cleaning horizontal (only) harman exhaust

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hinmo24t

New Member
Feb 12, 2024
22
MA
installers told me for 1-ton or semi annual/annual deep clean that the horizontal exhaust we had installed
has to be twisted off (disconnected from stove and removed from living room wall for cleaning.
he said you will brush but then you cant vacuum out from against the fan or something
BUT i read that the TEST setting on one of the knobs actually runs the exhaust fan only, and someone said
turn it to this during a cleaning, anything you dont vacuum from inside will be blown out exhuast
did my installer maybe not know this (i dont think a lot of people do) and do you think i can clean it while connected on test
and vacuum from inside and outside while connected?

thanks