76
TRAK Machine Tools
Southwestern Industries, Inc.
TRAK 3ntr 3D Printers
–
Maintenance & Troubleshooting Manual
6.18
Extruder Gain
–
How to Find
The cornerstone of a good printing is control of temperature. Since 2016, all machines are delivered with
calibrated heaters. If you
can’t
tell the serial number of your heater(s) you can still compute the gain by
yourself with this procedure:
1)
Remove front panel to reach upper extruder area (tube adapters)
2)
Move Z at 50
3)
Bring extruders at middle, front area
4)
Remove filament from selected extruder
5)
Remove PTFE piping
6)
Set gain to 1. Save configuration, using LCD functions.
7)
Using Repetier Host (PC USB connection) or any browser (if you are using the print server option) set
the desired extruder to 240° C
8)
Manually feed some ABS filament and be sure to see some filament being extruded out of the
nozzle
9)
Remove filament, put the temperature probe fully down into the extruder
10)
Let temperature to settle for one minute, then read the temperature on probe display
11)
Gain value (n) is obtained with following formula:
Ts = set temperature (240°C)
Tr = temperature probe readout (I.e..: 232°C)
n = Tr / Ts = 232 / 240 = 0,96
12)
Set gain of selected extruder and save it using LCD function.
CAUTION
- Use ONLY the probes and display supplied from 3ntr to avoid any malfunction
6.19
DC Power Supply Test
Power supply is delivered to be feeding power at 24Vdc +/- 0.3V: you can test it with a multimeter on (+) and
(-) poles of the power supply or on motherboard screw terminals. (as shown). Should you get out-of-
tolerance reading, you can adjust it with the trimmer on power supply.
NOTE
- This is a VERY RARE condition and you must report if you experience this
–
chances are your
power supply is defective: perform repeat measurements during a few hours to assess part sanity.
