The selected power source is three-phase four-wire 380V/50Hz.It should be Commected with zero line to confirm the rotation direction.Meantime this equip Ment is required to be connected with ground.Loosen the handle(1),cut angle position the cut angle,tightly press the air Cylinder(2),it can be seinged left and right.Open the hand-operated air valve(3),air cylinder(2),i.e.Tightly press the Machining aluminium materials,shut(3),then loosen is.Move the length positioning(4),the machining aluminium materals can be confirmed then.Step down the pedal switch(5),the corner can be cut then.