R 408.17143 Extractors.

Rule 7143. (1) A rotating extractor shall be equipped with a metal cover interlocked in a manner so as to prevent opening it when the basket is in motion or to prevent power operation of the basket when the cover is open. (2) A rotating extractor shall not be operated at a speed in excess of the rated speed, which speed shall be permanently marked on the machine. Where the rated speed is not available, table 1 shall be followed: (3) A rotating extractor shall be: (a) Equipped with a braking device. (b) Secured to the floor or foundation to prevent lateral movement. (c) Loaded in a manner to keep the extractor in balance. (d) Inspected not less than once a year at points of wear such as, but not limited to, the basket, rings, and cover, and repaired where defects that are a hazard are found. (4) A squeeze extractor shall be equipped with: (a) A cover interlocked to the compacting mechanism which shall prevent the removal of the cover until the pressure has been relieved. (b) A 2-hand control device which shall be operated concurrently to activate the cover placement. (5) A steam, hydraulic, or pneumatic-type squeeze extractor shall be equipped with a pressure relief valve set to open if the applied pressure is 10% more than the maximum rated operating pressure. The maximum operating pressure shall be permanently labeled or marked on the machine. (6) Table 1 reads as follows: TABLE 1 30-inch diameter extractor -- 1200 r.p.m. 40-inch diameter extractor -- 900 r.p.m. 48-inch diameter extractor -- 750 r.p.m. 60-inch diameter extractor -- 500 r.p.m.