8.1.1.1 - Approved upblast fans with motors surrounded by the airstream shall be hinged, supplied with flexible weatherproof electrical cable and service hold-open retainers to permit inspection and cleaning.


Every restaurant kitchen exhaust fan must be hinged, to allow full access to clean the ductwork and exhaust fan blade. By not installing an exhaust fan hinges may damage the roof, fan, or fan wiring every time is removed for cleaning with no hinges.
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