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Refrigeration & Air Conditioning Mechanic Red Seal · Question

What is the purpose of a sight glass with a moisture indicator?

A sight glass allows visual inspection of refrigerant flow and changes color to indicate the presence of moisture in the system.

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Question: What is the purpose of a sight glass with a moisture indicator?

Answer options: ✅ To check for adequate refrigerant charge and moisture content

  • To monitor the oil level in the compressor
  • To measure the system's subcooling
  • To detect gas leaks in the refrigerant lines

Correct answer: To check for adequate refrigerant charge and moisture content

Explanation: A sight glass allows visual inspection of refrigerant flow and changes color to indicate the presence of moisture in the system.

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