608 (Type Ii) Exam Review With Questions And Answers 2024/2025 Quiz

With an air-cooled condenser on the roof of a building & the evaporator on the first floor, recovery should first occur? {Ans: From the liquid line entering the evaporator.}During the evacuation of a system that contains large amounts of moisture it may be necessary to increase pressure in the system with ________, to counteract the freezing of the moisture. {Ans: Nitrogen.}An oil sample should be taken when _________. {Ans: The compressor has burned-out.}A system can be evacuated to only atmospheric pressure when? {Ans: Leaks in the appliance make evacuation to the prescribed level unattainable.}Moisture is removed from a system by? {Ans: Using a filter drier.}R-410A is different from other ASHRAE 400 series non-azeotropic blends because? {Ans: R-410A behaves as a near azeotropic refrigerant, & can be topped off.}To recover liquid refrigerant, you must connect one hose to the? {Ans: Liquid Line.}On refrigeration units that use an open compressor; the _______ is most likely to leak if the unit is not used for several months. {Ans: The rotating shaft seal.}After installation of a field-piped R-410A split heat pulp, the unit should first be? {Ans: Pressurized with nitrogen then leak checked.}In a refrigeration