Are approved up-blast fans with motors surrounded by the air stream required to be hinged?

The requirement for approved up-blast fans with motors surrounded by the air stream to be hinged is based on safety and maintenance considerations. Hinged fans allow for easier access to the motor and internal components for regular maintenance, inspection, and cleaning. This accessibility is crucial in commercial cooking operations, where grease and contaminants can build up and increase the risk of fire.

By having these fans hinged, maintenance personnel can safely perform their duties without completely disassembling the unit or risking exposure to operational hazards. This aligns with the NFPA 96 standard's goal of reducing fire risks and promoting safe practices within commercial cooking environments. Therefore, stating that approved up-blast fans with motors surrounded by the air stream are required to be hinged is consistent with maintaining safety and ensuring that equipment is properly maintained.