ASE S7 Air Conditioning Systems & Controls (School Bus) Practice Questions - ASE S7 - Air Conditioning Systems & Controls (School Bus) Certification Exam

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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