This is a motor for the Edwards QMB iQMB 500 Booster Blower Pump Series. These are enclosed, water-cooled motors and are therefore suitable for applications in clean environments where fan cooling is unacceptable.The pump-motor is cooled by water flowing through a cooling jacket which surrounds the motor. The pump-motor cooling circuit is separate from the pump cooling circuit. The cooling-water supply and return pipelines are connected to the pump by connectors on the water services panel at one end of the pump.