The use of arc gear pump 1. Ordinary use should be checked arc gear pumps and pipe joints with loose phenomenon. Turn circular arc gear pump by hand and see if circular arc gear pump is flexible. 2 arc gear pump bearing body by adding bearing lubrication oil, observe the oil level should be at the oil center line, the lubricating oil should be promptly replaced or added. 3. Unscrew the arc gear pump head diversion plug, water diversion (or pulp). 4. Close the arc gear pump outlet valve and outlet pressure gauge and import vacuum gauge. 5. Jog the circular gear pump motor to see if the motor is steered correctly. 6. Start arc gear pump motor, arc gear pump when normal operation, open the outlet pressure gauge and inlet vacuum pump, depending on their display of appropriate pressure, and gradually open the valve, while checking the motor load conditions.