Stratasys J850 User Manual
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Stratasys J850 User Manual

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User Guide
Stratasys J850/J835
3D Printing System
DOC-18001 Rev. N

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  • Page 1 User Guide Stratasys J850/J835 3D Printing System DOC-18001 Rev. N...
  • Page 2 Copyright © 2006–2022 Stratasys Ltd. All rights reserved. This documentation contains proprietary information of Stratasys Ltd. This information is supplied solely to assist authorized users of Stratasys J850/J835 3D printing systems. No part of this document may be used for other purposes.
  • Page 3 This product is covered by one or more of the following U.S. patents and other granted or pending patents. 7,209,797 7,364,686 7,369,915 7,500,846 7,604,768 7,658,976 7,725,209 7,896,639 7,958,841 7,991,498 7,996,101 8,219,234 8,278,866 8,323,017 8,469,692 8,781,615 8,865,047 8,932,511 9,017,589 9,020,627 9,031,680 9,227,365 9,662,834 10,632,679 10,828,905 10,894,399 10,940,616 10,994,475 Stratasys Ltd. www.stratasys.com DOC-18001 Revision N December 2022 DOC-18001 Rev. N...

  • Page 4: Table Of Contents

    1 About This Guide Using This Guide Revision History Terms Used in This Guide Stratasys Online Resources Stratasys Academy Stratasys Support Center Stratasys Academy YouTube Channel GrabCAD Community 2 Safety Safety Features Symbols and Warning Labels Safety Guidelines Printer Installation...
  • Page 5 Workstation Requirements 4 Operating and Maintaining the Printer Starting the Printer Loading Model and Support Cartridges Producing 3D Prints Preparing the Printer Preparing the Build Tray for Printing on Fabric (3DFashion Technology) Removing Fabric from the Elevated Build Tray 4-17 Starting Printing 4-18 Printer Interface Color Key...
  • Page 6 Dynamic Nozzle Test 4-134 Built-in Tests 4-136 Replacing the Waste Container 4-142 Cleaning the Exterior Panels 4-144 Cleaning the UV Screen 4-144 5 Handling Printed Models Removing 3D Prints After Printing Removing the Support Material Removing Support by Hand Removing Support with Water Pressure Removing SUP705/705B with Caustic Soda Removing SUP706/706B with Caustic Soda and Sodium Metasilicate Post-Printing Treatment...
  • Page 7 About This Guide Using This Guide Revision History Terms Used in This Guide Stratasys Online Resources Stratasys Academy Stratasys Support Center Stratasys Academy YouTube Channel GrabCAD Community DOC-18001 Rev. N...

  • Page 8: About This Guide

    Important: Read the entire Safety chapter before using the system. The text and figures in this guide are based on the J850 3D printer, software versions D78.1 - 85.2.0; D83.1 - 84.01.0.

  • Page 9: Revision History

    Stratasys J850/J835 User Guide 1 About This Guide Revision History Translations of this guide are updated periodically. If you are consuming a translated version, please check the English version for the latest revision and list of updates. The following table lists the main changes in each revision of this document.
  • Page 10 • For More Information was removed. • Additional Resources was renamed to Stratasys Online Resources and updated to include information about the Online Stratasys Academy including the Stratasys Academy YouTube Channel.
  • Page 11 Stratasys J850/J835 User Guide 1 About This Guide Revision Release Date Description Rev. M December 2022 • Preparing the Build Tray for Printing on Fabric was updated to correct the Fire Hazard warning and the micron to mm conversion. • Removing Fabric from the Elevated Build Tray was updated.

  • Page 12: Terms Used In This Guide

    Printer The GUI (graphical user interface) used for controlling J850/J835 interface printers. Printer Software running on the computer in the J850/J835 printer, controlling software, all printer operations. printer-control application Resin The base substance from which photopolymer printing materials are made for use in Stratasys PolyJet printers.

  • Page 13: Stratasys Online Resources

    1 About This Guide Stratasys Online Resources Stratasys encourages you to learn more about additive technologies and your Stratasys printer. A wealth of information is available on our online platforms. Subscribe to our customer newsletter for quarterly updates on Stratasys knowledge and training.

  • Page 14: Stratasys Support Center

    Stratasys printers. The channel includes dedicated playlists for different printers and special topics like post-processing. Make sure to check out this new Stratasys Academy Channel and remember to subscribe! DOC-18001 Rev. N...

  • Page 15: Grabcad Community

    1 About This Guide GrabCAD Community Tutorials section of the GrabCAD Community portal is a valuable resource for Stratasys-sponsored and user-generated 3D printing tips. You can also ask 3D-related questions on the portal and download free CAD files. DOC-18001 Rev. N...

  • Page 16: Safety

    Safety Safety Features Symbols and Warning Labels Safety Guidelines Printer Installation Printer Operation UV Radiation Printer Maintenance Model and Support Materials UV Lamps First Aid for Working with Printing Materials Contact with Skin Contact with Eyes Ingestion Inhalation Waste Disposal DOC-18001 Rev.

  • Page 17: Safety Features

    Stratasys J850/J835 User Guide 2 Safety Safety Features Stratasys 3D printers are designed to comply with CE and FCC standards. They are equipped with the following safety features: Interlock Switch The power supplied to the UV lamp, the tray heater and the motion motors is turned off when the cover is opened.
  • Page 18 Stratasys J850/J835 User Guide 2 Safety Figure 2-1 Front view of the printer Circuit Breaker The power to the printer is turned off in case of electrical overcurrent. Note: The circuit breaker is only accessible to service personnel. UV-Lamp Overheating...

