A chemical dot placed under the lens of a sight glass that is exposed to liquid refrigerant monitors

A chemical dot placed under the lens of a sight glass that is exposed to liquid refrigerant monitors

A chemical dot placed under the lens of a sight glass that is exposed to liquid refrigerant monitors




a. Liquid flow
b. Refrigerant levels
c. The presence of moisture in the refrigerant
d. Loss of refrigerant
e. Oil in the refrigerant








Answer: C


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