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Author Question: How does a pneumatic control system operate? What will be an ideal ... (Read 67 times)

EAugust

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on: Jul 26, 2018
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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Reply #1 on: Jul 26, 2018
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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Reply #2 on: Jul 26, 2018
Thank you!


HandsomeMarc

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Reply #3 on: Jul 26, 2018
Always glad to help...


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