Operating & Maintaining the Connex500/350 3-D Printer Starting the Connex Printer ............................................................... 2 Loading Model and Support Cartridges.......................................... 4 Producing Models ............................................................................... 5 Printer Interface Color Key.................................................................. 7 Printing Indicators ...................................................................
Operating & Maintaining the Connex500/350 3-D Printer Printer cover Printing-materials & storage compartment Figure 7-1: The Connex500 3-D Printer Starting the Connex Printer CAUTION! • Do not attempt to operate the Connex printer before being trained by an Objet customer-support representative. • Observe all safety warnings and follow the safety guidelines described in chapter 2. 1. Turn on the main power switch, located at the back of the Connex printer.
Connex500/350 User Guide 2. After the computer boots, log in to Windows and launch the Connex control application: • On the computer desktop, double‐click the Connex printer icon. or— • From the Start menu, select Objet > Connex500/350Connex500/350. A valid HASP key is required on the printer computer for the application to open. This key should be installed during printer installation. If the application does not open and a HASP message appears, contact your dealer or Objet Customer Support.
Operating & Maintaining the Connex500/350 3-D Printer Loading Model and Support Cartridges Connex printers use two cartridges of model material and two cartridges of support material, each weighing 3.6 kilograms when full. A graphical representation of the cartridges and their current weight appears in the printer interface (see figure 7‐3). —— The printer uses RFID technology to automatically identify the material cartridges. For this purpose, an RFID module is part of the printer hardware.
Connex500/350 User Guide Producing Models The Connex500/350 printer produces models by printing tray files prepared in the Objet Studio application and sent to the printer from there. For information about preparing model files for printing, see ”Using Objet Studio” or Objet Studio Help. Before beginning to produce models, it is recommended that you check the current printing quality of the print heads by performing a pattern test (see “Pattern Test” on page 21).
Operating & Maintaining the Connex500/350 3-D Printer The Connex500/350 printer uses one or two model‐material cartridges and one support‐material cartridge to produce models. If additional cartridges are installed and they are not needed for the current print job, the printer interface indicates which are being used: • Blue cartridge—used for the print job • Gray cartridge—not used for the print job You can monitor printer status indicators by switching the printer interface display.
Connex500/350 User Guide 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. • Green—suitable/ready for printing For example, in figure 7‐4: Ambient—The ambient temperature of the printing chamber is within the acceptable range. Heads Liquid—The level of model and support material in the print‐ block reservoir is OK.
Operating & Maintaining the Connex500/350 3-D Printer Printing Indicators The printer interface screen changes when you send a print job from Job Manager to the printer, and the printer is on line (see figure 7‐5): • The mode changes from Pre‐print to Printing. • The specific activity being performed is shown in the “current activity” field. • Current job‐printing information is displayed. • The printing progress bar is displayed. • The Stop and Pause buttons are enabled.
Connex500/350 User Guide Resuming Production After Printing has Stopped If the printing process is interrupted for any reason, Job Manager stops sending slices to the Connex printer. To continue printing the model: 1. Switch the printer to online mode by clicking the red button at the bottom of the Connex printer interface (see figure 7‐3 on page 3). The button changes from red to green (see figure 7‐4 on page 6). 2.
Operating & Maintaining the Connex500/350 3-D Printer If you cannot continue printing: 1. Cancel the print job in Job Manager. 2. Remove the partially printed model from the build tray. 3. Send the job to the Connex printer again. You can stop and later resume printing from either the Connex printer interface or the Job Manager interface, since both applications are updated when you use these commands.
Connex500/350 User Guide 4. In the Compartment Selection screen, select the cartridge(s) you want to replace, and click Next. Figure 7-9: Compartment Selection screen 5. From the drop‐down menu, choose the model material you want to install, and click Next. Figure 7-10: Material Selection screen Note: This selection automatically affects the default material settings in Objet Studio. 6.
Operating & Maintaining the Connex500/350 3-D Printer printer will be loaded with cartridges containing two different model materials, the Printer Mode Selection screen appears. Figure 7-11: Printer-mode selection 7. Choose whether you want to produce models in Single‐Material mode or in Digital‐Material mode, and click Next. • Single Material mode All four print heads are used to print, using one model material.
