LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161
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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 1

Liquid ring vacuum pumps in compact design LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 with threaded connection CONSTRUCTION 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 the 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 wide choice of material, therefore applicable nearly everywhere protection against cavitation as standard incorporated dirt drain incorporated central drain no metallic contact of the rotating parts The SIHI liquid ring vacuum pumps LEM/LEL are single-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 a pressure of 33 to 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 the 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. The direction of rotation is clockwise, when looking from the drive on the pump. GENERAL TECHNICAL DATA The combination of several limiting values is not admissible. * Value in parenthesis for measuring with sound insulation cup VACUUM TECHNOLOGY LEM/LEL LE 2B 05/2017

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 3

Make-up Liquid Consumption in [m3/h] dependent upon suction pressure, speed, drive type and temperature difference. FB = total service liquid flow rate on once-through system KB = flow of make-up water when combined with partial recirculation liquid at a temperature of 10 °C, 5 °C, 2 °C, warmer than make-up water

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 4

suction volume flow suction pressure suction pressure The operating data is valid under the following conditions:  process media: service liquid: Pressure of gas to be evacuated: 1013 mbar (atmospheric pressure) The suction volume is related to the suction pressure. Tolerance on operating data is 10%. The maximum consumption of make-up water occurs at the lowest suction pressure.

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 5

suction volume flow suction pressure power absorption suction pressure The operating data is valid under the following conditions:  process media: service liquid: Pressure of gas to be evacuated: 1013 mbar (atmospheric pressure) The suction volume is related to the suction pressure. Tolerance on operating data is 10%. The maximum consumption of make-up water occurs at the lowest suction pressure.

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 6

suction volume flow suction pressure power absorption suction pressure The operating data is valid under the following conditions:  process media: service liquid: Pressure of gas to be evacuated: 1013 mbar (atmospheric pressure) The suction volume is related to the suction pressure. Tolerance on operating data is 10%. The maximum consumption of make-up water occurs at the lowest suction pressure.

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 7

N 2 = gas outlet G ub = connection for service liquid G % connection for cavitation protection G % connection for drain G % connection for pressure gauge G % other motors on request * dimensions dependent upon motor supplier ** see list of accessories

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 8

N 2 = gas outlet G ub = connection for service liquid G % Uc = connection for cavitation protection G % ue = connection for drain G % Um = connection for pressure gauge G % other motors on request

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 9

uf = connection for make-up liquid G % other motors on request N 1 = gas inlet G 1A ua = connection for make-up liquid G A other motors on request 9

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 10

gas outlet G 1A uf = connection for make-up liquid G A other motors on request ** only at material 1.4571 the line

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 11

other motors on request * dimension dependent upon motor supplier N 1 = gas inlet G 1% N 2 = gas outlet G 1V2 ua = liquid drain G % uf = connection for make-up liquid G % N 1 = gas inlet G 1A N 2 = gas outlet G 2 ua = liquid drain G 1 uf = connection for make-up liquid G A other motors on request * dimension dependent upon motor supplier

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 12

Motor selection For our products we offer a lot of different motor types. To identify the right motor please specify frequency, voltage and protection class. Example for ordering LEM: LEM 126 AZ AAE 0K 0 with 3.0 kW AC motor 50 Hz, 230 VA, IP55 Example for ordering LEL: LEL 161 8B AAE 0K 0 for 4.0 kW AC motor 50 Hz, 230 VA, IP55 (motor size 112) has the complete designation: LEL 161 8B AAE 0K 0 FS

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LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161LEM 91, LEM 126, LEM 161 LEL 91, LEL 126, LEL 161 - 13

Recommended Accessory Material Execution Top Mounted Liquid Separator Top mounted separator 1.4571 Type / weight SIHI-Part No. service liquid pipework, 1.0254 service liquid pipework, thermostatic control 24V Type / weight SIHI-Part No. SIHI-Part No. SIHI-Part No. Side Mounted Liquid Separator Side mounted separator 1.4571 service liquid pipework, 1.0254 Sterling SIHI - Gas Ejector at service liquid temperature 15 °C at service liquid temperature 30 °C Type Weight Type Weight GEV 126 A 3.9 resp. 4.2 kg GEV 126 B 3.9 resp. 4.2 kg Sterling SIHI - Non Return Ball Valve Brass +...

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