Multimat 2 Touch/Touch&Press Service Manual
Contents
1. 2 Electrical test Insulation resistance gt 2 MQ Not passed Protective earth resistance lt 0 3 Q Not passed Leakage current lt 3 5 mA Not passed 3 Function test Turn unit on perform function test Passed Not passed Lift and lower the muffle Mechanical test Passed Not passed Chamber is slowly deposited on plate 7 Passed Not passed Test toothed belt tension i Passed Not passed No vibration noise when opening closing the chamber Passed Not passed Touch screen display function Passed Not passed Smart media card function Passed Not passed Run dehumidifying program Perform vacuum test Passed Not passed Run calibration program silver wire test Offset temperature Not passed Furnace operating hours Muffle operating hours Pump operating hours Lifting cycles Firing cycles Comments Date Signature Pressing module upgrade DeguDent Rev Index A Dentsply international Company Page 1of5 0 Chapter 7 2 Rev Date 27 Sept 2004 Procedure Observe the precautions listed in chapters 1 1 and 6 1 The pressing module upgrade kit Order Code D03050010 is used to upgrade the Multimat 2 Touch to a Multimat 2 Touch amp Press The kit contains all the components required for this upgrade The upgrading process is described below Observe the dust protection precautions listed in Chapter 1 1 Move the upper part of the furnace to the upper te2. 1 The crosshead of the cylinder must take at least 2 s to move upward and 1 s to move downward This can be adjusted using the throttle screws see Fig 2 Turn off the pressurized air supply Remove the pressurized air hose Install the pressing cylinder Install the pressurized air hose and the wires Before installing the pressing hood connect the pressurized air hose and manually actuate the pressing cylinder on the magnetic valve No grinding noise must be present If a grinding noise is present loosen the four internal hex screws and move the cylinder to the point where the noise disappears Tighten screws and re check for presence of grinding noise Install and fasten the pressing hood Install the pressing hood 0 Page 2 of 2 Replacing the 4 2 way valve for the pressing cylinder EES i Rev Date 27 Sept 2004 Chapter 6 13 Manual ee actuation Fig 1 Trottle screws Top up 1 s Bottom down 2 s Fig 2 On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Page Testing protocol DeguDent _ Multimat 2 Touch amp Press Rev Index k Chapter 7 1 Rev Date 27 Sept 2004 Unit No Repair No O Touch O Touch amp Press 1 Visual inspection Serial Number Visual inspection Passed Not passed Chamber seal i Passed Not passed Supply cables Passed Not passed Connectors Passed Not passed
3. Procedure Observe the precautions listed in chapters 1 1 and 6 1 Observe the dust protection precautions listed in Chapter 1 1 Disconnect the furnace from mains Disconnect the pressurized air supply Loosen the two screws of the pressing hood on the back of the furnace Push the pressing hood slightly to the back and lift it upward and out Disconnect the pressurized air hose from the magnetic valve by pulling the locking ring into the angle while at the same time pulling on the pressurized air hose Loosen the connectors on the magnetic valve parallel terminals Disconnect the wires from the position sensor Loosen the four internal hex screws under the pressing cylinder and carefully pull the cylinder upward and off Remove the mounting screws of the pressing cylinder Remove the mounting screws on the magnetic valve toward the pressing cylinder Lock the double nipple between the white plastic block and the magnetic valve in place and remove the magnetic valve Remove the components attached to the old magnetic valve and reattach them to the new magnetic valve Install the new magnetic valve on the cylinder and fasten it with the appropriate screws Install the mounting screws of the pressing cylinder Install the mounting screws on the magnetic valve toward the pressing cylinder Connect the blue pressurized air hose to the magnetic valve and adjust the pressure max 2 7 bar Actuate the magnetic valve manually see Fig
4. so that 45 cm of the control wire with connector remain in the upper part of the furnace Thread the pressurised air hose for the pressing module through the right support hole so that 33 cm of the hose remain in the upper part of the furnace Connect the control wire and pressurised air hose to the existing lines tubes using a cable tie Pressing module upgrade gg DeguDent Rev Index Chapter 7 2 Rev Date 27 Sept 2004 Cut open one cable tie each on the two front main connection spots of the cable harness Place the new wire alongside the existing wires and connect them to the existing wires with small cable ties right next to the existing cable ties Connect the new wire to the two main connection spots of the cable harness together with the existing wires Use large cable ties for the cable harness Connect the multi contact plug to the control wire of the pressing valve brown green white free yellow VOODOO Insert the pressurized air hose into the connection hardware installed earlier Convert the vacuum vessel Observe the dust protection precautions listed in Chapter 1 1 Remove the isolating disc Disconnect the thermo couple Remove the thermo couple from the upper terminal insulation Remove the existing upper terminal insulation Insert the upper terminal insulation for Touch amp Press Insert and connect the thermo couple Insert the vacuum vessel into the upper part of the furnace and fasten it Conne
