Ase A7 Heating Air Conditioning |120 Questions| With Correct Answers.

Technician A says refrigerant flows from the top of the condenser to the bottom. Technician B says a restriction in a condenser can cause damage to the compressor. Who is correct? {Ans: Both technicians are correct.}Failure to sue the correct out will cause ? (Lack of lubricantion) A. Damage to the condenser B. Damage to evaporator C. Damage to the compressor D. All the above {Ans: Answer C is correct R-134a uses only synthetic oil, polyalkylene glycol (PAG) there's are a number of different blends of PAG always use the recommended one for the system. R-12 uses mineral oil because it doesn't break down the R-12.}When replacing high pressure valve is best to replace it ? A. When cold B. When hot C. With one similar to specs D. All the above {Ans: Answer C is correct unless it being retrofitted to use 134a refrigerant instead of r-12}When the compressor is operating, a loose compressor mount or bracket may ? A. Pulse B. Knock C. Vibrate D. All the above {Ans: Answer C is correct this noise/feeling will usually stop when the compressor is disengage.}What hose is going from the evaporator to compressor ? A. Discharge