The PolarCool Liquid Level Switch (Part No. 3001-0050) is a critical safety and protection component designed for PolarCool portable evaporative air coolers with touchpad controllers. This intelligent liquid level sensor features a small float that raises and lowers with the water level, sending feedback to the controller to automatically shut down power to the pump in the event of low water. This essential safety feature prevents pump damage from dry running, extends equipment service life, and ensures reliable operation of evaporative cooling fans, warehouse cooling systems, swamp coolers, and industrial air coolers.

Key Features

• Replacement liquid level switch for all PolarCool models with touchpad controllers.
• Compatible with Zone 11K, Pro, and all 18", 24", and 36" touchpad-controlled models.
• Small float raises and lowers with water level for accurate detection.
• Sends feedback to controller for automatic pump shut off when water is low.
• Prevents pump damage from dry running in portable evaporative air coolers.
• Direct-fit replacement for reliable performance in industrial air coolers and warehouse cooling systems.

Benefits

• Protects pump from damage by automatically shutting off power when water level is low.
• Extends pump service life and reduces maintenance costs for evaporative cooling fans.
• Accurate float-based detection ensures reliable low water sensing in swamp coolers.
• Automatic shut off prevents dry running and overheating in heavy-duty evaporative coolers.
• Direct-fit replacement simplifies installation and reduces service time for maintenance teams.
• Essential safety component for energy-efficient cooling solutions and outdoor cooling systems.

Applications

• Replacement parts for coolers: All PolarCool models with touchpad controllers including Zone 11K, Pro, and all 18", 24", and 36" models.
• Ideal for warehouse cooling, outdoor cooling solutions, and portable evaporative air coolers.
• Suitable for industrial air coolers, swamp coolers, and commercial cooling applications.
• Best portable evaporative cooler for summer maintenance and cooling accessories.
• Recommended for maintenance inventories and service kits for facilities managing PolarCool touchpad-controlled equipment.

Compatibility & Installation Notes

• Compatible With: All PolarCool models with touchpad controllers including Zone 11K, Pro, and all 18", 24", and 36" models. 
• Function: Detects low water in the fan for automatic pump shut off.
• Not Compatible With: Models without touchpad controllers or older toggle switch models.
•  Disconnect power and follow lockout/tagout procedures before installation.
• Drain water reservoir before removing old liquid level switch. Remove old switch from mounting location and disconnect wiring.
• Connect wiring to replacement liquid level switch according to wiring diagram or original configuration.
• Install switch in proper mounting location with float positioned to move freely with water level. 
• Ensure float can move freely without obstruction throughout full range of water levels.
• Verify wiring connections are secure and properly insulated. 
• Fill water reservoir to proper level and test switch operation.
• Follow manufacturer installation guidelines and electrical codes for safe, reliable operation.
• Test automatic pump shut off function by lowering water level below minimum threshold. 
• Verify controller receives proper feedback signal and shuts off pump when water is low.
• Inspect switch periodically for proper float movement and electrical function.

Specifications

• Type: Liquid Level Switch with Float Sensor
• Function: Low water detection for automatic pump shut off
• Compatible Models: All PolarCool touchpad controller models including Zone 11K, Pro, and all 18", 24", and 36" models
• Detection Method: Float-based water level sensing Application: Pump protection and automatic shut off

Why Choose

This PolarCool Liquid Level Switch For maintenance teams and facility operators managing PolarCool portable evaporative air coolers with touchpad controllers, the Liquid Level Switch (3001-0050) offers essential pump protection that prevents damage from dry running, extends equipment service life, and ensures reliable automatic shut off across warehouse cooling, industrial air coolers, and outdoor cooling systems — delivering energy-efficient cooling solutions with built-in safety protection for demanding environments. The liquid level switch has a small float on the end that raises and lowers with the water level, sending feedback to the controller to shut down power to the pump in the event of low water.

Key Features

• Genuine PolarCool replacement component
• Built for durability and reliable cooling performance
• Designed for easy installation

Compatibility

18, 24, 36, 36 Pro, 36 Zone