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Author Question: Consider basic relay logic. What is meant by an AND function? What is meant by an OR function? ... (Read 109 times)

WWatsford

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on: Jul 26, 2018
Consider basic relay logic. What is meant by an AND function? What is meant by an OR function?
 
  What will be an ideal response?

Question 2

What types of fluids are used for secondary loop systems?
 
  What will be an ideal response?


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paavo

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Reply #1 on: Jul 26, 2018
Answer to Question 1

Two contacts wired in series would be considered an AND function. First one contact closes AND the second contact closes to energize the load. Contacts in parallel will produce an OR function. Contact 1 OR contact 2 will close.

Answer to Question 2

The lowest temperature freezing loops often use a water-based inhibited Potassium Formate salt


WWatsford

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Reply 2 on: Jul 26, 2018
Wow, this really help

kishoreddi

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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