We have a grab ship unloader that is used for coal unloading from barges. This is a Chinese machine, so manual is in Chinese language.
Grabs' cables are slag, we tried to tight it by re-setting the grab. But there is a bit. There is a panel on this room and there are 4 push buttons mentioned as drum 1, drum2, drum4 and drum4. Grab has 4 drums, I believe these switches can use to rotate the drums separately. (Mentioned as CCW ans CW). But I don't know the procedure.
Can anyone tell me the procedure? I believe this should be international standard.