5. program again Touch one of the arrow buttons until the basic settings appear Select the program to be repeated an start it Cancelling continuous program e Disconnect the furnace from mains e Reconnect the furnaces to mains Page Testing programs Rev Index 0 Chapter 7 6 Rev Date 27 Sept 2004 Testing programs are designed to check device function in the event of program errors If the testing program is executed without errors the error is probably an application error The following testing programs have been pre programmed Program name Program DeTrey testing program 471 Ceramco testing program 472 External testing program 473 Notes on testing the pressing function Check the position and function of the pressing function through the chamber using a mirror Check the cylinder function by actuating the cylinder valve manually To do so use a thin object such as a small screwdriver to actuate the valve through the cooling ribs on the top of the pressing hood No grinding noise must be present when the crosshead is moving Correct the lid position if necessary Contact information DeguDent Chapter 7 7 Technical information Phone 49 5471 807 49 Fax 49 5471 807 79 E mail service degudent de Spare part orders Call your contact person at DeguDent GmbH Hanau Germany Page Rev Index Rev Date 0 27 Sept 2004
6. versa Resetting the lifting cycle counter After every 15000 lifting cycles a warning message appears in the furnace display The furnace must be inspected by a service technician This inspection includes checking the toothed belt tension To ensure seamless operation we also recommending changing the wires that lead to the chamber To reset the counter to zero after inspection you will need this function Touch the M button to select the main menu Select Furnace parameters from the menu shown Touch Lift cycles Enter 6070 on the numeric keypad Touch Lift cycles again Touch the C button to set the counter to zero Terminating service mode e Disconnect the furnace from mains by pulling the plug e Reconnect to mains after three or four seconds e The furnace is now back in normal mode Page Continuous testing Rev Index 0 DeguDent Chapter 7 5 Rev Date 27 Sept 2004 Procedure To locate intermittent errors the continuous testing function allows you to repeat any program automatically e Disconnect the furnace from mains e Reconnect the furnaces to mains e When the Dentsply logo appears on the display touch the S button The furnace will now automatically perform self testing If the test was performed successfully and after touching OK the screen displays the basic settings Touch the M button Touch Furnace parameters Touch Continuous program Enter 6070 on the numeric keypad Touch Continuous
7. If the silver wire has melted to a clump the firing temperature is too high In this case you would repeat the testing program with new silver wide and while decreasing the chamber temperature by 3 C at a time until the desired melting effect is seen on the surface of the silver wire e Once the correct melting temperature has been reached touch the Silver field The temperature offset is stored in memory e This completes the adjustment of the chamber temperature 0 Rev Date 27 Sept 2004 Page Vacuum test DeguD ent S Rev Index Chapter 4 2 Procedure Observe the precautions listed in chapters 1 1 and 6 1 Vacuum test Used to check the furnace for leaks Note The firing base must be located inside the chamber Touch the M button Touch Furnace Parameters Touch Vacuum test The position of the chamber is of no consequence The chamber will close and the vacuum pump will start operating The vacuum should be brought down to 40 hPa whereupon the vacuum pump will be turned off The vacuum will be held and the Test successfully completed message will appear in the display Confirm the message by touching the C button If the required vacuum level is not attained detach the pump s vacuum line at the furnace shorten it by 1 cm and reattach it Repeat the vacuum test Watch the vacuum on the display If it still is not brought down to 40 hPa completely kink in the vacuum line so that the pressure cannot be decrea
8. Remove the toothed belt e Loosen the driving plate and gripping plate e Install the new toothed belt in reverse order e Tighten the toothed belt as described in Chapter 4 3 On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Page Replacing the firing base carrier eech Chapter 6 9 Sere Rev Date 27 Sept 2004 Procedure Observe the precautions listed in chapters 1 1 and 6 1 Disconnect the furnace from mains Remove the control unit See instructions in Chapter 6 2 Replacing the control unit Loosen the microswitch Use a short screwdriver to loosen the mounting screws of the firing base carrier in the lower part of the furnace Remove the pressure spring e Install the firing base carrier in reverse order e Readjust the microswitch as described in Chapter 5 4 Note Any washers located between the compression springs and the top of the lower part of the furnace will have to be reinstalled as well On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Page Replacing the micro switch Rev Index 0 Chapter 6 10 Rev Date 27 Sept 2004 Procedure Observe the precautions listed in chapters 1 1 and 6 1 Disconnect the furnace from mains Remove the control unit See instructions in Chapter 6 2 Replacing the control unit Remove the mounting screws of the mic
