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• The strain gauges may have been installed tensed. Proceed as follows to check this (no filament must be inserted):
Note the measured value of the strain gauges. This is the value "F" (6) in the main menu. It is indicated in "digit". Push the extruder carriage
or the strain gauges and the extruder holder from above and below, from the left and right. After the value has changed when pushing, it must
approximately return to the starting position. The difference from the output value should not be more than 10 digits.
Next, push the extruder carriage from the left to the right bit by bit. The DMS value should be about the same in each Y-position. The differ
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ence should not be more than 10 digits.
If you find in one of the two tests that the value deviates too far, release all screws of the strain gauges and then tighten them again evenly.
No filament must be inserted for any of the tests and when releasing the screws!
The print has defects:
• Check the extruder and printing plate temperature settings. They must match the filament material and print object. Experiment with the
temperature settings in steps of 5 °C for a prefect print result.
• Only start the print when the extruder and the printing plate have reached the specified temperature.
• The distance between the printing plate and extruder is set incorrectly. Perform Z calibration or set the distance more precisely when starting
the print using the buttons at the 3D printer.
• When printing from the PC, do not use any other programmes requiring high computing power. Virus scanners and downloads may also
impair signal transfer to the 3D printer. Try performing the same print from the SD card to ensure that the USB connection is not the cause of
the problems.
The filament supply breaks off or there is not enough filament material supplied:
• Check the filament on the roll. It must unroll easily.
• Check if the filament material has caught on the filament roll.
• The set extruder temperature is too low for the filament material used. The feed knurl slips at the filament material.
• Check if the feed knurl slips on the motor axis of the extruder motor. The grub screw may have come loose. If the feed knurl slips in spite of
the grub screw being tightened, slightly file down the motor axis in the area of the grub screw to reduce slippage.
• Check that the filament material runs into the extruder from above cleanly. It must be able to run past the extruder motor from above and
into the bore of the extruder without scraping or clamping anywhere. If this is not the case, loosen the screws of the extruder holder and the
screws at the feed basic part and align the parts so that the filament is cleanly inserted into the extruder.
• The extruder-nozzle is clogged. Heat up the extruder and actuate the manual feed forward and backward several times until enough filament
is extruded.
• Let the extruder cool down to just below the melt temperature specified by the manufacturer for the filament (filament material must only
be viscous anymore) and carefully actuate the manual feed backwards until the filament with contamination has been removed from the
extruder. Cut off the contaminated part of the filament and reinsert it after heating up the extruder again.
Printing stops during the process:
• Check the settings of your computer. It must not switch to standby mode while printing (energy option settings) or simply shut down (instal
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lation of software or software updates during printing).
• If the value measured by the printing sensors at the extruder exceeds a threshold, the printer will automatically switch to pause mode for
reasons of safety. Printing can be started again by pushing the button for continuing printing (play button). If this happens frequently, the print
sensors are installed under tension. In this case, loosen the screws of the print sensors and then retighten them evenly.
