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KaVo KEY Laser III 1243, Technician'S Instructions

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KaVo KEY Laser III 1243 Technician'S Instructions Download Page 144

Technician's instructions KEY Laser III 1243
2 Measuring and configuration

 | 

2.2 Optical system

②Mounted sleeve Mat. no. 1.003.1439

③Mounted deflection mirror P Mat. no. 1.000.6266

④Threaded ring Mat. no. 0.574.2052

⑤Adjusted lens Mat. no. 1.001.0848

⑥Threaded ring key Mat. no. 1.000.6097

Transmission check

If you want to check the energy at the output of laser handpiece P 2061, the trans‐

mission factor must be taken into account.

The transmission factors for the various light wedges can be found in the "Instruc‐

tions for use of KEY Laser handpieces"

The measurement is taken with a distance of 70 mm between the energy meter and

the light wedge at a frequency of f = 4 Hz

The output is calculated as follows:

Energy set at the display X transmission factor = target energy at the output

Example (Blue light wedge, 160 mJ):

160mJ x 0.81 = 130mJ

Clean mounted deflection mirror P

▶ Screw off sleeve nut ① from the mounted sleeve ②

▶ Carefully pull the mounted deflection mirror P ③ out of the mounted sleeve ②

▶ Carefully clean the deflection mirror with a Q-tip and a slight amount of alcohol

▶ Change the O-ring 0.200.6174 on the spray pipe of the sleeve ②

▶ Carefully insert the mounted deflection mirror P ③ into the mounted sleeve ②,

and screw on the sleeve nut ①.

▶ Check the transmission.

Exchange mounted deflection mirror P

▶ Screw off sleeve nut ① from the mounted sleeve ②

▶ Carefully pull the mounted deflection mirror P ③ out of the mounted sleeve ②

▶ Change the O-ring Mat. no. 0.200.6174 on the spray pipe of the sleeve ②

▶ Carefully insert the mounted deflection mirror P ③ into the mounted sleeve ②,

and screw on the sleeve nut ①.

▶ Check the transmission

Clean the adjusted lens

▶ Screw off sleeve nut ① from the mounted sleeve ②

▶ Carefully pull the mounted deflection mirror P ③ out of the mounted sleeve ②

▶ In the inside of the mounted deflection mirror P ③, there is a threaded ring ④ in

which the adjusted lens ⑤ is inserted.

Use the threaded ring key ⑥ to carefully screw out the threaded ring from the

rear and remove it.

▶ Clean the lens with a lens cleaning paper and a bit of acetone while holding it

against slipping with a Q-tip

142/176

Summary of Contents for KEY Laser III 1243

Page 1: ...Technician s instructions KEY Laser III 1243 Always be on the safe side ...

Page 2: ...Sales KaVo Dental GmbH Bismarckring 39 D 88400 Biberach Tel 49 7351 56 0 Fax 49 7351 56 1488 Manufacturer Kaltenbach Voigt GmbH Bismarckring 39 D 88400 Biberach www kavo com ...

Page 3: ... tests 46 2 1 9 Commissioning adjustments 55 2 1 10 Static data setup 61 2 1 11 Diagnodent service 68 2 1 12 Start without security system 68 2 1 13 Software download 69 2 1 14 User mode error messages causes 71 2 1 15 Control computer status LEDs 73 2 2 Optical system 75 2 2 1 General cleaning of optical components 75 2 2 2 Er YAG crystal 76 2 2 3 HR PR mirror 85 2 2 4 Deflection mirror 94 2 2 5 ...

Page 4: ...Technician s instructions KEY Laser III 1243 Contents 3 8 Safety devices 173 3 9 Control unit 174 3 10 Mechanical system 175 3 11 KEY Laser complete 176 2 176 ...

Page 5: ...es the term laser mean The term laser is actually an acronym of terms describing the basic process in volved in the operation of lasers L ight Light a multiplication by Multiplication by s timulated stimulated e mission of Emission of r adiation Radiation The designation KaVo Key Laser is derived from the first letters of the company name and the substances of the laser medium used K aVo E rbium Y...

Page 6: ...r it is also possible to consider an electromagnetic wave as having a particle character Photons are the particles of the electromagnetic wave From a different point of view however it is also possible to say that the particle has a wave character This is termed wave particle dualism Depending on whether the wave or particle character is the essential aspect waves or particles photons are used to ...

Page 7: ...w of functions 1 1 Physical basics Collimation Laser radiation is strongly collimated i e the light rays are almost parallel This means that the laser beam does not increase much in diameter over extended di stances Laser 1 Conventional light source 5 176 ...

Page 8: ...of functions 1 1 Physical basics Monochromasia Laser radiation is monochromatic i e all light wave trains have the same frequency energy and wavelength the wavelength of the Er YAG laser is 2 94 µm 2 3 4 5 Intensity Laser light normal light Wavelength 6 176 ...

Page 9: ...verview of functions 1 1 Physical basics Coherence Laser radiation is coherent i e all light wave trains are exactly in phase with regard to both time and space 6 7 Laser spatial coherence temporal coherence Spatial coherence Temporal coherence 7 176 ...

Page 10: ...hieve even intensity distribution while ad justing the resonator Photographic paper or thermal paper can be used to approximately detect and eva luate the intensity distribution in the cross section of the beam 1 1 3 How does laser radiation form The following prerequisites must exist to produce laser radiation The laser medium To construct a laser you must first find a substance the laser medium ...

Page 11: ...aser which is the one used in the KEY Laser In fact any substances which are able to generate a population inversion see Energy levels section may be used as the laser medium 1 2 3 Metal holder KaVo pilot laser KaVo Er YAG laser crystal The optical resonator To explain how the optical resonator works we first need to turn our attention briefly back to electronics To generate a specific frequency o...

Page 12: ... 3 HR and AR mirrors is used to achieve an ex tremely high total amplification induced emission even though the amplifier 1 is usually weak Only the high total amplification can cause the oscillator amplifier and feedback loop to make the transition to the self excited state The laser reaches this state by itself due to its background noise spontaneous emission This is when the laser becomes activ...

Page 13: ...equency and wavelength KEY Laser 2 94 µm Amplifier laser medium Flash lamp power source 1 1 4 Processes involved in the creation of laser radiation Excitation of the laser medium Excitation of the laser medium Laser activity can only be obtained by population inversion of two energy levels in the laser medium To achieve this population inversion energy of a suitable form must be applied to the las...

Page 14: ...ical basics The process used for the therapeutic laser employed in the KEY Laser is excitation by high intensity light referred to as optical pumping Contrary to this the semiconductor laser used as the pilot laser in the KEY Laser is excited directly by electric current 12 176 ...

