Prior to entering a facility, cleaning equipment MUST
A. be documented and inventoried.
B. have identifying markings,
C. be clean and in good working order.
D. be secured in a gang box.
An ASCS is planning to clean the ductwork in a commercial building. Which procedure is used to prevent the release of dirt into the occupied space during the cleaning?
A. Coverall office furnishings
B. Use the contact method of cleaning
C. Place the system under negative air pressure
D. Place the occupied space under negative air pressure
A portable self-contained blower assembly equipped with HEPA filtration and designed to recirculate a defined volume of air is
A. a negative air machine
B. an air scrubber.
C. a fan col.
D. an Air Handling Unit (AHU).
During an HVAC system cleaning project, an ASCS encounters vents that have been painted over. What is the usual course of action?
A. Inform the over that the ductwork cannot be cleaned because removing the vent may damage the paint.
B. Proceed with the use of agitation tools without removing the vent.
C. Continue with the cleaning process, avoiding the use of agitation tools where vents have been painted over.
D. Inform the owner that a razor knife will be used to cut the paint before continuing with cleaning.
Which ceiling type is easiest to remove for ductwork access?
A. Tin
B. Suspended
C. Spline
D. Sheet Rock
Access openings in ductwork should
A. be installed in the bottom.
B. not restrict airflow.
C. be installed on the side.
D. not be sealed airtight.
What does ACR, The NADCA Standard recommend while cleaning internally-lined fiberglass ductwork, microbial contamination is observed within the fiberglass liner?
A. Remove and replace the fiberglass liner
B. Clean and sanitize the fiberglass liner
C. Clean and coat the fiberglass liner
D. Clean and disinfect the fiberglass liner
During cleaning, vacuum collection equipment shall be used
A. continuously.
B. on the return only.
C. on the supply only.
D. when the building is occupied.
The NADCA Vacuum Test template is
A. not necessary if the area being tested is well defined.
B. made up of one 2x 25 cm slot
C. used to prevent direct contact with the component surface.
D. usually left in place for future testing of the same area
After completion of an air duct cleaning and visual inspection, the client states, "I expected the ducts to be cleaner.” What is the next step an ASCS should recommend?
A. Re-cleaning of the entire system
B. A Surface Comparison Test
C. Re-cleaning of the affected area
D. A NADCA Vacuum Test
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