R 408.18130 Vertical batch mixers.

Rule 8130. (1) A bowl locking device on a vertical batch mixer, including an artoflex mixer, shall be designed to require a positive action of the operator to unlock the bowl. (2) If an employee can reach into a vertical mixing bowl, a warning sign shall be installed to caution the employee. (3) A mixer with a built-in power unit shall have all drive elements enclosed in such a manner as to prevent injury to an operator or a maintenance employee performing his or her normal duties. (4) A mixer shall be equipped with an individual motor and control, and with a conveniently located manual switch, to prevent the mixer from being started in the usual manner while the machine is being serviced and cleaned. (5) A loose access door and cover weighing more than 2 pounds shall not be used on a mixer. The door or cover shall be hinged or otherwise held in proximity to the openings that they cover. (6) An overhead cover or door that is subject to accidental closure shall be counterbalanced to remain in an open position, or shall be provided with a means to hold it open until positively released by the operator. (7) An electrical pilot or control circuit shall not be employed at a potential in excess of 240 volts. (8) A device shall be made available for moving a bowl, weighing more than 80 pounds with contents, into and out of the mixing position of the machine.