249. The emergency braking system of a hoist shall be designed so that the emergency brakes cannot be locked in the release position following opening of the safety circuit of the hoist, unless the service brakes exert their total force. It shall not be possible to close the safety circuit if the services brakes are not fully applied.
O.C. 213-93, s. 249; O.C. 1326-95, s. 51.