Danfoss LLS 4000U Liquid Level Switch Installation Guide

Danfoss LLS 4000U Liquid Level Switch

Warning! This is a Class A device. This device may cause radio interference in residential areas.In case of interference, the operator may be required to take appropriate measures. This instrument has to be mounted on a metallic tank. The device is intended to be used in industrial areas.

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Always leave the complete sensor assembled, during both electrical and mechanical installation. Only disassembly electronic and mechanical part, if necessary at service. Torque (LLS 4000 only): 10 Nm/7.4 lb ft pre-tightening + 45 degrees clockwise rotation

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General specifications

This telecommunication equipment conforms to the technical standards or requirements of NBTC.

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LLS Bluetooth app download

Observe!
Always download or update to latest App version. Devices with Firmware PV01 (see product label) must beFirmware updated to latest firmware before configuration. Please contact Danfoss.

Configuration

• In Service menu a unique password for Service menu can be entered.
  Go to menu upper right -> Go login -> Go to settings ->
  Go to Service Password -> Enter new Service Password

Note:
For commissioning, service and proof testing see LLS 4000/4000U Safety Manual

General warnings/precautions

• Every use that is not described in this guide is considered incorrect and is not authorized by the manufacturer.
• The LLS device should only be used with approved media listed under General specifications. Use with other medias must be validated by Danfoss before installation.
• Verify that the installation and operating conditions of the device respects those specified in this guide, especially concerning the supply voltage and environmental conditions.
• All service and maintenance operations must be performed by qualified personnel.
• Installation must comply with local standards and legislation.
• Before carrying out any maintenance operations on the device, disconnect the device from the main power supply.
• Before unscrewing the LLS device from the pipe or tank ensure that pipe or tank is empty and not under pressure.
• Liability for injury or damage caused by incorrect use of the device lies solely with the user.
• Depending on the application, the metallic part of the instrument may be hot or cold.
• If media detection or non-detection by the level switch could generate a hazard the SIL version and specific instructions described in the safety manual (periodic proof test) should be used. The SIL safety manual can be downloaded from Danfoss web site or by scanning the QR code below.

For further documents (Data sheet, SIL2 safety manual etc.) scan this QR code:

References

• Anatel — Agência Nacional de Telecomunicações
• Engineering Tomorrow | Danfoss

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