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BROSE0407 BROSE0407
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6 years ago
Why are piercing valves used in refrigerant work?
 
  A) To remove a process tube B) To install a gauge manifold set
  C) To access a sealed system D) To allow a constant evacuation


[Ques. 2] Who may refill a DOT 39 nonrefillable cylinder?
 
  A) Only EPA-certified refrigerant recyclers B) Only certified technicians
  C) Only refrigerant manufacturers D) Nobody


[Ques. 3] How do piercing pliers differ from braze-on piercing valves with regard to how they are used on sealed systems?
 
  A) Piercing pliers cannot be used to recover refrigerant.
  B) Piercing pliers cannot be a permanent solution.
  C) Piercing pliers require a bolted valve.
  D) Piercing pliers have a greater danger of causing overheating.


[Ques. 4] What is the maximum safe fill level for a refillable refrigerant cylinder?
 
  A) 90 B) 80 C) 85 D) 95


[Ques. 5] How often do refillable refrigerant cylinders need to be inspected?
 
  A) Every year B) Every 10 years
  C) Every 5 years D) Only when they are first made
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bbk12bbk12
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6 years ago
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BROSE0407 Author
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6 years ago
Thank you so much for providing this
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