Automatic shutdown occurs if you run out of water in which mode and you do not take any action to correct it?

Automatic shutdown occurs if you run out of water in which mode and you do not take any action to correct it?

• A. Pressure
• B. Temperature
• C. Flow
• D. Volume

Answer: (A)

When a pump is set to hold a constant discharge pressure, losing the water supply means the pump cannot maintain that pressure. The suction can’t deliver water, so the discharge pressure falls and the system detects an unsafe condition. To protect the pump from running dry, overheating, or cavitation, it automatically shuts down if the water source is exhausted and no corrective action is taken. In other modes, the control isn’t hinged on maintaining a fixed pressure, so the automatic shutoff isn’t invoked in the same way when the water runs out.

When a pump is set to hold a constant discharge pressure, losing the water supply means the pump cannot maintain that pressure. The suction can’t deliver water, so the discharge pressure falls and the system detects an unsafe condition. To protect the pump from running dry, overheating, or cavitation, it automatically shuts down if the water source is exhausted and no corrective action is taken. In other modes, the control isn’t hinged on maintaining a fixed pressure, so the automatic shutoff isn’t invoked in the same way when the water runs out.