1, turn off the valve above the vacuum pump 2, the cooling water pump connected to the cooling water. 3, the provisions of the steering wheel near the pulley a few laps, the vacuum pump chamber of the oil into the tank, to ensure that the start is not easy to fuel. (Especially in winter, sticky oil, start the load, so please note). 4, start the motor, the vacuum pump started running, observe the oil window, check the oil level. Oil level should be in the center of the oil, the oil level is too high, will cause fuel injection; low oil level, will result in poor lubrication, vacuum pump ultimate pressure can not reach the factory index. Refueling, oil drain position see vacuum pump signs. Slowly open the valve above the vacuum pump, the system began to work. Vacuum pump is not working, the oil window can hardly see the oil, have entered the vacuum pump body, the oil level to the operation of the vacuum pump prevail. 5, cooling water inlet temperature is not more than 30 ℃ is appropriate, out of the water temperature difference of not more than 3 ℃ is appropriate. 6, when the ambient temperature is below 5 ℃, the vacuum pump oil should be released after heating to 15-30 ℃ to join the pump to start working. 7, the vacuum pump temperature minus the ambient temperature does not exceed 40 ℃ is appropriate, or should be strengthened ventilation or cooling water flow. 8, the inlet temperature is higher than 40 ℃ and the vacuum pump temperature is too high, take measures to cool the gas. 9, when the inhalation of gas on the vacuum pump oil or vacuum have an impact, in front of the vacuum pump should be fitted with a suitable filter device. 10, when the vacuum pump contains a small amount of condensable gas pump, start the vacuum pump should open the gas valve for half an hour to extend the use of vacuum pump time. 11, when the vacuum pump contains particles, dust gas, in front of the vacuum pump should be fitted with a suitable filter. 12, off the vacuum pump, you should first turn off the valve above the vacuum pump and the system isolated, and then stop the vacuum pump, and then tighten the gas town valve to prevent oil leakage, and finally turn off the cooling water. Frozen winter occasions should put a net vacuum pump cooling water, to prevent the vacuum pump cavity cracking. Note: The ultimate pressure of the vacuum pump refers to the vacuum pump without any container, vacuum pump temperature reached a stable, with a compressed-type vacuum gauge in the mouth of the measured minimum stable vacuum pressure. The ultimate pressure is for reference only. In general, a half-hour operation of a single vacuum pump will reach the ultimate pressure.