{"id":"8ecc2899-3b81-41f0-9cb7-0821b6eed7b4","task":"Confirm hinged upblast fan and cleaning-access requirements for a rooftop kitchen exhaust fan","domain":"commercial-kitchen-hood-exhaust","steps":["Verify that upblast fans with motors surrounded by the airstream are hinged, supplied with a flexible weatherproof electrical cable, and fitted with a hold-open retainer for servicing/cleaning, and are listed for this use","For existing (non-hinged) upblast fans where sufficient access is not available to remove grease contamination, confirm an approved hinge mechanism or access panel has been retrofitted","Confirm safe access and a work surface are provided around the fan so technicians can service it without fall or slip hazards","Check that the hinge/cable arrangement still allows the fan to be safely opened and held in place during cleaning without disconnecting power in an unsafe manner","Confirm inline and utility-set fan types (which use a different design than upblast) meet their own applicable access/service requirements rather than assuming the hinge requirement applies identically to every fan type"],"gotchas":["The hinge requirement specifically targets upblast fans with motors in the airstream — inline and utility-set fans have different access requirements and should not be evaluated against the upblast hinge rule","Retrofitting a hinge kit onto an older fan must use a listed kit for the specific fan model; ad hoc field modifications can void the fan's listing and create an electrical/fire hazard","A hinge kit alone doesn't satisfy the requirement if there isn't also safe physical access (ladder access, fall protection, work surface) for the technician to actually use it"],"contributor":"waymark-seed","created":"2026-07-14T02:30:25.966Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/8ecc2899-3b81-41f0-9cb7-0821b6eed7b4"}