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ASE S7 Air Conditioning Systems & Controls (School Bus) Practice Questions - ASE S7 - Air Conditioning Systems & Controls (School Bus) Certification Exam
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Question Number 5
A bus A/C system is being evacuated. The purpose of the vacuum (evacuation) step is to:
Remove air and boil off moisture before recharging
Test compressor clutch operation
Pressurize the system for a leak test
Add refrigerant oil to the system
✔ Correct Answer:
Remove air and boil off moisture before recharging
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