOTE
REPLACE FILTER
WHEN WHITE
ELEMENT BEGINS
TO SHOW RED
SPOTS ON OUTSIDE
DIAMETER
READY
1. CONNECT HOSE
TO DEVICE
2. CONNECT USB
CABLE TO
DEVICE & MACHINE
OFF CALIBRATE
CALIBRATING
THIS WILL ONLY
TAKE 30 SECONDS
Figure 4
Figure 5
Figure 6

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HIGH AIR CONTENT
1. CHECK HOSE
COUPLER VALVE
2. CHECK BRASS
FLOW RESTRICTOR
OFF OK
TESTING
RXXX SAMPLE
THIS WILL ONLY
TAKE 60 SECONDS
READY
1. CONNECT HOSE
TO SOURCE
2. OPEN VALVE
3. PRESS OK
OFF OK
Figure 7
Figure 8
Figure 9

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2.5 Viewing the Test Results
Upon completion of the test, the YELLOW JACKET 37865 will display a
screen like that shown in Figure 10 or Figure 11. Selecting “OFF”
to power down the device, “PRINT” to print the results or “OK” to
return to the Select Refrigerant Screen shown in Figure 3.
If the refrigerant tested 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,
disconnect the hose from the vehicle and press either “OK” to return
to the calibration mode or “OFF” to turn the instrument off.
3MAINTENANCE &TROUBLESHOOTING
3.1 Changing the Sample Hoses
If the instrument displays an error or discoloration appears in the
sample hose near the service coupler, the sample hose should be
replaced.
R134: 1.7
R1234: 98.3
R22: 0.0
HC: 0.0
UNK: 0.0
AIR: 1.5
OFF PRINT OK
R134: 98.0
R12: 0.0
R22: 0.0
HC: 2.0
UNK: 0.0
AIR: 1.0
OFF PRINT OK
Figure 10
Figure 11

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3.2 Low Battery Warning
A “Low Bat” indication will appear on the upper right of the screen
if the internal battery voltage falls below an acceptable level.
The device should then be connected to AC power using the included
power supply to recharge the battery.
3.3 Help Button
Pressing the “HELP” button as shown in Figure 12 will provide access
to various device settings as shown in Figure 13.
Using the center button, scroll to the desired setting you wish to
change. Use the right button to select the setting and the left
button to return to the previous screen.
•BACKLIGHT will allow the backlight to be turned on or off when
the device is running on battery power.
•PRINTER will allow paper to be fed into the printer when
replacing a printer paper roll.
•CONTRAST will allow the screen brightness to be adjusted.
When the user is finished making adjustments, press the “PREV”
button to return to the Select Refrigerant Screen shown in Figure
3.
3.4 Error Messages
In the unlikely event that an “Error” message is displayed on the
screen, power off the unit, take it to a location outside of the
shop environment where fresh air is available and turn the unit back
on. If the “Error” message reappears, contact our service
department for assistance (see page 4).
SETTINGS
BACKLIGHT *
PRINTER
CONTRAST
PREV DOWN NEXT
SELECT
REFRIGERANT
R134 HELP R1234
Figure 12
Figure 13

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4APPENDICES
4.1 Spare Parts List
PART NUMBER
DESCRIPTION
68948
Optional internal rechargeable battery kit with
battery and 110V charger
68949
Optional 110/220V power adapter
68977
In line identifier replacement filter
68978
R-12 replacement hose
68979
R-134a replacement hose
4.2 Specifications
SAMPLE PARAMETERS:
Vapor only, oil-free, 300 psig (2 MPa)
Maximum
DETECTED COMPOUNDS:
R134a, R1234yf, R12, R22, HC, Unknown,
Air
SENSOR TECHNOLOGY:
Non-Dispersive Infrared (NDIR)
REFRIGERANT SAMPLE
SIZE:
2 grams per sample
POWER:
12 VDC, 2 Amps Maximum