1,During operations, try to keep the balance of suspended matter, slewing crane structure turns are not allowed to be lifting, prevent the wire rope out of the groove.

2,Prohibited jib crane mainly stay in the air for a long time,when lifting heavy loads,the operator shall not leave.

3,Prohibited two cranes lifting the same goods at the same time.

4,Prohibited to use the stop as a switch

5,Prohibited the power wire of the control button around in the wire rope of the hoist.

6,Prohibited had oil and moisture on the control button switch,it also is forbidden to knock the switch of the button.

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