The new installation of electric chain hoist 500kg or the electric hoist installed after dismantling should first be tested for empty vehicles several times, but before the installation is completed, it is forbidden to turn on the power. Before normal use, the static load test shall be carried out at a rated load of 125% and lifted from the ground by about 100 mm for 10 minutes to check whether it is normal.
The dynamic load test of the electric chain hoist 500kg is the rated load weight. Repeated lifting and left and right movement tests are carried out during the operation. After the test, the mechanical transmission part, the electrical part and the connecting part are checked for normal and reliable. In use, it is absolutely forbidden to use in an unacceptable environment and in excess of the rated load and the number of rated closings per hour (120 times).
When installing and debugging electric chain hoist 500kg, it is necessary to strictly check whether the limit device is flexible and reliable. When the hook is raised to the upper limit position, the distance from the hook casing to the reel casing must be greater than 50mm (10t, 16t, 20t must be More than 120mm). When the hook is lowered to the lower limit position, the wire rope safety ring on the reel should be ensured, and the effective safety ring must be more than 2 turns.
The 500kg electric hoist is not allowed to simultaneously press two flashlight button that moves the electric hoist in the opposite direction.
After the work is completed, the main gate of the power supply must be pulled off to cut off the power. The electric hoist should be operated by a special person, and the operator should fully grasp the safety operation rules.