Liquid ring vacuum pump installation

The 2BV liquid ring vacuum pump and compressor system are composed of vacuum pump (compressor), motor and gas-water separator pipeline.
The working process of 2BV liquid ring vacuum pump and compressor and gas-water separator is as follows: gas enters 2BV liquid ring vacuum pump or compressor through pipeline through valve, then enters gas-water separator through exhaust pipe, and discharges through exhaust pipe of gas-water separator. When used as a compressor, the gas-water mixture discharged by the compressor is separated in the gas-water separator, and the gas is conveyed to the system requiring compressed gas through the valve.
The working water in the 2BV liquid ring vacuum pump or compressor is reused by the gas-water separator without cooling drainage to the vacuum pump. The rest of the working water is supplemented by the water supply pipe. The size of the water supply is adjusted by the valve on the water supply pipe. The difference between gas suction and pressure delivery systems is only that the internal structure of the gas-water separator is different. When sucking gas, the suction pressure is lower than atmospheric pressure, while the exhaust pressure is equal to atmospheric pressure, and the gas-water separator has overflow pipe; when pressurizing gas, the suction pressure is atmospheric (or vacuum) and the exhaust pressure is higher than atmospheric pressure. In order to ensure the pressure of conveying gas, the water level of the gas-water separator passes through the overflow switch. Control.
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What's the cause of drawing 1.5 times ampere?

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