Waterous Overheat Protection Manager (OPM)

Thermal Relief Valve:

Opens and releases water from the pump when the water temperature reaches 140°F (60°C).

Thermal Switch:

Activates a flashing red light on the control panel when the water temperature reaches 180°F (82°C). This is an additional safety function to alert the operator that the water temperature is continuing to rise.

Optional Audible Alarm:

Will sound in conjunction with the flashing red light and provide an additional warning that the water temperature is rising.

Control Panel:

Contains the red flashing light as well as a test circuit for the light.

System Availability

CM and CS Series Models:

All components except the Control Panel and Optional Audible Alarm are mounted on the pump at the factory.

All Other Models:

All components are furnished loose for mounting flexibility. A Waterous 2-1/2 in. 4-Bolt flange is provided for mounting the Thermal Relief and switch on a discharge opening on the pump.

Retro-Fit Kit

Provides all components for adding an OPM to an existing pump.


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