609.5.3.2.1 Grease filters.
FC § 609.5.3.2.1
Grease filters shall be inspected daily by a trained and knowledgeable person, and cleaned as necessary by such a person, but at least once a month. Additionally, grease filters shall be cleaned at the end of the workday when high-volume cooking is being conducted and/or when grease accumulation exceeds 1/8 inch (3.175 mm) as measured by a depth gauge comb or other approved device.













