Dry running protection

Note: This article was proposed for deletion on Wikipedia.

Dry running protection, also known as dry-run protection or dry-running protection, is a type of protection mechanism to prevent a rotor, pump or stirrer shaft from operating without any medium added, as the bearing and shaft seal might be damaged if the motor is run while dry. Dry-running protection is one of the most important monitoring functions. It is thus always recommended to install dry-running protection on all booster sets.

There are three different methods for detection of water shortage: Pressure switch on suction manifold or float switch/electrode relay in the supply tank: Dry-running protection with pressure/level switch.

Measurement of inlet pressure in the suction manifold by means of an analogue pressure transmitter: Dry-running protection with pressure transmitter.

Measurement of level in the supply tank by means of an analogue level transmitter: Dry-running protection with level transmitter.