9. Service manual Multimat 2 Touch Touch amp Press Last modified 27 Sept 2004 DeguDent GmbH D 63404 Hanau Page Contents DeguDent Rey Index 0 A Dentsply International Company Rev Date 27 Sept 2004 Chapter General information Safety notes Instruments and tools 2 Wiring diagrams 2 1 Wiring diagram 100 240 V Multimat 2 Touch Touch amp Press 3 Troubleshooting 3 1 Error messages 4 Tests 4 1 Silver wire test 4 2 Vacuum test 4 3 Toothed belt tension 5 Adjustments 5 1 Adjusting the pressing cylinder position sensor 5 2 Adjusting the microswitch for the lifting drive 6 Repair instructions 6 1 General repair information 6 2 Replacing the control unit 6 3 Replacing the I O PCB interface 6 4 Replacing the power supply 6 5 Replacing the firing muffle 6 6 Replacing the thermo couple 6 7 Replacing the gear motor 6 8 Replacing the toothed belt 6 9 Replacing the firing base carrier 6 10 Replacing the micro switch 6 11 Replacing the magnetic valve 6 12 Replacing the press cylinder 6 13 Replacing the 4 2 way valve of the pressing cylinder Contents rae DeguDent Rev Index 0 Rev Date 27 Sept 2004 Chapter 7 Considerations 7 1 Testing protocol for Multimat 2 Touch Touch amp Press 7 2 Press module upgrade 7 3 Software update 7 4 Service mode 7 5 Continuos testing 7 6 Testing programs La Contacts Page Safety notes Rev Index Chapter 1 1 Service and repairs must be performed on
10. a different menu and closing the chamber Note Before calibrating the temperature the temperature offset in the Furnace Parameters menu must be reset to zero To do so touch the M button open the Furnace Parameters menu and select the Temp offset command then confirm the reset to zero by touching the C button The furnace must be connected to the pressurized air supply for the pressing rod to be in its upper position This position is required to ensure reproducibility of the temperature test Use the touch firing base for the purposes of this test Once the furnace has been pre heated start the special silver wire test program This is done either by touching Porcelain Type Special Programs Silver wire calibration or by calling the silver wire test directly by touching the R button and entering 475 e Open the chamber e Insert the silver wire into the wire carrier and place it in the middle of the firing base e Start the silver wire test program e If the upper half of the silver wire shows signs of melting in the upper third i e if a bead of molten silver has formed on the surface of the wire the temperature is correct to within 2 C e f the surface of the silver wire does not show any signs of melting the firing temperature is too low In this case you would repeat the testing program while increasing the chamber temperature by 3 C at a time until the desired melting effect is seen on the surface of the silver wire e
11. ct the vacuum hose muffle thermo couple and protective earth Place the insulation disk with the hole centrally on the upper terminal insulation Run the new wire so they exit centrally at the top of the upper part of the furnace and fixate temporarily with tape 0 Pressing module upgrade SR DeguDent Rev Index A Dentsply Intemational Company 0 Chapter 7 2 Rev Date 27 Sept 2004 Installing the pressing module Detach and remove the pressing hood from the pressing module Attach the pressing module to the lid using the appropriate seals and spacers Insert the pressing module vertically from above crosshead first into the guide sleeve of the upper terminal insulation Connect the protective earth wire to the lid and thread the new wire and hose through the rear groove Align the lid Make sure that the protective earth wire is not lodged between the vacuum vessel and the lid Fasten lid using the four lid screws Tighten opposite screws first Insert the pressurized air hose into the mounting screws of the pressing valve Connect the yellow white wires to the position sensor Connect the blue green wires to the parallel connectors of the magnetic valve Testing the pressing function Connect the pressure control valve with the blue pressurized air hose to the furnace Connect the pressure control valve to the pressurized air supply and set it for 2 7 bar of pressure Manually actuate the pressure valve at the upper
12. e from getting in contact with any sweat or grease e Install the new muffle in reverse order Warning Ensure that the wire ends have no contact with the metal jacket of the upper part of the furnace Re connect the protective earth wire to the lid Check for correct polarity when reinstalling the thermo couple Perform a temperature test using the silver sample as described in Chapter 4 1 On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Seite Replacing the thermo couple Rev Index 0 Kapitel 6 6 Stand 27 Sept 2004 Procedure Observe the precautions listed in chapters 1 1 and 6 1 Multimat 2 Touch amp Press Observe the dust protection precautions listed in Chapter 1 1 Disconnect the furnace from mains Turn off the pressurized air supply Screw off the pressing hood pull it slightly to the back and remove it Disconnect all connectors from the magnetic valve Disconnect the pressurized air hose from the magnetic valve by pulling the locking ring upward while at the same time pulling on the pressurized air hose e Disconnect the position sensor Multimat 2 Touch e Screw off lid and lift it off upward for Touch amp Press to the point that the pressing rod is free e Remove the protective earth wire from the lid Removing the thermo couple e Remove the insulation disk s e Disconnect the thermo couple from the two rear