  • Page 19: Symbols And Warning Labels

    Stratasys J850/J835 User Guide 2 Safety Symbols and Warning Labels The following table lists the warning labels located on or in the printer. Warning Symbol Meaning Location Comments Hazard (general) On the name plate on Read the instructions in the back of the printer.

  • Page 20: Safety Guidelines

    Stratasys J850/J835 User Guide 2 Safety Safety Guidelines The following general guidelines, together with the instructions provided throughout this user guide, ensure user safety while operating and maintaining the system. If the system is not operated as specified, the user's safety may be compromised.

  • Page 21: Uv Radiation

    The UV lamps used in the printer emit dangerous radiation ➢ If the UV lamps remain on when the printer is open, do not stare directly at the UV light. Shut down the printer and call your Stratasys service provider. Printer Maintenance ➢...

  • Page 22: Uv Lamps

    Stratasys J850/J835 User Guide 2 Safety ➢ Dispose of contaminated shoes, belts and other leather items in accordance with any applicable regulations. Absorbed printing material may re-expose the user when these items are worn. UV Lamps UV lamps used by the printer to cure printing materials contain a small amount of mercury.

  • Page 23: First Aid For Working With Printing Materials

    Stratasys J850/J835 User Guide 2 Safety First Aid for Working with Printing Materials In general, try to avoid direct contact with uncured printing material. If skin or eyes come into contact with it, wash the area immediately and thoroughly with water, and follow these first-aid instructions.

  • Page 24: Inhalation

    Stratasys J850/J835 User Guide 2 Safety Inhalation Vapors from printing materials can be irritating to the respiratory system. If respiratory irritation occurs, expose the victim to fresh air immediately. ➢ If the victim has stopped breathing, perform artificial respiration or cardiopulmonary resuscitation.
  • Page 25 Stratasys J850/J835 User Guide 2 Safety UV Lamps UV lamps used by the printer to cure printing materials contain a small amount of mercury, and are considered “Universal Waste.” Recycle or discard used lamps in accordance with applicable regulations. Broken lamps:...

  • Page 26: Introducing The 3D Printer

    Introducing the 3D Printer Basic Features Work Configurations Source Files Printing Materials Storage Shelf Life Exposure to Light Safety Considerations Disposal Work Environment Workstation Requirements DOC-18001 Rev. N...

  • Page 27: Basic Features

    Stratasys J850/J835 User Guide 3 Introducing the 3D Printer Basic Features Stratasys J850/J835 printers offer the following options: • You can streamline and economize the process of producing 3D prints. ❒ Producing 3D prints made from different materials on the same build tray (“mixed tray”), in the same print job, eliminates the time-consuming...

  • Page 28: Work Configurations

    3 Introducing the 3D Printer Work Configurations Stratasys J850/J835 3D printing systems can be set up as single-station systems or as multi-station systems. When connected to a local computer network, the system can serve multiple users. In such configurations, each user (client) prepares files for production.

  • Page 29: Source Files

    GrabCAD Print supports native CAD formats from these programs: Creo, SOLIDWORKS, NX, CATIA and Inventor. To see the complete list of file formats supported by GrabCAD Print, go to: help.grabcad.com/print/file- formats. J850/J835 systems feature the capability of producing different types of files simultaneously. DOC-18001 Rev. N...

  • Page 30: Printing Materials

    3 Introducing the 3D Printer Printing Materials Stratasys J850/J835 printers produce 3D prints by jetting thin layers of printing materials on the build tray, until the complete 3D print is formed. Two types of material are used in this process: •...

  • Page 31: Safety Considerations

    Work Environment Extreme heat and humidity conditions can adversely affect the operation of your J850/J835 3D printer. Use ventilation or air-conditioning systems, if necessary, to keep the work area within the following ranges: • 18°–25° C (64°–77° F) •...

  • Page 32: Operating And Maintaining The Printer

    Operating and Maintaining the Printer Starting the Printer Loading Model and Support Cartridges Producing 3D Prints Preparing the Printer Preparing the Build Tray for Printing on Fabric (3DFashion Technology) 4-7 Removing Fabric from the Elevated Build Tray 4-17 Starting Printing 4-18 Printer Interface Color Key 4-19...
  • Page 33 Aligning the Print Heads 4-60 Cleaning the Print-Head Splash Shield 4-66 Optimizing (Calibrating) Print Heads 4-68 Replacing Print Heads 4-76 Testing and Calibrating the UV Lamps 4-86 Calibrating the Load Cells 4-95 Flushing the Print Block Pre-Heater 4-96 Replacing the Waste-Pump Tubes 4-103 Replacing the Material Filters 4-110...

  • Page 34: Starting The Printer

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Figure 4-1 The Stratasys J850/J835 3D Printer Starting the Printer Caution Do not attempt to operate the printer before being trained by an authorized Stratasys representative. Observe all safety warnings and follow the safety guidelines described in Chapter 2.
  • Page 35 Stratasys dealer or service provider. All monitoring and controlling of the printer is done from this interface. The figures in this guide are based on the J850/J835 printer interface. For J850 Digital Anatomy printers, the name of the printer appears in the printer...

  • Page 36: Loading Model And Support Cartridges

    4 Operating and Maintaining the Printer Loading Model and Support Cartridges The number of material cartridges loaded in J850/J835 printers depends on the active printing mode. • In High Mix / High Quality mode, you can use up to 14 cartridges of model material and two cartridges of support material.

  • Page 37: Producing 3D Prints

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Producing 3D Prints 3D prints can be produced after they are arranged on the virtual build tray in the GrabCAD Print application. For information about preparing files for printing, see the GrabCAD Print online documentation.