Connex500/350 User Guide 8. In the Flushing Options screen (see figure 7‐12), choose how thoroughly you want to flush the system. Figure 7-12: Flushing Options screen • Economy. This cycle can be used when replacing a light‐colored model material with a darker material (such as TangoBlack™ or VeroBlack™), or if the exact color of the printed models is unimportant.
Operating & Maintaining the Connex500/350 3-D Printer 9. Click Next, and take note of the warning screen. Figure 7-13: Material Replacement warning screen Once you start this procedure, you must complete it before you can produce models with the Connex printer. To perform the procedure at another time, click Cancel. If you continue (by clicking Next) and you do not complete the procedure, you must start the Material Replacement wizard again before producing models. 10. To continue, click Next. 11.
Connex500/350 User Guide 12. When the final wizard screen appears, make sure that the screen displays the newly‐loaded material(s). Click Done to close the wizard. CAUTION: Dispose of all material cartridges in accordance with all applicable laws and regulations. If necessary, the cartridges can be disassembled for recycling. If this is done, protect the person handling the cartridges from direct exposure to uncured resins.
Operating & Maintaining the Connex500/350 3-D Printer Shutting Down the Connex Printer You only need to shut down the Connex printer if it will not be used for a week or more. Otherwise, the printer can remain on, in Idle mode. To properly shut down, the printer needs to perform several processes. These are controlled by the Shutdown wizard.
Connex500/350 User Guide The shutdown procedure begins. Figure 7-17: Shutdown progress screen 5. When the final wizard screen appears, close the printer‐control application and shut down the built‐in computer. Figure 7-18: Final Shutdown Wizard screen 6. After the printer computer shuts down, turn off the main power switch (at the back of the printer) (see figure 7‐2 on page 2). DOC-13000 Rev.
Operating & Maintaining the Connex500/350 3-D Printer Maintaining the Connex Printer The performance of routine maintenance tasks is essential for getting satisfactory results from Connex 3‐D printers. Perform the tasks at specified intervals for optimum performance. Routine Maintenance Schedule 7–18 Frequency Task For More Information Daily, before printing Clean the print heads. See “Cleaning the Print Heads” on page 7‐19. Weekly Clean the build tray and the surrounding area.
Connex500/350 User Guide Cleaning the Print Heads Periodic inspection and cleaning of the orifice plates on the bottom of the print block ensures that the print nozzles are not clogged. A wizard guides you through the procedure, and adjusts components of the Connex printer to enable you to perform it. This procedure takes about 20 minutes, and should be done at the beginning of the work day or before a big printing job. To clean the print heads: 1.
Operating & Maintaining the Connex500/350 3-D Printer 5. When the following screen appears, open the cover. Figure 7-20: Head cleaning wizard—steps 5–10 WARNING: The print head orifice plates (bottom surface) may be hot. Do not touch them with your bare hands, and proceed with caution. 6. Place the mirror on the build tray. 7. Put on the gloves. 8. Soak the cleaning cloth with the cleaning fluid. 9. Clean the orifice plates, with a back‐and‐forth motion (see figure 7‐21).
Connex500/350 User Guide 11. Remove the cleaning materials from the printer and close the cover. 12. Select the confirmation check boxes in the wizard screen and click Next. The head‐purge cycle begins. When this is complete, the final wizard screen appears. Figure 7-22: Head cleaning wizard—final screen 13. Click Done to close the wizard.
Operating & Maintaining the Connex500/350 3-D Printer Figure 7-25: Sample Pattern Test 6. Carefully inspect the test paper to see if there are missing lines. Too many missing lines, especially if they are in the same area, indicates that the quality of printing when producing models will be poor. If this is the case, see “Improving Print Quality,” below. Note: Acceptable model quality is subjective, and depends on the type and scale (size) of the models produced.
Connex500/350 User Guide Cleaning and Replacing the Wiper A rubber wiper removes excess material from the print heads after the purge sequence. This is done automatically before each print job, and performed manually during maintenance tasks. You should clean the wiper and surrounding area at least once a week. If the wiper is damaged or worn, replace it. To inspect and clean the wiper: 1.
