1.Start the motor, the pressure on the pipeline to be discharged to the rated value and stable after slowly open the outlet valve of the pump, adjust to the required conditions. Idle time should not be too long to avoid "pump, sealing ring dry friction heat - like, with no more than 1 to 2min.
2.After running the centrifugal pump, the pump must be observed at any time to observe the vacuum gauge, pressure gauge and electrical system of the current table, if there is an exception should be timely to determine the cause of the cause, and take appropriate measures. If not effective, should stop the pump for further inspection. At the same time, should pay attention to the seal leakage observation, monitoring the operation is stable, there is abnormal sound.
3.Switch the pump the operation steps, according to the method of starting the pump start standby pump, slowly open the outlet valve of the standby pump, and keep a short time two pumps in parallel operation, to be the first pump outlet valve closed slowly after a smooth, then stop the pump. Switch operation of the pump, the valve opening or closing can not be too fast, so as not to cause water hammer.
4.Stop the pump first slowly close the outlet valve, and then cut off the power supply, then close the inlet valve; the pump body temperature dropped to room temperature, close the cooling water and seal valves; finally do a good job running records.
