Elma LC130H Service Manual Download Page 38

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Faulty operating and switch elements

SM/Transsonic_LC/1104/D

Overheating

protection since Feb.

2002

Illustration 8.6.1. Overheating protection (since Feb 2002) mounted
and connected

Illustration 8.6.2. Capillary probe clamped-in and secured with silicone
(since Feb 2002)
red dotted line: cut silicone here to remove the probe

Position of probe in

models since Feb.

2002

Summary of Contents for LC130H

Page 1: ...H Co KG Kolpingstr 1 7 D 78224 Singen Tel 49 0 7731 882 0 Fax 49 0 7731 266 info elma ultrasonic com Service Manual Transsonic Analog Transsonic LC Ultrasonic Cleaning Units y english y www elma ultrasonic com ...

Page 2: ......

Page 3: ... 1 T310 H 11 6 2 T420 H LC20H 13 6 3 T460 T 700H LC 30 LC 130H 15 6 4 T780 T1060H 17 6 5 Block diagram T310 T420H LC20H LC30H 19 6 6 Block diagram T460 T700H LC60H LC130H 20 6 7 Block diagram T780 T1060H 21 7 How to open the unit 22 8 Faulty operating and switch elements 24 8 1 How to remove or replace the turning knobs 24 8 2 How to replace the timer 25 8 3 How to replace the heating switch 27 8 ...

Page 4: ...0 T420H LC20H LC30H 74 15 2 T460 T470H LC60H 76 15 3 TS540 T700H LC130H 78 15 4 T780 T1060H 81 16 Adjustment of the generators 85 16 1 Set up of measuring instruments 86 16 2 Measuring process 86 16 3 Table of power consumption values ultrasound 89 16 4 Adjustment on T310 T420H LC20H LC30H 90 16 5 Adjustment on T460 T470H LC60H 94 16 6 Adjustment on TS540 T700H LC130H 97 16 7 Adjustment on T780 T1...

Page 5: ...ical support and contact address please see the last page 1 2 Contents of the Service Manual Carefully read and observe before you carry out any repair works Description of operating elements and unit features Instructions on the intended use and operation of the present unit Table of faults possible causes and remedies for the different unit types no guarantee on completeness Easy to follow instr...

Page 6: ...le mains connection data in particular those concerning the mains voltage and the current connected value Pull the mains plug before you open the unit In order to prevent damage from persons and equipment the open unit and all mains operated measuring instruments must be connected via mains interrupting transformer During operation parts of the ultrasonic generator and the transducer system carry ...

Page 7: ...ction 10 Faulty PXE transducer disks The wrong torque can cause malfunctions and a breakdown of the unit For checking the power consumption of the ultrasonic generator and the heating can be used for units with 1 phase N mains supply For the separation of the unit from the mains and for the safe and controlled upward adjustment of the mains voltage can be used for units with 1 phase N mains supply...

Page 8: ...te the unit Place the unit on a dry and solid surface ensure that the workplace is sufficiently ventilated Keep workplace unit housing and operating elements dry Protect the unit from entering humidity Fill the cleaning tank with a sufficient quantity of a suitable cleaning liquid before switch on Do not use flammable liquids directly in the cleaning tank risk of fire and explosion 100 120V 220 24...

Page 9: ...r part with regard to the cavitational erosion around the sound giving surfaces 3 2 Warranty period The limitation period for warranty claims is 2 years from the date of purchase If no proof of purchase can be produced Elma can find out the date of manufacturing by means of the serial number nameplate Elma grants a limitation period of 2 years on all exchange parts and on any repair works carried ...

Page 10: ...30 H Modelle T460 H T470 H T570 H T660 H T700 H T780 H T820 H T880 H T890 H TP1000 H T1040 H T1060 H T1200 H T1700 H 1 3 1 1 3 2 heating heating 1 2 2 4 heating 1 3 Datei c daten texte techdok bild001A DRW Timer for ultrasonic operation Operating modes 1 15 min for short period operation permanent operation manual switch off required Heating switch On Off switch for heating Pilot lamp ultrasound T...

Page 11: ...3 T460 T460H T470H 85 285 85 0 200 2 8 2 9 3 2 TS540 160 160 0 4 5 T570 T570H 160 360 160 360 0 200 3 8 3 9 T660H 360 160 200 4 8 TP690 TP690H TP695H 160 760 160 0 600 5 5 5 8 7 4 T700 T700H 160 560 160 0 400 6 7 6 9 T780 T780H 250 650 250 0 400 8 6 8 9 T820H 1050 250 800 10 2 T890 T890H 300 1100 300 0 800 12 2 12 7 T1040H 2000 400 1600 24 6 T1060H 2800 800 2000 38 5 LC20H 95 35 60 2 3 LC 30 LC 30...

Page 12: ...eck You can easily and safely check the unit for a short circuit by slowly adjusting the mains voltage upwards and observing the current consumption At the same time you can find out which functions of the unit have broken down If the unit does not indicate any current consumption although the operating elements are switched on or if the pilot lamp for the ultrasound is not turned on and the heati...

