North Star M157309M.1 Owner's Manual

Special Equipment Safety Features9High PressureRelief ValveWARNING: If the high-pressure relief valve ever discharges water,turn the engine off and do not use the machine. Call Product Support at1-800-270-0810.This unit is equipped with a high-pressure relief valve, which acts as a backupsafety feature. If the unloader malfunctions, the high-pressure relief valvewill open and relieve excess system pressure.HighTemperatureLimitThis unit is equipped with a high temperature limit that measures watertemperature and automatically turns the burner off when the temperaturesetting is reached. When the water temperature drops, the burnerautomatically reignites.Thermal ReliefValveThis unit is equipped with a thermal relief valve to protect the pump fromoverheating. The pump continues to work in bypass mode when you are notspraying. If high temperatures are developed during bypass mode, thethermal relief valve will open and discharge hot water onto the ground,protecting the pump from overheating. The thermal relief valve is located onthe unloader bypass port.Spray Gun SafetyLatchThe spray gun is equipped with a built-in trigger safety latch to guard againstaccidental trigger actuation.00417Safety LatchFIG02330FIG02329High PressureRelief Valve