abstract |
SUMMARY OF THE INVENTION The present invention provides a circulating blower, vacuum pump, or similar having a casing (2), a rotor (3) disposed within the casing, and rotor bearings (6, 7). About the machine. In particular, a vibration sensor (11) is fixed to the casing (2) of the pump so that the damage of the bearing can be recognized as soon as possible. It is proposed to provide a unit (14). |