Operating & Maintaining the Connex500/350 3-D Printer Confirm this in the wizard screen. Figure 7-27: Wiper Cleaning procedure—step 4 5. Click Next. 6. When the following screen appears, open the cover. Figure 7-28: Wiper Cleaning wizard during steps 7–10 7. Put on the cleaning gloves. 8. Using a generous amount of cleaning fluid and the cleaning cloth, remove any material remaining on the wiper and the surrounding area. 9. Inspect the wiper.
Connex500/350 User Guide 12. Select the confirmation check boxes in the wizard screen and click Next. Figure 7-29: Wiper Cleaning procedure—final confirmation screen 13. Click Done to close the wizard. Cleaning the Roller Waste Collector and Inspecting the Roller Scraper (Knife) The roller waste collector removes waste material scraped from the roller. Suction removes this waste to the printer’s waste container.
Operating & Maintaining the Connex500/350 3-D Printer 3. Remove the right UV‐lamp assembly: a. Disconnect the UV power cable and the fan power cable. Fan power connector Power connector Screw Figure 7-30: Disconnecting the right UV assembly b. Remove the screw attaching the right UV lamp to the print block, and then pull and lift up the UV lamp. 4. Loosen the two screws securing the suction tube on the print block Suction tube screws Figure 7-31: Lifting the suction tube 5.
Connex500/350 User Guide Roller waste collector screws Figure 7-32: Removing the roller waste collector covering 7. Remove the covering by pulling it out, and then lower it. 8. Clean the roller waste collector and the scraper blade surface using cotton swabs. Make sure to remove any remaining printing materials. Figure 7-33: Cleaning the roller waste collector Before replacing the covering you can check the effectiveness of the roller scraper (knife)—see below.
Operating & Maintaining the Connex500/350 3-D Printer 7. Return the roller waste collector to the print block and screw on the covering (see figure 7‐32 on page 7‐27). 8. Loosen the screws securing the suction tube. Figure 7-35: Suction tube correctly positioned 9. Lower it so that the hole in the panel behind the suction tube is visible, and tighten the screws to secure the suction tube. 10. Attach the right‐UV‐lamp assembly to the print block and reconnect the UV power and fan cables.
Connex500/350 User Guide 4. Remove the screws that secure the roller scraper assembly. Figure 7-37: Removing the roller scraper screws Figure 7-38: Removing the old roller scraper blade 5. Remove the scraper blade and discard it. 6. Place the new scraper blade onto the pins in the holder, as shown. Figure 7-39: Inserting the new roller scraper blade DOC-13000 Rev.
Operating & Maintaining the Connex500/350 3-D Printer 7. Insert and tighten the roller scraper blade screws. Important: • Tighten the screws in the order shown in Figure 7-40. • Use the new screws supplied in the replacement-kit. Figure 7-40: Tightening the roller scraper screws 8. After tightening the screws, inspect the blade and make sure that it is straight. If necessary, loosen the screws and tighten them again, evenly. 9.
Connex500/350 User Guide 5. When instructed to do so, place the transparency on the build tray— next to the left and rear edges of the tray, as shown in the following figure. Figure 7-41: Positioning the transparency on the build tray 6. Make sure that the transparency sheet is lying flat, and tape it to the tray. 7. In the wizard screen, select the check box to confirm that the transparency sheet is on the build tray, and click Next. The Connex printer prints the head alignment test on the transparency.
Operating & Maintaining the Connex500/350 3-D Printer The transparency sheet is printed with sets of vertical lines in seven columns, each showing the results from a different print head. Figure 7-43: Sample head-alignment test • The three columns on the right were printed by the heads used for applying model material when producing models. From right to left, the columns represent heads M1, M2, M3, respectively.
Connex500/350 User Guide The first in a series of alignment screens appears. Figure 7-45: Head alignment screen 11. In the head‐alignment screen, select the number that indicates which lines align in the upper and lower rows of a pair on the transparency (counting from the left) for this print head. Note: Because the alignment of the fourth lines is optimum, the number “4” is selected, by default, in the wizard screen. This does not change the head alignment.
Operating & Maintaining the Connex500/350 3-D Printer 14. In the final wizard screen, choose to either repeat the head alignment procedure or close the wizard. • If the most closely aligned vertical lines for a print head were at either extreme—the first or seventh lines—choose Yes to run the head‐alignment wizard again, then click Next. The transparency test will show if the heads are now properly aligned, and—if not—the wizard will allow you to “fine tune” the alignment.
