eletechsup LC35D01 Automatic Water Level Controller and LCCAB01 Probe User Manual

1. Introduction

The eletechsup LC35D01 Automatic Water Level Controller is designed to manage water pump operations automatically based on detected water levels. When paired with the LCCAB01 304 Stainless Steel Probes, it provides a reliable solution for maintaining desired water levels in various applications such as water towers, dams, swimming pools, and household water supply systems. This manual provides essential information for the safe and effective installation, operation, and maintenance of your device.

2. Safety Information

Please read and understand all safety instructions before installation and operation. Failure to follow these instructions may result in electric shock, fire, or damage to the product.

Electrical Hazard: Installation and wiring should only be performed by qualified personnel. Ensure the power supply is disconnected before any installation or maintenance work.
Voltage Compatibility: Verify that the controller's voltage version (12V, 24V, or 220V) matches your power supply. Connecting to an incorrect voltage can cause severe damage.
Load Capacity: Do not exceed the maximum load capacity of 30A for the controller. Overloading can lead to overheating and failure.
Environmental Conditions: Operate the device within the specified environmental temperature range (-20 ℃ to +45 ℃) and altitude (≤2000 meters).
Probe Handling: Handle probes carefully. Ensure proper insulation and avoid damaging the wires.

3. Package Contents

The package typically includes the following components:

LC35D01 Automatic Water Level Controller (12V, 24V, or AC 85-265V version)
LCCAB01 304 Stainless Steel Probes (quantity and length may vary, e.g., 3 probes of 10M length)

Note: The LCCAB01 water level sensor probes may be purchased separately depending on the product variant.

4. Product Overview

4.1 LC35D01 Controller

The LC35D01 controller is the central unit for managing water levels. It features screw terminals for power input, probe connections, and pump output. The unit is housed in an ABS shell for durability and designed for screw hole installation.

eletechsup LC35D01 Water Level Controller with three connected probes

Image: LC35D01 Controller with connected yellow, green, and blue probes, showing input/output terminals and power indicator lights.

4.2 LCCAB01 Probes

The LCCAB01 probes are made from waterproof 304 stainless steel, designed for reliable water level detection. Each probe is connected via a high-quality silicone wire, resistant to extreme temperatures.

Three LCCAB01 stainless steel probes with yellow, green, and blue wires

Image: Three LCCAB01 stainless steel probes with yellow, green, and blue silicone wires, illustrating their construction and dimensions.

5. Specifications

5.1 LC35D01 Automatic Water Level Controller

Power Supply Voltage: DC12V / DC24V / AC85-265V (220V Version)
Standby Current: 11mA (12V)
Working Current: 80mA (12V)
Shell Material: ABS
Environmental Temperature: -20 ℃ ~ +45 ℃
Work Altitude: ≤2000 meters
Installation Method: Screw hole installation
Size: 80mm x 50mm x 31mm
Weight: 86 grams
Maximum Load: 30A / 250VAC, 30A / 120VAC, 30A / 30VDC

5.2 LCCAB01 304 Stainless Steel Level Probe

Probe Material: Waterproof 304 stainless steel
Probe Size: Diameter 8mm, Length 40mm
Wire Conductor Material: Oxygen-free copper wire
Wire Conductor Diameter: 0.5 square (20AWG)
Wire Insulation Material: High and low temperature resistant silicone
Wire Temperature Resistance: -60 ℃ ~ 200 ℃
Wire Color: Yellow, Green, Blue
Wire Length Options: 2 meters, 5 meters, 10 meters
Weight (3PCS): 85g (2M), 145g (5M), 248g (10M)

6. Installation and Setup

Proper installation is crucial for the reliable operation of the water level controller. Ensure all power is disconnected before proceeding.

6.1 Controller Mounting

Mount the LC35D01 controller in a dry, protected location using the screw holes provided.
Ensure adequate ventilation around the controller.

6.2 Probe Placement

The system typically uses three probes: High, Mid, and Low. The 'Mid' probe often serves as a common ground or reference point.

High Level Probe: Position this probe at the desired maximum water level. When water reaches this probe, the pump will stop.
Low Level Probe: Position this probe at the desired minimum water level. When water drops below this probe, the pump will start.
Common/Mid Probe: This probe should be placed at the lowest point in the water, ensuring it is always submerged to provide a continuous reference.
Ensure probes are securely fastened and do not touch each other or other conductive materials.

6.3 Wiring Diagram

Refer to the labels on the controller for correct wiring connections. The image below illustrates typical connections.

Wiring diagram for eletechsup LC35D01 controller showing power input, probe connections, and pump output

Image: Detailed view of the LC35D01 controller's terminal block, indicating connections for DC 12V, DC 24V, AC 220V power input, probe inputs (HIGH, MID, LOW), and pump output (OUT).

Power Input: Connect the appropriate power supply (DC12V, DC24V, or AC85-265V) to the 'DC Vout', 'Vin', 'GND' terminals for DC versions, or 'AC L', 'N' terminals for AC versions.
Probe Connections: Connect the 'High' level probe to the 'HIGH' terminal, the 'Low' level probe to the 'LOW' terminal, and the 'Common/Mid' probe to the 'MID' terminal.
Pump Output: Connect your water pump to the 'OUT' terminals. Ensure the pump's power requirements do not exceed the controller's maximum load.
Double-check all connections for tightness and correct polarity before applying power.

7. Operating Principle

The LC35D01 controller operates based on the conductivity detected by the probes at different water levels.

Water Level Rises: When the water level is below the 'Low level' probe, the water pump starts to fill the tank/water tower. When the water level rises and reaches the 'High level' probe, the water pump stops.
Water Level Reduces: After the pump stops, the water level may decrease. If the water level drops below the 'High level' probe but is still above the 'Low level' probe, the water pump remains off. The pump will only restart when the water level falls below the 'Low level' probe again.

This hysteresis (difference between start and stop levels) prevents frequent pump cycling, extending pump life.

8. Maintenance

Regular maintenance ensures the longevity and reliable operation of your water level controller.

Probe Cleaning: Periodically inspect the probes for mineral buildup, algae, or other debris that might affect their conductivity. Clean them gently with a non-abrasive brush if necessary.
Wiring Inspection: Check all electrical connections regularly for corrosion, looseness, or damage. Tighten any loose connections.
Controller Environment: Ensure the controller remains in a dry, clean environment, free from excessive dust or moisture.
Power Cycle: If the system behaves unexpectedly, try power cycling the controller (disconnect and reconnect power) to reset it.

9. Troubleshooting

If you encounter issues with your water level controller, refer to the following troubleshooting guide:

Problem	Possible Cause	Solution
Pump does not start when water is low.	No power to controller. Low level probe not submerged or faulty. Pump wiring issue or pump failure. Controller faulty.	Check power supply and connections. Ensure low level probe is correctly positioned and clean. Test probe continuity. Verify pump connections and test pump independently. Contact support if other solutions fail.
Pump does not stop when water is high.	High level probe not submerged or faulty. Probes short-circuited. Controller faulty.	Ensure high level probe is correctly positioned and clean. Test probe continuity. Check probe wiring for shorts. Contact support if other solutions fail.
Pump cycles too frequently.	Insufficient distance between High and Low probes. Water turbulence affecting probes.	Adjust probe positions to increase the water level differential. Relocate probes or add a baffle to reduce turbulence.
Controller lights not working.	No power to controller. Incorrect voltage input.	Check power supply and connections. Verify power input matches controller version (12V, 24V, or 220V).

10. Warranty and Support

For warranty information and technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your purchase receipt as proof of purchase.