User's Manual
Table Of Contents
- Operating & Maintaining the Connex500/350 3-D Printer
- Starting the Connex Printer
- Loading Model and Support Cartridges
- Producing Models
- Resuming Production After Printing has Stopped
- Changing the Model Material
- Keeping the Connex Printer in Idle Mode
- Shutting Down the Connex Printer
- Maintaining the Connex Printer
- Routine Maintenance Schedule
- Cleaning the Print Heads
- Pattern Test
- Improving Print Quality
- Cleaning and Replacing the Wiper
- Cleaning the Roller Waste Collector and Inspecting the Roller Scraper (Knife)
- Replacing the Roller Scraper (Knife)
- Aligning the Print Heads
- Calibrating Print Heads
- Replacing Print Heads
- Testing and Calibrating the UV Lamps
- Calibrating the Load Cells
- Replacing the Odor Filter
- Replacing the UV Lamps
- Built-in Tests
- Replacing the Waste Container
- Cleaning the Exterior Panels
- Handling Printed Models
Operating & Maintaining the Connex500/350 3-D Printer
7–40
DOC-13000 Rev. E
Replacing
Print Heads
Theconditionoftheprintheadsdirectlyaffectsthequalityofprinted
models.Youneedtoreplaceaprintheadifoneormoreofthefollowing
symptomsoccurs:
• TheHeadOptimizationwizarddeterminesthatoneormoreprint
headsaredefective.(See“CalibratingPrintHeads”onpage 34.)
• Therearenoticeablegroovesinthesurfaceofprintedmodels.
• Visualinspectionoftheheadrevealsthatitssurfaceisdamaged—
peelingorbubblesinthenozzlearea.
• TheConnexinterfacedisplaysawarningormalfunctionmessage
relatingtoaprinthead—
HeadHeatertemperaturetimeout
HeadHeaterthermistoropen
HeadHeaterthermistorshort
TheHeadOptimizationwizardguidesyouthroughtheprocedureof
replacingaprinthead,andadjustscomponentsoftheConnexprinterto
enableyoutoperformit.Onlyreplaceaprintheadwiththeaidofthe
wizard.Theproceduretakes75—90minutes,andconsistsofthefollowing
phas
es:
A. Identifyingthehead(s)needingreplacement.
ThisisnormallydonebytheHeadOptimizationwizard.Otherwise,
evidenceofphysicaldamagetotheheadsurfaceoramalfunction
messageindicateswhichheadneedsreplacing.
B. Preparingtheprintblockforheadreplacement.
Thisisdoneautomaticallywhenyourunthewizard.
C. Removingthedefectiveprinthead
.
D. Installinganewprinthead.
E. Optimizingtheprintheads(doneautomaticallybythewizard).
F. Performingheadalignment.
To replace a print head:
1. Prepare—
• replacementprinthead(s)
• isopropanol(IPA—isopropylalcohol)orethanol(ethylalcohol)
• disposablesafetygloves(includedintheheadreplacementkit)
• anObjet‐suppliedcleaningclothorequivalent
• aflat‐headscrewdriver(5mm)
• thescalesuppliedbyObjetforuseintheWeightTest
Note: Make sure that you have these items before running the wizard.
2. StarttheHeadOptimizationwizardfromtheOptionsmenuofthe
printerinterface(seefigure 7‐48onpage 35).
3. Intheopeningwizardscreen,clickNexttobegin.
Replacing print heads is expensive. Replace them only after consulting with
an Objet-authorized customer-support engineer.