Description The Amber Stack Light may be mounted on the top of an enclosure or near the STS Tank Cleaning System. When the Tank Cleaning System Controller senses a fault, the pump shut off and a signal is sent to the Stack Light. The Stack Light will commence flashing to alert maintenance personnel that the system is in need of attention. The problem may be a flow restriction indicating that a fuel filter element needs to be changed. Or that an accumulation of fluid in the tray has triggered the leak control sensor. Maybe some other flow problem has occurred. The Stack Light is often installed with the Audible Alarm. 24-Volt DC