13. end of the magnet coil of the magnetic valve The pressing cylinder with the crosshead will move downward No grinding noise must be present If necessary loosen the lid of the vacuum vessels or pressing cylinder again and correct until no more grinding noise is heard Reconnect and tighten everything If necessary adjust the cylinder speed using the two throttle screws of the valve Pressing module upgrade DeguDent Rev Index A Dentsply Intemational Company Page 4of5 0 Chapter 7 2 Rev Date 27 Sept 2004 Final assembly Install the pressing hood Install power supply if needed or remove cloth and filings Clean the lower part of the furnace using a vacuum cleaner Install the I O PCB Insert and connect the control unit Connect the multi contact plug of the pressing control line with the multi contact socket of the control unit Place the Multimat 2 Touch amp Press ID tag on top of the existing ID tag Perform testing pursuant to DIN VDE 0701 measure protective earth insulation resistance leakage current Configuration e Connect the furnaces to mains e When the Dentsply logo appears on the display touch the S button e f the function test was passed touch the M button e Touch Configuration e Touch Furnace so it says Press e Touch one of the arrow buttons until the basic set up display appear e Pull the mains plug wait for five seconds and reconnect e Place the firing base on the firing base carr
14. ept 2004 Rev Date Ta N Ben 03 pen a Oo ued Bus aoewng py EE o o PR weg o 1 E Y31714 INI juedo wiou SALE E yy HOUMS Um ee ee A Zz Aejdsig A ayeudosidde yum SIDDOU BAWASVYD JMA On AATVA 121NM Gegen Eidag amy fetar isal asn am 2 x lt EI 5 yy 22 oe NIGON magvag gue d E E Uy ENZ AL 2 K G LYOddNs SSaud 7 S Kat JMA SSIYd DeguDent A Dentsply international Company Error messages Chapter 3 1 Page Rev Index 0 Rev Date 27 Sept 2004 The following information is intended to assist in recognizing and evaluating problems and errors and in taking appropriate measures for resolving them An error message the possible cause and possible corrective action s are shown in the display in abbreviated form Confirm the message by touching the C button Additional information about the cause of the error will be displayed on touching the button The error messages are listed under their leading alphanumeric codes for ease of retrieval No Error message Possible cause Action s Display remains dark green Defective display Disconnect furnace from mains Replace defective mains LED is not lit Defective mains fuses fuses If the display remains dark check power supply If 5 V and 24 V voltages are present replace control unit E01 Time limit for introducing the T
15. essing hood on the back of the furnace Push the pressing hood slightly to the back and lift it upward and out Disconnect the pressurized air hose from the magnetic valve by pulling the locking ring into the angle while at the same time pulling on the pressurized air hose Loosen the connectors on the magnetic valve parallel terminals Disconnect the wires from the position sensor Loosen the mounting screw of the position sensor and pull the sensor upward and out Loosen the four internal hex screws under the pressing cylinder and carefully pull the cylinder upward and off Remove the attached components double nipple with multiway valve and angular connectors Remove the pressing die housing from the compact cylinder Install the new pressing cylinder in reverse order Before installing the pressing hood connect the pressurized air hose and manually actuate the pressing cylinder on the magnetic valve No grinding noise must be present If a grinding noise is present loosen the four internal hex screws and move the cylinder to the point where the noise disappears Tighten screws and re check for presence of grinding noise Install and fasten the pressing hood e Install the pressing hood On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 P DeguDent Replacing the 4 2 way valve for the 8 pressing cylinder Rev Index Rev Date 27 Sept 2004 Chapter 6 13
16. furnace can be accessed e To remove the control unit lift up the chamber and support it Loosen the tWo mounting screws at the bottom of the unit Lift the control unit and pull it forward and away from the furnace Disconnect the contacts and remove the vacuum line from the sensor The control unit may now be set aside e Reassemble in reverse order Caution Watch for correct polarity of the connecting wires of the thermo couple The two terminals next to the vacuum sensor must be connected Page 2 of 2 General repair notes DeguDent Rev Index 0 terati Chapter 6 1 Rev Date 27 Sept 2004 Firing chamber Loosen the two rear mounting screws Slide the top cover backward and lift it away upward The pressing mechanism can now be accessed To open the chamber disconnect the wires at the cylinder and position sensor connectors Remove the pressurized air line To do so press against the angular connector and pull the outward e Once the four lid screws are removed the top cover with the pressing mechanism can be lifted e Reassemble in reverse order On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Replacing the control unit Page DeguDent Rev Index entsply International Company 0 Chapter 6 2 Rev Date 27 Sept 2004 Procedure Observe the precautions listed in chapters 1 1 and 6 1 Caution Both the u
