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Red Seal Refrigeration Review Questions with Correct Answers.
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Red Seal Refrigeration Review Questions with Correct Answers.
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Red Seal Refrigeration Review Questions with CorrectAnswers
when building a walkin freezer where in the vapor barrier installed?
Correct Answer-Outside on the warmest side of the box
On Compressor Motor Windings how do you calculate Common to Run
Winding resistance? Correct Answer-Start to Run Winding - Common to
Start Winding
when testing compressor motor windings what ohm reading indicates the
cleanest system? Correct Answer-2000 Ohms
what causes High suction pressure on a heat pump? Correct Answer-
Leaking reversing valve
what tools do you use to calibrate a economizer? Correct Answer-
Thermometer, psychrometer, multimeter
What kind of coil do you want for a high dehumification? Correct
Answer-Lots of rows and low velocity
which Refrigerant oil is the most hygroscopic? Correct Answer-POE Oil
what does hygroscopic mean? Correct Answer-Relating to humidity of a
substance that tends to absorb moisture from the air
, how would you adjust the king valve when doing a manual pump down?
Correct Answer-front seat it by turning clockwise (closing the valve)
Where is a king valve located? Correct Answer-At the Outlet of the
liquid receiver
where is a queen valve located? Correct Answer-At the INLET of the
receiver usually used to isolate the receiver it is not very commonly used
Why are glycol inhibitors added to chilled water loops? Correct Answer-
to prevent corrosion
How many cubic feet is 1 Litre of water? Correct Answer-0.035ft³
what is the density of water? Correct Answer-62.41 lb/ft³
How many lbs are in a gallon? Correct Answer-8.33lbs
how many BTUh is water to steam (vaporization) Correct Answer-
970btu
How many btu is Ice to water? (solidification) Correct Answer-144btu
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