How does increased store humidity affect the operation of the refrigerated cases?
A) Operating time increases and efficiency decreases due to increased coil frosting.
B) Refrigeration capacity is unaffected, but the food hydration cycles are decreased.
C) Operating time is decreased and efficiency increased because of the natural cooling effect of the moist air.
D) Operation of the refrigerated cases is unaffected by humidity because they are only providing sensible cooling.
A
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Cabinet types and sizes are recognized by a combination of drawing representations and commonly used ____ designations.
A. shape B. letter/number C. 10-digit number D. color
The preferred method to clear diagnostic trouble codes (DTCs) is to ________
A) Disconnect the negative battery cable for 10 seconds B) Use a scan tool C) Cycle the ignition key on and off 40 times D) Remove the computer (PCM) Power feed fuse
Grinding dust can:
A) Be extremely fine metal particles B) Be controlled using coolants C) Be a hazard to health D) All of the above
The discharge air temperature is warm or slightly cool. The pressure gauges shown indicate which most likely cause?
A) Low on refrigerant
B) Defective compressor
C) Excess refrigerant in the system
D) Lack of airflow through the condenser