Why should the oil be removed from a low-pressure system at 130 F
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When is it against EPA regulations to use system-dependent r…
When is it against EPA regulations to use system-dependent recovery equipment?
To determine if the system is leaking more than the allowabl…
To determine if the system is leaking more than the allowable rate, the EPA allows the use of which one of the following methods to determine the full charge?
Why should solderless type piercing valves NOT remain instal…
Why should solderless type piercing valves NOT remain installed on refrigeration systems after completion of repairs?
What are the characteristics of hydrofluoroolefins (HFOs)?
What are the characteristics of hydrofluoroolefins (HFOs)?
Which of the following is a reason to take an oil sample?
Which of the following is a reason to take an oil sample?
what is a deep vacuum usually measured in?
what is a deep vacuum usually measured in?
what will back-seating a suction shutoff valve close?
what will back-seating a suction shutoff valve close?
Which of the following statements about R-1233zd is FALSE?
Which of the following statements about R-1233zd is FALSE?
when could a reciprocating compressor can be damaged if ener…
when could a reciprocating compressor can be damaged if energized?