Page 15: ...ser and flashlamp operating mode Under optimal conditions the flashlamp should only emit light at the frequency best suited to pumping the laser medium Er YAG up to the higher energy level Since the laser transition uses only a part of the excitation energy the laser wave length generated Er YAG 2 94 µm is greater than the optimal pumping wavelength approx 780 nm to 840 nm for Er YAG Figure I show...

Page 16: ...o a higher level This process involves a large number of atoms However in order to actually generate a population inversion the number of atoms in which the higher energy level is populated must always be greater than the num ber of atoms in which the lower level is populated Only this can trigger the laser amplification Optical pumping cannot however cause a population inversion in a two level sy...

Page 17: ...vel E2 without radiation follows Then the laser transition from the longer lasting level E2 to the shorter lasting level E1 begins Due to its short life this level E1 drops to the base level E0 very rapidly at the onset of laser activity An important characteristic of this system is that the changes in population at the different energy levels occur in a cycle and therefore always end in the basic...

Page 18: ...by a quantum of radiation photon from the pumping energy source which must have exactly the energy differential EB EA to allow the transition from energy level EA to EB and absorption of the photon to take place The diagram shows the absorption process The electron is raised to a higher orbit Photon with the energy differential EB EA from the flashlamp or from the adjacent atom after spontaneous o...

Page 19: ... return to the base level EA after a very brief lingering period This process is termed spontaneous emission During this process the electron releases its energy in the form of electromagnetic radiation i e as a photon This photon possesses the energy EB EA The figure shows the process of spontaneous emission The electron drops back to a lower orbit Photon laser radiation with energy differential ...

Page 20: ...g original photon remains in existence This process is called induced emis sion Both photons have the same energy direction temporal and spatial phases This starts an avalanche effect which is amplified by the optical resonator since these photons reflected by the HR and AR mirrors move through the laser medium several times The result is a radiating laser light source The figure shows the process...

Page 21: ...ical applications and their characteristic wavelengths These include in particular the therapeutic laser Er YAG 2 94 µm and pilot laser indium gallium aluminium phosphite 635 nm which are both used in the KEY La ser 1 2 Excimer laser different wavelengths result depending on the gas mixture Nd YAG laser These harmonic wa velengths can be achieved by va rious measures 19 176 ...

Page 22: ...Technician s instructions KEY Laser III 1243 1 Overview of functions 1 2 Optical system 1 2 Optical system Lens system function 20 176 ...

Page 23: ...ting system Both are securely stored within a storage module 1 D E L X 1 X 7 X 14 X 15 X 16 X 17 X 4 X 8 X 6 X 3 X13 X11 2 K 2 D E L 2 g o d h c t a W 1 g o d h c t a W r e m m i S r e t t u h S y l p e r t t u h S r e b r o s b A y l p e r s b A y l p p u s g u l p t s e t K S E X 2 X 5 A 2 MB flash memory module is used for storing the control software The administration of the flash memory modu...

Page 24: ...Checks control exe file and starts the Zmodem reception in the event of errors 2 Control exe User mode software 3 Service exe Service software 4 Ztrans exe Zmodem transfer program to send and receive files via the external service interface COM 1 ATTENTION It is not possible to send or receive software if this file is missing or corrupted In this event the con trol unit should be replaced during s...

Page 25: ... Used for internal tests Start up process After the control computer is turned on the BIOS reports at the service interface The status information is reported at 9600 baud Then the ROMDOS operating sys tem starts and the commands in rominit bat are executed From this point on all the communication via the service interface is carried out at 19200 baud such as software updates reports etc After the...

Page 26: ... op period Reset the pulse counters and operating hours MP 0 6 reports Output of the device report on the service com puter MP 1 System control tests Menu for system tests MP 1 0 laser supply cooling s ON OFF Laser power supply cooling system compressor on off MP 1 1 flashlamp ON OFF Flash lamp on off MP 1 2 display input ports Display of all important input signals from the control computer MP 1 ...

Page 27: ... initialisation MP 3 1 change date Change date MP 3 2 change time Change time MP 3 3 choose language Choose a language depending on the available language files MP 3 4 software setup Not provided for a service do not change MP 3 5 factory commissioning mode On off of KaVo Factory startup mode MP 3 6 send user dat Send user dat to service computer MP 3 7 reload EEP file to display Sends k3_sde eep ...

Page 28: ...book Requirement An adapter cable for the service notebook is required for connecting the note book PC The adapter must have two nine pin socket connectors Connect adapter cable to the KEY Laser external service interface Com 1 of the KEY Laser control unit 1 Also connect the adapter cable to the service notebook such as Com 1 26 176 ...

Page 29: ...following parameters are required to communicate to the KEY Laser Bits per second 19200 Data bits 8 No parity Stop bit 1 Protocol flow control none A Microsoft Windows Hyper Terminal can be used as the communication software 1 2 Start the Hyper Terminal communications software on Windows 2000 for in stance under the following menu path Programs Accessories Communica tions Hyper Terminal Enter conn...

Page 30: ...uring and configuration 2 1 Control unit service program Select connection e g via Com 1 Note The selection depends on the respective configuration of the computer and must be individually adapted COM1 is used as an example 3 Choose OK to confirm 28 176 ...

Page 31: ... the following parameters Com 1 properties 19200 bits per second 8 data bits No parity 1 stop bit No protocol flow control Choose OK to confirm If the KEY Laser is started in user mode and the following information appears in the Hyper Terminal window Note Can vary slightly depending on the software version 29 176 ...

Page 32: ...mmunication with the control computer is for analysing errors in the soft ware or the control computer Direct communication with the current service program Connect the service notebook Launch the communications software in the service notebook See also 2 1 1 Service mode overview Page 24 Requirement Do not press the EMERGENCY OFF button Switch master switch to I 30 176 ...

Page 33: ...confirm Contrary to the start of the service program the code field continues to be displayed on screen Alternative methods Note You can also directly communicate with the control computer in the following man ner Start up the KEY Laser in service mode Keep the key operated switch turned as far as it will go to the right Switch off the service mode using the power off command The KaVo logo and Ple...

Page 34: ...uence you press the service key on the touch screen display the file service exe starts The DOS prompt appears for ente ring DOS commands The file rominit bat starts and swit ches the baud rate for the service interface to 19200 baud Use the command dir exe to display the files of the flash memory module The file rominit bat starts the file boot exe and tests the checksum of the file control exe N...

Page 35: ...z exe file to the notebook Enter the following command to send this file ztrans exe com1 s b19200 rsz exe A window is independently opened by the hyper terminal The message Upload complete confirms that the file transfer has been successful Sending files from the notebook to the KEY Laser Example Send service exe file to the KEY Laser Use the command ztrans exe com1 r b19200 to switch the KEY Lase...

Page 36: ...g and configuration 2 1 Control unit service program Use the Send function in the Hyper Terminal to select the required service exe file and to send this to the KEY Laser The message Upload complete confirms that the file transfer has been successful 34 176 ...

