EPA 608 TYPE 1 ACTUAL EXAM DETAILED QUESTIONS AND CORRECT ANSWERS ALREADY A GRADE 2024 LATEST.

EPA 608 TYPE 1 ACTUAL EXAM DETAILED QUESTIONS AND CORRECT ANSWERS ALREADY A GRADE 2024 LATEST. Heat pumps that have been retrofitted from R-22 to R-407C should be leak checked with: ________. a) HFCs b) HCFCs c) pressurized nitrogen d) compressed air - ANSWER- c) pressurized nitrogen When inspecting a system for leaks, you should look for: ________. a) frost on the pipes b) puddles of liquid refrigerant c) particles from the drier core d) traces of oil - ANSWER- d) traces of oil Soap bubble testing is used: _________. a) to pinpoint refrigerant leaks b) only with CFCs and HCFCs c) to detect water leaks d) to see if the condenser or evaporator is excessively dirty - ANSWER- a) to pinpoint refrigerant leaks The proper charging method for blended (non-azeotropic) refrigerants (400 Series) is to remove the charge from the cylinder as a: _____. a) vapor b) liquid c) superheated vapor d) subcooled liquid - ANSWER- b) liquid An oil sample should be taken when: _________. a) a new filter drier has been installed b) the compressor has burned out c) the unit is not cooling properly d) recycled refrigerant has been added to the unit - ANSWER- b) the compressor has burned out