Connex500/350 User Guide 2. Start the Head Optimization wizard from the Options menu of the printer interface. Figure 7-48: Starting the Head Optimization wizard 3. In the opening wizard screen, click Next to begin. The Wizard Conditions screen appears. 4. Read the conditions, select I Agree and click Next. 5. Close the printer cover, and confirm this in the wizard screen. 6. In the following screen, make sure Optimize all print heads is selected, and click Next.
Operating & Maintaining the Connex500/350 3-D Printer 7. When the following screen appears, clean the print heads. WARNING: The print head orifice plates (bottom surface) may be hot. Do not touch them with your bare hands, and proceed with caution. Figure 7-50: Clean print heads screen 8. Place the mirror on the build tray. 9. Put on the cleaning gloves. 10. Soak the cleaning cloth with the cleaning fluid (alcohol). 11. Clean the orifice plates, with a back‐and‐forth motion.
Connex500/350 User Guide The head‐purge cycle runs, after which the Weight Test is printed. Figure 7-52: Printing Weight Test 15. 32 samples are printed on the build tray, four for each of the print heads. This can take up to 55 minutes. 16. When the following screen appears, open the printer cover. Enter the data that describes the condition of each print head, after inspecting each of the printed samples.
Operating & Maintaining the Connex500/350 3-D Printer Ruler Missing line Printed sample Figure 7-54: Measuring the missing line in a printed sample In the example above, you would enter “1” in the wizard screen. b. Carefully remove the sample, weigh it, and enter the weight in the wizard screen. Be sure to remove and weigh the entire sample, even if it breaks into several pieces. c. Click Apply or press Enter. The data‐entry‐indicator moves to the next position. d. Repeat these steps for all 32 samples.
Connex500/350 User Guide However, if the wizard determines that a print head is faulty—or that it is negatively affecting model quality with the current head configuration—the wizard instructs you to replace it. In this case, the following screen appears. Figure 7-56: Defective print heads found 18. Choose Replace defective head(s) if you are prepared to replace the print heads now. or— Choose Abort wizard if you want to replace the print heads at another time. Replacing print heads is expensive.
Operating & Maintaining the Connex500/350 3-D Printer Replacing Print Heads The condition of the print heads directly affects the quality of printed models. You need to replace a print head if one or more of the following symptoms occurs: • The Head Optimization wizard determines that one or more print heads are defective. (See “Calibrating Print Heads” on page 34.) • There are noticeable grooves in the surface of printed models.
Connex500/350 User Guide The Wizard Conditions screen appears. 4. Read the conditions, select I Agree and click Next. Figure 7-57: Procedure selection screen 5. Choose Replace faulty heads, and click Next. Preparing the print block 6. Select the print head(s) needing replacement, and click Next. Figure 7-58: Head selection screen The Connex printer heats and empties the print block, and prepares the printer. (This should take up to 30 minutes.) Figure 7-59: Printer preparation progress screen 7.
Operating & Maintaining the Connex500/350 3-D Printer 8. When the following screen is displayed, open the Connex printer cover. Note: The Connex printer disconnects power to the heads for your safety. Figure 7-60: Replace the defective head when this screen appears Removing the Defective Head 9. On the print block, release the upper and lower screws that secure the print head in the block. (If necessary, you may use a screwdriver to loosen the screws.) Figure 7-61: Releasing the locking screws 10.
Connex500/350 User Guide 11. Loosen the screws on the door of the compartment protecting the print‐head driver cards (A), then pull and lift up the door (B). Figure 7-63: Opening the print-head compartment 12. Pull the print‐head driver card out of its socket so that the head is free (A), and remove it from the bottom of the print block (B). Figure 7-64: Releasing the print-head driver card to remove the head 13. Make sure that along with the head, you remove the two rubber O‐ring seals.
Operating & Maintaining the Connex500/350 3-D Printer Figure 7-66: Making sure the O-rings are not stuck to the print block Installing the New Head Important: Remove the protective tape from the surface of the new print head. 14. Inspect the replacement head, and make sure that the O‐ring seals are in place (see figure 7‐65). 15. Gently insert the replacement head into the vacant slot in the print block, and push the print‐head driver card into its socket.