Page 37: ...itches the baud rate for the service interface to 19200 baud The file rominit bat starts the file boot exe and tests the checksum of the file control exe If during the boot sequence you press the service key on the touch screen display an attempt is made to start the file service exe Since the file is missing or damaged error message 27 appears and the control computer switches the service interfa...

Page 38: ...ol computer Depending on the file the baud rate can be 19200 9600 or 2400 In this case correspondingly configure the communication software for the hyperterminal 2 1 5 Switch KEY Laser service mode on off Note You do not necessarily need a service notebook for service mode The menus and commands of service mode are shown on the touchscreen display and can also be used Switch on Requirement Do not ...

Page 39: ... menu item Confirm Power off with System shutdown and then the KaVo Logo appear with the message PLEASE WAIT The KEY Laser turns itself off 2 1 6 The service mode main menu The main menu of the service mode provides information on Software Version Menu item Current date Seven separate menus and the Power off command are displayed The separate menus are described in detail in the following sections...

Page 40: ...ward Once the bottom selection position of the menu has been reached renewed actua tion moves the selection bar to the top position Moves the selection bar directly to the top position Moves the selection bar directly to the bottom position Confirms the selection and jumps to a separate menu or executes the selected command 2 1 7 Operating control This command is used to control operations Selecti...

Page 41: ...er 2 of the KEY Laser Press the EXIT key to return to the Operating Control menu Display pulse counter Meaning Display pulse counter The command Display pulse counter displays the pulse counter with the date of the last time at the pulse counter was deleted and the current date The total of individual laser pulses per energy frequency level is displayed Touch the touchscreen display to return to t...

Page 42: ... the operating period The Display operating period command displays The operating period since initial start up with the date The operating period since the counters were last cleared Command clear counters op period with the date The date the last energy safety check was carried out Choosing continue will return you to the operating control menu 1 2 3 5 4 40 176 ...

Page 43: ...at month day year time and operating period The last 30 errors Choosing OK returns you to the operating control menu 1 2 3 Display energy error list This command is used to dispay the energy errors The Display energy error list command displays the following The selected energy errors with the date 1 in the following format month day year the time 2 and the frequency energy combination 3 The last ...

Page 44: ...ortant KEY laser com ponents Only delete the pulse counter after express instructions from KaVo Confirm the command Clear counters op period with OK and the following safety query appears If you confirm the safety query with YES the pulse counter and operating hours are deleted SINCE OPERATING PERIOD The date SINCE OPERATING DATE is re placed with the current date In the Operating control menu the...

Page 45: ...mmand is used to send reports The Report command sends the report via the service interface to the notebook with the following data KEY Laser serial number Software Version date and operating hours of first start up Operating hours since the last deletion The date since the last Safety check The control value table 43 176 ...

Page 46: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 1 Control unit service program Measured value table Error list Pulse counter 44 176 ...

Page 47: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 1 Control unit service program 13 Error list on energy deviations 45 176 ...

Page 48: ... Note The EXIT key returns you to the main menu Laser supply cooling s ON OFF This command is used to switch the laser power supply and cooling system on and off Note Do not touch live parts Choose OK to confirm the Laser supply cooling s ON OFF command Start up the laser power supply and cooling system The message Wait FOR NT OK is displayed in the status bar The message LASER POWER SUPPLY ON is ...

Page 49: ...ge LASER POWER SUPPLY OFF is displayed in the status bar 1 Flashlamp ON OFF This command is used to turn the flashlamp on and off Note For the flashlamp to work the laser power supply must first be turned on Otherwise when you confirm the command CAN T SIMMER appears in status line 1 Note Do not touch live parts Start up the laser power supply Choose OK to confirm the Flashlamp ON OFF command 47 1...

Page 50: ...ns KEY Laser III 1243 2 Measuring and configuration 2 1 Control unit service program The message WAIT FOR SIMMER appears in the status bar When the flashlamp is lit the message SIMMER OK is displayed in the status bar 48 176 ...

Page 51: ...f the shutter is activated uninterrupted motor connected and open 0 ABS STATUS Status 1 absorber activated but interrupted Status must be 0 if the shutter is activated uninterrupted motor connected and open Checking the shutter absorber locking device Press the SHUT ABS ON OFF button The absorber opens The feedback signal from the absorber light barrier reads 1 open The shutter is activated but sh...

Page 52: ...test This is the footcontrol test Choose OK to confirm the Footcontrol test command The status of both the foot switch and the SLIDE function foot operated poten tiometer check not in use with the KEY Laser will be displayed When the individual switches are activated the display will change to 0 Touch the touch screen display to return to the System control tests menu 50 176 ...

Page 53: ...orber reset position swivelled in Shutter reset position swivelled in The term swivelled in indicates that the laser beam is interrupted Swivel out absorber Swivel out shutter The term swivelled out indicates that the laser beam is released Error detection 1 If the shutter and or absorber remains defective in the closed position the mes sage Position error Timeout error for the shutter and or abso...

Page 54: ... volume level 1 To test the speaker and the amplifier the frequency can be varied between 10 Hz and 10 kHz and the sound volume between 1 and 10 2 1 To set the volume with the hardware the loudness in service mode must be set to 10 Then potentiometer P12 of the VEM board is used to adjust the transition and the volume slowly begins to decrease Press EXIT to return to the System control tests menu ...

Page 55: ... outputs selection menu The current switching status is shown in the status line Test external lamp Switches the relay contact for the external warning light on and off max 24 volts 1 ampere Test warning lamp Switches the yellow emissions warning light on and off 0 on 1 off Test SHUTTER Opens and closes the shutter Test ABSORBER Opens and closes the absorber Test PHS Switches the Peak Hold Select ...

Page 56: ...nfirm Check the voltage using a voltmeter Test internal beeper Activates the beeper in the control unit Choose EXIT to return to the Test outputs menu Choose EXIT once again to return to the SYSTEM CONTROL tests menu Display ADC channels Meaning Display the AD channels The command Display ADC channels displays the offsets of the energy measuring channels 1 and the temperature 2 of the cooling wate...

Page 57: ...ray switches off The message SPRAY OFF is shown in the status bar Test Display This function is used to test the touch screen display Confirm the Test display command with okay All 60 keypads can be tested To return to the System control tests menu press the key combination 10 and 60 2 1 9 Commissioning adjustments This function is for commissioning and making adjustments to the configuration Note...

Page 58: ...electing this command will bring up the following submenu To return to the main menu choose EXIT Select energy power meter This function is used to select the energy power meter Note Only properly adjusted energy meters are permitted for the KEY laser Follow the SERVICE UPDATE on adjusting energy meters 56 176 ...

Page 59: ... program Choose OK to confirm the Select energy power meter command To return to the Commissioning adjustments menu choose EXIT Select the required energy power meter Ophir NOVA Gentec EM1 or Gentec PRJ M and choose OK to confirm Example status Ophir selected the Ophir power meter is selected 57 176 ...

