1. Explain a method used to determine the correct operating discharge pressure of a commercial refrigeration system.
2. Explain a method used to determine whether noncondensables are in a refrigeration system.
3. List some common causes of an evaporator operating with a low superheat and a high suction pressure.
4. A technician should use a short refrigeration gauge on what type of refrigeration systems?
5. List some methods of searching for refrigerant leaks.