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Lenze 12.420 - User Manual

Lenze 12.420
32 pages
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BA 12.0028−EN
.=A.
Ä.=A.ä
Operating Instructions
Gearbox
Type 12.LLL / 52.LLL

Questions and Answers

  • T
    Terrence ShawAug 10, 2025
    Why is my Lenze Engine experiencing excessive temperature?
    • S
      Suzanne PowellAug 10, 2025
      If your Lenze Engine is overheating, it could be due to several reasons. First, check for an overload and reduce the load, ensuring the drive and machine combination is correct. Second, ensure sufficient heat dissipation by improving the cooling air supply and cleaning the gearbox/motor. Lastly, verify the lubricant level and refill as specified.
  • M
    Matthew HernandezAug 16, 2025
    What to do if Lenze 12.420 drive is at a standstill?
    • Y
      ymcfarlandAug 17, 2025
      If your Lenze Engine drive is at a standstill, there are a few potential causes. First, check the connection to ensure the voltage supply hasn't been interrupted. Second, verify that the electrical connection is correct and that the nameplate matches the voltage supply. Finally, check for excessive load and reduce it, ensuring the drive and machine combination is appropriate.
  • T
    Timothy GonzalezAug 25, 2025
    Why does my Lenze 12.420 Engine make unusual noise?
    • B
      brenda07Aug 25, 2025
      Unusual noises from your Lenze Engine can stem from a couple of issues. One potential cause is an overload, in which case you should reduce the load and check the drive/machine combination. Another possibility is damage within the gearbox or motor, which requires contacting Lenze Service.
  • A
    Adam HinesSep 1, 2025
    What to do if Lenze 12.420 Engine motor is running, but gearbox is at standstill?
    • W
      woodtamaraSep 1, 2025
      If the motor of your Lenze Engine is running but the gearbox is at a standstill, it could be because the fixing elements are missing or defective, so check the attachment. Alternatively, the gearbox itself might be defective, in which case you should contact Lenze Service.

Summary

Preface and general information

Safety instructions

Personnel responsible for safety

Defines operator and skilled personnel roles and responsibilities for safety.

General safety information

Provides general safety advice, warnings about hazards, and proper operation guidelines.

Mechanical installation

Mounting

Covers general mounting principles and specific procedures for drive systems.

Commissioning and operation

Before switching on

Lists checks to perform before commissioning the drive system.

During operation

Details periodic checks and actions to take during drive system operation.

Maintenance

Lenze 12.420 Specifications

General IconGeneral
BrandLenze
Model12.420
CategoryEngine
LanguageEnglish

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