Epa 608 Universal Study Guide Graded A+

HFO's {Ans: Silicone elastomers, for use in seals and gaskets, are not compatible with which refrigerants?}trillion {Ans: HCFC's have very low atmospheric concentrations measured in parts per...}chlorine in CFC's and HCFC's {Ans: will not dissolve in water}just upstream of the compressor inlet {Ans: where should the suction line filter drier be located}how should refrigerant cylinders be shipped {Ans: upright with proper DOT classification tags.}A2L {Ans: ASHRAE classification that means slightly flammable}false {Ans: True or False: HFC's are highly stable in lower parts of the atmosphere.}false {Ans: True or False: If you are returning the refrigerant directly to the system after servicing, graduated recharging cylinder cannot be used.}when is bubble point used {Ans: When calculating Sub-cooling.}condenser, evaporator {Ans: the pressure difference between _____ and ______ of the system is maintained by the TXV valve}expansion device {Ans: which device is located at the end of the liquid line?}recover {Ans: to remove refrigerant in any condition from a system and store it in an external approved cylinder.}tube leakage {Ans: excessive moisture collection in the purge unit can indicate what?}september 16 1987 {Ans: when was the Montreal protocol signed}type 2