9-5967 - Tweco 9-5967 Coolant Temperature Switch Assembly

Technical Overview of the ESAB 9-5967 Temperature Switch Assembly

The ESAB 9-5967 is a specialized Temperature Switch Assembly designed for integration into industrial welding cooling systems. As a critical component within the thermal management subsystem of water-cooled welding setups, this switch functions as a safety interlock and regulation device. It is engineered to monitor the temperature of the coolant circulating through the system, ensuring that thermal parameters remain within the safe operating limits defined by the equipment manufacturer. This part is commonly identified with Tweco and ESAB water coolers, serving as a direct OEM replacement for the original 9-5967 component.

Technically, the assembly typically consists of a thermal sensing element housed within a durable casing, complete with necessary wiring leads for connection to the cooler's control circuit. When the coolant temperature exceeds a specific threshold, the switch changes state (opening or closing the circuit), which triggers the cooling system's safety protocols. This may involve activating a high-speed fan mode, triggering an alarm, or shutting down the power source to prevent catastrophic failure of the welding torch or the pump itself. Maintaining the integrity of this sensor is vital for the longevity of the entire welding station.

Installation of the 9-5967 requires adherence to standard electrical safety procedures. As an OEM part, it ensures correct calibration and fitment, eliminating the risks associated with generic universal switches that may not trigger at the precise temperatures required for ESAB and Tweco equipment. This assembly is built to withstand the vibration and environmental conditions typical of fabrication shops and industrial manufacturing facilities.

By replacing a faulty temperature switch with this genuine ESAB unit, maintenance personnel restore the closed-loop protection of the cooling system. This proactive maintenance step is essential for high-amperage TIG and MIG welding applications where liquid cooling is mandatory to dissipate the intense heat generated at the torch head.