Service openings shall NOT be made in what type of duct?
A. Duct board
B. Fibrous glass
C. Metal
D. Flexible
When closing wrapped sheet metal ducts, the insulation should be
A. adhered with caulking.
B. left off for future access.
C. folded into place.
D. sealed with tape.
When working in a hospital, who is responsible for determining cleanup of the work area?
A. Contractor and patient advocate
B. Contractor and local building official
C. Client and local building official
D. Client and contractor
When finishing up the air duct cleaning project, what is one of the final steps the ASCS should perform prior to leaving the client's property?
A. Check the panel to make certain the circuit breaker is of.
B. Ensure fire protection systems are de-energized
C. Check that the system functions property in heating/cooling mode.
D. Ensure Lockout/Tagout locks are in place
After restarting the HVAC system, the technician shall verify
A. the system functions in heating/cooling mode.
B. the floor coverings are removed.
C. service openings are closed.
D. payment is collected.
When is it appropriate to verify the effectiveness of HVAC system cleaning?
A. During the cleaning process
B. After the system is cleaned, and before the system is restarted
C. After the system is restarted
D. After the system is cleaned, but before coil cleaning is completed
Unless otherwise specified, the goal of HVAC system cleaning is to restore the system to what minimum level of cleanliness?
A. The system is visibly clean
B. The system is tree of all adhered substances.
C. The weight of contaminants is more than .7 mg per 100 sq. cm.
D. The system passes the White Glove Test.
Appropriate work-site containment monitoring is used to
A. demonstrate the effectiveness of environmental engineering controls.
B. monitor the progress of the project with respect to the schedule.
C. monitor worker efficiency and safety.
D. monitor the working hours relative to the plan.
In accordance with ACR, the NADCA Standard, an accurate indicator of the effect of the removal of debris from the evaporator coil is to measure
A. pressure drop across the evaporator coil
B. the length and thickness of the evaporator coil
C. the velocity of return air prior to the filter.
D. the velocity of supply air at the diffusers.
What is a common method of recording conditions inside the ductwork?
A. A voice recording
B. Written documentation
C. Photographs
D. Telling a coworker
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