Page 13: ...erference filter No ultrasound weak ultrasound Heating OK OK OK output transformer output capacitor 6 8nF scorching in transducer system replace component replace complete printed board open check transducer system No ultrasound No heating OFF faulty faulty printed board BZW diode transistors diodes mains and HF replace component replace complete printed board disconnect heating cable check unit a...

Page 14: ...omatic building released No heating No ultrasound OFF faulty short circuit in heating disconnect heating cable check unit again new fuses if short circuit does not occur again the heating is faulty replace faulty heating No heating Ultrasound OK OFF OK faulty heating switch replace component No heating Ultrasound OK OK OK faulty thermostat button check with ohmmeter replace component ...

Page 15: ...ace component replace complete printed board open check transducer system No ultrasound Heating OK OFF OFF faulty faulty printed board BZW diode transistors diodes short circuit in heating disconnect heating cable check again replace component replace complete printed board replace heating No ultrasound Heating OK OFF OK OK interference filter coil timer replace component replace complete interfer...

Page 16: ...uses Remedy Fuse automatic building released No heating No ultrasound OFF OFF faulty short circuit in heating disconnect heating cable check unit again new fuses if short circuit does not occur again the heating is faulty replace faulty heating No heating Ultrasound OK OK OFF OK faulty heating switch replace component No heating Ultrasound OK OK OK OK faulty thermostat no click replace component ...

Page 17: ... No ultrasound weak ultrasound Heating OK OK OK OK OK printed board output transformer output capacitor scorching in transducer system replace component replace complete printed board open check transducer system No ultrasound Heating OK OK OK OK faulty printed board transistors in diodes replace compo nents replace complete printed board No ultrasound Heating OK OFF OK OK OK interference filter c...

Page 18: ...hort circuit in heating disconnect heating check again short circuit in inter ference filter replace heating No heating No ultrasound Fuse automatic building released OFF OFF faulty OK short circuit in heating short circuit in interferencef ilter e g liquid disconnect heting if faulty replace No heating Ultrasound OK OK OFF OK OK faulty heating switch perm interrupted replace component No heating ...

Page 19: ... outside No ultrasound weak ultrasound Heating OK OK OK OK OK secondary transformer coil output capacitor scorching in transducer system replace component replace compl printed board open check transd system No ultrasound Heating OK OK OK OK faulty printed board transistors diodes replace component replace compl printed board No ultrasound Heating OK OFF OK OK OK interference filter timer replace ...

Page 20: ...K short circuit in heating disconnect heating check again short circuit in interf filter replace heating No heating No ultrasound Fuse automatic in building released OFF OFF OK faulty OK short circuit in heating short circuit in interf filter e g liquid disconnect heating if faulty replace No heating Ultrasound OK OK OFF OK OK faulty heating switch perm interrupted replace component No heating Ult...

Page 21: ...Trouble shooting List of malfunctions Elma GmbH Co KG SM Transsonic_LC 1104 D 19 6 5 Block diagram T310 T420H LC20H LC30H Datei c daten texte techdok BLOCK01 DRW ...

Page 22: ...Trouble shooting List of malfunctions 20 SM Transsonic_LC 1104 D Elma GmbH Co KG 6 6 Block diagram T460 T700H LC60H LC130H Datei c daten texte techdok BLOCK02 DRW ...

Page 23: ...Trouble shooting List of malfunctions Elma GmbH Co KG SM Transsonic_LC 1104 D 21 6 7 Block diagram T780 T1060H Datei c daten texte techdok BLOCK03 DRW ...

Page 24: ...quiring the unit to be connected use a mains interrupting transfomer DANGER Proceed as follows How to remove the bottom plate 1 Place the unit onto the workplace upside down 2 Pull off the timer turning knob 3 Remove the recessed head screw Illustration 7 1 1 Illustration 7 1 1 Remove the recessed head screw under the turning knob Illustration 7 1 2 Timer angle with thread A for recessed head scre...

Page 25: ...plate complete with electronics can now easily be removed by slightly lifting the mains cable 4 Carefully take out the bottom plate and place it onto the unit upside down or separate it completely from the unit by cutting off the electric cables You can now check and replace most of the components without removing all connecting cables Follow the above steps in reverse order When closing the botto...

Page 26: ...000 5327 Turning knob thermostat T460H TP695H 200 000 5060 Turning knob thermostat T700H T1060H LC130H 200 000 5328 To replace a damaged turning knob or to remove the knob to allow replacement of a faulty operating element proceed as follows Pull the turning knob from the unit Plug the turning knob vertically onto the shaft of the operating element and carefully push onto the shaft Caution Do not ...

