Define predictive maintenance. A) Performing maintenance and ...

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Define predictive maintenance.
 
  A) Performing maintenance and testing whenever the system quits operating correctly
  B) Replacing all system components on a rotating basis
  C) Monitoring key performance indicators and performing maintenance when these indicators show a need for maintenance
  D) Performing maintenance and testing based on a regular schedule

Question 2

When leak testing a low pressure chiller, the pressure should not be allowed to exceed 10 psig
 
  A) to avoid freezing the chiller bundle
  B) to avoid causing high compressor current draw
  C) to avoid opening the high pressure cutout and shutting the system down
  D) to avoid breaking the rupture disk and losing the refrigerant charge

[Silverbeard98]

Answer to Question 1

C

Answer to Question 2

D

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TYSM

[Kedrick2014]

Excellent