RUVAC WS/WSU Roots blowers - canned motor design

Root blowers with air-cooled hermetically canned motor

Leybold RUVAC WS roots blower is driven by air or water-cooled canned motor. The available frequency converters have been matched to the pump so that the possibility of mechanical overloading it is excluded. In the case of a pressure difference which is too high, the rotational speed of the pump is automatically reduced until its load. Roots vacuum pumps of the series RUVAC WSU are provided with an additional integrated pressure equalization line and a differential pressure valve. Pumps from these series are supplied with a vertical pumping action as standard.

Two air-cooled lines WS/WSU, each with four pump sizes

Highly leak-tight air-cooled pumps driven by air-cooled canned motor

Lubricated with mineral oil (alternatively with LVO 400)

Over-temperature switch in the stator coil of the motor

All elastomer seals made of FPM (FKM)/Viton

Integrated pressure equalization line with differential pressure valve prevents overloading on WSU model (optional)

A frequency converter can be used to operate the RUVAC WS 251 to 2001 pumps between 20 and 100 Hz

No shaft feedthrough to the atmosphere, thus particularly leak-tight

Conversion from vertical to horizontal pumping action can be done from the side of the customer

Supplied Equipment

The required quantity of oil is supplied separately with the pump (exceptions from this are indicated)
If no other type of oil is stated, then mineral oil LVO 100 is used as standard
Purged with nitrogen for corrosion protection
Gasket in the intake flange with integrated dirt sieve

Roots vacuum pumps of the series WAU/WSU/WHU are provided with an additional integrated pressure equalization line and a differential pressure valve.