Page 27: ...200 000 5114 To replace the component the bottom plate must be opened Proceed as follows Cause of breakdown Elma Order No 1 Open the unit as described in section 7 How to proceed 2 Pull off the turning knob 3 Loosen the plug contacts of the four electric cables of the timer mark the plug connections 4 Cut the cover foil around the fastening screws 5 Loosen the two fastening screws on the front and...

Page 28: ...eration Datei c daten texte techdok BILD003 DRW 2 1 2A 1A COUPATAN C10 1 2 1 2 Typ 600 Diehl 1 2 1 2 1 2 1A 2A Netzeingang Entstörung Generator Netzeingang Entstörung Generator Signallampe Signallampe Haltewinkel Haltewinkel Zeitschaltuhr Zeitschaltuhr Halteschrauben Halteschrauben Signallampe Signallampe Bild 3 Zeitschaltuhr Zeitschaltuhr Illustration 8 2 2 top timer type DIEHL in units made befo...

Page 29: ...ly cables has no consequence on the functioning of the unit Cause of breakdown Elma Order No How to proceed Variant A 1 Open the unit as described in section 7 2 a The switch is unlighted Loosen the two electric connections at the heating switch contacts b The switch is lighted Loosen the three electric connections at the heating switch contacts 3 The heating switch is fastened to the front plate ...

Page 30: ...ed model Supply cable from interference filter Output to control thermostat Off On 1 2 3 Netzspannung von Entstörung Netzspannung zur Heizung Heizungsschalter alt Off On 1 2 Netzspannung von Entstörung Netzspannung zur Heizung Heizungsschalter neu 2000001418 2 1454 Illustration 8 3 2 left heating switch before March 2002 lighted right heating switch since March 2002 unlighted Without opening of th...

Page 31: ...tion 8 3 3 Levering the heating switch out of the front plate Use a suitable narrow tool to lever the switch out from the side Carefully pull the switch out of the housing Ensure that the cables do not come lose and remain inside the unit Illustration 8 3 4 Secure the cables A B Secure the cables against sliding back ...

Page 32: ...ed by this process increases the impression that the liquid is already boiling A breakdown of the control thermostat is very rare In case of a breakdown of the PTC heating the short circuit current can damage the component The same happens in case of a mechanical damage to the probe cable In this case the break over point of the component does not work anymore and there will be no clicking sound w...

Page 33: ...astening screws A Press the front plate back onto the housing 9 Press the capillary probe back into the clamp and secure with silicone 10 Reconnect the electric cable at the thermostat Illustration 8 7 1 polarization is irrelevant Before closing the housing check again that no cable has come loose or is pinched Illustration 8 7 1 Electric connections at control thermostat Supply cable from heating...

Page 34: ...C 1104 D Elma GmbH Co KG Illustration 8 7 2 Clamped in capillary probe secured with silicone red dotted line cut silicone here to remove the probe Illustration 8 7 3 Pull off the foil around the control thermostat Fastening screws for control thermostat A A ...

Page 35: ...also be caused by material fatigue due to the ultrasonic activity At room temperature the switch contacts are closed i e an ohm throughput can be measured 200 000 0452 To replace the component proceed as follows Cause of breakdown Measure the component Elma Order No 1 Open the unit as described in section 7 2 Cut the silicone fixation of the component with a knife 3 Loosen the electric contacts 4 ...

Page 36: ...C 1104 D Elma GmbH Co KG protection red dotted line cut silicone here to remove the overheating protection interference filter heating Illustration 8 5 2 Wiring of heating switch here lighted model For the unlighted heating switch connection 3 is irrelevant ...

Page 37: ... order to check of the contacts are permanently closed and do not open above the switch off temperature the unit must be connected to a wattmeter 200 000 1412 To replace the component proceed as follows Cause of breakdown Measure the component Elma Order No How to proceed 1 Open the unit as described in section 7 2 Remove the tank as described in section 11 3 Use a hot air fan to remove the glue f...

Page 38: ...ng protection since Feb 2002 Illustration 8 6 1 Overheating protection since Feb 2002 mounted and connected Illustration 8 6 2 Capillary probe clamped in and secured with silicone since Feb 2002 red dotted line cut silicone here to remove the probe Position of probe in models since Feb 2002 ...

Page 39: ...ng and switch elements Elma GmbH Co KG SM Transsonic_LC 1104 D 37 interference filter heating Illustration 8 6 3 Wiring of heating switch here lighted model For the unlighted heating switch connection 3 is irrelevant ...

Page 40: ...ith heating lever off the heating switch with a suitable tool see Illustration 8 7 2 3 Units with heating loosen the electric cables at the heating switch Secure the cables against sliding back into the housing see Illustration 8 7 3 4 Carefully pull off the foil see Illustration 8 7 2 5 Put on the new self adhesive foil 6 Mount the heating switch polarization of cables at heating switch with 2 co...

Page 41: ...ments Elma GmbH Co KG SM Transsonic_LC 1104 D 39 Lever out the heating switch Illustration 8 7 2 Levering the heating switch out of the housing Illustration 8 7 3 Secure the electric cables carefully remove the foil Pull off the foil ...

