This float-based switch tells your PolarCool touchpad-controlled cooler when the water reservoir is running low, and it shuts the pump off automatically so it doesn't run dry.
The 3001-0050 is PolarCool's genuine replacement liquid level switch for touchpad-controlled evaporative coolers. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
A dry-running pump wears out fast, and by the time you notice, you're often looking at a full pump replacement. This switch is the built-in safeguard against that: the float tracks water level continuously, and once it drops below the safe threshold, the controller cuts power to the pump automatically.
Critical Fitment & Requirements
- Type: Liquid Level Switch with Float Sensor
- Detection method: float-based water level sensing
- Function: low water detection for automatic pump shut off
- Compatible with: all PolarCool touchpad controller models, including Zone 11K, Pro, and all 18", 24", and 36" models
- NOT compatible with: PolarCool models without touchpad controllers
- NOT compatible with: older PolarCool models that use toggle switches
The float on this switch has to swing freely through its full range, and the most common install mistake is mounting it too close to a wall of the reservoir or a support bracket, which lets the float hang up and gives the controller a false "full" reading — pump keeps running dry and burns out anyway. Before you button up the panel, cycle the float by hand through its complete travel and confirm nothing binds. Always disconnect power and follow lockout/tagout procedure before you touch the wiring, and verify each connection is secure and properly insulated before refilling the reservoir. Once you fill the tank, test the shut-off by lowering the water below the minimum threshold and confirming the controller actually kills pump power — don't consider the job done until you see that shut-off happen.
Key Benefits
- Protects the pump by automatically cutting power when water level runs low
- Extends pump service life and cuts down on maintenance calls
- Float-based detection gives accurate, mechanical low-water sensing — no guesswork
- Genuine PolarCool component built for reliable cooling performance
- Direct-fit replacement, so install time stays short
| Spec | Value | Unit |
|---|---|---|
| Part Number | 3001-0050 | - |
| Type | Liquid Level Switch with Float Sensor | - |
| Detection Method | Float-based water level sensing | - |
| Function | Low water detection / automatic pump shut off | - |
| Price | 46.00 | USD |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Fits: all PolarCool touchpad-controlled models, including Zone 11K, Pro, 18", 24", and 36" models
- Fits: 36 Pro and 36 Zone touchpad-controlled units
- Does NOT fit: PolarCool models without touchpad controllers
- Does NOT fit: older PolarCool models with toggle switches instead of touchpad controllers
Compliance & Environment
| Item | Guideline |
|---|---|
| Electrical Safety | Disconnect power and follow lockout/tagout procedures before installation |
| Installation Standard | Follow manufacturer installation guidelines and applicable electrical codes for safe, reliable operation |
| Post-Install Check | Test automatic pump shut off by lowering water below minimum threshold and confirming controller response |
FAQ
Will this liquid level switch fit my PolarCool cooler?
It fits all PolarCool models with touchpad controllers, including Zone 11K, Pro, and the 18", 24", and 36" models. It does not fit PolarCool models without touchpad controllers or older units that use a toggle switch.
How does this switch protect my pump?
A small float rises and falls with the water level. When water gets too low, the float sends feedback to the controller, which automatically shuts off power to the pump so it doesn't run dry.
Is this a direct-fit replacement part?
Yes. It is a genuine PolarCool replacement component designed as a direct-fit swap into the compatible touchpad-controlled models listed.
Do I need to drain the reservoir before installing it?
Yes. Disconnect power and follow lockout/tagout procedures first, then drain the water reservoir before removing the old switch.
Will this work on a 36 Zone or 36 Pro unit?
Yes. It is compatible with 36 Pro and 36 Zone models, along with the other touchpad-controlled 18", 24", and 36" units and the Zone 11K.
Warranty & Registration
This is a genuine PolarCool replacement part. For manufacturer warranty terms, registration steps, and full documentation, refer to the "Resources (System Manuals and Warranty)" Tab above on this page. Ask us before you order if you're not sure this switch matches your controller type — we always reply back.