17. fway into the groove on the cylinder Connect an ohmmeter to the two connectors of the position sensors Connect the furnace to the pressurized air supply Use a screwdriver to press on the magnetic valve from above and hold The cylinder will move to the lower position e Move the position sensor down to the point where the ohmmeter safely changes to 0 ohms from infinity e Arrest the position sensor in this position using the small headless screw and secure the screw with a drop of silicone On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Adjusting the micro switch Page BE for the lifting drive Rev Index 0 Rev Date 27 Sept 2004 Chapter 5 2 Procedure Observe the precautions listed in Chapters 1 1 and 6 1 Lifting plate The micro switch must be adjusted to actuate once the lifting plate has travelled half its path On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Page General repair notes DeguDent Rev Index 0 Chapter 6 1 Rev Date 27 Sept 2004 Before performing each disassembling step note the location and order of all components in order to facilitate seamless reassembly To service the furnace as described in the next chapters open it as follows Front area Once the control unit has been removed all the components in the lower part of the
18. he 15 minute time limit for introducing the Insert pressing mould more quickly object has been exceeded pressing mould has been exceeded E02 Normal pressure is not Magnetic valve is defective Ventilation valve defective restored chamber does not Check and if necessary replace the magnet coil open Clean valves E03 position switch not closed Transport lock or foreign matter caught Remove transport lock or foreign matter between the upper and lower parts of the furnace Terminal position switch out of adjustment Readjust or replace terminal position switch or defective E 04 Excessive control unit Extremely high standby temperature with Disconnect mains plug and allow furnace to cool for temperature the chamber open approximately 5 minutes Restart furnace after Program terminated continuous successful cooling alarm tone E05 Selected vacuum level not Moisture in chamber insulation Start dehumidifying program 476 with vacuum pump or attained Program terminated Vacuum system leak Vacuum pump suction too low 474 without vacuum pump Start vacuum testing program from the Furnace Parameters menu Watch indicated pressure level Seal off vacuum line after 1 minute by kinking If the vacuum drops rapidly the leak is inside the furnace seals magnetic valves tubing etc Moisture in the chamber If the vacuum does not drop the pump has insufficient suction Check pump as per the manufacturer s instruct
19. ier e Pre heat the furnace at 600 C for at least one hour e Calibrate the temperature See instructions in Chapter 4 1 Silver wire test On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Page Pressing module upgrade DeguDent Rev Index 0 A Dentsply international Company Chapter 7 2 Rev Date 27 Sept 2004 Manual actuation Trottle screws Top up 1 s Bottom down 2 s Yellow Free White Green Brown Pin assignment Page Software update Rev Index 0 Chapter 7 3 Rev Date 27 Sept 2004 DeguDent A Dentsply International Company Installing new furnace software e Disconnect the furnace from mains by pulling the plug e Connect the furnace and the PC using a serial cable e Insert a disk containing the most current program version Start the MumaUpdt exe program E Explorer 3 5 Diskette L Date Bearbeiten Ansicht Wechselnzu Favoriten Extras Adresse E Ah Ordner x Z Desktop Arbeits sl Jiskette amp E e The following dialog box appears Multimat Software Update EN Unplug and plug in the furnace again i 0 of 0 Bytes Deutsch English Polska Turk e Griechisch Nederlands e Use the mouse to select the language version left German to Dutch includes English or right German t
20. inward by about 10 mm If this is not possible the tension of the toothed belt is too high In this case proceed as described below e Use the enclosed internal hex key to turn the toothed belt tension set screw counterclockwise until it is possible to push the cog belt from the outside inward by about 10 mm Note The toothed belt tension set screw may be secured with a locking varnish In this case turning the set screw can be somewhat difficult The correct toothed belt tension has now been restored e To mark the new position of the toothed belt tension set screw draw a short line across the column cover plate and the set screw This lets you check the setting whenever you want e Restore function in reverse order see Chapters 6 5 4 and 2 Column cover plate If the cylinder screw is detached from the belt tension sheet use a screwdriver to press the toothed lock washer toward the screw from below On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Page Adjusting the pressing cylinder eo position sensor Rev Index 0 Rev Date 27 Sept 2004 Chapter 5 1 Procedure Observe the precautions listed in chapters 1 1 and 6 1 After this exchange the position sensor on the pressing cylinder will have to be readjusted Silicone The position sensor consists of a Reed switch actuated by a magnet on the cylinder Slide the new position sensor about hal
21. ions test vacuum performance DeguDent A Dentsply International Company Error messages Chapter 3 1 Page Rev Index 0 Rev Date 27 Sept 2004 Nr Error message Possible cause Action s E06 Rapid cooling not completed The pre heating temperature has not been Wait until the stand by temperature has been reached reached or terminate rapid cooling by touching the C button The stand by temperature has not been reached E07 Mains failure has occurred Short term mains supply failure during Check firing result firing Have in house wiring checked if required E08 Defective heating circuit Defective muffle wires or triac Replace muffle wires or control unit Program terminated E09 Error on thermo couple or on Thermo couple or connecting wire of the Replace thermo couple or connecting wire of the thermo connecting wire of the thermo thermo couple disconnected couple couple Program terminated Incorrect polarity of thermo couple Reconnect with correct polarity E 10 Battery low Battery on control unit PCB almost empty Replace battery Battery is located in a battery holder on control unit PCB E11 Excessive temperature Actual temperature exceeds set Replace control unit temperature by 25 C or more E 12 Maximum pressing path Not enough ceramic material in the Use sufficient ceramic material reached pressing mould Program terminated Pressing cylinder position sen
