Detect noncondensables, using the pressure and temperature relationship (i.e., the P/T chart).

Detection should include using the gauge set and pressure temperature chart to identify the refrigerants and noncondensables.

Process/Skill Questions:

• What indicates that there are noncondensables in the tank of refrigerant?
• What is a noncondensable?
• How are noncondensables prevented from entering the recovery cylinders?
• How does Boyle’s law apply to noncondensable gasses?