Page 60: ...menu Commissioning adjustments appears Resonator adjustment This function is used to adjust the resonator Note Follow all assembly instructions Note The laser power supply unit the cooling system the compressor and the flash lamp switch on automatically Choose OK to confirm the Resonator adjustment command The laser pulse generator is on standby together with the drive for 80 mJ 6 Hz Use the key O...

Page 61: ... on standby together with the drive for 250 mJ 15 Hz Use the key ON OFF Laser to start and stop the laser pulse generator Choose EXIT to return to the Commissioning adjustments menu Power measuring unit adj VEM This function is used to adjust the energy power measuring unit Note Follow all assembly instructions Note The laser power supply unit the cooling system the compressor and the flash lamp s...

Page 62: ...artup is found in the assembly instructions Manual energy adjustment This function is used to perform a manual energy adjustment Note The entire description of startup is found in the assembly instructions Manual laser pulse generator Note Meaning Manual laser pulse generator Note The entire description of startup is found in the assembly instructions Display control tables Choose OK to confirm th...

Page 63: ... Touch the screen The MEASURED VALUE TABLE is displayed Energy safety check Note Meaning Safety check of energy Note The entire description of startup is found in the assembly instructions 2 1 10 Static data setup The following submenu appears after the selection To return to the main menu choose EXIT 61 176 ...

Page 64: ... language setting is reset to German If a serial number is not in the control computer upon the production startup or after exchanging the control computer the serial number of the KEY Laser must be en tered Make sure you enter the initial zeros 0000xxx or 1000xxx The serial number must exactly correspond to the one on the rating plate since otherwise the release codes for Detect and Feedback woul...

Page 65: ... Change date This function is used to change the date Choose OK to confirm the Change date command To abort and return to the Static data setup menu choose EXIT 1 2 The date currently being used by KEY Laser is displayed 1 Enter the correct date in month day year format Place a hyphen between the month day and year Choose ENTER to confirm the new date This brings up the Static data setup menu Chan...

Page 66: ...e EXIT The time currently being used by KEY Laser is displayed 1 2 Enter the correct time in hour minute second format Place a colon between the hours minutes and seconds Choose ENTER to confirm the new time This brings up the Static data setup menu Choose language This function is used to choose the language Note The language selection is for the user mode The service mode language is always Engl...

Page 67: ...made in a standard initialisation restore the specified settings factory commissioning mode This function is used for turning KaVo factory commissioning mode on or off Note This menu item is not for service and is only for initial startup at KaVo Note The plant startup mode generally has to be switched off In the selection the fol lowing must appear Standard Mode Attention fiber swing arm and spra...

Page 68: ...e service notebook to the KEY Laser and start the communication software see sections D1 and D1 1 Select the desired target folder in the communication software Confirm the Send user dat command with okay Press the No key to prematurely return to the selection menu Static data setup Confirm This copies user dat to terminal PC with YES The file is copied to the selected target folder in the service...

Page 69: ...ack mode the Detect and Feed back mode can be activated or deactivated by entering two codes These codes depend on the serial number of the KEY Laser 1243 The activation codes for all KEY Lasers from SN 101 to SN 220 are listed in a table in the service update Exchanging the control computer starting software version 2 15 Starting with SN 221 the codes are on a sticker near the energy measuring he...

Page 70: ...ser and only the PA handpiece is in the menu selection In addition the pilot laser only shines as long as an er YAG laser beam is not ge nerated 2 1 11 Diagnodent service This function is used for the Diagnodent service Unmodulated pilot laser output See also First use 2 1 12 Start without security system Meaning The KEY Laser starts in user mode without safety shutoffs Note This operating mode is...

Page 71: ... This command restarts the KEY Laser All safety cut outs are disabled Only use this mode for testing Choose YES to confirm The KaVo logo is displayed briefly together with the message control exe start in X Mode Never use this mode for application Choose Continue the KEY Laser starts up without a security system showing the user interface Switch off the KEY Laser to disable this mode 2 1 13 Softwa...

Page 72: ... the main menu in service mode The following request is displayed Please start the send function of your terminal program Hyper Terminal Select the Send command in the communications program Select the files for the required software version from the service notebook di rectory Note Use the command to send all of the files in the folder Note Do not send any files that are not a part of the KEY Las...

Page 73: ...EADY The footswitch button has been depressed FIBRE NOT CONNECTED Fibre laser hose contact not connected to laser hose coupling SPRAY CONTAINMENT EMPTY Spray containment empty DOOR OPEN DOOR INTERLOCK Door contact open No strapping plug INVALID PROGRAM NAME Program name already used NO MORE PROGRAMS CAN BE CREATED Program memory full max number of user defined programs reached HOLDER SWITCH ACTIVA...

Page 74: ...tive Simmer chopped or not triggered ERROR IN COOLING CIRCUIT No water flow or cooling water temperature to high flow sensor not connected or defective analogous tempe rature signal Temp still too high after cooling mode ERROR IN LASER POWER SUPPLY Signal Water from LNT active error in LNT cooling wa ter conductivity to high LNT monitoring ERROR IN CHARGING CIRCUIT Charge not reached directly befo...

Page 75: ...g of the software Shines permanently while the con trol software is active control exe service exe Watchdog1 gn Program watchdog of the software Shines permanently while the con trol software is active control exe When some functions are being executed in service mode and the LNT is turned off for example du ring a software download the the LED can go dark when the LNT is turned off the watchdog f...

Page 76: ...are applied via X8 shines red when one of the vol tages is missing Status table of the LEDs on the KEY 3 control computer E On shines A Off B Flashes Flashes along with the emission display and hence the pulse Shutter and Shutt Reply flash along with the set frequency ye yellow gn green rd red Statuses LED 1 ye LED 2 ye Wdg 2 gn Wdg 1 gn K2 rd Sim mer gn ESK gn Shut ter rd Shutt Re ply gn Ab sor b...

Page 77: ...rectly optical components may be rendered useless Never touch the coated optical surfaces with bare hands Always protect the coated surfaces against soiling and damage of any kind Before disassembly use an air blower to remove any loose dirt Remove the optical components in accordance with the Service Technician s instructions Sprinkle 99 acetone over the entire surface of the optical component Sl...

Page 78: ... 2 2 Er YAG crystal Note The input block is adjusted to the installed Er YAG crystal If the Er YAG crystal is defective the Kit Measure exchange input block Mat no 1 001 7692 must be exchanged The Measure input block kit contains an Er YAG crystal and an input block that is adjusted to the provided Er YAG crystal in the Z axis Check the Er YAG crystal end surfaces Switch off the KEY Laser Remove t...

Page 79: ...2 2 Optical system Mount the mouth mirror Mat no 0 236 2507 between the HR mirror and the crystal end surface and visually inspect the crystal and surface 1 Use the same principle to visually check the crystal end surface facing the PR mirror 2 Switch off the KEY Laser 77 176 ...

