Down the chain is a little manual lifting 1 phase hoist, although simple to use but not necessarily everyone, inside knowledge or find many , there will inevitably be in the use of the card chain , brakes not working , chain 1 phase hoist slippage other issues , how to solve it ? 1 , to inspect the entire section down chain , identify the cause of the fault . For example , the card is due to the chain rusty chain caused ; brakes not working due to the detent spring loose and cause ; hand slipping because of the friction plate friction plate parts with oil or too thin lead . 2 , how to avoid these failures in the future ? Do routine checks to see whether the various parts parts rust , deformation, loosening ; regularly use oil to avoid rusting chain ; timely replacement of badly worn parts. That is difficult is not difficult, problems encountered in the use inverted chain will basically these types , as long as you are simple to master, all faults are clouds.