Positive shutoff fittings allow technicians to reduce the amount of which of the following?
A) Refrigerant spray when disconnecting from a refrigeration system
B) The amount of refrigerant coming into the hoses
C) Liquid in the unit during evacuation
D) Refrigerant spray when connecting to a refrigeration system
A
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At a time when the outdoor temperature is at or near design temperature, heating or cooling equipment sized to the design parameters should _____.
a. cycle on and off frequently b. be shut down for protection c. run almost constantly d. run longer at night than during the day
A differential is needed between any two drive wheels, whether in a RWD, FWD, all-wheel drive (AWD), pr four-wheel drive (4WD).
Answer the following statement true (T) or false (F)
When the water and refrigerant in a heat exchanger flow in opposite directions, it is referred to as ____.
A. countersink B. parallel flow C. counter flow D. bias flow
A pictorial view in which the part is viewed from below is called a(n) ___________________________________.
Fill in the blank(s) with the appropriate word(s).