First, after power control Chain Hoist to move around , observe the arrow keys are correct, while paying attention to stop running up and down , if there is the sound of the brakes , stopped watching after another , when there is decline in the chain , and if so, explain the friction plate too loose, or not installed properly. After these no problem , click the up and down keys , observed running away, the smaller chain hoist , the better. Use Tips : In some factories or workshops, sometimes you need to run relatively small distances , such as installing or butt , you need to hoist slowly raised or lowered to facilitate calibration and installation , but the 3 ton Electric Chain Hoist mostly single speed , double speed sometimes slow speed can not meet the installation , this time you can press the button a little way , that tap stopped , time is very short , so a relatively small range of movement can be calibrated once , and so after each tap, the equipment installation was successful. This is why the choice of electric chain hoist lifting when clicking to check the reasons of distance, the landing distance as small as possible in principle .