Danfoss LLS 4000 User manual

Installation guide/Electronic part replacement (non-SIL devices only)
Liquid Level Switch
Type LLS 4000 / LLS 4000U
148R9652
148R9652
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M12 male Electrical
connector
Heat sink (do not cover)
Mechanical part Electronic part
Hexagon 32 mm
Liquid sensing part
Process connection
G ¾” or ¾” NPT
Fig. 1
Fig. 2
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.
O-ring
Cover disassembled LLS
to avoid any access of
particles, moisture or
dirt

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Fig. 5 Fig. 4
Fig. 3
If any damage to the O-ring
replace it carefully by use of
appropriate O-ring tooling
Hand-tighten clockwise until O-ring is
compressed and mechanical stop is reached
(max torque 5 Nm/3.7 lb ft)
Hand-tighten
clockwise

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Fig. 6
Red light LED
Yellow light LED
Green light LED
Level LLS 4000/4000U
NO mode*
LLS 4000/4000U
NC mode*
Voltage
connected Level detection LLS 4000/4000U Fault
Green LED Yellow LED Red LED
High Level
sensor
High Level
sensor
Low Level
sensor
Low Level
sensor
Voltage supply
outside
spec.
–
LLS 4000/4000U
fault** –***
Green LED ON Yellow LED ON Red LED ON
Green LED Flashing.
LLS 4000/4000U
connected to
Bluetooth device
* Configuration dependent. Non-SIL2 fully configurable. SIL2 fixed configuration and only applicable for High Level sensor
** For failure types please connect the device to the Bluetooth App, enter fault state mode, and read the failure type
*** Fault can be detected at any detected level, ie. 2 or all 3 lights on
SIL2 fixed
configuration

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Configuration
LLS Bluetooth app download
Pin code: 0000
1
2
3
download
Search Danfoss
4
LLS 4000
ABCDEFGHIJKL
LLS______
123
LLS______ _
4 5 6
Configurable
LLS 4000

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Password: 121314
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
Configuration continued
Calibration (To be performed after replacement of Electronic part and always with LLS sensor head in gas phase)
Calibration can only be done while
the LLS device is in gas
LLS 0 0 7
78
LLS 0 0 7
78
LLS 0 0 7
78

© Danfoss | DCS (ms) | 2020.036 | AN331327770735en-000101
For further documents (Installation guide, Data sheet, etc.) scan this QR code:
Danfoss A/S, 6430 Nordborg, Denmark
www.danfoss.com
Read and apply safety instructions contained in product documentation.
General warnings/precautions
- Instructions in this document should only be used for electronic part replacement. For device installation refer to
Installation guide/Quickstart document.
- LLS4000/U electronic part replacement is not allowed on SIL device version.
- LLS4000/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.
22
Direct current.