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• Thestraingaugesmayhavebeeninstalledtensed.Proceedasfollowstocheckthis(nolament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-

ence should not be more than 10 digits.

 Ifyound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lament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lament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specied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lamentsupplybreaksofforthereisnotenoughlamentmaterialsupplied:

• Checkthelamentontheroll.Itmustunrolleasily.

• Checkifthelamentmaterialhascaughtonthelamentroll.

• Thesetextrudertemperatureistoolowforthelamentmaterialused.Thefeedknurlslipsatthelament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ledownthemotoraxisintheareaofthegrubscrewtoreduceslippage.

• Checkthatthelament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lament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lament

is extruded.

• Lettheextrudercooldowntojustbelowthemelttemperaturespeciedbythemanufacturerforthelament(lamentmaterialmustonly

beviscousanymore)andcarefullyactuatethemanualfeedbackwardsuntilthelamentwithcontaminationhasbeenremovedfromthe

extruder.Cutoffthecontaminatedpartofthelament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-

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.

Renkforce RF2000 v2 Series User Manual

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