  • Page 38: Preparing The Build Tray For Printing On Fabric (3Dfashion Technology)

    Figure 4-4 Printer status Preparing the Build Tray for Printing on Fabric (3DFashion Technology) When printing with J850 printers that are enabled by 3DFashion technology, you need to place the fabric on the build tray and secure it. Tray type, fabric type, thickness, size, and printing material can affect the build tray preparation process.
  • Page 39 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer To prepare the build tray for printing on fabric: 1. Prepare— ❒ a piece of fabric with the following dimensions For the elevated tray: • Minimum size: 510 mm x 410 mm (20.1 in x 16.1 in) •...
  • Page 40 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 4. Start the Fabric Preparation wizard from the Options menu. Figure 4-5 Options > Wizards menu 5. In the screen that appears, click Next. 6. Select the action that you wish to perform: Figure 4-6 Selecting to set fabric thickness or print carpet ❒...
  • Page 41 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 7. Verify that the build tray is clean, and close the cover. Confirm this in the wizard screen and click Next. Figure 4-7 Confirming tray is clean and cover is closed A carpet is printed on the printable area of the tray (not all the way to the edge of the tray).
  • Page 42 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 10. Measure the fabric thickness using a micrometer, ABS digital thickness gauge, Figure 4-10 Measuring the fabric thickness Note: To convert from microns to millimeters, divide the value by 1000 (for example: 1000 microns = 1 millimeter).
  • Page 43 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 12. Verify the build tray is clean and close the cover. Confirm this in the wizard screen and click Next. Important: Do not remove the carpet and double-sided adhesive tape.
  • Page 44 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 16. If you printed a carpet, add the double-sided adhesive tape as follows: a. Using a rubber hand roller, place the double-sided adhesive tape on the carpet and ensure that it covers the entire tray surface.
  • Page 45 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 18. Push the loose fabric underneath the tray, if relevant. Figure 4-18 Pushing the loose fabric underneath the elevated tray (sample) 19. For elevated trays, select the frame according to the gap size between the tray and the inner edge of the frame: ❒...
  • Page 46 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Figure 4-20 Stretching the fabric on the non-elevated tray (sample) Note: If you are placing fabric on a double-sided adhesive tape, use a rubber hand roller, if necessary. 22. Close the printer cover.
  • Page 47 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 26. Click Done. Figure 4-23 Wizard completed 27. Open the cover and inspect the tray: a. Using the fabric insertion tool, push any loose fabric underneath the tray. Figure 4-24 Using the fabric insertion tool to tuck in excess fabric b.

  • Page 48: Removing Fabric From The Elevated Build Tray

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 29. After you send a print job, the following message appears: Figure 4-25 Confirmation of fabric preparation parameters (sample) ❒ To approve the parameters, click Yes. Printing begins immediately. ❒ To update the fabric preparation parameters, click No.

  • Page 49: Starting Printing

    J850/J835 printers use up to seven different model-material cartridges to produce 3D prints. In addition, a support-material cartridge is required. If additional cartridges are installed and they are not immediately needed for printing, the printer interface indicates this (see "Printer Interface Color Key"...

  • Page 50: Printer Interface Color Key

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Printer Interface Color Key The background colors in the printer indicator fields tell you at a glance whether or not the value or item is suitable or ready for printing.

  • Page 51: Printing Indicators

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Printing Indicators The printer interface screen changes when you send a print job to the printer, if the printer is online: • The mode changes from Pre-print to Printing. • The specific activity being performed is shown in the “current activity” field.

  • Page 52: Resuming Production After Printing Has Stopped

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Resuming Production After Printing has Stopped If the printing process is interrupted, the print manager stops sending slices to the printer. This can happen, for example, if the printing material runs out in the middle of a print job, and you do not replace the empty cartridge immediately.
  • Page 53 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 6. In GrabCAD Print, make sure that the correct slice number is entered in the dialog box. Figure 4-32 Slice confirmation in GrabCAD Print Figure 4-33 Printer interface after interrupted printing 7.
  • Page 54 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer depend on part size and structure, the model material used, ambient temperature and the length of the stoppage. If you cannot continue printing: 1. Cancel the job. In GrabCAD Print, in the Schedule screen (see above): ❒...

  • Page 55: Changing The Printing Material

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Changing the Printing Material Before producing 3D prints using a different type of printing material than is currently installed, run the Material Replacement wizard to flush the print block and feed tubes.
  • Page 56 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 4. Choose the configuration for producing 3D prints: ❒ 7 Materials (High Mix / High Quality) ❒ 3 Materials (High Speed) ❒ Single Material (Super High Speed) Figure 4-35 Material Replacement Options 7 Materials Each print head is loaded with two different materials.
  • Page 57 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 3 Materials Both sections of each print head are loaded with the same material. Figure 4-37 Three materials loaded in the print heads Up to three model materials are available, with high-speed printing.
  • Page 58 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 7. For Support material, select the number of cartridges to replace. ❒ In High Mix / High Quality and High Speed modes, you can print using one or two Support cartridges.
  • Page 59 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 10. Click Next to begin the material replacement process in the printer. The Cartridge Positioning screen appears, showing you the new location of all cartridges in the material cabinet. Figure 4-39 Cartridge placement Symbols: The correct cartridge is in this slot.

  • Page 60: Changing Model Materials Without Flushing

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Before printing, you need to run the Head Optimization wizard in these cases: • after replacing Vero with Digital ABS or Agilus30 model materials (and the reverse) • after changing the type of Support material (SUP705/705B/706/706B) •...
  • Page 61 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 3. When the Material Replacement Options screen opens, select the Replace materials without flushing check box and click Next. Figure 4-41 Replace materials without flushing 4. In the confirmation message that appears, click Yes to continue.
  • Page 62 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 5. In the Cartridge Positioning and Process Progression screen, click Start. Figure 4-43 Cartridge Positioning and Process Progression screen 6. Read the Warning message that appears, and click OK to continue.