Page 42: ...rent breaker or the fuse automatic of the relevant socket is released The fuses on the interference filter if available are faulty As mentioned above the PTC heating element automatically limits the current consumption if the temperature is high In order to achieve an efficient heating up it is necessary to mix the cleaning liquid thoroughly during the heating period This can be done by stirring t...

Page 43: ...nt e g by connecting each heating element separately 3 Loosen the cables from the faulty heating element 4 Cut the silicone fixation which secures the heating element against displacement in the area between the heating profiles see Illustration 9 3 C and the heating rail see Illustration 9 3 B 5 Push the aluminum profile of the heating element horizontally out of the guiding rails e g with a larg...

Page 44: ... the new heating element into the guiding rails Carefully push it into the guiding rails without jamming Then secure against displacement with silicone Illustration 9 3 Removed tank with vertically mounted heating elements Red dotted lines Cut silicone fixation here to remove the heating elements Push the heating element s out of the guiding rails in the marked direction Push the heating element d...

Page 45: ...eating element Red dotted line Cut silicone fixation here to remove the heating element Push the heating element toward its connected side A out of the guiding rails The new heating element can be pushed in more easily if the edges of the aluminum profile are rounded off with a file Put the new heating element into the guiding rails in the marked direction B Carefully push it into the guiding rail...

Page 46: ...heating elements are wired in a line 2 heating elements are wired in a line The third element is connected parallel to the two other elements 2 elements each are wired in a line and connected parallel with the other element pairs 2 Heating elements 3 Heating elements 4 and more heating elements ...

Page 47: ...heating elements are wired in a line 2 heating elements are wired in a line The third element is connected parallel to the two other elements 2 elements each are wired in a line and connected parallel with the other element pairs 2 Heating elements 3 Heating elements 4 and more heating elements ...

Page 48: ... transducer systems would be a higher risk of breakdown and an increased cavitational erosion on one side of the tank This does not apply to units with a single transducer system Therefore all transducer disks should be replaced even if only individual PXE transducer disks are faulty Elma deliver preselected sets of transducer disks PXE transducer disks can be damaged for different reasons mostly ...

Page 49: ...ctricity on PXE disks The PXE transducer disk is charged with a high amount of electricity when opened or tightened This can be branched off by short circuiting between two terminal lugs e g with a screw driver For the same reason also short circuit the plug contacts of the electric cables of the transducer system The electric charge is also built up by a temperature change i g cooling of a PXE di...

Page 50: ... Put a drop of Loctite or similar onto the thread of the coupling piece to lock the screw 2 Assemble the individual parts of the transducer system exactly as shown in the illustration 3 Important The black markings must point to the PLUS terminal lug 4 Screw in the transducer system screw and fix it with the torque wrench Systems with 1 PXE disk at 46 Nm Systems with 1 PXE disk at 58 Nm Caution Th...

Page 51: ...9 Structure of transducer system with 1 PXE disk E 35 Illustration 10 1 2 Transducer system with 1 PXE transducer disk Illustration 10 1 3 Transducer system with 2 PXE transducer disks 35 kHz E A A B B C C D D E E F F Structure of transducer system with 2 PXE disks W 35 ...

Page 52: ...em with 2 PXE disks W 40 Illustration 10 1 4 Transducer system with 2 PXE transducer disks 40 kHz Pressure piece shape depending on frequency of the system Terminal lug MINUS connection PXE transducer disk Terminal lug PLUS connection Aluminum washer Aluminum coupling piece D C B F A E E A B C D E F ...

Page 53: ...ansducer system screw pressure piece Insulating duct terminal lug insulating di k Terminal lug PXE transducer disk aluminum washer coupling piece PXE transducer disk aluminum washer M8 M10 Illustration 10 1 5 left structure of 2 disk transducer system right structure of 1 disk transducer system ...

Page 54: ...ransducer tank is a wear part due to the cavitational erosion around the sound giving surfaces This process is increased by improper use aggressive cleaning media cleaning items put directly on the tank floor deposits and remains on the tank floor etc Illustration 11 1 Heavy cavitational erosion at the spot where the transducer system is fixed Illustration 11 2 Leaking tank floor with traces of li...

Page 55: ... replace the transducer tank proceed as follows Tank complete with transducer system Tank without transducer system Elma Order No How to proceed 1 Place the unit upside down on a solid workplace 2 Open the unit as described in section 7 3 Interrupt the electric supply to the transducer tank Mark all electric supply cables to the tank and loosen them The marking of the cables is important for the c...

Page 56: ...sure correct front and backside positioning 12 Let the sealing mass harden approx 12 h or according to the instructions of the manufacturer 13 On units with drain duct Mount the drain duct Wipe all duct threads with a wire brush to remove any sealing remains and clean with alcohol Seal the thread e g with Loctite 586 or Teflon tape see also section 12 14 Reconnect all electric cables Heat up silic...

