Roots Vacuum Pumps 2016 by Leybold

More catalogs by Leybold | Roots Vacuum Pumps 2016 | 40 pages | 2017-05-08

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Page 16 of Roots Vacuum Pumps 2016

technical data wa/wau 251 wa/wauh 501 50 hz 60 hz 50 hz 60 hz nominal pumping speed m x h cfm 253.0 149.0 304.0 179.0 505.0 297.4 606.0 357.0 max effective pumping speed with backing pump 210.0 123.7 d 65 b – 251.0 148.0 d 65 b – 410.0 241.0 – sv 200 530.0 312.0 – sv 200 1 ultimate total pressure 2 3 -1 m3 x h-1 cfm trivac sogevac mbar torr 8 x 10-4 6 x 10-4 max permissible pressure difference during continuous operation 3 mbar torr leak rate integral mbar xlxs -1 mains supply 8 x 10-4 6 x 10-4 4 x 10-2 3 x 10-2 4 x 10-2 3 x 10-2 80.0 60.0 80.0 60.0 80.0 60.0 80.0 60.0 5 x 10 5 x 10 5 x 10 5 x 10-4 -4 -4 -4 v 200-240 200-240 200-240 200-240 v 380-400 380-480 380-400 380-480 thermal class ffff permissible ambient temperatures motor power °c °f kw hp energy efficiency class +5 to +40 41 to +104 +5 to +40 41 to +104 +5 to +40 41 to +104 +5 to +40 41 to +104 1.1 1.5 1.1 1.5 2.2 3.0 2.2 3.0 ie 2 ie 2 ie 2 ie 2 nominal speed approx rpm 3000 3600 3000 3600 max permissible speed rpm 3600 3600 3600 3600 type of protection ip 55 55 55 55 atex protection category 4 category 3i category 3i category 3i category 3i lubricant for the bearing chamber vertical pumping action approx l qt horizontal pumping action approx l qt 0.6 0.63 0.45 0.48 0.6 0.63 0.45 0.48 0.8 0.85 0.7 0.74 0.8 0.85 0.7 0.74 lubricant of the shaft sealing ring housing l qt 0.6 0.63 0.6 0.63 1.0 1.06 1.0 1.06 dn 63 iso-k 63 iso-k 63 iso-k 63 iso-k c steel crni steel grey cast iron fpm fkm c steel crni steel grey cast iron fpm fkm c steel crni steel grey cast iron fpm fkm 5 connection flanges materials materials in contact with the gas c steel crni steel grey cast iron fpm fkm weight wa wau kg lbs noise level dba 6 85.0 89.0 85.0 89.0 187.4 196.2 187.4 196.2 282.2 293.3 128.0 133.0 128.0 133.0 282.2 293.3 62 64 65 67 to din 28 400 and subsequent numbers with double-stage rotary vane vacuum pump trivac resp single-stage rotary vane vacuum pump sogevac type of backing pump look at max pumping speed when using 2-stage backing pumps the ultimate pressures will be correspondingly lower 3 applicable for ratio up to 1 10 between backing pump and roots vacuum pump at 3000 rpm 4 for atex category 3o a appropriate motor has to be used please contact leybold solution 5 authoriative however is the oil level at the oil-level glass 6 valid under ultimate pressure conditions pressures over 10 mbar 7.5 torr produce a higher operating noise 1 2 16 leybold full line catalog fall 2016 leybold