How to start and stop liquid ring vacuum pump?

This video from SOUZ VACUUM PUMP showing the operation procedure of liquid ring vacuum pump 2BV model, how to start and stop the vacuum pump after received pump from SOUZ VACUUM.
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[@warren4844]

Does it need gas or air intake??

[@-ltd]

Пробное включение при открытой крышке коробки с контактами без изоляции... LOL!

[@mohammadsaklenshaikh2025]

Sir is it single stage or multi stage liquid ring vaccum pump?

[@souzvacuum5958]

Hi, this is Single stage liquid ring vacuum pump. Monoblock type 2BV model. Welcome to visit more information at our site, www.souzvac.com