  • Page 63: Advanced Settings

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Advanced Settings The Advanced Settings dialog box enables you to configure the Material Replacement wizard for special purposes. If necessary, click Advanced Settings in the Material Replacement Options screen before clicking Next.
  • Page 64 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 3. In the Material Replacement Options screen, Both cartridges is selected for each position. To print with only one of the cartridges, clear the check box and then select either the left (L) or the right (R) cartridge.
  • Page 65 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 4. After selecting the materials for the appropriate cartridge slots, the Cartridge Positioning screen appears. Place the cartridges in the materials cabinet as shown in this screen. Figure 4-48 Cartridge Positioning screen (High Speed mode)

  • Page 66: Keeping The Printer In Idle Mode

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Keeping the Printer in Idle Mode Between printing jobs, the printer can be left unused for up to one week. If the printer will not be used for more than a week, use the Shutdown wizard to automatically perform the procedures that must be done before turning off the printer (see "Shutting Down the Printer"...

  • Page 67: Setting The Cartridge Expiration Alert

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Setting the Cartridge Expiration Alert The printer application records the expiration dates for each loaded cartridge. You can display the Cartridge Expiration Date screen from the Options menu. Figure 4-50 Options menu...
  • Page 68 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Figure 4-52 Cartridge expiration alert indicator in main screen If this cartridge expiration indicator appears, you can display the Cartridge Expiration Date screen by clicking on it. To change the cartridge expiration alert at an earlier or later time, in the Cartidge Expiration Alert screen, enter the desired number of days, and click Save.

  • Page 69: Shutting Down The Printer

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Shutting Down the Printer You only need to shut down the printer if it will not be used for 30 days or more. Otherwise, the printer can remain on, in Idle mode. However, if there is a need...
  • Page 70 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Figure 4-53 Shutdown wizard, opening screen 2. Click Next. 3. Select the option corresponding to the length of time that the printer will not be used—less or more than 30 days.
  • Page 71 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 4. In the next screen, verify that the tray is empty and click Next. Figure 4-55 Tray status The shutdown procedure begins. Figure 4-56 Shutdown progress 5. Follow the instructions until cleaning is completed.
  • Page 72 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 6. When the final wizard screen appears, close the printer-control application and shut down the printer computer. Figure 4-57 Final Shutdown wizard screen 7. After the printer computer shuts down, turn off the main power switch at the back of the printer (see Figure 4-2 on page 4-3).

  • Page 73: Maintaining The Printer

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Maintaining the Printer Performing routine maintenance tasks is essential for getting satisfactory results from your printer. Perform the tasks at specified intervals. Routine Maintenance Schedule Frequency Task For More Information Before printing Clean the UV lamp lenses.

  • Page 74: Maintenance Counters

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Frequency Task For More Information Monthly, and after replacing Check the alignment of the print heads. See "Aligning the print heads Print Heads" on page 4-60. Monthly Remove and clean the print-head splash shield.
  • Page 75 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer If there is a maintenance task due, this is indicated on the main interface screen. Figure 4-59 Maintenance Required indicator If this indicator appears, you can display the Maintenance Counters screen by clicking on it.

  • Page 76: Uv Lamp Check

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer wiper replacement) are reset by clicking the reset button in the Maintenance Counters screen. UV Lamp Check A heat-sensitive label is fixed to the UV lamp covers as a warning against overheating.
  • Page 77 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Figure 4-62 Selecting Pattern Test 5. Click Yes in the Confirm dialog box to begin. Figure 4-63 Pattern Test confirmation 6. If the build tray is not clear, click No in the following dialog box.
  • Page 78 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer The printer prints a series of lines on the test paper (see next figure). Figure 4-65 Sample Pattern Test 7. Carefully inspect the test paper to see if there are missing lines.

  • Page 79: Backing Up The Printer Configuration

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Backing up the Printer Configuration It is recommended that you periodically back up the printer's configuration files. In case of printer malfunction or the need to re-install the software on the printer computer, parameters can be restored from the backup.

  • Page 80: Improving Print Quality

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Improving Print Quality If you suspect that print quality is poor, perform the Pattern Test (see "Pattern Test" on page 4-45). If the results are poor, use the following procedure to improve print quality.
  • Page 81 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer To clean the printer components: 1. Prepare— ❒ 90% isopropanol (IPA—isopropyl alcohol) or ethanol (ethyl alcohol) ❒ disposable cleaning gloves ❒ a supplied 3M sanding sponge ❒ a supplied cleaning cloth or equivalent ❒...
  • Page 82 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 4. When the following screen appears, open the printer. Figure 4-69 Wizard screen during cleaning tasks Warning: Hot Surface The print head orifice plates (bottom surface) may be hot. Do not touch them with your bare hands, and proceed with caution.
  • Page 83 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 8. Clean the orifice plates, with a back-and-forth motion. Use the mirror to make sure that you have removed all of the residue material. Figure 4-70 Cleaning the heads Once a month, remove and clean the print-head splash shield. (See step 4 on page 4-67.)
  • Page 84 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Note: When returning the waste collector to the purge unit, make sure to insert it as shown. 12. Inspect the wiper. If the wiper is scratched, torn or worn, or if you cannot clean it completely, replace it.

