Operation method of electric air pump:Check the amount of oil before each use, the oil should exceed the red dot, but not too much. The oil that is exported to foreign countries is taken out and needs to be added by itself.Replace the breathing plug.(Very important) Change the oil cover used for transportation to a strip-shaped breathing plug.To install the water pump, you need to put the water pump into the water, The more cold water, the better, After the water pump is normally circulated, the electric Air pump can be turned on. Manually shut down after reaching the required pressure,the whole process needs attention. and it is forbidden to leave.The mechanical pressure gauge directly screws the pointer to the required pressure. When the pressure rises to the set pressure after starting, it will automatically stop.Loosen the air bleed screws on both sides before staring the machine,(Remember the machine needs to start under zero pressure. If the bleeder screw is not loosened. the machine will not start. After stating the machine,tighten the Bleed screws on both sides to press normally. After the end of the inflation, loosen the deflated screw and then deflate, then take the inflation joint.Press the "SET" button to set the required pressure. Press "ON" tostart the machine. When the pressure rises to the set pressure,it will stop automatically.Specifications:Name: Electric High Pressure Inflatable PumpPower supply: 220V/50HzCurrent: 8A-10AWork pressure: 0-30 MPASpeed: 2800R/MinPower: 1800WWeight: 17KGLubrication mode: oil splash typeSize: 34CM * 37CM * 18CMWorking noise: 70dBUse time: 6.8l (45 min); 0.5l (5 min); 0.45l (4min); 0.35l (3: 40min)