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Maintenance
Changing the Nozzle:
Before attempting this operation, ensure you use heat-insulated gloves. To switch
between nozzle sizes, heat the unit to the temperature required to melt the
material previously used. Wait for 10 minutes to ensure all material is molten.
Unscrew the nozzle using a spanner, clean any excess plastic from the internal
threads, and then screw on the new nozzle.
Maintenance:
Regular cleaning of your plastic extrusion tooling is crucial for prolonging
machine life, reducing waste, and maintaining tighter tolerances for your final
product. We recommend running purging agents like polypropylene through the
barrel for cleaning. If this is not possible, use a wire brush and fine metal pick to
clean the threads and screw assembly. If you are unsure how to clean the barrel,
please contact the Noztek helpdesk for assistance.
Barrel Jam:
Depending on the resin type, you may occasionally encounter a barrel jam. If the
motor starts laboring and slowing down during extrusion, immediately switch off
the motor. To free the jam, increase the temperature to approximately 25-50
degrees Celsius above the recommended melting temperature of the material
and leave it for 15–20 minutes. Then switch on the motor again; this should allow
the screw to rotate, purging the barrel.
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