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1. Identify the compressor oil and refrigerant system type. Follow the steps itemized below using the correct
brass coupler/purge fitting for the compressor oil and refrigerant type.
Compressor Oil Refrigerant Type Brass Coupler / Purge Fitting P/N
ND-11 R134a 09870-10010-Y
R1234yf 09870-20010-Y
ND-12 R134a 09870-10010-B
R1234yf 09870-20010-B
2. Remove the large cap from the 1st cartridge. Completely unscrew the handle on the injector and screw the
dye cartridge into it.
3. Remove the purge fitting from the brass coupler and hold the cartridge vertically with the small cap on
top. Remove the cap and screw the cartridge firmly to the brass coupler.
4. Insert the purge fitting into the brass coupler.
5. Turn the handle to advance the plunger until it stops, passing all the dye out of the cartridge.
6. Remove the purge fitting from the brass coupler.
7. Completely unscrew the handle on the injector and unscrew the 1st empty cartridge from the brass
coupler and dispose.
8. Install the 2nd cartridge onto the brass coupler.
9. Install the purge fitting to the brass coupler and turn the handle to advance the plunger until a small
amount of dye exists the purge fitting.
10. Remove the purge fitting. The injection tool assembly is now purged and ready for use.
11. Connect the brass coupler to the low-side service port.
12. Turn the plunger clockwise to inject all the dye into the vehicle.
13. Disconnect the brass coupler from the service port and wipe both clean.
14. Start the engine and run the air conditioning system on maximum for 5 to 10 minutes to circulate the dye
through the system.
15. Turn OFF the engine and inspect for possible leak areas with the ultraviolet (UV) flashlight. Leaks will glow
bright yellow-green. The fluorescence will be brighter under low light condition.
16. To find smaller leaks, operate the air conditioning system over the next 24 to 48 hours inspecting
periodically for leaks.
1 7. Once all leak repairs are completed, use the GLO-AWAY + dye cleaner and the ultraviolet (UV) flashlight
to clean the area and ensure no dye remains.
CAUTIONS
• DO NOT look directly into the ultraviolet (UV) flashlight and always wear ultraviolet (UV) glasses.
• Wear safety glasses when connecting/disconnecting the dye injection tool from the air conditioning
service port.
• DO NOT operate the air conditioning system while the dye injection tool is connected to air conditioning
system.
• DO NOT connect the dye injection tool to a system that is evacuated.
• The air conditioning system must contain enough refrigerant to operate the compressor and circulate the
fluorescence dye in order to find leaks.
• DO NOT mix ND-11 and ND-12 fluorescence dyes. Always use the fluorescence dye cartridges with the
designated injector tool brass coupler.
• After use, store the injector tool and fluorescence cartridges in a cool place, away from sunlight.
• Dispose of any fluorescence dye is accordance with all local, state and federal regulations.
NOTE:
Two dye cartridges are required per vehicle service. 1st cartridge will be completely purged through the
brass coupler to ensure there are no contaminants such as moisture, air, etc. The 2nd cartridge will be
injected into the air conditioning system to inspect for leaks.