North Star M157593E 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. The valve will no longerfunction properly. See a dealer or call Product Support at 1-800-270-0810.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 dischargespray temperature and automatically turns the burner off when thetemperature setting is reached. When the discharge spray temperature drops,the burner automatically 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