75
TRAK Machine Tools
Southwestern Industries, Inc.
TRAK 3ntr 3D Printers
–
Maintenance & Troubleshooting Manual
6.17
DC Fans
–
Inspect
Any DC fan (the small black fans you see on heat exchanger/motherboard area/extruders) must always
be running at 100% efficiency. Failing to comply with this requirement the printer may slowly fade into
overheating or even more difficult problems to diagnose.
Therefore:
•
Keep fans clear from cables or anything that can prevent fan rotation
•
If fan is showing slow/irregular rotation immediately replace it.
Sunon fans have proved so far exceptionally reliable
–
usually the connections are to be blamed for
malfunction, not the fan itself. Check that connection is working ok. In case of 1
st
gen printers (no Sunon
fans) you may eventually want to replace with more reliable/newer parts.
IMPORTANT -
Motherboard fan must be blowing TOWARD the motherboard (see pic)
Figure 6.17.1 Motherboard Fan Working Correctly (Green LED)