MAINTENANCE SKILLS TEST

d. 50 265. Why do you use a vacuum pump on an air conditioning unit? To remove the freon. To remove the impurities. To remove the gas. To remove the oil. Why should you pull a vacuum? Check for leaks. Remove impurities. Extend the life of the unit. All of the above. What is the purpose of a cap (capillary) tube? To vent excess air out of ... ................
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