22. ly by service technicians authorized by DeguDent and Dentsply The Multimat 2 Touch Touch amp Press furnace must be operated using original replacement parts and accessories only This is the only way to ensure that the performance data outlined in the Instructions for Use are met and that the device can be operated safely The furnace must be completely disconnected from mains when service or repair work is performed Exception The furnace can be in operative condition when performing setting or adjustment tasks These tasks must be performed with the utmost caution as there is a risk of touching live components The insulation material used inside the furnace contains ceramic fibres Fibre dust can be released on exchanging the muffle or the insulation Ceramic dust has been shown to be carcinogenic in animal experiments Make sure to observe the precautionary measures listed in the pertinent EU Material Safety Data Sheet MSDS If ceramic fibres are used at temperatures above 900 C for a longer period silicogenic substances cristobalite may form In certain cases such as when exchanging the firing muffle dust emissions may occur that may cause irritations of the skin and eyes and of the respiratory tract When a firing muffle has to be exchanged always proceed as follows e Instruct the staff to wear long sleeved clothing Heads must be covered and eye protection and gloves worn e Connect a dust vacuum aspirator at the
23. nit Turn the control unit to the left hand side for the I O PCB to become accessible Remove the two bolts on the outside of the RS232 interface connector Remove the two mounting screws of the I O PCB Remove the I O PCB Reinstall the PCB in reverse order On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 0 27 Sept 2004 Page Replacing the power supply DeguDent Rev Index Chapter 6 4 Rev Date Procedure Observe the precautions listed in chapters 1 1 and 6 1 Disconnect the furnace from mains Lift the top portion of the furnace and support it with a suitable object Remove the two screws below the control unit Lift up the control unit Disconnect the flat ribbon cable of the I O PCB from the control unit Turn the control unit to the left hand side for the power supply to become accessible Pull off the three connectors of the power supply Remove the four mounting screws at the corners of the power supply Remove the power supply from the furnace Install the new power supply in reverse order Restore the control unit to its position On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 0 27 Sept 2004 Replacing the firing muffle Rev Index Page 1 of 2 0 Chapter 6 5 Rev Date 27 Sept 2004 Procedure Observe the precautions listed in chapter
24. o Russian Page Gerber Software update ge 0 Chapter 7 3 Rev Date 27 Sept 2004 e Connect the furnaces to mains and watch the progress bar e If the following message appears Ready terminate the program by clicking the x symbol in the top right corner of the dialog box Multimat Software Update EN Unplug and plug in the furnace again i eady COM2 DRRRRRRRRRRRRRRRRRRRRRRRDRR 4191 of 4151 Bytes Griechisch Magyar Nederlands Russisch Disconnect the furnaces from mains again Remove the serial cable To complete the software update reconnect the furnace with mains A language selection menu appears Select the desired language After the self test has been run successfully the furnace is once again ready for use Page DeguDent Service mode ge i Chapter 7 4 Rev Date 27 Sept 2004 To enter service mode proceed as follows Disconnect the furnace from mains by pulling the plug Reconnect to mains after three or four seconds Touch the S button while the welcome screen with the Dentsply logo is displayed Start the furnace self test The following functions are available in service mode Swapping program mode Required after replacing the control unit and after upgrading a Touch furnace to a Press furnace e Touch the M button to select the main menu e Select Configuration from the menu shown e Inthe right column the Furnace parameter can be change from Touch to Press or vice
25. rminal position and remove the firing base Disconnect the furnace from mains Unscrew the lid of the vacuum vessel and disconnect the protective earth wire from the lid Loosen the lower mounting screws of the vacuum vessel four slotted cylinder screws and the two front hexed cylinder screws Slightly loosen the third and central hexed cylinder screw so it protrudes somewhat Tilt the vacuum vessel slightly backward while pulling it forward This will pull the vacuum vessel off the bolt Lift the vacuum vessel and disconnect the vacuum hose muffle thermo couple and protective earth Lift the vacuum vessel out of the upper part of the furnace Remove the control unit See instructions in Chapter 6 2 Replacing the control unit Remove the UO PCB See instructions in Chapter 6 3 Replacing the I O PCB interface Cover the power supply PCB with a cloth so no filings can fall on or into the PCB Consider removing the power supply PCB See instructions in Chapter 6 4 Replacing the power supply Break out the aperture for the pressurized air connector directly above the vacuum hose connector Clean the edges and remove any flash Install the connection hardware for the pressurized air inlet The respective fastener nut is located on the outside of the lower part of the furnace Attach the max 2 7 bar label above the pressurized air inlet Thread the control wire for the pressing module through the left support hole from top to bottom