Page 80: ...ve the Er YAG crystal Page 78 2 2 2 Clean the Er YAG crystal end surfaces Page 79 2 2 2 D 2 2 4 Installing the Er YAG crystal Page 80 Following this perform a complete alignment to check whether energy loss has occurred Remove the Er YAG crystal Disconnect the ignition contact and unscrew the two flashlamp connections 1 2 3 4 To prevent damage to the flashlamp connection unscrew the HR mirror with...

Page 81: ... KEY laser 6 7 5 Place the pump chamber on a lint free cotton cloth Remove the two flanges and O rings of the Er YAG crystal Carefully pull the Er YAG crystal axially out of the pump chamber with the sleeves and also place on the lint free cotton cloth Clean the Er YAG crystal end surfaces After opening the nut carefully pull the crystal sleeve off the Er YAG cry stal turning it on its axis 1 2 79...

Page 82: ...y screw the nut onto the crystal sleeve and pull the crystal sleeve over the Er YAG crystal 5mm until it reaches the lens cleaning paper Carefully screw the nut on tight Remove the second crystal sleeve and clean the second end face in the same way Remount the crystal sleeve D 2 2 4 Installing the Er YAG crystal Note You cannot install another Er YAG crystal since the input block is adjusted to th...

Page 83: ...fully shove the Er YAG crystal axially with the sleeves back into the pump chamber 6 7 Affix the two O rings and lightly screw on the flange centre the Er YAG crystal and then tightly affix the flange 6 7 Requirement Be particularly careful of the flash lamp connections and do not damage them 81 176 ...

Page 84: ...rews into the KEY laser and screw it tight Make sure that the flash lamp lines are run correctly according to the drawing and tightly remount the HR mirror with the holder To make subsequent optical adjustment easier mount the HR mirror parallel to the pump chamber Reinsert the contact Pay attention to the cathode and anode connection 82 176 ...

Page 85: ...easuring and configuration 2 2 Optical system Screw on the flash lamp lines Start the KEY Laser in the service mode Switch the flash lamp to simmer mode with the commands system control tests laser supply cooling s on off and flashlamp on off 83 176 ...

Page 86: ...2 Measuring and configuration 2 2 Optical system Use the mouth mirror Mat no 0 236 2507 to check the seal of the two crystal end surfaces Check the seal of the pump chamber Then perform a complete adjustment according to these instructions 84 176 ...

Page 87: ...s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system 2 2 3 HR PR mirror Check the HR PR mirror surfaces Switch off the KEY Laser Remove the hood and cover of the optical system 85 176 ...

Page 88: ...on the mirror surfaces the HR and or PR mirror must be removed cleaned and reinstalled in accordance with the instructions See also 2 2 3 Remove HR PR mirror Page 86 2 2 3 Clean the HR PR mirror surfaces Page 89 Then perform a complete alignment to assess the energy loss Remove HR PR mirror Note Do not exchange the two mirrors with each other First remove one mirror clean it and reinstall it befor...

Page 89: ... mirror with holder First completely unscrew the middle fixing screw of the HR mirror holder 1 Then slightly loosen the other two fixing screws and push the HR mirror holder to the right Now completely unscrew the two fixing screws and remove the HR mirror with its holder from the KEY Laser 87 176 ...

Page 90: ...R mirror with holder First completely unscrew the middle fixing screw of the PR mirror holder Then slightly loosen the other two fixing screws and push the PR mirror holder to the left Now completely unscrew the two fixing screws and remove the PR mirror with its holder from the KEY Laser 88 176 ...

Page 91: ...mirror and PR mirror with holders onto it Carefully unscrew the knurled nut and remove the washer the O ring and the HR mirror from the holder Remove the PR mirror in the same way Clean the HR PR mirror surfaces Sprinkle 99 acetone over the surface of the HR mirror n o t e c A 9 9 Use a cotton bud with a wooden stem to prevent the HR mirror from slipping 89 176 ...

Page 92: ...es before it reaches the end of the lens cleaning paper Clean the second HR mirror surface and the two surfaces of the PR mirror in the same way Mount the HR PR mirror surfaces Note The character on the lateral surface of the mirror points toward the coating Installation direction of the HR and PR mirrors Coating in the direction of the Er YAG crystal HR Er YAG PR Do not confuse the two mirrors In...

Page 93: ...ian s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Install in the following sequence HR PR mirror Mat no 4 O ring Mat no 5 WasherMat no 6 Knurled nut Mat no 7 4 7 5 6 91 176 ...

Page 94: ... If necessary shove in with a Q tip Place the O ring and the washer on the HR mirror and screw the HR mirror tight with the knurled nut Install the PR mirror in the holder using the same method CAUTION Damage resulting from improper use Damage to flashlamp cables Exercise extreme caution Insert the three fixing screws into the HR mirror holder and fit the HR mirror with holder into the KEY Laser 9...

Page 95: ...on 2 2 Optical system First gently screw in the two outer screws push the holder to the left and screw in the middle screw Tighten all three screws Insert the three fastening screws into the PR mirror holder and insert the PR mirror with the holder into the KEY laser 93 176 ...

Page 96: ... screw in the middle screw Tighten all three screws To make subsequent optical adjustment easier mount the HR and PR mirror holders parallel to the pump chamber Then perform a complete adjustment according to these instructions 2 2 4 Deflection mirror Check the surfaces of the deflection mirror Switch off the KEY Laser Remove the hood and cover of the optical system 94 176 ...

Page 97: ...are visible on the mirror surfaces remove clean and reinstall the mirror of energy measurement unit and the mirror of pilot input unit in accordance with the Service Technician s instructions See also 2 2 4 Remove the deflection mirror Page 96 2 2 4 Clean the surfaces of the deflection mirror Page 98 2 2 4 Install the deflection mirror Page 99 Then perform a complete alignment to assess any energy...

Page 98: ...1 2 Unplug the two connecting plugs 2 screw out the two fastening screws 1 and remove the deflection lens system from the KEY laser Place the deflection lens system on a lint free cotton cloth Mat no 1 001 8616 Note Do not exchange the two mirrors with each other First remove one mirror clean it and reinstall it before removing the second mirror 96 176 ...

Page 99: ... measuring mirror 4 3 Screw out the 4 fastening screws lay the two part cover and O ring aside and carefully remove the energy measurement mirror out of the holder Remove the pilot input Screw out the 4 fastening screws lay the cover and O ring aside and carefully remove the pilot input out of the holder 97 176 ...

Page 100: ...ions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Clean the surfaces of the deflection mirror Sprinkle 99 acetone over the surface of the mirror of the energy measure ment unit n o t e c A 9 9 98 176 ...

