RUVAC WS 1001 3Ph 200/230/400 V 50 Hz, 200-208/265/460 V 60 Hz; Mineral oil LEYBONOL LVO 130, TE version (CE)

Leybold RUVAC WS 1001 – Roots pump with canned motor and 1000 m³/h nominal pumping speed

The RUVAC WS 1001 is the medium size of the WS series, with DN 100 ISO-K connection flanges and a 4 kW canned motor. With a frequency converter the speed can be increased up to 6000 min⁻¹; for longer pump-down times Leybold explicitly recommends the WS pump in combination with a frequency converter. Leybold specifies the SOGEVAC SV 300 B as the backing pump. The nominal pumping speed is 1000 m³/h at 50 Hz and 1200 m³/h at 60 Hz, the maximum effective pumping speed 800 and 1000 m³/h respectively. The pump measures 885 × 376 × 396 mm, weighs 228 kg and is connected via DN 100 ISO-K; the noise level is below 68 dB(A).

Typical applications

The RUVAC WS/WSU work as boosters in front of an oil-sealed or dry backing pump. Leybold recommends the canned-motor series for applications requiring a high pumping speed between 10⁻² and 10⁻⁴ mbar, for processes in which neither air may enter nor pumped medium escape, and for the extraction or transfer of high-purity gases. Typical applications of the RUVAC series are heat treatment and furnace construction, metallurgy, large-area coating, load-lock chambers and crystal pulling systems for the semiconductor and solar industries.

Variants of the RUVAC WS 1001

The RUVAC WS 1001 is available from Ehrler & Beck in three variants (part numbers 11742, 11742TE, 11747). All variants have the same canned motor with a motor power of 4 kW at 50 Hz to 4.4 kW at 60 Hz for mains voltages from 200 V to 460 V. They differ mainly in the oil filling: mineral oil LEYBONOL LVO 130, PFPE LEYBONOL LVO 400.

Features of the RUVAC WS/WSU

• Air-cooled canned motor: no shaft feedthrough to atmosphere, integral leak rate ≤ 1 × 10⁻⁴ mbar·l/s
• Temperature monitoring in the motor's stator winding; separate fan under the fan cover
• Operation on 50 and 60 Hz mains; higher speeds are possible with a frequency converter
• All elastomer seals made of FPM (FKM)
• WSU: integrated pressure equalisation line with differential pressure valve as overload protection
• Supplied for vertical pumping direction; conversion to horizontal pumping direction possible by the customer
• Oil filling supplied separately; inlet flange with dirt trap, pump vented with nitrogen for corrosion protection

Pumping speed 50Hz	800
Pumping speed 60Hz	1,000
Ultimate pressure	0.04
Rated motor power 50Hz	4
Rated motor power 60Hz	4.4
Weight	228
Length	88.5
Width	37.6
Height	39.6
Inlet connection flange	DN 100 ISO-K
Outlet connection flange	DN 100 ISO-K
Noise level	68 dB(A)
Cooling method	Air cooling
Oil type	LEYBONOL LVO 130, LEYBONOL LVO 400

Additional technical data