What can non-condensible's cause? - answer✔High head pressure.
When will compressor motor horsepower increase? - answer✔It will increase as the head
pressure increases.
When will compressor motor horsepower decrease? - answer✔As the suction pressure increases.
When using a brine solution in a system what can be used to prevent rusting? - answer✔Di-
Chromate Tablets.
What would cause a Halide torch flame to turn yellow? - answer✔A clogged sample tube.
What is the purpose of having 2 compressors in a cascade system? - answer✔To operate and
very low temperatures and avoid high compression ratio.
Why is a pressure relief valve better than a fusible plug? - answer✔Because it can be re-seated
and is cost efficient.
What could cause compressor knocking? - answer✔Liquid refrigerant slugging the compressor.
What would occur if a TEV'S spring were to break? - answer✔It would flood the evaporator and
raise the suction pressure because a TEV uses spring pressure as its closing force. Thus, if the
spring does not close the TEV refrigerant will constantly be metered into the evaporator.
What is the purpose of the TEV equalizer line? - answer✔It compensates for the pressure drop in
the evaporator. Simply put, it equalizes pressure drop lost across the evaporator.
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