Page 57: ...How to replace the transducer tank Elma GmbH Co KG SM Transsonic_LC 1104 D 55 Lever the housing from the tank Illustration 11 1 2 Carefully lever the housing from the tank at different spots ...

Page 58: ...d in section 7 2 Loosen the lock nut if available see Illustration 12 1 4 3 Heat the drain around the screw connection with a hot air fan to resolve the Loctite sealing Illustration 12 1 1 12 1 5 4 Use a suitable fork wrench to unscrew the drain duct Secure the drain duct with a pipe wrench to avoid an unintentional removal of the sealing in the duct angle Illustration 12 1 3 12 1 6 5 Remove any r...

Page 59: ...ration 12 1 1 3 8 drain duct Heat the Loctite thread sealing with a hot air fan Illustration 12 1 2 3 8 drain duct Open the ball valve with a 19 mm fork wrench anti clockwise Illustration 12 1 3 3 8 drain duct Secure the duct nipple A with a pipe wrench to avoid an opening of the sealing in the duct angle B A B ...

Page 60: ... 1 2 drain duct Illustration 12 1 4 Loosen the lock nut with a 32 mm fork wrench anti clockwise Illustration 12 1 5 Heat the Loctite thread sealing with a hot air fan Illustration 12 1 6 Secure the duct nipple A with a pipe wrench to avoid an opening of the sealing in the duct angle B A B ...

Page 61: ...ted the interference filter coil 13 1 Interference filter on T310 T420 LC20 and LC30 The interference filter is integrated on the generator pcb A breakdown of the fuse can be caused by a short circuit in the heating element or the final stage of the generator In order to find the cause we recommend to interrupt the cables of the heating and to test the unit again with new fuses Illustration 13 1 1...

Page 62: ... a short circuit in the heating element In order to find the cause we recommend to interrupt the cables of the heating and to test the unit again with new fuses Illustration 13 3 1 Mounted and connected interference filter Supply cables interference filter timer input Polarization irrelevant On units with heating the cable for the heating is connected to the twin contacts Supply cables timer outpu...

Page 63: ...terrupted in case of a short circuit If the fuses are blown there is usually a short circuit in the heating element In order to find the cause we recommend to interrupt the cables of the heating and to test the unit again with new fuses Illustration 13 3 1 Interference filter on units made before 2002 Illusration 13 3 2 Interference filter on units made since 2002 Interference filter on old units ...

Page 64: ...to the bottom plate Supply cables heating On units as shown in Illustration 13 3 2 connection K5 and K6 The lower contact is insulated because of its closeness to the bottom plate Mains supply phase brown On units as shown in Illustration 13 3 2 connection K2 Mains supply zero blue On units as shown in Illustration 13 3 2 connection K1 The lower contact is insulated because of its closeness to the...

Page 65: ...nt thermic overload of the semiconductors etc Certain indicators of a breakdown imply a fault in the transducer system such as faulty visibly deformed capacitors in the output circle dark or scorched coil of the output transformer heavy cavitational erosion in the tank The faulty generator print is a consequence of the primary fault which must also be detected and remedied Find the cause Pilot lam...

Page 66: ...ic cables 4 Mount the new generator print on the bottom plate On units T460 T700 Ensure that the transistors are mounted correctly Use new insulating sleeves delivered with transistors MJE 13009 and fix the transistors on the bottom plate Caution Check the insulating sleeves for damage Remove any dirt particles on the insulating disk The black insulating sleeve for the screw connection must point ...

Page 67: ...it is screwed 3 Mark and loosen the electric cables See also illustration on the next page 4 Mount the new generator 5 Adjust the generator as described in section 16 4 Wrong adjustment can destroy the generator and the transducer disks 6 Reconnect all other cables Caution Observe correct polarization 7 Reassemble the unit and ensure that all cables are connected correctly 8 Trial operation approx...

Page 68: ...Illustration 14 1 2 Generator print mounted onto bottom plate back view Supply cables generator timer input Polarization irrelevant Supply cables timer output generator Polarization irrelevant Mains supply phase brown Earthing cables Mains supply zero blue D E G F H I K D E F G H I K ...

Page 69: ...en the electric cables 4 Mount the new generator print Ensure that the transistors are mounted correctly Use new insulating sleeves delivered with transistors MJE 13009 and fix the transistors in the clamps on the bottom plate Caution There must not be any dirt particles between the transistors and the bottom plate cooling body The cooling surface of the transistors must lie evenly on the bottom p...

Page 70: ...r print T460 T470H LC60H Supply cables timer generator print Polarization irrelevant Plug contact 4 8 mm HF output to transducer system Plug contact 6 3 mm HF output to transducer system Earthing connection generator print earthing point bottom plate units made since 2000 Holding clamps for transistors Insulating sleeves for transistors A B C D E F A B C D E F ...

