Warrick 26B1D0R Control

The Warrick 26B1D0R Control is a rugged, open-board liquid level control designed specifically for low water cutoff protection in boiler and cooling tower applications. Operating on 120Vac supply voltage with a 10,000 ohm sensitivity, this direct acting unit provides reliable conductance-based sensing for standard water applications. The SPDT relay configuration features one normally open and one normally closed contact, offering flexible integration into safety loops. Engineered for high-vibration environments, the board includes a built-in 3 second time delay to eliminate nuisance tripping caused by surface turbulence or splashing. This specific model utilizes a retrofit standoff style with a retrofit plate and spade terminals, making it a drop-in replacement for older Series 26 boards. The manual reset functionality ensures the system remains locked out after a low-water event until an operator manually acknowledges the fault, maintaining critical site safety protocols without requiring a dedicated enclosure.

• Direct Acting Operation: Ideal for low-water cutoff safety circuits where the load must de-energize upon probe exposure.
• Integrated Time Delay: Short-cycle protection via a 3-second delay prevents unnecessary relay chatter and contact wear.
• Retrofit Compatibility: Designed with a standoff mounting plate to replace legacy liquid level controls with minimal rewiring.
• Fail-Safe Manual Reset: Requires human intervention to restart equipment after a trip, preventing hazardous dry-fire conditions.
• High-Conductivity Precision: 10k ohm sensitivity calibrated for reliable performance in standard potable water and condensate.

What is the purpose of the 10,000 ohm sensitivity rating?
The 10k ohm sensitivity is the threshold at which the control detects liquid. It is optimized for standard water applications; for high-purity water or specific chemicals, a higher or lower sensitivity board may be required to prevent false readings or failure to sense.

Can the Warrick 26B1D0R be used for pump-up or pump-down applications?
As a direct acting control with a manual reset, this board is primarily configured as a safety device for low-water cutoff. For automated tank filling or draining, a Series 16 or different Series 26 configuration without the manual reset requirement is usually preferred.

How does the manual reset interact with the supply voltage?
The manual reset ensures that the contacts stay in their tripped state even if water levels return to normal. The system remains interrupted until the reset button is engaged, provided the probes are submerged.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.