DX Rack Refrigeration Boot Camp - Cases & Evaporators Part 1

Front

Using the pressure temperature chart, calculate the superheat for this evaporator. Suction line temperature is 12﮿ F and suction pressure is 26 PSIG.

Back

8° superheat

Front

Store Dewpoint needs to be 52° or less so that case operation and defrost are operating efficiently.

Back

True

Front

You walk into a store and there is heavy moisture on the Low Temperature glass doors. You check the rack receiver level first.

Back

False

Front

Before checking and/or adjusting case superheat, ensure the case is turned off.

Back

False

Front

When measuring superheat on an evaporator always use the Dew Point scale on the PT chart.

Back

True

Front

It takes patience to adjust superheat correctly. Always allow the evaporator suction temperature to bottom out 3 cycles before getting the average superheat number and then make a small adjustment. Repeat cycle.

Back

True