EPA Section 608 Technician Certification Study Guide Questions with correct answers

What are the typical uses of the center port of gauge set? Correct Answer - Used during evacuation, charging and recovery procedures. What color are the gauges on a manifold gauge set? Correct Answer - Low pressure is blue, High pressure is red. What are the typical ranges of pressure measurements used on the gauges of a manifold gauge set? Correct Answer - High side is 0 to 500 PSIG; Low side is 0 to 350 PSIG and 0 to 30 in. Hg below atmospheric pressure. Is the refrigerant leaving a condenser at a high or low pressure? Is it a liquid or a gas? Correct Answer - High pressure, liquid. Is the refrigerant entering the expansion valve (variable metering device) a liquid or gas? Correct Answer - Liquid, high pressure. Is the pressure of the refrigerant entering the compressor high or low? Correct Answer - Low pressure vapor. Where in a refrigerant circuit does a liquid boil to absorb heat? Correct Answer - In the evaporator. The refrigerant in the suction line is a gas that has been heated above its saturation. What is this condition called? Correct Answer - Superheated vapor.