Air Systems Cleaning Specialist (ASCS) — Question 8

During cleaning, vacuum collection equipment shall be used

Answer options

• A. continuously.
• B. on the return only.
• C. on the supply only.
• D. when the building is occupied.

Correct answer: C

Explanation

The correct answer is C, as vacuum collection equipment should be used specifically on the supply to ensure that contaminants are effectively removed from the air being circulated. Options A and D suggest using the equipment continuously or when the building is occupied, which may not be the most efficient or safe approach. Option B limits usage to the return, which does not adequately address the need for cleaning the supply side.