WRJ external lubrication gear pump use and maintenance: 1. Before starting the pump should check the direction of the steering and the provisions of the same. 2. It is advisable to lubricate the delivery chamber of the pump with lubricating fluid before switching on the machine to prevent dry friction between the rotor and the side plates and between them and the sealing friction surface. 3 boot check pump rotation is flexible, there is no jamming phenomenon. 4. Open the import and export valves. 5. Every 24 hours to check whether the gearbox oil in the provisions of the oil level, not too much or too little. 6. In the work of abnormal noise, fever, leakage and other abnormal phenomenon, should be immediately shut down, shut down should first cut off the power, and then close the valve.