Page 71: ...sen the electric cables 4 Mount the new generator print Ensure that the transistors are mounted correctly Use new insulating sleeves delivered with transistors MJE 13009 and fix the transistors in the clamps on the bottom plate Caution There must not be any dirt particles between the transistors and the bottom plate cooling body The cooling surface of the transistors must lie evenly on the bottom ...

Page 72: ... print TS540 T700H LC130H Supply cables timer generator print Polarization irrelevant Plug contact 4 8 mm HF output to transducer system Plug contact 6 3 mm HF output to transducer system Earthing connection generator print earthing point bottom plate units made since 2000 Holding clamps for transistors Insulating sleeves for transistors A D E C F B A B C D E F ...

Page 73: ...upply cable to the transducer system is connected correctly Plug the cable with the yellow sleeve mass onto the point on the bottom plate see Illustration 14 4 1 Connect the other cable HF to the generator T780H T820H to the lower plug contact see Illustration 14 4 2 C T1040H T1060H to one of the contacts in the centre see Illustration 14 4 2 F 4 Mount the new generator print 5 Adjust the generato...

Page 74: ...ly cable to fan 2 plug contacts 2 8 mm HF supply to transducer system Mass supply to transducer system Earthing connection generator print earthing point on bottom plate Illustration 14 4 2 Detailed view HF output HF output plug ocntact 6 3 mm Earthing point plug contacts 6 3 mm Mass connection generator earthing point D HF output supply transducer system A B C E D F G D C A B C D E HF output T780...

Page 75: ...nssonic_LC 1104 D 73 Additional capacitor T1040H T1060H Illustration 14 4 2 Additional capacitor HF output supply additional capacitor Output additional capacitor bridged with G HF output supply transducer system bridged with F Additonal capacitor C G F H C F G H ...

Page 76: ...ction 16 4 There can be a short circuit in mains diode BZW 06 due to extreme voltage peaks or a mains overvoltage fuse and BZW diode faulty In this case no other components are faulty 200 000 0353 The diodes BA 159 or 1N4007 can be faulty due to a short circuit of the transistors BA 159 200 000 6123 1N 4007 200 000 5001 The capacitor in the output circle 2kV can be destroyed due to a fault in the ...

Page 77: ...nerator print is intact if the fault is limited to the output transducer Check the transducer system the transducer disks might be torn The oscilloscope can detect this fault by measuring the collector current same measuring points as for adjustment see section 16 4 The graph remains flat see section 16 2 4 T310 115V 230V LC20H 230V 200 000 1458 LC 20H 115V 200 000 1564 Illustration 15 1 1 Generat...

Page 78: ...and remove the transistors 4 Check the diodes for short circuits replace if necessary 5 Check the resistances 100 Ohm and 1 2 Ohm for throughline replace if necessary 6 Solder in new transistors 7 Mount the generator back onto the bottom plate 8 Fasten the transistors to the clamps on the bottom plate Caution Use new insulating sleeves for the transistors The transistors must lie evenly on the bot...

Page 79: ...n the transducer system or through wrong operation cleaning items directly on the tank floor The fuse on the generator print is intact if the fault is limited to the output transducer Check the transducer system the transducer disks might be torn The oscilloscope can detect this fault by measuring the collector current same measuring points as for adjustment see section 16 4 The graph remains flat...

Page 80: ...move the generator print from the bottom plate 3 Unsolder and remove the transistors 4 Check the diodes for short circuits replace if necessary 5 Check the resistances 100 Ohm and 1 2 Ohm for throughline replace if necessary 6 Solder in new transistors 7 Mount the generator back onto the bottom plate 8 Fasten the transistors to the clamps on the bottom plate Caution Use new insulating sleeves for ...

Page 81: ... same measuring points as for adjustment see section 16 5 The graph remains flat see section 16 2 Illustration 16 2 4 Capacitor Elma Order No Output transformer 1 Open the screw connection of the output transformer How to proceed 2 Cut the silicone fixation of the coil with the core 3 Remove the upper U ferrite core with its support 4 Unsolder the secondary coil coil to the output side 5 Replace t...

Page 82: ...r print 80 SM Transsonic_LC 1104 D Elma GmbH Co KG Illustration 15 3 1 Generator print with relevant components Transistors Mains rectifyer diodes 1N4007 4 pieces Varistor Output transformer secondary coil Output capacitors A C D E B A B C D E ...

Page 83: ...fuse on the generator print is blown check the transducers 200 000 5062 Transistors Elma Order No 1 Unscrew the transistors How to proceed 2 Unsolder and degrease the transistors 3 Check the diodes BA159 for short circuits replace both if necessary 4 Check resistances 100 Ohm and 0 47 Ohm for throughline replace if necessary 5 Screw in the new transistors Caution Check the insulating disk A for da...

Page 84: ...oxidize the brass rings and contacts with a knife or a glass fiber brush scratch them clean and solder the contacts new Correct functioning can be checked by means of an insulated bar which is carefully levered between the cooling body and the generator print Illustration 15 4 2 Position of transistor contacts There can occur a short circuit in the varistor due to extreme peak voltages or to a mai...

