Automatic Cool Down System (Thermal Relief) - Generac Power Systems Pro 6712 Operator's Manual

Operation
Automatic Cool Down System
(Thermal Relief)
When power washer runs for 3-5 minutes
without spray gun activation, circulating water
in pump can reach temperatures above 133°F
(56.1 ºC). Thermal relief system engages to
cool pump by discharging warm water onto
ground.
Owner's Manual for Power Washer 11