What does the emergency run switch do?

• A. Shuts down the system
• B. Activates audible alarm
• C. Reduces pump pressure
• D. Allows unit to run bypassing motor overloads and enables restart of the motor if tripped or overloaded

Answer: (D)

The emergency run switch is an override that lets a motor continue to run even if its protective overloads have tripped, and it allows the motor to be restarted if it has tripped or become overloaded. In normal operation, overload protections are there to stop a motor when current is too high and prevent damage. When you engage emergency run, those protections are bypassed so you can bring the unit up and running to a safe point or complete an urgent operation. This is not about shutting things down, triggering alarms, or changing pump pressure directly; it’s about giving you a controlled way to restart and run the motor during an emergency while you address the underlying issue. Use is limited to emergencies, and normal protections should be restored as soon as practical.