  • Page 85: Cleaning The Roller Waste Collector And Inspecting The Roller Scraper

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 16. When the roller is clean, select the confirmation check box in the wizard screen and click Next. Figure 4-73 Clean-roller confirmation The roller stops rotating when you click Next.
  • Page 86 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer To clean the roller waste collector: 1. Prepare— ❒ M2.5 and M2 Hex (Allen) keys ❒ disposable cleaning gloves ❒ 90% isopropanol (IPA—isopropyl alcohol) or ethanol (ethyl alcohol) ❒ cleaning cloth ❒...
  • Page 87 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 5. Loosen the two screws securing the suction tube on the print block. Figure 4-76 Lifting the suction tube 6. Lift the suction tube to secure it in a raised position.
  • Page 88 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 9. Clean the roller waste collector and the scraper blade surface using cotton swabs. Make sure to remove any remaining printing materials. Figure 4-78 Cleaning the roller waste collector Before replacing the covering, you can check the effectiveness of the roller scraper—see below.

  • Page 89: Replacing The Roller Scraper

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 2. Loosen the screws securing the suction tube. Figure 4-80 Positioning the suction tube 3. Lower the suction tube so that the hole in the panel behind the tube is visible, and tighten the screws to secure the tube.
  • Page 90 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 4. Remove the screws that secure the roller scraper assembly. Figure 4-82 Removing the roller scraper screws 5. Remove the scraper blade and discard it. Figure 4-83 Removing the old roller scraper blade 6.

  • Page 91: Aligning The Print Heads

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 7. Insert and tighten the roller scraper blade screws. Important: Tighten the screws in the order shown in Figure 4-85. Use the new screws supplied in the replacement kit Figure 4-85 Tightening the roller scraper screws 8.
  • Page 92 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 3. When the following screen appears, place the transparency on the build tray—next to the left and rear edges of the tray (see below). Figure 4-86 Transparency confirmation Figure 4-87 Positioning the transparency on the build tray 4.
  • Page 93 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer When you click Next, the printer prints the head alignment test on the transparency. When printing is finished, the following screen appears. Figure 4-89 Head Alignment wizard—steps 8–10 8. Open the printer and remove the transparency.
  • Page 94 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 9. For each column of lines, use a magnifying glass or loupe to inspect pairs of consecutive rows printed on the transparency to see where the vertical lines align. Figure 4-91 Comparing rows of alignment lines Note: It does not matter which pair of lines you inspect, since they were all printed by the same head.
  • Page 95 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 12. Click Next to display the next head alignment screen, and again select the number representing the most closely aligned vertical lines on the transparency for that print head. When you have finished aligning all of the heads, the following screen is displayed.
  • Page 96 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer The additional transparency test will show if the heads are now properly aligned, and—if not—the wizard will allow you to “fine tune” the alignment. ❒ For High Mix and High Speed modes, if the head alignment parameters were updated, you should "fine tune"...

  • Page 97: Cleaning The Print-Head Splash Shield

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Cleaning the Print-Head Splash Shield To prevent excess printing material from accumulating around the print heads, a splash shield is installed on the bottom of the print block. Remove the shield and clean it once a month, when cleaning the print heads (see "Cleaning the...
  • Page 98 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 4. Using a 2-mm hex (Allen) key, remove the screws to remove the splash shield. Figure 4-96 Print-head splash shield installed on the print block Figure 4-97 Removing the print-head splash shield Warning: Hot Surface The print head orifice plates (bottom surface) may be hot.

  • Page 99: Optimizing (Calibrating) Print Heads

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Optimizing (Calibrating) Print Heads The condition of the print heads directly affects the quality of 3D prints. To maintain optimum printing, you should routinely test the print heads, and calibrate them to the best working configuration possible by running the Head Optimization wizard every 300 hours of printing.
  • Page 100 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 2. Start the Head Optimization wizard from the Options menu. Figure 4-98 Starting the Head Optimization wizard 3. In the opening wizard screen, click Next to begin. The Wizard Conditions screen appears.
  • Page 101 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 6. In the following screen, make sure Optimize all print heads is selected, and click Next. Figure 4-100 Procedure selection screen 7. Select the printing mode for which you want to optimize the print heads and click Next.
  • Page 102 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 8. Make sure that the build tray is clear and clean, and confirm this in the wizard screen. Figure 4-102 Preparing for head optimization (1) When you click Next, a frame is printed on the build tray.
  • Page 103 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 10. When the following screen appears, open the printer and remove the Pattern Test paper. Figure 4-104 Enter Missing Nozzles screen 11. Carefully inspect the Pattern Test paper with the Missing Nozzles Ruler to see if there are missing lines.
  • Page 104 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 13. The wizard continues according to the number of missing nozzles you entered. ❒ If there are too many missing nozzles for acceptable printing, the wizard instructs you to replace the defective print head(s). You can do this now, or abort the wizard.
  • Page 105 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 15. After confirming all of the items listed in the wizard screen, click Next. Printing material (resin) is jetted from each head and its weight is automatically recorded. Then, the following screen appears.
  • Page 106 • Select Replace defective head(s) if you are prepared to replace the print heads now (see below). or— • Select Abort wizard if you want to replace the print heads at another time. Replace print heads only after consulting with an authorized Stratasys service provider. DOC-18001 Rev. N 4-75...

