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Which of the following must always be replaced when a retrofit is performed?

A. Condenser
B. Compressor
C. Expansion valve
D. Refrigerant oil

User DJDave
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2 Answers

3 votes

Answer:

D. Refrigerant oil.

Step-by-step explanation:

The job of a refrigerant oil is to lubricate the compressor, if you don't replace it, you may lose your compressor and all are gonna be ruined.

That's why is more important. Also, depending on the situation, because every situation aren't the same.

User Npjohns
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7.3k points
3 votes
The answer is c, hope it helped
User Truongky
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