ASCS Post-Cleaning Verification and Testing 2

Question 1

Which instrument is commonly used to detect and quantify airborne particulate matter during post-cleaning air quality verification?

Accepted Answer

Particle counter

Answer

Manometer

Answer

Hygrometer

Answer

Anemometer

Question 2

In HVAC post-cleaning verification, what does 'source removal' confirmation verify?

Accepted Answer

That contaminants have been physically extracted from the HVAC system

Answer

That chemical cleaners have been fully rinsed from duct surfaces

Answer

That the original contamination source has been identified and documented

Answer

That filter media has been replaced after cleaning

Question 3

A third-party post-cleaning inspection is performed by whom?

Accepted Answer

An independent inspector not affiliated with the cleaning contractor

Answer

A senior technician from the same cleaning company

Answer

The building's maintenance manager

Answer

An OSHA compliance officer

Question 4

What type of camera is most effective for detailed visual inspection of interior ductwork surfaces after cleaning?

Accepted Answer

Video borescope or robotic inspection camera

Answer

Thermal imaging (infrared) camera

Answer

Standard digital camera with flash

Answer

Ultraviolet (UV) camera

Question 5

How does a post-cleaning particle count comparison typically work?

Accepted Answer

Particle counts are taken before cleaning begins and after to demonstrate improvement

Answer

Particles are counted at a single interior duct location only

Answer

Outdoor air particle levels are measured and compared to indoor levels

Answer

Only post-cleaning particle counts are documented

Question 6

Which of the following is NOT a typical component of post-cleaning verification documentation?

Accepted Answer

Customer's personal financial information

Answer

Photographs of accessible duct areas

Answer

List of HVAC components cleaned

Answer

Inspector's name and certification number

Question 7

When verifying that an air handling unit (AHU) has been properly cleaned, which components should an ASCS technician inspect?

Accepted Answer

Coils, drain pans, blower section, and accessible interior surfaces

Answer

Electrical wiring and control panels only

Answer

Exterior casing and access door hinges only

Answer

Refrigerant lines and compressor unit