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Liquid ring vacuum pumps sterilisers SIHI extruvac LEMS 30, LEMS 55

Liquid ring vacuum pumps sterilisers SIHI extruvac LEMS 30, LEMS 55
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Liquid ring vacuum pumps sterilisers SIHI extruvac LEMS 30, LEMS 55 - 1

Liquid ring vacuum pumps for sterilisers in two-stage and compact design SIHIsterivac LEMS 30, LEMS 55 VAKUUM TECHNOLOGY LEMS 133.71222.52.01 E 03/2008 Pressure range: 33 to 1013 mbar Suction volume flow: 9 to 57 m³/h CONSTRUCTION TYPE Sterling SIHI liquid ring vacuum pumps are displacement pumps of uncomplicated and robust construction with the following particular features: non-polluting due to nearly isothermal compression oil-free, as no lubrication in working chamber handling of nearly all gases and vapours small quantities of entrained liquid can be handled easy maintenance and reliable operation low noise and nearly free from vibration protection against cavitation as standard incorporated central drain no metallic contact of rotating parts Sterling SIHI liquid ring vacuum pumps of the LEMS series are two-stage ones. APPLICATION Handling and exhausting of dry and humid gases; entrained liquid can be handled during normal duty. The pumps are applied in all fields where pressures of 33 ... 900 mbar must be created by robust vacuum pumps. NOTE During operation the pump must continuously be supplied with service liquid, normally water, in order to eliminate the heat resulting from then gas compression and to replenish the liquid ring, because part of the liquid is leaving the pump together with the gas. This liquid can be separated from the gas in a liquid separator (see catalogue part accessories). It is possible to reuse the service liquid. The pumps are equipped with a device by which the contaminated service liquid can continuously be drained during operation (dirt drain), if necessary. GENERAL TECHNICAL DATA Pump type unit LEMS 30 LEMS 55 Speed 50 Hz 60 Hz 1/min 2900 3500 Max. compression over pressure bar 0.3 Max. admissible pressure difference bar 1.1 Moment of inertial of rotating pump parts and of the water filling kg . m² 0.004 0.0065 Sound pressure level at Suction pressure of 80 mbar dB (A) 63 63 Max. gas temperature dry saturated °C °C 200 100 Service liquid max. admissible temperature of material design 0A max. viscosity max. density °C mm²/s kg/m³ 80 4 1200 Volume up to shaft level litre 1.0 1.2 Max. flow resistance of the heat exchanger bar 0.2 The combination of several limiting values is not admissible.

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Liquid ring vacuum pumps sterilisers SIHI extruvac LEMS 30, LEMS 55 - 2

SIHIsterivac 2 Material design MATERIAL DESIGN Item COMONENTS 0A 1010 Vacuum casing 1130 Intermediate casing 1090, 1091 Central body 0.6025 1370 Guide disc 1.4301 2350, 2351 Vane wheel impeller 2.1096.01 4330 Mechanical seal Ceramic / Perbunan Sectional drawing LEMS 30, LEMS 55 material design 0A Fresh water requirements in [m³/h] in dependent on suction pressure, speed, mode of operation and difference in temperature Suction pressure [mbar] 33 120 200 400 KB KB KB KB Pump type Speed Difference in temperature [°C] FB Difference in temperature [°C] FB Difference in temperature [°C] FB...

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Liquid ring vacuum pumps sterilisers SIHI extruvac LEMS 30, LEMS 55 - 3

SIHIsterivac 3 Suction volume flow and power absorption LEMS 30 0 5 10 15 20 25 30 35 40 10 100 1000 Suction pressure [mbar] Suction volume flow [m³/h] LEMS 30 3.400 rpm 2.900 rpm 0,0 0,5 1,0 1,5 10 100 1000 Suction pressure [mbar] Power absorption [kW] LEMS 30 3.400 rpm 2.900 rpm The operating data are applicable under the following conditions: • pumping medium: - dry air: 20°C - water vapour saturated air: 20°C • service liquid: - water: 15°C Compression pressure 1013 mbar (atmospheric pressure) The suction volume flow is applied to the suction pressure Tolerance of the operating data 10%...

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Liquid ring vacuum pumps sterilisers SIHI extruvac LEMS 30, LEMS 55 - 4

SIHIsterivac 4 Suction volume flow and power absorption LEMS 55 0 10 20 30 40 50 60 70 10 100 1000 Suction pressure [mbar] Suction volume flow [m³/h] LEMS 55 3.400 rpm 2.900 rpm 0,0 1,0 2,0 10 100 1000 Suction pressure [mbar] Suction volume flow [kW] LEMS 55 3.400 rpm 2.900 rpm The operating data are applicable under the following conditions: • pumping medium: - dry air: 20°C - water vapour saturated air: 20°C • service liquid: - water: 15°C Compression pressure 1013 mbar (atmospheric pressure) The suction volume flow is applied to the suction pressure Tolerance of the operating data 10%...

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Liquid ring vacuum pumps sterilisers SIHI extruvac LEMS 30, LEMS 55 - 5

SIHIsterivac 5 Dimension table LEMS 30 and LEMS 55 Electric motor IP 55 weight Size kW w* w1* w2 w3 w4 abt. kg 50 Hz 60 Hz LEMS 30 90 1,1 1,5 244 393 88 144 61 23,5 LEMS 55 90 1,5 2,2 244 443 123 179 76 26,5 * Dimensions dependent on the motor make N 1 = gas inlet G 1 (alternative) N 2 = gas outlet G 1 uB = connection for service liquid G ¼ uc = connection for protection against cavitation G ¼ ue = drain connection G ¼

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Liquid ring vacuum pumps sterilisers SIHI extruvac LEMS 30, LEMS 55 - 6

SIHIsterivac 6 Order notes Series + size Hydraulic+ bearing Shaft sealing Material design Casing seal A• •Z Hydraulic A Two grease lubricated antifriction bearing arranged in the motor X1L Mechanical seal Ceramic / Perbunan 0A Main parts in GG 1 O-rings LEMS 30 LEMS 55 AZ X1L 0A 1 Spare parts LEMS 30 LEMS 55 set of joints spares 65007480 Accessories Recommended accessories LEMS 30 LEMS 55 Overhead liquid separator type weight XBa 244 2.8 kg Material design 130 / galvanized 172 / 1.4571 SIHI part no. 35 000 374 35 000 375 Service liquid line Material design 072 / St 37-0 172 / 1.4571 SIHI...

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