26. ro switch Remove the micro switch and disconnect the wires Install the micro switch in reverse order Adjust the micro switch as described in Chapter 5 2 Adjusting the micro switch for the lifting drive On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Page Replacing the magnetic valve Rev Index Chapter 6 11 Rev Date Procedure Observe the precautions listed in chapters 1 1 and 6 1 Disconnect the furnace from mains Remove the control unit See instructions in Chapter 6 2 Replacing the control unit Remove the Teflon tube and the silicone tube Loosen the mounting screws of the valve support Remove the magnetic valve from the valve support Install the new magnetic valve block on the valve support Move the cable from the old to the new valve block Fasten valve support Reinstall the control unit Perform the vacuum test as described in Chapter 4 2 On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 0 27 Sept 2004 Page Replacing the pressing cylinder DeguDent Rev Index 0 Chapter 6 12 Rev Date 27 Sept 2004 Procedure Observe the precautions listed in chapters 1 1 and 6 1 Observe the dust protection precautions listed in Chapter 1 1 Disconnect the furnace from mains Turn off the pressurized air supply Loosen the two screws of the pr
27. rom the furnace Remove the polyamide spacer from the gear axis and attach it to the new motor Reinstall the gear motor in reverse order Note After the gear motor has been placed inside the toothed belt the axis of the gear motors must be inserted into the counter bearing as far as it will go Fasten gear motor in centre position On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Page Replacing the toothed belt Rev Index 0 Chapter 6 8 Rev Date 27 Sept 2004 Procedure Observe the precautions listed in chapters 1 1 and 6 1 e Disconnect the furnace from mains Remove the control unit UO PCB and gear motor See Chapter 6 2 Replacing the control unit Chapter 6 3 Replacing the I O PCB and Chapter 6 7 Replacing the gear motor e Loosen the internal hex screw covered with a round protective label of the column cover plate e Support the upper part of the furnace so it cannot tilt forward e Pull the column cover plate with its precision steel shafts up and out e Tilt the upper part of the furnace slightly forward and support it so it stays in place e Pull the driving plate and gripping plate to the right and remove them together with the toothed belt gripping plate e Remove the gripper ring from the cylinder pin and pull out the cylinder pin e Remove the tooth lock washer with the two spacers from inside the toothed belt gripping plate e
28. s 1 1 and 6 1 Deinstallation Multimat 2 Touch amp Press Observe the dust protection precautions listed in Chapter 1 1 Disconnect the furnace from mains Turn off the pressurized air supply Screw off the pressing hood pull it slightly to the back and remove it Disconnect all connectors from the magnetic valve Disconnect the pressurized air line from the magnetic valve by pulling the locking ring upward while at the same time pulling on the pressurized air hose Disconnect the position sensor Multimat 2 Touch Screw off lid and lift it off upward for Touch amp Press to the point that the pressing rod is free Remove the protective earth wire from the lid Removing the heating muffle Remove the insulation disk s Disconnect the thermo couple from the two rear terminal bolts Remove first the thermo couple with its perforated rod and then the terminal insulation Disconnect the ends of the muffle s heating wires from the two front terminal bolts To prevent the bolds from turning freely use a 12 mm open end wrench Use a 7 mm open end wrench to loosen the hex screw Remove the muffle from its insulating bed If the furnace is still hot grab the muffle carefully by the ends of the heating wires Page 2 of 2 Replacing the firing muffle DeguDent Rev Index 0 Chapter 6 5 Rev Date 27 Sept 2004 Installation Caution Wear textile gloves when installing a new muffle in order to prevent the quartz tub
29. sed Watch the display If the existing vacuum is maintained the vacuum pump is not strong enough to create the required vacuum If the pressure increases there is a leak inside the furnace Clean the firing base carrier seal or replace as appropriate Check the magnetic valve and clean or replace as appropriate see 6 11 Replacing the magnetic valve Replace the seals of the connecting bolts thermo couple and heating muffle Disassembly is described in Chapter 6 5 Replacing the firing muffle 0 Rev Date 27 Sept 2004 Toothed belt tension Gen Rev Index 0 Chapter 4 3 Rev Date 27 Sept 2004 Setting and checking the toothed belt tension Simple instructions for accessing and adjusting the toothed belt tension in Multimat 2 Touch Touch amp Press furnaces in which the toothed belt tension set screw is freely accessible rather than being covered by a label The furnace should be in a cold condition Move the upper part of the furnace to the upper terminal position Remove the firing base from the firing base carrier Use a vacuum cleaner to remove any ceramic dust from the firing base carrier Detach all connections to the furnace Lay the furnace on its back Move the upper part of the furnace against the upper stop to release the tension on the toothed belt With light finger pressure press one side of the toothed belt from the outside inward If the belt has the right tension it should be possible to press it
