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chapter 121 compression refrigeration system pre startup procedures Exam Questions and Answers
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  • Refrigeration machine operator
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Positive pressure testing of a new refrigeration system may be done: Using litmus paper. By filling the system with oxygen. By filling the system with ammonia. By filling the system with an inert gas. By filling the system with softened water. - Answer-by filling the system with...

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  • September 10, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • chapter 121 compression refrigeration system pre s
  • positive pressure testing of a new refrigeration s

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  • Refrigeration machine operator
  • Refrigeration machine operator

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chapter 121 compression refrigeration
system pre startup procedures Exam
Questions and Answers
Positive pressure testing of a new refrigeration system may be done:

Using litmus paper.

By filling the system with oxygen.

By filling the system with ammonia.

By filling the system with an inert gas.

By filling the system with softened water. - Answer-by filling the system with an inert gas

A sulphur candle is used to test for:

Freon leaks

Ammonia leaks

Propane

Vacuum seal

CFC leaks - Answer-ammonia leaks

Which of the following is NOT a problem associated with excessive head pressure in a
refrigeration plant?

Increased power consumption.

Decreased condenser capacity.

Reduced compressor capacity.

Over-stressed compressor parts.

Premature compressor lube-oil breakdown. - Answer-decreased condenser capacity

Which of the following statements about adding oil to a system is true?

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