Page 101: ... evaporates before it reaches the end of the lens cleaning paper Clean the second surface of the energy measurement unit mirror and the two surfaces of the pilot input unit mirror in the same way Install the deflection mirror Note The character on the lateral surface of the mirror points toward the coating The installation direction of the energy measurement mirror and the pilot input Coating in t...

Page 102: ...2 Optical system Comply with the following installation sequence Mirror O ring Cover 6 5 3 4 Installing the mirror of the energy measurement unit Using tweezers hold the mirror of energy measurement unit by its lateral surface and carefully insert into the mirror holder 100 176 ...

Page 103: ...ing a cotton bud Place the O ring on the mirror of the energy measurement unit and screw tight the two part cover according to the drawing Installing the mirror of the pilot input unit Fit the pilot input unit mirror into its holder in the same way Use the one part cover to fix the mirror of the pilot input unit 101 176 ...

Page 104: ...d configuration 2 2 Optical system Insert the deflection optical system into the KEY Laser and fix with the screws Connect the two connecting cables and Insert the screen correctly into the terminal strip Ensure that all screens make good earth contact 102 176 ...

Page 105: ...2 2 5 Lens coupling Note The lens in the input block is harmonised with the Er YAG crystal in the Z axis This is done by a spacing ring that is made by KaVo specially for this adjustment Hence the input block and or the lens can only be exchanged in the Measure exchange input block kit Mat no 1 001 7692 The Measure input block kit contains an Er YAG crystal and an input block that is adjusted to t...

Page 106: ...m Check lens surfaces Switch off the KEY Laser Remove the hood and cover of the optical system 1 Note It is easier to identify contamination and damage to the lens when it is removed Unscrew laser hose and carefully set it down with the instrument Seal the fibre ends 1 with rubber caps 104 176 ...

Page 107: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Using a plane mouth mirror perform a visual check of both lens surfaces 105 176 ...

Page 108: ... If any spots or dots were visible on the lens surfaces remove clean and reinstall the lens in accordance with sections D 2 5 2 D 2 5 5 Then perform a complete alignment to assess any energy loss Dismantle the laser hose coupling Note Required special tool Allen wrench Mat no 1 000 7108 106 176 ...

Page 109: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system 2 1 3 Unscrew bonding 1 and disconnect connection 2 Unscrew safety switch 3 107 176 ...

Page 110: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system 4 5 Disconnect the water 4 and air 5 spray connections 108 176 ...

Page 111: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Unscrew the laser hose coupling 4 screws 7 109 176 ...

Page 112: ... 8 material number 1000 7108 unscrew the adapter photo sensor 6 Carefully remove the spring filter 9 and diode housing 10 from the laser hose coupling Remove lens Requirement 10 mm open ended spanner 2 mm Allen wrench Tweezers set collar key material No Mat no 1 000 6907 Lens key 4 material number Mat no 1 000 7109 110 176 ...

Page 113: ...ng and configuration 2 2 Optical system 5 5 1 7 6 5 5 6 7 2 3 4 Loosen the hexagonal nuts 5 with the flat wrench and unscrew the spring loaded parts 6 by two turns of the allen key Unscrew the adjusting screws 7 with two turns of the allen key also 111 176 ...

Page 114: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system 3 8 Using the adjusting ring key 3 completely unscrew the ajdusting ring 8 112 176 ...

Page 115: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system 9 Pull the lens holder 9 out of the laser hose coupling 113 176 ...

Page 116: ...em 10 11 Using the lens key 10 unscrew the threaded ring 11 and remove the lens from its holder Do not dismantle the lens holder any further The specially manufactured spacer ring must remain installed within the lens holder Note Only hold the lens on the lateral surface with tweezers 114 176 ...

Page 117: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Clean the lens surfaces Sprinkle 99 acetone over the lens surface 115 176 ...

Page 118: ...h a wooden stem to prevent the lens from slipping Place a sheet of lens cleaning paper over the lens and without applying any pressure wipe over the lens surface Wipe at a speed whereby the acetone evaporates before it reaches the end of the lens cleaning paper Clean the second lens surface in the same way 116 176 ...

Page 119: ...2 Measuring and configuration 2 2 Optical system Reinstall lens 1 Insert lens into lens holder 1 convex side down making sure that the lens is completely horizontal in the lens holder Using the lens key screw the threaded ring on securely 117 176 ...

Page 120: ...and configuration 2 2 Optical system Position the lens holder 1 making sure that the four adjusting screws are poin ting to the centre of the bearing surface area Insert lens holder into laser hose coupling in this position until it reaches setting 2 118 176 ...

Page 121: ...Input block basic adjustment Note INFO To later couple in B 4 6 Assembly Instructions the laser beams into the fibers of the laser hose the full adjusting range of the x y axes must be available The input block must undergo a basic adjustment after removal Requirement Tools Autocollimator glass plate 2 mm and 2 5 mm Allen wrenches 10 mm open ended spanner 119 176 ...

Page 122: ...oint of the lens must be visible in the autocollimator relative to the reflection point of the glass plate Use these spring pressure pieces and adjusting screws to place the reflection point of the lens over the reflection point of the glass plate 5 6 5 6 This setting must be made when both spring pressure pieces and both adjusting screws are screwed in completely Now screw out the two spring pres...

Page 123: ...r III 1243 2 Measuring and configuration 2 2 Optical system Install laser hose coupling 8 9 7 Insert the filter the springs and the diode of the adapter for the photosensor into the diode seat and screw tight to the input block 121 176 ...

Page 124: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system 11 10 Connect and secure the water 10 and air 11 spray connections 122 176 ...

Page 125: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Screw down the laser hose coupling tightly 123 176 ...

Page 126: ...g and configuration 2 2 Optical system 13 12 14 Screw down bonding 12 tightly and connect connection 13 Screw the safety switch 14 down tightly Note Startup should then follow installation instructions at least from the section Input block position 124 176 ...

Page 127: ...de by KaVo specially for this adjustment The spacer ring is mounted in the lens holder of the input block The input block of the lens of the Er YAG crystal can therefore only be exchanged by exchanging the entire assembly Measure exchange input block Mat no 1 001 7692Mat no 1 001 7691 new The Measure input block kit contains an Er YAG crystal 1 and an input block 2 that is adjusted to the provided...

Page 128: ...tical system Replace laser hose coupling Switch off the KEY Laser Unscrew laser hose and carefully set it down with the instrument Seal the fibre ends 1 with rubber caps Remove the hood and cover of the optical system Note Required special tool Allen wrench Mat no 1 000 7108 126 176 ...

Page 129: ...nstructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Unscrew bonding and disconnect connection spray connections Unscrew safety switch Disconnect the water and air spray connections 127 176 ...

Page 130: ... Measuring and configuration 2 2 Optical system Unscrew the old laser hose coupling Use the Allen wrench Mat no 1 000 7108 to unscrew the photosensor ad apter Carefully remove the spring the filter and the diode seat out of the input block 128 176 ...

