RUVAC WSU 2001 3Ph 200/230/400 V 50 Hz, 200-208/265/460 V 60 Hz; PFPE LEYBONOL LVO 400, H version with ACE damper, 100 Hz operation possible

Leybold RUVAC WSU 2001 – Roots pump with canned motor and 2050 m³/h nominal pumping speed

The RUVAC WSU 2001 is the top model of the canned-motor series with pressure equalisation line: 2050 m³/h nominal pumping speed, start at atmospheric pressure and 7.5 kW motor power at 50 Hz. No other size offers as many versions – H versions with ACE damper, 100 Hz versions, pumps for horizontal pumping direction and a version with a water-cooled motor. The nominal pumping speed is 2050 m³/h at 50 Hz and 2460 m³/h at 60 Hz, the maximum effective pumping speed 1850 and 2100 m³/h respectively. The pump measures 1042 × 638 × 530 mm, weighs 465 kg and is connected via DN 160 ISO-K; the noise level is below 72 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 2001

The RUVAC WSU 2001 is available from Ehrler & Beck in 15 variants (part numbers 11753, 11753TE, 15096, 15096TE, 167026, 167026TE, 167056, 11853, 11853TE, 11853ATE, 167044, 167129V, 155066, 167042TE, 167052TE). All variants have the same canned motor with a motor power of 7.5 kW at 50 Hz to 8.5 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. The 100 Hz versions are approved for frequency converter operation up to 6000 min⁻¹. Three variants are supplied for horizontal pumping direction. One variant has a water-cooled motor.

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	1,850
Pumping speed 60Hz	2,100
Ultimate pressure	0.04
Rated motor power 50Hz	7.5
Rated motor power 60Hz	8.5
Weight	465
Length	104.2
Width	64.2
Height	53
Inlet connection flange	DN 160 ISO-K
Outlet connection flange	DN 160 ISO-K
Noise level	72 dB(A)
Cooling method	Air cooling
Oil type	LEYBONOL LVO 130, LEYBONOL LVO 210, LEYBONOL LVO 400

Additional technical data