Venex LLC 3M

Product Detail-:

Suitable for all three phase DOL starter,

Auto manual function,

6 SS level sensor,

1 year warranty,

Potential free contact.

Over Head Tank indicator

Under Ground Tank indicator

NV Coil Series

Across Start Push Button

Introducing the VENEX LLC 3M – Three Phase Automatic Water Level Controller, specially designed for automatic water management and motor protection in Three Phase DOL Starters and Star-Delta Starter Panels.

This fully automatic controller can be easily installed in any 3 Phase motor starter panel and provides reliable operation for overhead and underground water tank management.

Main Features

Fully Automatic Water Level Control

Auto / Manual Operation Mode

Dry Run Protection

Overflow Protection

Easy Installation

Reliable Industrial Performance

Indications Available on Device

The controller comes with LED indications for:

Overhead Tank Water Level

Underground Tank Water Level

Motor ON Status

Power Supply ON Status

Sensor Details

The device comes with:

3 SS Sensors for Overhead Tank

3 SS Sensors for Underground Tank

Total 6 Stainless Steel Sensors included.

Sensor Installation Details

Overhead Tank Connections

OH → High Level Sensor (Top of Tank)

OL → Low Level Sensor (Middle of Tank)

C → Common Sensor (Bottom of Tank)

Underground Tank Connections

UH → High Level Sensor (Top Level)

UL → Low Level Sensor (Middle Level)

C → Common Sensor (Bottom Level)

Working Function

When the overhead tank becomes empty, the controller automatically starts the motor — but only if water is available in the underground tank.

If there is no water in the underground tank, the controller will not allow the motor to start, protecting the motor from dry run and damage.

Once the overhead tank gets full, the controller automatically stops the motor to prevent water overflow.

Electrical Specifications

Suitable for 415V AC Three Phase Supply

Requires any 2 Phase supply for controller operation

Output available for:

Contactor NO Coil Connection

Across Start Push Button Connection

Compatible with:

Three Phase DOL Starter Panels

Star Delta Starter Panels

Industrial Water Pump Panels

Applications

Borewell Pump Systems

Industrial Water Control Panels

Commercial Water Tank Automation

Agricultural Pump Automation

The VENEX LLC 3M is a most reliable and easy-to-install automatic water level controller for three phase motor applications.

Manufactured by VENEX Electricals.

Note for Installation Without Underground Tank

If there is no Underground Tank and only a borewell with a single Overhead Tank is being used, then the Underground Tank sensors are not required.

In this condition, make a short link connection between:

UL

UH

Common (C)

All three terminals should be linked together using a wire jumper.

This bypass connection allows the controller to operate only with the Overhead Tank system and disables the Underground Tank sensing function.

With this setup:

The controller will work with only one overhead tank.

The motor will automatically start and stop according to the overhead tank water level.

Underground tank monitoring will remain inactive.