SkillCat EPA 608 Exam with Study Questions and Answers

SkillCat EPA 608 Exam with Study Questions and Answers The bubble point is ANSWER The temperature that the first refrigerant in a blend turns into vapor The dew point is ANSWER The temperature that the first refrigerant in a blend turns to liquid What is ternary blend ANSWER Three refrigerants blended together Which of the following is considered retrofitting ANSWER Modifying components of the system to use a new refrigerant Why should you never mix your own refrigerants ANSWER It's illegal, it can cause equipment failure, mix has unpredictable temperature True or false If a refrigerant has a drop in replacement then no retrofit is needed ANSWER True true or false In a zeotropic blend all refrigerants have the same boiling point ANSWER False True or false R407c is an azeotropic blend ANSWER False True or false refrigerant blends need to be charged as a liquid ANSWER True True or false Refrigerant blends take on the ashrae number of the main refrigerant blend ANSWER False