a self - cleaning system for use with a filter having a fluid inlet station , including a manifold mountable at least for reciprocation along an axis with respect to said filter and comprising at least one suction opening adapted to be in proximity to said station and connectable to a suitable suction source for enabling foreign material to be removed from said filter when said system is installed and in operation with respect to said filter ; fluid powered motive means for propelling said manifold along said axis ; and a reciprocating mechanism for alternately changing the direction of motion of said manifold along said axis .