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Author Question: If the low side test pressure is not know, the maximum pressure that should be used for leak testing ... (Read 128 times)

ec501234

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If the low side test pressure is not know, the maximum pressure that should be used for leak testing an R-22 refrigeration system with hermetic compressor is:
 
  A) 150 psig. B) 300 psig. C) 200 psig. D) 250 psig.

Question 2

When the contacts on a contactor or motor starter begin to stick:
 
  A) They should be replaced.
  B) They should be reconditioned using a file.
  C) They should be cleaned with contact cleaner.
  D) The voltage to the coil should be increased to strengthen the contactor.



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CharlieArnold

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Answer to Question 1

A

Answer to Question 2

A





 

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