（1） Start up
(1) When the pump is used in places with suction, that is, when the inlet is under negative pressure, it should first stop filling the inlet path with water and exhaust or use a vacuum pump to divert water, so that the entire pump and inlet pipeline are filled with water. Pay attention to the sealing of the inlet pipeline, and there should be no air leakage.
(2) Close the gate valve and pressure gauge plug on the outlet pipe to reduce the starting current.
(3) Rotate the rotor a few times by hand to make the bearings smooth, and check whether the impeller and sealing ring inside the pump are rubbing against each other. If they cannot rotate, do not start until the cause of the problem is identified.
(4) Test start, the motor direction should be different from the arrow on the pump, open the pressure gauge plug
（2） Operation
(1) When the pump is running, it is necessary to pay attention to the instrument readings and try to operate the pump near the flow head specified on the nameplate, to prevent high flow operation.
(2) Regularly check that the motor current value should not exceed the rated current.
(3) The bearing temperature of the pump shall not exceed 75 ℃ and shall not exceed the external temperature of 35 ℃.
(4) Wear and tear on vulnerable parts should not be replaced in a timely manner.
(5) If any abnormal phenomenon is found, immediately stop the machine and check the cause.
（3） Parking
(1) Close the gate valve on the water outlet pipeline and close the vacuum gauge plug.
(2) Stop the motor and then close the pressure gauge plug.
(3) If there is a cold winter season, the liquid in the pump should be drained to avoid freezing and cracking.
(4) If the pump is not used for a long time, it should be disassembled, cleaned and oiled, and properly stored.