Connex500/350 User Guide 16. Push the head up until you hear it click into place, in both front and rear holders. Figure 7-68: Clicking the head into place in the print block 17. Lower the door of the print head compartment, and tighten the screws to lock it in place. 18. Tighten the upper and lower screws that secure the print head in the print block (see figure 7‐61 on page 42). Note: Hand-tighten these screws. Do not use a screwdriver. 19.
Operating & Maintaining the Connex500/350 3-D Printer Figure 7-70: Installation-check screen 21. In the next wizard screen, select the check box to confirm that you have removed all tools and objects from the printer. Figure 7-71: Cleared-tray confirmation screen 22. Close the printer cover. The wizard continues by filling the heads, then heating and purging them. If there are no installation problems, the Head Optimization procedure begins (see “Calibrating Print Heads” on page 7‐34).
Connex500/350 User Guide Figure 7-72: Final Head Optimization Wizard Screen Installation Problems If the printer detects that there is a problem after you install print heads, relevant warning screens appear. • If the printer software does not sense the replaced head, the following warning screen appears. Figure 7-73: Incorrect-installation screen If this happens: a. Open the print head compartment (see figure 7‐63 on page 43). b.
Operating & Maintaining the Connex500/350 3-D Printer • If the replacement head was not factory‐calibrated, the following warning screen appears. Figure 7-74: Invalid-data warning screen If this happens: a. Remove the head and replace it with another one (starting with step 9 on page 7‐42). b. In the wizard screen, select the check box to confirm that you have installed another print head, and click Next. c. Contact your authorized Objet Customer Support center about the unformatted head.
Connex500/350 User Guide Testing and Calibrating the UV Lamps The effective radiation of the UV lamps used for curing models can change over time. To ensure optimum curing of models during printing, a pop‐up message reminds you to test the lamps and calibrate their effective UV radiation after every 200 hours of printing. You do this by running the UV Calibration Wizard and using the built‐in UV radiation sensor.
Operating & Maintaining the Connex500/350 3-D Printer When all test have finished, the results are displayed. This shows the current condition of the lamps, after the wizard has calibrated them. Figure 7-77: Results and current condition of the UV lamps 3. Cover the UV sensor, and confirm this in the next screen. 4. In the final wizard screen, click Done. Figure 7-78: Final UV Calibration Wizard screen 7–50 DOC-13000 Rev.
Connex500/350 User Guide Calibrating the Load Cells Load cells are sensors that measure the weight of the printing cartridges and the waste container in the printer. It is important that you periodically check that the weight measurements are accurate, both for convenience and to prevent unnecessary waste of printing materials. It is recommended that you calibrate the load cells once a month, with the Load Cell Calibration wizard. To calibrate load cells: 1. Start the Load Cell Calibration wizard.
Operating & Maintaining the Connex500/350 3-D Printer 4. In the next wizard screen, observe the numbers and wait until the level is relatively stable—two units above or below the average level shown. Figure 7-81: Load cell calibration screen 5. Select the Weight is stable check box, and click Next. If you need to calibrate more than one load cell, the next calibration screen appears. Repeat steps 4 and 5 until all of the load cells are calibrated. 6. Click Done in the final wizard screen.
Connex500/350 User Guide adjust their effective power with the UV Calibration Wizard (see “Testing and Calibrating the UV Lamps” on page 49. If you need to replace a UV lamp, follow these instructions: 1. Make sure the Connex printer is in offline mode. Figure 7-83: Offline mode indicator (red) The online/offline button at the bottom of the printer interface should be red. If not, click it to switch the printer to offline mode.
Operating & Maintaining the Connex500/350 3-D Printer 5. Disconnect the power connection to the UV lamp. Figure 7-86: Disconnecting the UV lamp 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). Figure 7-87: Removing the UV lamp cover 7. Pull the lamp reflector out of the print block. Figure 7-88: Removing the UV lamp reflector 7–54 DOC-13000 Rev.
