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Precautions for the use of rotary vane vacuum pumps in China (1)

Precautions for the use of rotary vane vacuum pumps in China (1)

(Summary description)When operating a Chinese rotary vane vacuum pump, pay attention to the following matters:1. Before using the Chinese rotary vane vacuum pump, ensure that the pump is clean and prevent debris from entering the pump.

Precautions for the use of rotary vane vacuum pumps in China (1)

(Summary description)When operating a Chinese rotary vane vacuum pump, pay attention to the following matters:1. Before using the Chinese rotary vane vacuum pump, ensure that the pump is clean and prevent debris from entering the pump.

Information

  When operating a Chinese rotary vane vacuum pump, pay attention to the following matters:

Rotary vane vacuum pump

  1. Before using the Chinese rotary vane vacuum pump, ensure that the pump is clean and prevent debris from entering the pump. Check the oil level, and it is advisable to fill the oil to the center of the oil mark when the pump is stopped. If it is too low, the exhaust valve cannot seal the oil and affect the vacuum degree. If it is too high, it will cause fuel injection when starting from the atmosphere.

  When the Chinese rotary vane vacuum pump is running, the oil level rises, which is a normal phenomenon. The oil adopts the specified grade of clean vacuum pump oil and is added from the oil injection hole. After refueling, the screw plug should be screwed on. The oil should be filtered to prevent debris from entering and blocking the oil hole. Add oil to the vacuum pump according to the oil mark. Rotate the three-way valve to make the suction pipe of the pump communicate with the atmosphere, and isolate it from the evacuated container, and open the exhaust port.

  2. When the ambient temperature of the Chinese rotary vane vacuum pump is too high, the temperature of the oil will rise, the viscosity will drop, and the saturated vapor pressure will increase, which will cause the ultimate vacuum to drop, especially the full pressure measured by the thermocouple meter.

  3. The Chinese rotary vane vacuum pump should not be used to remove gases with high oxygen content, explosiveness and corrosion to metals. In addition, it is not suitable to inhale gases that can react with pump oil and gases containing a large amount of water vapor.

  4. The pump can be started again under the atmosphere or any vacuum degree. If a solenoid valve is attached to the pump port, it should be operated at the same time as the pump.

  5. After the Chinese rotary vane vacuum pump runs normally, slowly rotate the three-way valve to make the suction pipe of the pump communicate with the evacuated container and isolate it from the atmosphere.

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