Danfoss LLS 4000 Liquid Level Switch Installation Guide

: June 4, 2024
: Danfoss

Table of Contents

Installation
LLS Bluetooth app download
Configuration
General warnings/precautions
Documents / Resources

Danfoss LLS 4000 Liquid Level Switch

Installation

LLS Bluetooth app download

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

Calibration (To be performed after replacement of Electronic part and always with LLS sensor head in calibration gas)

Read and apply safety instructions contained in product documentation
Direct current.

General warnings/precautions

Instructions in this document should only be used for electronic part replacement. For device installation refer to Installation guide/Quickstart document.
LLS 4000/U electronic part replacement is not allowed on SIL device version.
LLS 4000/U electronic part should only be used as spare part of LLS4000/U liquid level switch.
Every use that is not described in this guide is considered incorrect and is not authorized by the manufacturer.
If any changes regarding installation, media or operating conditions of the device have been done then refer to
Installation guide/Quickstart document and verify respect of specified values.
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 (Installation guide, Data sheet, etc.) scan this QR code:

Danfoss A/S, 6430 Nordborg, Denmark
www.danfoss.com

Documents / Resources

| Danfoss LLS 4000 Liquid Level Switch [pdf] Installation Guide
LLS 4000, LLS 4000U, Liquid Level Switch, Level Switch, Liquid Level, LLS 4000, Switch
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| Danfoss LLS 4000 Liquid Level Switch [pdf] Instruction Manual
LLS 4000 Liquid Level Switch, LLS 4000, Liquid Level Switch, Level Switch
| Danfoss LLS 4000 Liquid Level Switch [pdf] User Guide
4000, LLS 4000U, LLS 4000, LLS 4000 Liquid Level Switch, Liquid Level Switch, Level Switch, Switch
| Danfoss LLS 4000 Liquid Level Switch [pdf] Installation Guide
LLS 4000 Liquid Level Switch, LLS 4000, Liquid Level Switch, Level Switch, Switch
| Danfoss LLS 4000 Liquid Level Switch [pdf] Installation Guide
LLS 4000 Liquid Level Switch, LLS 4000, Liquid Level Switch, Level Switch, Switch
| Danfoss LLS 4000 Liquid Level Switch [pdf] User Guide
LLS 4000 Liquid Level Switch, LLS 4000, Liquid Level Switch, Level Switch, Switch