This Pfeiffer air cooling fan unit mounts to the side of HiPace 350 and 450 turbo pumps and provides air flow perpendicular to the pump. This air cooling unit is powered by one of the M12 accessory output ports located on the HiPace turbo pump's integrated TC 400 drive unit. The air cooling unit will always run when the pump is on. This air cooling fan unit provides additional cooling and can increase the longevity of HiPace turbo pump's that are water-cooled. This radial air cooling fan unit has Pfeiffer part number PM Z01 374.