Many users don't understand the use conditions of vacuum pump, which often causes the damage of vacuum pump, so under what conditions is the best use of vacuum pump? According to the basic needs of users and their own experience, the technicians of vacuum pump factory summarized the following points, hoping to help you.
(1) The selection of vacuum pump should be based on the user's specific process, such as the vacuum degree, the pumping rate, the selection of power supply voltage, etc.
(2) The vacuum pump should be cleaned and changed regularly. Especially for the rotary vane vacuum pump, kerosene or straight run gasoline shall be used for cleaning. After cleaning, all parts shall be dried, air dried or blown with a blower. When changing oil, 100 × or 1 × clean vacuum pump oil shall be selected. If other oil is used instead, the vacuum degree will be seriously affected, the vacuum pump shall be placed in a clean and dry place.
(3) The connection pipeline between vacuum pump and user system shall be mainly short and thick, and elbows shall be minimized. If there are elbows, all joints shall be strictly sealed to ensure no air leakage.
(4) The temperature of the gas pumped by the vacuum pump is also limited. If the temperature of the gas pumped by the water ring vacuum pump is higher than 40 ℃, a gas cooling device shall be added. If there is liquid drop, condensation dehumidification device shall be added. If the pumped gas has corrosiveness or chemical reaction with oil, the material of vacuum pump shall be selected.
(5) Before starting the pump, check whether the rotation direction of the motor is correct (when checking the direction, take off the drive belt first to avoid oil gushing out when the motor reverses). The inspection methods of the rotary vane vacuum pump and the water ring vacuum pump are different, and check whether the lubrication system is reliable and the oil quantity is appropriate.
（6） The oil temperature of vacuum pump in operation shall not exceed 75 ℃, and there shall not be too much noise and vibration, otherwise it shall be shut down for maintenance.
(7) When stopping the pump, the valve connecting the vacuum system shall be closed first, and the vent valve shall be opened to prevent the pump oil from being sucked back into the vacuum system, and then the power supply of the motor shall be cut off.
To sum up, the service life of the vacuum pump is not only related to the quality of the vacuum pump itself, but also requires the user to use it in strict accordance with the requirements of our factory. It is not allowed to dismantle or operate the pump without permission under unclear conditions.
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