5.0 Intro to the Prot Purge Procedure (PPP)
When purging your Prot’s extrusion system there are two types of purging depending
on what you wish to achieve. They are:
1. Short Purge: Required when transitioning between wet and dry plastic or color changes.
Please see section 5.1.1 for instructions on how to conduct a Short Purge.
2. Disco Purge: Required when conducting a materials change. Please refer to section
5.1.2 for instructions on how to Disco Purge.
Please be sure to abide by all safety precautions outlined in the main user manual.
For further details on different purge conditions and temperature settings please refer to the
Appendix in section 7.0, Table 2 of this document.
5.1 Purging
The following steps will guide you through purging from a cold-powered-down-hopper empty
Prot state. Be sure to have a set of pliers or tweezers and nozzle wrench (if needed)
ready.
All temperature settings for purging are found in the Appendix, section 7.0 of this document.
5.1.1 Short Purge
1. Power on your Prot and connect to the PCC software. Pour the new plastic you
wish to extrude into your Extruder Hopper. While connected to the PCC begin manual
extrusion.
2. Enter the command “pl000000” in the command line and click “Enter Command”. This
will assure the lower auger speed limit has been disabled.
3. Manually set the temperature using the PCC slider to the preheat temperature (in
accordance with Table 1).
4. Set the auger speed to ~40% of its range using the PCC slider.
5. When the preheat temperature is achieved, wait 100 seconds for the melt section to
reach a uniform temperature and viscosity.
6. Once Step 5 is complete, increase the temperature slider to the appropriate purge
temperature.
7. When purge temperature is achieved, increase the auger speed to ~75% of its range on
the slider. Purge for ~10-15 minutes at the designated purge temperature and auger
speed until fully transitioned to new plastic. Purge time may take longer depending on
the material.
8. Material will start flowing and dump into the Garbage Shoot. Remove the side door to
clear the material inside. Be careful, the melted plastic is quite hot if it does not have
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Summary of Contents for ProtoCycler+
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