Connex500/350 User Guide 8. Inspect the new lamp reflector, and make sure that a black strip is attached to the inside of it. If not, install one—on the side of the reflector opposite (not next to) the print block. Note: Extra black strips are included in the printer Start-up Kit. If necessary, you can remove the black strip from the old reflector and install it in the new reflector (as long as the black paint has not faded). 9. Discard the old reflector and lamp.
Operating & Maintaining the Connex500/350 3-D Printer 12. Reconnect the power connection to the UV lamp. Figure 7-91: Connecting power to the UV lamp 13. In the wizard screen, confirm that you have replaced the lamp(s) and that the black strip is attached, then click Next. Figure 7-92: UV-installation confirmation screen The wizard operates the lamps and checks if their power is within the acceptable range for each printing mode.
Connex500/350 User Guide 14. After replacing a UV lamp, it is recommended that you calibrate its power for the various printing modes. The final screen allows you to continue to the UV Calibration wizard (see “Testing and Calibrating the UV Lamps” on page 7‐49). Figure 7-94: Final wizard screen Built-in Tests The software that runs your Connex printer contains a suite of tests for regularly checking the hardware and software, and for troubleshooting.
Operating & Maintaining the Connex500/350 3-D Printer Accessing Built-in Tests 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 7-95: Selecting Built-In Tests from the Options Menu Test Interface The Built In Tests screen lists pre‐configured tests, grouped by component categories. In this screen, you select and run tests, and the results are displayed.
Connex500/350 User Guide Status This column shows the status of each test after you run it: Test successfully completed. Test failed. Unknown results. (The test has not been run yet.) Test Selection Area Running Tests In the Test Selection area, at the bottom of the screen, you can quickly select or de‐select tests by their characteristics: All Click to select all of the tests in the list. None Click to de‐select all of the tests in the list.
Operating & Maintaining the Connex500/350 3-D Printer Test Results To save and view a report of all of the tests: ¾ Use the Save and View command buttons (see below). Command Buttons You click the command buttons, on the right side of the screen, to perform the following operations: Run Click to run the selected tests. Reset Click to clear previously run tests. This returns the status of each test to Unknown (?). Save Click to save a report that summarizes the tests run.
Connex500/350 User Guide 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 Objet service provider. Test Name Description Possible Reason for Failure Sub‐System Communication Tests communications between Eden components. Disconnected communications cable. Faulty cable. FIFO Non‐Interrupt/ Tests the data queue in the DATA PCI card.
Operating & Maintaining the Connex500/350 3-D Printer Replacing the Waste Container The waste container contains partially cured polymeric material produced during normal operation and maintenance of the Connex printer. For safety and environmental reasons, this material is kept in a special leak‐proof, disposable container. The container has a capacity of 10 kilograms of waste material—usually enough for several months of printer use.
Connex500/350 User Guide To prepare a new waste container: 1. Assemble the cardboard box, making sure to punch out the perforated sections. 2. Place a new plastic container into the box. Note: Do not close the box until you connect the waste drain tube from the printer (see below). To replace the waste container: 1. Open the front doors of the printer. Figure 7-98: Accessing the waste container 2. Carefully slide out the waste container to remove it from the printer. 3.
Operating & Maintaining the Connex500/350 3-D Printer The painted exterior plastic panels of Connex 3‐D printers have a durable Cleaning the Exterior Panels finish, offering excellent chemical resistance to common cleaning agents. However, follow the recommendations below when cleaning these areas of the printer.
Handling Printed Models Removing Models After Printing...................................................... 2 Removing the Support Material........................................................ 2 Storing Models..................................................................................... 3 DOC-13000 Rev.
Handling Printed Models Removing Models After Printing After printing models, you should allow them to cool as much as possible before handling them. If additional models do not have to be produced on the Connex printer, it is best to let the printed models cool in the printer, with the cover closed, as long as possible. If the Connex printer must be used to produce additional models as soon as possible: 1. Let the printed models cool on the build tray for at least 10 minutes. 2.
Connex500/350 User Guide Figure 8-1: Balco WaterJet Cleaning Unit To clean a model using this device, you place it in the chamber, and you manipulate it and the jet using the built‐in, waterproof sleeves. A pump turns ordinary tap water into a high‐pressure jet, and a wiper keeps the window clear. Use caution when cleaning delicate models with high-pressure water systems.
Handling Printed Models 8–4 DOC-13000 Rev.
