Outdoor HVACR condenser coils and fully blocked HVACR evaporators. Automotive applications include fully blocked radiators, fully blocked intercoolers, fully blocked EV thermal management heat exchangers (take precautions to prevent Viper Max Strength Brightener from coming into contact with sensitive vehicle components or painted and chrome surfaces).

1. Use the Viper Foam Gun (RT300S) set to your desired dilution ratio, and fully saturate the coil with fluid.
2. Wait 5 – 10 minutes for foam to generate and loosen the dirt, grease, grime and hard oxidation.
3. Rinse thoroughly with plenty of water. Do not allow rinse water to enter sewers, storm drains or water courses.

• This max strength product must be used by skilled HVACR professionals only
• For best results, apply Viper Brightener Cleaner through our exclusive Viper Foam Gun (RT300S) Or Viper 2-in-1 Foam Sprayer (RT301S)
• Viper Brightener Cleaner will remove all factory corrosion protection coatings, so use Viper Coil Coating (RT640A) to restore protection
• Never use acids to clean coils. They are more dangerous than alkaline solutions and destroy the bond between aluminium fins and copper tubing, resulting in loss of heat transfer