Under normal loading conditions, the SpillStop Ultra™ is wired with an external warning horn and the loading pump.  When the tank is being filled, the SpillStop™ will activate the warning horn and first-level shutdown at the Alarm 2 set point pre-programmed in the 808P2.  The Alarm 2 set point is used to alert the operator that the tank is nearing full.  Once Alarm 2 is activated, the horn alarm will sound AND the pump will shut off.  At this point, the operator can press the bypass button on the SpillStop™ to silence the horn and regain the pump to clear the hose.  However, if the operator continues to load to alarm 1 (high-level shutdown)also pre-programmed in the 808P2, the pump will shut off and will not power up again until the tank level drops below the alarm 1 set point.  Alarm 1 is used as a high-level emergency shutdown and cannot be bypassed.  As an added feature, the SpillStop™ can be wired to a pressure switch on the load line.  If pressure on the load line spikes due to a valve being closed, the SpillStop will immediately shut down the pump, preventing hose blow-out.  

If loading begins before a ground connection is established, or if the ground connection is lost during operation, a warning horn will sound. If the connection is not made or restored within the preset time, the final alarm will activate. After loading is complete, shut down the loading system and disconnect the ground clamps.