When the screw does not reach the preset temperature, do not start the machine 0.2 to prevent metal fragments and debris from falling into the hopper. If processing the recycled material, it is necessary to add a magnetic hopper to prevent iron filings from entering the cylinder 0.3. Make sure that the plastic in the barrel is completely melted so as not to damage the transmission system parts 0.4 when the screw retreats.
When using the new plastic, the remaining material of the screw should be cleaned 0.5.
When the temperature of the molten plastic is normal but the black spots or discoloration of the molten plastic are found continuously , should check the plastic screw 0.6, in the processing, try to make the material plasticized evenly, do not let the metal foreign matter mixed into the material, reduce the torque of the screw rotation.