  • Page 107: Replacing Print Heads

    ❒ Head Heater temperature timeout ❒ Head Heater thermistor open ❒ Head Heater thermistor short Replace print heads only after consulting with an authorized Stratasys service provider. The Head Optimization wizard guides you through the procedure of replacing a print head, and configures printer components to enable you to perform it. Only replace a print head with the aid of the wizard.
  • Page 108 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer The entire print-head replacement procedure takes about 45 minutes, and consists of the following phases: A. Identifying the head(s) needing replacement. This is normally done by the Head Optimization wizard. Otherwise, evidence of physical damage to the head surface or a malfunction message indicates which head needs replacing.
  • Page 109 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 5. In the following screen, select Continue with Head optimization if you have recently cleaned the print heads. Otherwise, cancel the wizard and run the Cleaning wizard. Figure 4-112 Clean print heads screen 6.
  • Page 110 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer The printer heats and empties the print block, and prepares the printer. (This should take up to 15 minutes.) The following screen appears when the printer is ready for you to replace print heads.
  • Page 111 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 11. Loosen the screws that secure the driver-card bracket, and lower the bracket. Figure 4-117 Loosening the driver-card bracket screws 12. Release the driver-card support. Figure 4-118 Releasing the driver-card support DOC-18001 Rev.
  • Page 112 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 13. Remove the driver card by releasing the latch at the points shown. Figure 4-119 Releasing the driver-card latch 14. Release the upper and lower screws that secure the print head in the block.
  • Page 113 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 15. Press down on the upper and lower locking screws to release the print head, and remove it from the bottom of the print block. Figure 4-121 Releasing the print head 16.
  • Page 114 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Important If the seals are not removed with the head, they are probably stuck to the print block housing. If so, remove them. Figure 4-123 Making sure the O-rings are not stuck to the print block Installing the New Head 17.
  • Page 115 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 22. In the Replace print heads screen, select the check box to confirm that you have replaced the head(s), and click Next. Figure 4-125 Head replacement confirmation 23. With your fingers, make sure that the new head is level and even with the other heads.
  • Page 116 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 25. In the next wizard screen, confirm that you have removed all tools and objects from the printer. Figure 4-128 Cleared-tray confirmation screen 26. Close the printer cover. The wizard continues by heating the heads, then filling and purging them.

  • Page 117: Testing And Calibrating The Uv Lamps

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer ➢ If the replacement head was not calibrated by Stratasys, remove the head and replace it with another one. Figure 4-130 Invalid-head warning Contact your Stratasys service provider about the uncalibrated head.
  • Page 118 Figure 4-132 UV device selection UV Measuring Device When you use the Stratasys UV sensor box (TOL-03005-S), you connect it to the printer. The wizard automatically measures and calibrates the UV radiation. If you use a stand-alone UV radiation meter, you need to manually enter the readings from the meter in the wizard screens.
  • Page 119 4. Make sure that the build tray is empty. Confirm this in the wizard screen and click Next. Figure 4-133 Printer preparation ➢ When using a Stratasys UV sensor box that you connect to the printer (TOL-03005-S), continue with "UV Sensor Connected to Printer" on the next page.
  • Page 120 4 Operating and Maintaining the Printer UV Sensor Connected to Printer The following steps apply when using the Stratasys UV sensor box that you connect to the printer. They do not apply when using a UV external radiation measuring device.
  • Page 121 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 2. Click Next. The build tray lowers so you can connect the UV sensor box. Figure 4-136 UV sensor connector 3. Confirm the items listed in the wizard screen and click Next.
  • Page 122 External UV Meter The following steps apply when using a stand-alone UV meter. This section does not apply when using the Stratasys UV sensor box connected to the printer. 1. When the following screen appears, open the printer and place the UV sensor (probe) at the rear edge of the tray, in the center.
  • Page 123 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 6. Connect the cable from the sensor to the UV meter. 7. Turn on the UV meter, and wait until “0 0 0.0” appears on the display. 8. In the wizard screen, confirm that the sensor is positioned correctly, and click Next.
  • Page 124 Figure 4-140 UV measurement progress When using a stand-alone radiation meter (not the Stratasys UV sensor box connected to the printer): Reset the meter and enter the reading (measurement) when you are prompted to do so.
  • Page 125 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer If the UV level measured is not acceptable, the wizard calibrates the UV lamp by adjusting the current supplied to it, and then tests it again. When all UV tests have finished, the results are displayed, showing the condition of the lamps after calibration (see Figure 4-142 below).

  • Page 126: Calibrating The Load Cells

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Figure 4-144 Final UV Calibration Wizard screen Calibrating the Load Cells Load cells are sensors that measure the weight of the material cartridges and the waste container in the printer. It is important that you periodically check that the weight measurements are accurate to prevent unnecessary waste of printing materials or printer malfunctions.

  • Page 127: Flushing The Print Block Pre-Heater

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Figure 4-146 Weight stabilization 5. Select the check box, and click Next. 6. Click Done in the final wizard screen. Flushing the Print Block Pre-Heater When the printer is configured to print in High Speed mode, or in Super High Speed mode, the print-block pre-heater needs to be flushed periodically.
  • Page 128 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer You can postpone the automatic flushing process up to 2 times. After that you cannot print until the pre-heater is flushed. When printing in High Speed mode or Super High Speed mode for long periods of time, it is recommended to load cleaning fluid cartridges in the channels that are not in use to reduce material costs.
  • Page 129 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Select one of the options to continue: ❒ Click OK to flush the pre-heater and continue with step 2. ❒ Click Cancel if you do not wish to flush the pre-heater at this time.
  • Page 130 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer To flush the print-block pre-heater with the Material Replacement wizard: 1. From the Options menu, open the Material Replacement wizard. Figure 4-150 Opening the Material Replacement wizard 2. In the opening screen, click Next.
  • Page 131 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 4. In the Advanced Settings screen, select Manual slot selection and click Apply. Figure 4-152 Manual slot selection 5. When the Material Replacement Options screen opens again, select: ❒ 7 materials ❒...
  • Page 132 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 7. In the Cartridge Positioning screen, make sure that the material cartridges are properly positioned. Figure 4-154 Cartridge Positioning screen Symbols: The correct cartridge is in this slot. No cartridge (or the incorrect cartridge) is in this slot.
  • Page 133 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Figure 4-155 Material Replacement Options selection 3. Click Next. 4. In the Cartridge positioning screen, make sure that the material cartridges are properly positioned. Note: The time needed to complete this process depends on the materials currently loaded in the printer.

