Explain what symptoms would be observed if the inlet strainer of a thermostatic expansion valve becomes clogged.

What will be an ideal response?


The customer would place a "no cooling" call since the box would not be maintaining the desired temperature.

Upon arriving at the job, the service technician would observe the following:
-Evaporator superheat will be excessively high
-The inlet of the evaporator may be frozen, or at least frosted
-The evaporator will be warmer than normal (to the touch)
-Low suction pressure
-The temperature differential between the air supplied to the box and the box temperature will be very low
-The compressor shell will be warmer than normal (less suction cooling)

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Grease is a lubricant that is suspended in ____________________.

Fill in the blank(s) with the appropriate word(s).

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What is a tensiometer?

What will be an ideal response?

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Many families of desert plants have adapted ways of protecting their water stores with ____ to ward

off predators.

a. a bitter odor c. extremely thick outer layers b. prickles and spines d. pockets of heat

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Unlike shearing, by which the product is removed from a stock sheet, machining removes the unwanted materials and leaves the product.

Answer the following statement true (T) or false (F)

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