30. ser specific data and the device data are lost when the control unit is replaced Any modified programs should be backed up on a backup card Smart Media Card before replacing the control unit Disconnect the furnace from mains Lift the top portion of the furnace and support it with a suitable object Remove the two Phillips screws below the control unit Lift up the control unit Disconnect the vacuum line and all connectors Disconnect the thermo couple wires Disconnect the protective earth wire on the control unit Reinstall the new control unit in reverse order Caution Watch for correct polarity of the connecting wires of the thermo couple The two terminals next to the vacuum sensor must be connected Perform a temperature test using the silver sample as described in Chapter 4 1 Note When transporting the furnace the touch screen display of the control unit must be protected with a suitable material On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Replacing the UO PCB interface Page Rev Index Chapter 6 3 Rev Date Procedure Observe the precautions listed in chapters 1 1 and 6 1 Disconnect the furnace from mains Lift the top part of the furnace and support it with a suitable object Remove the two screws below the control unit Lift up the control unit Disconnect the flat ribbon cable of the I O PCB from the control u
31. sor is Readjust pressing cylinder position sensor or replace if positioned incorrectly or defective defective E 13 Pressing cylinder position Pressing cylinder position sensor is Readjust pressing cylinder position sensor or replace if sensor not recognized positioned incorrectly or defective defective E17 Defective temperature Components on control unit PCB defective Replace control unit reference sensor E 20 Smart Media Card is not Smart Media Card inserted incorrectly Correct insertion path readable Defective card reader Replace UO PCB E 21 Smart Media Card is empty Smart Media Card containing no data was Save data to card inserted E 22 Smart Media Card contains Data incorrectly written to Smart Media Format Smart Media Card and repeat writing data invalid data Card E 23 Not enough furnace memory Furnace does not have enough memory to Delete any programs that are not required accommodate any additional programs P Silver wire test a Rev Index Chapter 4 1 Procedure Observe the precautions listed in chapters 1 1 and 6 1 This test is used to check the temperature of the chamber not to adjust the temperature to the ceramic material fired This test requires the silver wire test calibration kit Order Code D 03 532 803 The furnace must be pre heated at 600 C for at least one hour The easiest way to do this is setting the idle temperature in the Basic Set Up to 600 C changing to
32. source of the dust If that is not possible provide the staff with a dusk mask of grade FFP3 or comparable e Upon completion of the procedure any adhering dust must first be rinsed off the unprotected skin using cold water Only then can you wash off any residue with water and soap Wash work clothes separately from other clothes Before touching any electrical components touch a piece of blank metal to discharge any electrostatic charge We recommend the use of a grounding bracelet when working on electronic components Store and ship PCBs only wrapped in antistatic material such as aluminium foil Use the original packaging material if possible On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 0 Rev Date 27 Sept 2004 P Instruments and tools KR Rev Index 0 Chapter 1 2 Rev Date 27 Sept 2004 The following items are required for servicing the Multimat 2 Touch Touch amp Press Silver wire test calibration kit Checking the temperature of the Can be ordered as a spare chamber part Order Code 03 532 803 Smart Media card Storing the programs of the Multimat 2 Can be ordered as a spare Touch Touch amp Press part Order Code 54 6023 0100 gt So T CO CO E D Be D S D E A Dentsply International Company DeguDent Rev Index vm o E Lei oa o rz 5 ke N KZ 5 27 S
33. terminal bolts e Remove the thermo couple Install the new thermo couple in reverse order Note When installing the new thermo couple make sure that the two wires of the thermo couple do not make a short circuit Check for correct polarity when reinstalling the thermo couple Perform a temperature test using the silver sample as described in Chapter 4 1 On completion of any service or repair work the furnace must be tested as per the testing protocol outlined in Chapter 7 1 Page Replacing the gear motor DeguDent Rev Index 0 Chapter 6 7 Rev Date 27 Sept 2004 Procedure Observe the precautions listed in chapters 1 1 and 6 1 Disconnect the furnace from mains Lift the top part of the furnace and support it with a suitable object Remove the firing pressing base from the chamber Remove the two screws below the control unit Lift up the control unit Disconnect the vacuum hose and all connectors Disconnect the thermo couple wires Disconnect the protective earth wire from the control unit Carefully set the control unit aside Remove the two bolts on the outside of the RS232 interface connector Remove the two mounting screws of the I O PCB Remove the I O PCB Disconnect the motor cable Set the furnace aside Slightly loosen the counter bearing of the gear axis While holding the motor in position remove the two motor mounting screws Carefully pull the motor out of the counter bearing and remove it f
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