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Elma T820H - User Manual

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Elma GmbH & 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

Table of Contents

Questions and Answers

  • W
    wjosephAug 7, 2025
    Why does Elma Other have no ultrasound but heating is OK?
    • E
      ejacksonAug 7, 2025
      If there's no ultrasound but the heating is working, the issue could be with the interference filter coil or the timer. In such cases, consider replacing the component or the complete interference filter.
  • R
    Robert ThorntonAug 12, 2025
    What to do if Elma T820H Other has no ultrasound and no heating?
    • L
      Laura AcostaAug 13, 2025
      If there is no ultrasound and no heating, the issue might be a faulty printed board (BZW diode; transistors; diodes mains and HF). You can try replacing the component or the complete printed board. Alternatively, disconnect the heating cable and check the unit again with new fuses. If the short circuit doesn't occur again, the heating is faulty, and you should replace it.
  • O
    obakerAug 17, 2025
    What to do if Elma Other fuse is released, with no heating and no ultrasound?
    • J
      Joshua StevensAug 17, 2025
      If the fuse is released, and there's no heating or ultrasound, it indicates a short circuit in the heating system. Disconnect the heating cable and check the unit again using new fuses. If the short circuit does not occur again, it confirms that the heating is faulty. Replace the faulty heating.
  • C
    Christian HolderAug 22, 2025
    Why does Elma Other have no ultrasound or weak ultrasound, but heating is OK?
    • M
      Mr. Gregory GillAug 23, 2025
      If there is no ultrasound or weak ultrasound, but the heating is okay, the issue could be with the output transformer, the output capacitor (6.8nF), or scorching in the transducer system. You may need to replace the component or the complete printed board, or open and check the transducer system.
  • A
    Anthony MolinaAug 27, 2025
    What to do if Elma T820H has no ultrasound but heating is OK?
    • J
      Jeffrey BrownAug 27, 2025
      If there's no ultrasound but the heating is working, possible causes include a faulty printed board (BZW diode; transistors; diodes) or a short circuit in the heating. Disconnect the heating cable and check again. You might need to replace a component, the complete printed board, or the heating element.
  • C
    Christopher LewisSep 1, 2025
    What to do if Elma T820H has no heating but ultrasound is OK?
    • K
      Katherine HowardSep 1, 2025
      If there is no heating but the ultrasound is working, the issue could be a faulty heating switch. If that's the case, replace the component.

Summary

General

1.4 Important safety warnings

Critical safety precautions for operating and maintaining the unit.

Important operating instructions

Trouble shooting; List of malfunctions

6.1 T310(H)

Troubleshooting guide for T310(H) model malfunctions.

6.2 T420(H); LC20 H

Troubleshooting guide for T420(H) and LC20H model malfunctions.

6.3 T460 - T 700 H; LC 30 - LC 130 H

Troubleshooting for T460-T700H and LC30-LC130H models.

6.4 T780 - T1060 H

Troubleshooting guide for T780-T1060H model malfunctions.

How to open the unit

Faulty operating and switch elements

8.2 How to replace the timer

Detailed steps for replacing the unit's timer component.

8.3 How to replace the heating switch

Instructions for replacing the heating element switch.

8.4 How to replace the control thermostat T420 H-T1060 H

Procedure for replacing the control thermostat on specific models.

8.5 How to replace the overheating protection on T310;H

Steps for replacing the overheating protection on T310/H.

8.6 How to remove the overheating protection on LC 20 H - LC 130 H

Procedure for removing overheating protection on LC models.

How to replace the heating

Faulty PXE transducer disks

How to open the transducer system

Steps to access and inspect the transducer system.

How to assemble the transducer system

Procedure for reassembling the transducer system after repair.

How to replace the transducer tank

How to replace the ultrasonic generator

14.1 T310 - T420 H; LC20 H - LC30 H

Procedure for replacing the ultrasonic generator on specific models.

14.2 T460 - T470 H; LC60 H

Procedure for replacing the ultrasonic generator on specific models.

14.3 TS540 - T700 H; LC130 H

Procedure for replacing the ultrasonic generator on specific models.

How to replace components on the generator print

Adjustment of the generators

Putting into operation; Trial run

Elma T820H Specifications

General IconGeneral
TypeThermal Printer
Printing MethodDirect Thermal
Printing Resolution203 DPI
Paper Width80 mm
Paper Thickness0.06 - 0.08 mm
Weight1.5 kg
InterfaceUSB, Serial

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