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Author Question: How does a pneumatic control system operate? What will be an ideal ... (Read 66 times)

EAugust

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How does a pneumatic control system operate?
 
  What will be an ideal response?

Question 2

Explain how a technician should manual defrost a frozen evaporator coil.
 
  What will be an ideal response?



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HandsomeMarc

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Answer to Question 1

Pneumatic controls operate on air pressure. The output of a pneumatic control is an air pressure that varies in proportion to the condition being sensed.

Answer to Question 2

Using water is the best method, but is not always practical since the water will need to be drained away. If water cannot be used easily, a heat gun usually works well.



EAugust

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HandsomeMarc

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