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Systems are tested prior and after cleaning.
Photos are taken and documented
Drop cloths and plastic sheeting is used in areas where work is being performed before the start of every shift, and removed at the end of the shift.
Lock-Out Tag-Out is performed on the HVAC System being cleaned.
Existing access openings are utilized when possible. New access doors are installed to facilitate the cleaning process.
New access doors that are installed are installed in accordance with industry standards. This prevents air leakage.
Remove and reinstall ceiling sections to gain access to the HVAC System during the cleaning project.
All diffusers, registers and grilles associated with the system being cleaned are removed, washed, dried. And reinstalled.
Return ductwork and outside air ductwork are the first areas cleaned. By cleaning these areas first (e.g. with the flow of air) it prevents dirt and debris from re-entering the AHU and supply ductwork.
Volume and zone damper positions are marked prior to cleaning and returned to their original setting after cleaning.
All ductwork is cleaned with a HEPA-Filtered Negative Air Machine. It is attached to the ductwork as a collection device for the contaminants and to prevent the contaminants from dispersing into the indoor environment.
Pneumatic and electric agitation devices are utilized to push the contaminants towards the HEPA-Filtered Negative Air Machine for collection.
A germicidal detergent/sanitizer is then applied to all surface of the ductwork
New filters are installed
A site walk-thru is performed to guarantee complete customer satisfaction
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