b'LT ENGINEERINGCATALOGMAINTENANCEOne of the most important features for the successful operation of the grease interceptor is the maintenance program. Regardless of the size or design, an interceptor is only as good as its maintenance program. The interceptor should be located so that it will be easily accessible for inspection, cleaning and removal of collected FOG. The interceptor should be located near the source of the wastewater for the protection of the piping system. There should be an adequate number of access manholes to permit access for cleaning all areas of the interceptor. Access manholes should be located near the inlet and the outlet. The manholes should not be less than 20 inches in size. All manholes should extend to grade and be suitable for traffic loading for indoor and sensitive areas.The grease interceptor should be cleaned (or pumped out) routinely to insure grease detention performance. Cleaning should be performed when the interceptor is at 75 percent of grease retention. The frequency of cleaning at any given installation will vary depending on use. Pumping frequencies for restaurants range from 30 to 90 days. Most AHJs have minimum requirements for pump out and require pump out manifest records be maintained for review by local health departments. Typically, pump out companies are required to be registered with the states water quality agency.238 INFO@PARKUSA.COM|888-611-7275|WWW.PARKUSA.COM'