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Author Question: What should a service technician do if they find a blown fuse in series with the low voltage side of ... (Read 127 times)

evelyn o bentley

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on: Jul 26, 2018
What should a service technician do if they find a blown fuse in series with the low voltage side of the transformer?
 
  What will be an ideal response?

Question 2

What should a service technician do if they find a blown fuse in the unit disconnect switch during the preliminary inspection?
 
  What will be an ideal response?


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dajones82

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

Check all low voltage controls for shorts and grounds. After replacing the fuse, check the voltage output of the secondary side of the transformer. Then monitor that voltage while running the system through its different operating cycles.

Answer to Question 2

Check all major loads for shorts and grounds. After replacing the fuse, check the system amp draw and compare it to the data plate rating. Finally, check the amp draw of each major load individually.


evelyn o bentley

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Reply 2 on: Jul 26, 2018
Great answer, keep it coming :)

vickyvicksss

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Reply 3 on: Yesterday
Wow, this really help

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