EPA Section 608 Technician Certification Study Guide questions with correct answers

What are the typical uses of the center port of gauge set? - Answer Used during evacuation, charging and recovery procedures. What color are the gauges on a manifold gauge set? - 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? - 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? - Answer High pressure, liquid. Is the refrigerant entering the expansion valve (variable metering device) a liquid or gas? - Answer Liquid, high pressure. Is the pressure of the refrigerant entering the compressor high or low? - Answer Low pressure vapor. Where in a refrigerant circuit does a liquid boil to absorb heat? - 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? - Answer Superheated vapor.