D2-series electric hoist is designed based
on the latest EU standard EN 14492-2, and its structure is different from that
of D-series electric hoist. The standard requires that there shall leave two
turns of wire rope on the drum when the load is at the lowest position, and D2-series
meet such standard via its planetary reducer (2). In case of mass production or
wire rope replacement, adjust the planetary reducer to make sure that the Lower
limit lever(3) would be activate to stop the electric hoist when there are two
turns of wire rope on the drum.