Recovering refrigerant from a system in the liquid phase will cause the loss of what?

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Multiple Choice

Recovering refrigerant from a system in the liquid phase will cause the loss of what?

Explanation:
When you recover refrigerant while the system is full of liquid, the lubricant oil is carried out with the liquid refrigerant. The compressor oil (which lubricates the compressor) can be entrained in the liquid, and as the liquid is drawn into the recovery equipment, some oil exits the system. This is why the loss occurs with oil, not water or refrigerant vapor or any lubricant additives. After such a recovery, you may need to replenish the oil in the compressor to maintain proper lubrication.

When you recover refrigerant while the system is full of liquid, the lubricant oil is carried out with the liquid refrigerant. The compressor oil (which lubricates the compressor) can be entrained in the liquid, and as the liquid is drawn into the recovery equipment, some oil exits the system. This is why the loss occurs with oil, not water or refrigerant vapor or any lubricant additives. After such a recovery, you may need to replenish the oil in the compressor to maintain proper lubrication.

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