RUVAC WSU 1001 3Ph 200/230/400 V 50 Hz, 200-208/265/460 V 60 Hz; Mineral oil LEYBONOL LVO 130

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

The RUVAC WSU 1001 is the choice for short cycles: according to Leybold, pump-down processes of under two minutes should always be run with a WSU pump, because the pressure equalisation line allows starting at atmospheric pressure. The H version with ACE damper is available with three oil fillings – mineral oil, ester oil LVO 210 and PFPE LVO 400. For size 1001, Leybold offers the LEYTRONIC frequency converter. 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 × 494 × 396 mm, weighs 233 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 WSU 1001

The RUVAC WSU 1001 is available from Ehrler & Beck in six variants (part numbers 11743, 11743TE, 11843, 11843TE, 167097, 15047). 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, ester oil LEYBONOL LVO 210, PFPE LEYBONOL LVO 400. The H versions have an ACE damper in the pressure equalisation line.

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	233
Length	88.5
Width	49.4
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 210, LEYBONOL LVO 400

Additional technical data