Page 85: ...t this fault by measuring the collector current same measuring points as for adjustment see section 16 7 The graph remains flat see section 16 2 Illustration 16 2 4 Resistances Elma Order No Capacitor Elma Order No Output transformer 1 Open the screw connection of the output transformer How to proceed 2 Cut the silicone fixation of the coil with the core 3 Remove the upper U ferrite core with its ...

Page 86: ...ma GmbH Co KG Secondary coil 102 wraps T1040H T1060H 200 000 7112 Illustration 15 4 3 Generator print with relevant components Transistors HF diodes BA 159 or DSEI8 06A on T1040 T1060 115V Varistor Output transformer secondary coil Output capacitor 4 pieces D B A B C E A B C D E ...

Page 87: ...ransformer For further description of the measuring tools see section 1 5 Carefully read and observe the following safety warnings before you start the adjustment of the generator Risk of electrocution Live parts inside the unit Even in the switched off unit there are several components charged with electricity In order to prevent damage on persons and equipment the mains driven measuring instrume...

Page 88: ...on 16 1 1 Schematic set up of measuring instruments CH channel 1 for the measurement of the voltage signal clock signal at transistor base voltage 10V DIV if a probe 1 10 is used CH channel 2 for the measurement of the current graph emitter output signal voltage 0 1 V DIV if a probe 1 1 is used TIME basic 5 µs Trigger CH1 Trigger HF 16 2 Measuring process Prepare the measuring set up with connecte...

Page 89: ... see section 15 4 15 7 The measured graphs must be exactly in phase see Illustration 16 2 1 Exception T780 T1060H MP1 CH1 MP2 CH2 T1 MP1 CH1 MP2 CH2 T1 Spannung Strom Spannung Strom MP1 CH1 MP2 CH2 T1 Spannung Strom Bild 13 13a 13b 13c Peak Datei c daten texte techdok BILD013 DRW Illustrations 16 2 1 16 2 3 If the graphs do not correspond there is a high output loss in the electronics The transist...

Page 90: ...stment e fault inside the unit e g output transformer coil short circuit scorching etc or transducer system PXE disks torn scorching etc check components in case of a short circuit in the output transformer or the transducer system the current graph can look as indicated in Illustration 16 2 4 f ferrite core in output transformer adjusted wrong power too high reduce the air gap by slowly turning o...

Page 91: ...asound Type of unit Power consumption ultrasound watt T310 H 25 35 T420 H 30 40 T460 H 75 95 T470 H 75 95 TS540 140 150 T570 H 140 150 T660 H 140 150 TP690 TP695H 140 150 T700 H 140 150 T780 H 225 275 T820 H 225 275 T890 H 250 300 T1040 H 400 450 T1060 H 800 900 LC20 H 30 40 LC30 H 30 40 LC60 H 70 85 LC130 H 140 150 ...

Page 92: ...llustration 16 4 3 Slowly increase voltage observe the oscilloscope and the current consumption during the process 4 Check the graph and compare with possible graphs as indicated in Illustrations 16 2 1 3 If graph and phase are as indicated in Illustration 16 2 1 no modification is necessary a If the current graph rises before T1 as shown in Illustration 16 2 2 Reduce the number of wraps of the a ...

Page 93: ...collector signal connection of probe to cooling body Probe channel 2 measuring of the emitter signal connection of probe at resistance R5 on the transistor side Mass connection of probe channel 2 resistance R5 Control coil to carry out the adjustment Adding or reducing of coil wraps Cable for adjustment Unsolder from fix point on generator print and wrap or unwrap control coil Ferrite core of outp...

Page 94: ...stment of the generators 92 SM Transsonic_LC 1104 D Elma GmbH Co KG Cable for adjustment Illustration 16 4 2 Unsolder the cable of control coil for adjustment and add or reduce number of wraps at the coil E ...

Page 95: ...2 Gnd MP1 CH1 MP2 CH2 Gnd Netz von Uhr Netz von Uhr to timer Entstör drossel Entstör drossel Steuer spule Steuer spule Ausgangs übertrager Ausgangs übertrager Zuleitung Schwinger Zuleitung Schwinger Output transformer to timer Tuning coil Tuning coil to transducer Output transformer to transducer Illustration 16 4 3 top units made before February 1992 bottom units made since February 1992 ...

Page 96: ...ck the graph and compare with possible graphs as indicated in Illustrations 16 2 1 3 If graph and phase are as indicated in Illustration 16 2 1 no modification is necessary 5 If there is a deviation of the graph as compared to Illustration 16 2 1 turn the ferrite core at the adjustment coil Observe the change of the phase position indicated at the oscilloscope 6 Check the generator power consumpti...