  • Page 134: Replacing The Waste-Pump Tubes

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Replacing the Waste-Pump Tubes The tubes that pump waste material from the roller waste collector and the purge unit should be replaced after 1000 hours of use. After this time, the printer software sends a maintenance alert to display on the printer interface screen.
  • Page 135 To replace pump tubes, you replace the entire pump "cassette" in the printer. Replacement cassettes are supplied in the printer Start-up Kit. Additional cassettes can be ordered from your Stratasys service provider. To replace the waste pump tubes: 1. Prepare—...
  • Page 136 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 4. Open the panel and disconnect the ground (earth) wire. Figure 4-160 Ground wire connected to panel 5. Remove the panel. 6. Identify the waste pump that requires tube replacement.
  • Page 137 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 8. Disconnect the fittings: a. Unscrew the fittings that connect each waste-pump tube. b. Separate the tubes and put them into the disposable cup to catch material that spills. Figure 4-162 Disconnecting pump tubes 9.
  • Page 138 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 11. When the tubes on both sides of the pump are disconnected, rotate the pump "cassette" counter-clockwise and remove it. Figure 4-164 Rotating the pump cassette (sample) 12. Holding a new pump cassette with one hand, rotate the rotor.
  • Page 139 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 13. Attach the new pump cassette to the printer. Figure 4-166 Attach the pump cassette (sample) Fit the cassette into the slots in the housing, and turn clockwise to working position.
  • Page 140 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 15. Remove the clamp from the tube that is directed to the waste container (pump outlet). Figure 4-168 Clamp removed from the outlet side of the pump (sample) 16. Connect the tubes to the new pump cassette.

  • Page 141: Replacing The Material Filters

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Replacing the Material Filters Filters are installed in the lines that supply model material to the print heads. There are two configurations: • In the old configuration, the material filter includes several luer fittings.
  • Page 142 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 5. Put on protective gloves. Warning: Toxic and Corrosive Materials Prolonged contact with resins could cause skin irritation. Put on protective gloves before continuing. 6. Disconnect the material filter starting with the top side.

  • Page 143: Replacing The Odor Filter

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 10. In the Maintenance Counters screen, click Reset and then Close. Figure 4-172 Maintenance Counters screen, showing material filters (sample) For more information about maintenance counters, see "Maintenance Counters" on page 4-43.

  • Page 144: Replacing The Uv Lamps

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Replacing the UV Lamps The UV lamps used for curing 3D prints have a long, but limited, working life. You can test and adjust their effective power with the UV Calibration wizard (see "Testing and Calibrating the UV Lamps"...
  • Page 145 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 3. Make sure that the build tray is empty, and confirm this in the wizard screen. Then, close the printer, and click Next. Figure 4-175 Tray confirmation The axes move to the “home” position.
  • Page 146 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Note: Do not disconnect the power connection to the cooling fans. 6. Loosen the screw securing the UV lamp cover (A), and pull the cover up (B), then out (C).
  • Page 147 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 9. Remove the UV lamp bulb from the UV reflector. Figure 4-181 Removing the UV lamp bulb 10. Before continuing, inspect the spring-loaded pins. If there are burn marks around the pins or if the pins are loose—their springs are not functioning properly—and do not support the bulb, continue with step...
  • Page 148 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 11. Using the polyurethane tube provided in the kit, push the new UV lamp bulb into the UV reflector. Make sure that the tip on the bulb is facing the direction of the top of the reflector.
  • Page 149 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 13. Use the UV lamp clamp to insert the lamp bulb into place in the UV reflector. Figure 4-185 Pushing the UV lamp bulb into place 14. Using a 2.5-mm hex key, secure the clamp to the UV reflector, and continue...
  • Page 150 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Warning: Broken UV lamp hazard UV lamps contain mercury. Deal with broken lamps with caution. Ventilate the room thoroughly. Use protective gloves when collecting mercury and lamp components. Remove spilled mercury with a method that prevents the generation of mercury vapor, such as a syringe, packing tape or paper.
  • Page 151 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 19. Reconnect the power and heat fuse connectors. Figure 4-189 Connecting the UV lamp 20. In the wizard screen, confirm that you have replaced the UV lamp(s) and that the black strip is attached, then click Next.
  • Page 152 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer The wizard operates the UV lamps and checks if their power is within the acceptable range for each printing mode. Note: The mode currently being checked appears in the lower-left corner of the printer interface.

  • Page 153: Improving Color Uniformity Of X-Walls

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Improving Color Uniformity of X-Walls During the printing process, the alignment of the print heads can adversely affect the color uniformity of the part’s X-walls. The non-uniformity is more noticeable when the part’s left and right X-walls need to be matched after printing.
  • Page 154 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer ❒ Zyvax WaterShield™ for cleaning the transparency ❒ 90% isopropanol (IPA—isopropyl alcohol) or ethanol (ethyl alcohol) ❒ a computer running GrabCAD Print (preferably the computer that sends print jobs to the printer) ®...
  • Page 155 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Figure 4-195 Fixing the transparency to the tray 7. Secure the transparency sheet with tape to the tray. 8. Using a clean cloth, wipe Zyvax Watershield over the entire transparency.
  • Page 156 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 9. In the following screen, confirm the items in the wizard screen, and click Next. Figure 4-197 Confriming transparency readiness A test pattern is printed on the transparency. This takes approximately 10 minutes.
  • Page 157 After printing the test pattern on a transparency, you scan it twice. In addition, you scan the reference (grid) transparency twice. Use the scanner currently recommended by Stratasys. The illustrations in this section show the Canon CanoScan LiDE 400 interface.
  • Page 158 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 3. Select the Advanced Mode tab. 4. Make sure that these settings are as follows: ❒ Color Mode: Color ❒ Output Resolution: 1200 dpi ❒ All field under Image Settings: None or OFF...
  • Page 159 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 5. Place the test-pattern transparency face up on the scanner platen, with the arrows aligned with the black rail (under the glass), and the edge marked 'This Face Up - A' along the bottom edge of the scanner glass (closest to you).
  • Page 160 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 9. With the cursor, adjust the cropping frame (scan area) so that it surrounds the printed pattern shown below. Figure 4-204 Adjusting the cropping frame (scan area) 10. Click Scan.
  • Page 161 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 11. When scanning is finished, select Scan other images in the dialog box and click OK. Figure 4-205 Selection after scanning the test pattern If this dialog box does not appear, click Preferences (at the bottom of the interface) and in the Scan tab, select Display the dialog to select next action.
  • Page 162 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 20. When scanning is finished, select Retouch and save the image in the dialog box and click OK. Important: Save the images as JPG files. Figure 4-206 Selection after scanning the reference transparency 21.
  • Page 163 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Analyzing the Transparencies After scanning the test pattern and the reference grid, you analyze them in the Color Uniformity Utility, and the pixel correction values are calculated. To analyze the scanned transparencies: 1.
  • Page 164 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 5. On the printer, in the following wizard screen, enter each of the corrections values that appear in the utility in the ¼ Pixel column. Figure 4-209 Enter Pixel Correction screen in wizard 6.