Page 131: ...cal system Insert the filter the spring and the diode with adapter photo sensor into the diode housing and screw tightly onto the new laser hose coupling Remove the label and attach it to the dismantled laser hose coupling Connect and secure the water and air spray connections 129 176 ...

Page 132: ...243 2 Measuring and configuration 2 2 Optical system Screw down the laser hose coupling tightly Screw down bonding tightly and connect connection Screw down safety switch tightly and fit the laser hose back onto the laser hose coupling 130 176 ...

Page 133: ...ical system Replace the Er YAG crystal Disconnect the ignition contact and unscrew the two flashlamp connections Note In order not to damage the flash lamp connection unscrew the HR mirror wiht holder 3 Open the vent screw to let the cooling water flow back into the reservoir 131 176 ...

Page 134: ...he pump chamber 5 and carefully lift the pump chamber out of the KEY Laser Place the pump chamber on a lint free cotton cloth Remove the two flanges and O rings of the Er YAG crystal Carefully pull the old Er YAG crystal out of the pump chamber by its sleeves and on its axis and also place on the lint free cotton cloth 132 176 ...

Page 135: ...tion 2 2 Optical system Carefully push the new Er YAG crystal by its sleeves and on its axis into the pump chamber Mount the two O rings gently screw on the flanges centre the Er YAG crystal and then tighten the flanges Note Do not damage the flash lamp connection 133 176 ...

Page 136: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Replace the pump chamber in the KEY Laser and use the fixing screws to screw on tight 134 176 ...

Page 137: ...and configuration 2 2 Optical system Ensure correct routing of the flashlamp cables according to the drawing and reinstall the HR mirror with its holder Note To make subsequent optical adjustment easier mount the HR mirror parallel to the pump chamber 135 176 ...

Page 138: ...attention to the cathode and anode connection Screw on the flash lamp lines Start the KEY Laser in the service mode Use the commands system control tests laser supply cooling s on off to start and vent the cooling system Mat no 8 see assembly instructions Use the command flashlamp on off to switch the flash lamp in simmer mode 136 176 ...

Page 139: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Use the mouth mirror Mat no 0 236 2507 to check that the two end faces of the crystal are airtight 137 176 ...

Page 140: ...nstructions KEY Laser III 1243 2 Measuring and configuration 2 2 Optical system Check that the pump chamber is airtight Note Startup should then follow installation instructions at least from the section B 4 138 176 ...

Page 141: ...m Send the gauged input block assembly to the KaVo repair service indicating the problem serial number of the KEY laser control and measured value tables as well as the pulse counter 2 2 7 Laser angle piece 2060 gift the output of the 2060 laser angle piece is insufficient one reason may be that the coated mirror 1 000 4852 and or the mounted window 1 000 4847 are dirty or damaged In this case the...

Page 142: ...of the exit window and then carefully screw the window onto the laser angle piece If the exit window Cannot be cleaned it needs to be completely replaced Mat No 1 000 4847 CAUTION Damage from dirt particles Dirt particles can collect on the lens system and destroy it Make sure that no dirt particles fall into the angle piece when exchanging the window Clean the deflection near Make sure that the K...

Page 143: ... no 1 000 4852 If the deflection mirror has to be positioned this can be done using a Q tip Use the Allen wrench to carefully screw tight the sleeve that keeps the mirror in its position Exchange the O ring 0 200 6120 of the exit window and then carefully screw the window onto the laser angle piece CAUTION Damage from dirt particles Dirt particles can collect on the lens system and destroy it Make...

Page 144: ...deflection mirror P out of the mounted sleeve Carefully clean the deflection mirror with a Q tip and a slight amount of alcohol Change the O ring 0 200 6174 on the spray pipe of the sleeve Carefully insert the mounted deflection mirror P into the mounted sleeve and screw on the sleeve nut Check the transmission Exchange mounted deflection mirror P Screw off sleeve nut from the mounted sleeve Caref...

Page 145: ...P out of the mounted sleeve In the inside of the mounted deflection mirror P there is a threaded ring in which the adjusted lens is inserted Use the threaded ring key to carefully screw out the threaded ring from the rear and remove it Use a tweezers to carefully place the new lens without the provided spacing ring onto the threaded ring with the flat surface facing the deflection mirror Use the t...

Page 146: ...sted to each other in the plant and may only be exchanged together Transmission check If you want to check the energy at the output of laser handpiece E 2062 the trans mission factor must be taken into account The transmission factors for the various fibre plugs and frequencies can be found in the Instructions for use of KEY Laser handpieces A distance of 30 mm between the energy meter and fiber p...

Page 147: ...ht Screw the lens holder onto the coupling Change the O ring Mat no 0 200 6220 on the coupling Screw the coupling back into the grip sleeve Check the transmission Exchange the adjusted lens Screw off the grip sleeve from the coupling Screw off the lens holder from the coupling The lens holder contains a spacing ring lens and a threaded ring Use the threaded ring key to screw the spacing ring lens ...

Page 148: ... No 1001 5082 Voltages 100 110 120 127 volts 50 60 Hz Specially for Japan Fuse protection 20 A 2 3 1 Removal of supply connection 230 Volt 50 60 Hz Switch off the KEY Laser and disconnect the mains cable from the mains socket and the KEY Laser Remove the rear panel and side and front covers Carefully unscrew the com pressed air cylinder to allow the system air to escape 1 When the compressed air s...

Page 149: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Connect L N to the mains filter input port 147 176 ...

Page 150: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Open cable ties Unscrew clamp no longer required when installing external voltage transformers 148 176 ...

Page 151: ...ician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Disconnect plugs X 5 service notebook connection and X 7 door switch ext warning lamp from the control unit 149 176 ...

Page 152: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Disconnect the two ground wires 2 150 176 ...

Page 153: ...n 2 3 Electrical system Unscrew the 4 fixing screws and remove the 230 volt connection with mounting bracket from the KEY Laser 3 2 3 2 Install external voltage transformers Requirement Before installation select the desire input voltage 100 110 120 127Volt 50 60 Hz 151 176 ...

Page 154: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system For this purpose connect the input cable to the appropriate terminal 152 176 ...

Page 155: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Mount the data sticker associated with the selected input voltage 153 176 ...

Page 156: ... 3 Electrical system Using a waterproof pen cross out the information relating to voltage and current on the KEY Laser s rating plate In order to be able to push in the external voltage transformer the screws of the hose clamps cooler connections must point downwards 5 154 176 ...

Page 157: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Stick the rating plate onto the mounting plate of the external voltage trans former 6 155 176 ...

Page 158: ... s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Installation Lay cable X 7 over the mounting plate and push the external voltage transformer into the mounting aid 6 156 176 ...