Page 97: ...de MP2 Mass connection of probe channel 2 resistance R6 Gnd Adjustment coil for adjustment turn ferrite core in or out according to adjustment instructions Ferrite core of output transformer If output too high compare Table 14 3 slightly turn ferrite core out counter clockwise If output too low compare Table 14 3 slightly turn ferrite core in clockwise Caution The tip of the screw driver can heat ...

Page 98: ...nger Au ü sgangs bertrager Steuer spule Entstör drossel MP1 CH1 MP2 CH2 GND von Uhr zur Uhr von Netz Entstör drossel T460 H T470 H LC60 H ab Februar 1992 T420 bis Januar 1992 T460 H T470 H bis Febraur 1992 Datei c daten texte techdok BILD010 DRW to mains to timer Interference filter Output transformer to transducer Interference filter to mains to timer to heating to timer Illustration 16 5 3 top u...

Page 99: ...are with possible graphs as indicated in Illustrations 16 2 1 3 If graph and phase are as indicated in Illustration 16 2 1 no modification is necessary 5 If there is a deviation of the graph as compared to Illustration 16 2 1 turn the ferrite core at the adjustmen coil Observe the change of the phase position indicated at the oscilloscope 6 Check the generator power consumption and compare with th...

Page 100: ...asurement of collector signal connection of probe at soldering fix point or bridge MP1 Probe channel 2 measurement of emitter signal connection of probe at resistance R6 on transistor side MP2 Mass connection of probe channel 2 resistance R6 Gnd Adjustment coil to carry out adjustment turn ferrite core in or out according to instructions A B D C A B C D ...

Page 101: ...660 H TP690 T700 H bis 1992 gsspule Steuerspule Län Abstimm ule Zuleitung Schwinger sp von Uhr MP1 CH1 MP2 CH2 GND to transducer Transformer Tuning coil Au üb sgangs ertrager Datei c daten texte techdok BILD011 DRW Output transformer to timer to heating to mains to timer Interference filter Output transforme r Interference filter to mains to timer to transducer to heating Tuning coil to timer Illu...

Page 102: ...graph and phase are as indicated in Illustration 16 2 1 no modification is necessary 5 If there is a deviation of the graph as compared to Illustration 16 2 1 turn the ferrite core at the adjustment coil Observe the change of the phase position indicated at the oscilloscope The voltage graph should show a peak of approx 2 mm width before the decline Illustration 16 2 2 6 Check the generator power ...

Page 103: ...ing point Caution do not connect to transistor connection faulty measuring result Mass connection probe channel 2 connection of probe at left measuring point Caution do not connect to transistor connection faulty measuring result Adjustment coil for carrying out adjustment turn ferrite core out or in according to instructions Illustration 16 7 2 Adjustment coil latest model Older units can be equi...

Page 104: ... übertrager Steuer spule n Uhr vo MP1 CH1 MP2 CH2 Gnd Bild 12 Datei c daten texte techdok BILD012 DRW T780 H T820 H T890 H TP1000 H T1040 H T1060 H 2x T1200 H T1700 H Abstimm spule to timer Output transformer Illustration 16 7 3 Model with and without additional capacitors to transducer Tuning coil only 40kHz models T1040 H T1060H ...

Page 105: ...ns connection 17 1 How to fill cleaning liquid Fill the cleaning tank of the unit with a sufficient quantity of liquid before switch on Observe filling level Dry running of the transducer tank can damage the unit Ensure that the cleaning tank is correctly filled during operation mark on the tank wall NOTE Make sure that the selected cleaning chemical is perfectly suitable for the use in an ultraso...

Page 106: ... be removed from the cleaning items or the cleaning liquid The same applies to solvents containing NaCl solutions NOTE The stainless steel tank can be damaged by crevice corrosion within a short period These substances can be contained in household cleaners If in doubt please contact your distributor or the manufacturer 17 3 How to heat up the cleaning liquid Depending on the kind of contamination...

Page 107: ...uring range Compare the measured values with the values given in the table in section 15 3 For this test the heating remains switched off There is a simple method to check the ultrasonic effect in the cleaning liquid cavitational check with an aluminum sheet Cut a piece of the size and shape of the transducer tank from a roll of a standard aluminum foil Put this sheet vertically into the liquid fo...

Page 108: ...sit our homepage Your will find helpful information on our large product range www elma ultrasonic com Do you have any queries or suggestions concerning the present unit its use or the Service Manual Please let us know We will be glad to assist Technical Support Phone 49 0 7731 882 280 Fax 49 0 7731 882 253 E mail support elma ultrasonic com 20 Conclusion If you have problems in finding or repairi...

Page 109: ...ircuit diagram you may require 21 2 Annex B Spare parts lists Please contact the manufacturer for any spare parts list you may require Spare parts can be ordered from Elma or from your supplier Please make sure to indicate the type of unit and the serial number nameplate Subject to optical and technical modifications_ Elma_ch_1104 ...

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Summary of Contents for LC130H

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Elma LC130H, Service Manual, Page: 38 / 109

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Summary of Contents for LC130H

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