  • Page 165: Dynamic Nozzle Test

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Dynamic Nozzle Test Perform the Dynamic Nozzle Test if you suspect that poor quality in 3D prints is caused by clogged or faulty nozzles in the print heads—even if this is not indicated by the Pattern Test.
  • Page 166 Many gaps in the sample indicates that many nozzles in the print head are not functioning. This might indicate the need to replace the defective head. In this case, consult with your Stratasys service provider. Samples printed from certain model materials in this test might not be completely cured.

  • Page 167: Built-In Tests

    A large number of hardware defects (or near-defects) warns you of possible printing problems, either for current or future jobs. Stratasys recommends running the built-in tests in the following cases: as a routine test, once every two weeks as a system check, before major (long) jobs as needed, for troubleshooting DOC-18001 Rev.
  • Page 168 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer To open the Built-in Tests screen, do one of the following: • From the Options menu, select Built-In Tests. • Press Ctrl+Alt+B. Figure 4-213 Selecting Built-In Tests from the Options menu The Built In Tests screen lists pre-configured tests, grouped by component categories.
  • Page 169 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Test List Test Name This column lists all of the tests, together with selection check boxes. Click the check boxes to select the tests you want to run. To remove a selection, click the check box again.
  • Page 170 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Test Results To save and view a report of all tests: ➢ Use the Save and View command buttons. Command Buttons Click the command buttons, on the right side of the screen to perform the following operations: Click to run the selected tests.
  • Page 171 Test Descriptions and Troubleshooting The following table lists the name of each test in the Built-in Tests suite, together with its description and a possible reason for its failure. If you need assistance, contact your Stratasys service provider. Test Name Description...
  • Page 172 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Test Name Description Possible Reason for Failure Head Voltages Checks the control of voltages Faulty print-head driver card(s). supplied to the print heads. Head/Block Heaters Tests the heaters in the print heads Faulty heaters or thermistors.

  • Page 173: Replacing The Waste Container

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Replacing the Waste Container Printer waste contains partially cured polymeric material, collected during normal operation and maintenance of the printer. For safety and environmental reasons, this material is kept in a special leak-proof, disposable container.
  • Page 174 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer The waste container consists of a plastic container inside a cardboard box. You typically dispose of the entire waste container—including the box. Therefore, you must assemble a new box and insert a new plastic container before you can install it in the printer.

  • Page 175: Cleaning The Exterior Panels

    Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer 7. Position new the waste container in the printer. Note: Make sure that the waste drain tube is not crimped or twisted, and that it is not pinched by the container.
  • Page 176 Stratasys J850/J835 User Guide 4 Operating and Maintaining the Printer Note: While soapy water is effective for cleaning, commercial products are also ® ® available for cleaning acrylic surfaces (for example, Novus and Brillianize These products give the surface antistatic, smudge and scratch-resistant properties.
  • Page 177 Handling Printed Models Removing 3D Prints After Printing Removing the Support Material Removing Support by Hand Removing Support with Water Pressure Removing SUP705/705B with Caustic Soda Removing SUP706/706B with Caustic Soda and Sodium Metasilicate Post-Printing Treatment Photobleaching for Transparent 3D Prints Storing 3D Prints DOC-18001 Rev.

  • Page 178: Removing 3D Prints After Printing

    Stratasys J850/J835 User Guide 5 Handling Printed Models Removing 3D Prints After Printing When printing is completed, you should allow the 3D prints to cool as much as possible before handling them. If additional 3D prints do not have to be produced on the printer, it is best to let the 3D prints cool in the printer, with the cover closed, as long as possible.

  • Page 179: Removing Support By Hand

    For most 3D prints, the most efficient way to remove support material is by using a high-pressure water jet. One suitable system is the Balco WaterJet cleaning unit. This device is marketed by Stratasys. Figure 5-1 Balco WaterJet Cleaning Unit...

  • Page 180: Removing Sup705/705B With Caustic Soda

    Stratasys J850/J835 User Guide 5 Handling Printed Models To clean a 3D print using this device, you manipulate it and the water using the built-in, waterproof sleeves. A pump turns ordinary tap water into a high- pressure jet. A wiper keeps the window clear.

  • Page 181: Post-Printing Treatment

    Photobleaching methods and instructions are described in the Best Practices for the relevant clear material. These are available on the Transparent materials page on the Stratasys Support Center. Refer to the Best Practices for: VeroClear RGD810...

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