Page 159: ...aser III 1243 2 Measuring and configuration 2 3 Electrical system Use a shorter mounting screw beneath the control unit 8 7 Fix the external voltage transformer with the 4 sleeves and 4 mounting screws as shown in the drawing 157 176 ...

Page 160: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Plug in L N line filter input Plug in protective conductor 9 158 176 ...

Page 161: ...uctions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Plug in plugs X 5 connection to the service notebook and X 7 door switch ext Warning light into the control computer and screw tight 159 176 ...

Page 162: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system Fix all lines with cable tie 6 160 176 ...

Page 163: ...t electronics when the distance standard is mounted When one of the following components are exchanged they must all be electrically adjusted to each other the KEY 3 Diagnodent electronics Mat no 1 000 4271 VEM distributor energy measuring electronics Mat no 1 000 7724 adapter pho tosensor Mat no 1 000 4249 and pilot laser Mat no 1 000 5631 This is done when the distance standard is mounted Mat no...

Page 164: ...he hose Unmodulated in service mode 1 mW Modulated in detect mode 0 2 mW Check Diagnodent Values In user mode with laser handpiece P2061 and light wedge 1 65 program 11 Periodontol 2061 gr K Adjust the detector according to the instructions for use After adjustment the momentary value must be 00 when the handpiece is di rected to the floor Place the mounted distance standard on the light wedge and...

Page 165: ...Technician s instructions KEY Laser III 1243 2 Measuring and configuration 2 3 Electrical system 163 176 ...

Page 166: ... Ignition system Component Work to be performed Replacement interval Parts to be replaced if ne cessary In service mode switch on MP1 0 laser supply coo ling system on off and check ignition behaviour with MP 1 1 flashlamp on off Flashlamp Mat no 1 000 7711 Ignition transformer Mat no 1 000 7714 Always replace the old ignition transformer versi on approx 22 mm with the new version 17 mm 164 176 ...

Page 167: ...e flow sensor with MP 1 2 dis play input ports and tem perature sensor with MP 1 7 display ADC chan nels Flow monitor Mat no 1 000 7730 Temperature sensor Mat no 1 001 3527 Pump chamber Exchange the O rings of the flash lamp Replace the coolant water Insert new ion exchanger Start cooling system For details see assembly in structions 2 x O rings flash lamps Mat no 1 000 7720 NOTE Change the O ring...

Page 168: ...ange pressure spring Replace O ring Check valve screw Check piston check ease of movement Replace O ring Replace O ring Replace O ring Exchange O ring and gre ase slightly O Ring Mat no 0 200 6071 Plunger Mat no 0 210 2402 Pressure spring Mat no 0 201 7035 O Ring Mat no 0 200 6047 2 x O rings Mat no 0 200 6008 O ring Mat no 0 200 6221 O ring Mat no 0 200 6224 O ring Mat no 0 200 6027 Valve screw M...

Page 169: ...e Mat no 0 236 0141 2 x valve springs Mat no 0 236 0143 Head seal Mat no 0 236 0142 Muffler Mat no 0 226 2236 System air filter Ls4 Open and clean filter Exchange filter insert Replace internal O ring Replace O ring connecti ons Filter Mat no 0 220 7917 O ring Mat no 0 200 6108 2 x O rings Mat no 0 200 6016 Solenoid valve 230 Volt Y 28 Open and clean solenoid valve Clean vent Exchange vent filter ...

Page 170: ...verpressure membrane Mat no 0 210 1891 Membrane Mat no 0 210 1961 O ring Mat no 0 236 0105 O ring Mat no 0 200 6026 Pressure spring Mat no 0 201 8264 Solenoid valves 24 V Check function Solenoid valve Mat no 1 000 4527 Pressure gauge Check function Pressure gauge 2 5 bar Mat no 0 220 0863 Pressure gauge 4 bar Mat no 0 220 0877 Pressure switch Check function Pressure switch up to SN 1000899 Mat no ...

Page 171: ...irror pilot input Mat no 1 000 7716 2 x O rings Mat no 0 236 2391 Mirror pilot input Visually check all end sur faces and clean if ne cessary according to spe cifications Input block Visually check all lenses and clean if necessary ac cording to specifications A input block gauged Er YAG crystal Visually check window surfaces and fibre end sur faces Check output ener gy and feedback A input block ...

Page 172: ...ing Mat no 0 200 6013 Replace O ring on stopper O ring Mat no 0 200 6120 Check spray pattern of in strument and make sure it is airtight ATTENTION Also in wards towards the optical system Optical system Replace O ring on exit window O ring Mat no 0 200 6120 Check exit window Assembled window Mat no 1 000 4847 Perform a visual inpsecti on of the deflection mirror and if necessary clean according to...

Page 173: ...038 Replace O ring for water inlet O ring Mat no 0 200 6174 Replace O ring on plug O ring Mat no 0 200 6120 Check seal of instrument NOTE Also inside facing the lens system Lens system Visually check deflection mirror and lenses and clean if necessary accor ding to specifications Deflection mirror P moun ted Mat no 1 000 6266 Lens adjusted Mat no 1 001 0848 Check all available fibres and light wed...

Page 174: ...ring Mat no 0 200 6120 Visually check all lenses and clean if necessary ac cording to specifications Lens adjusted Mat no 1 001 0848 Check all available fibre plugs for where he and the damage and exchange if necessary Fibre plug 50 10 Mat no 0 574 0531 Fibre plug 30 28 Mat no 0 574 0501 Fibre plug 40 28 Mat no 0 574 0511 Fibre plug 50 28 Mat no 0 574 0521 Check silicon hose on all fibre plugs for...

Page 175: ...nt with the laser safety supervisor CAUTION Check the country specific safety equipment accor ding to the appropriate na tional regulations Internal Check emergency off switch Emergency off switch Mat no 1 000 4626 Emergency off switch Mat no 1 000 4626 Switch element Mat no 1 000 7706 Check key operated switch Key operated switch Mat no 1 000 4625 Switch element Mat no 1 000 7705 Check oscillatio...

Page 176: ...nance work on KEY Laser 1243 3 9 Control unit 3 9 Control unit Component Work to be performed Replacement interval Parts to be replaced if ne cessary Update software Allow for the most recent service update of the KEY Laser 1243 software versi on 174 176 ...

Page 177: ...anical system Component Jobs to be done Exchange interval Parts to replace as needed Check ease of movement of the swing arm Check ease of movement of the four rollers Roller Mat no 1 000 1057 Check ease of movement and wear of the spray sup ply flap Check fastenings of the cl adding Check handpiece holder 175 176 ...

Page 178: ...s according to in stallation instructions Identify flash lamp wear as follows If the control va lues need to be increased by more than 20 in the energy adjustment ex change the flash lamp Compare the control ta bles of the first and present energy adjustments A prerequisite is that no re placement part influencing the output energy was ex changed between the first and present energy adjust ment Fl...

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