The Herrmann Keep Dry System is an automatic, preventative maintenance system for inground lifts that operates pneumatically via an air supply line. It prevents expensive maintenance calls and lift downtime while extending the service life of hydraulic components.

During each lowering process, a pulse from the control system activates the built-in vacuum pump. Any liquid present is transported upwards through the suction pipe. From there, it is drained out through a drain pipe.