The purpose of isopropyl alcohol is

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Multiple Choice

The purpose of isopropyl alcohol is

Explanation:
Isopropyl alcohol is used to clear frost and moisture from the sight glass so you can clearly observe refrigerant flow. It evaporates quickly and dries the surface, leaving the glass readable for accurate inspection during charging and troubleshooting. It’s not a lubricant for seals, and it won’t dissolve refrigerant residues, so the best fit in this context is keeping the sight glass free of ice and condensation.

Isopropyl alcohol is used to clear frost and moisture from the sight glass so you can clearly observe refrigerant flow. It evaporates quickly and dries the surface, leaving the glass readable for accurate inspection during charging and troubleshooting. It’s not a lubricant for seals, and it won’t dissolve refrigerant residues, so the best fit in this context is keeping the sight glass free of ice and condensation.

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