Start-up and shutdown of the desulfurization liquid circulation pump

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At the start of work, with the assistance of electricians and fitters, check whether the foundation screws are loose and verify that all components are in good condition. 2 Check that there is sufficient lubricating oil, and close the pressure gauge control valve at the pump outlet. The 3-turn rotation of the pump should proceed smoothly; open the cooling water valve of the pump and inform the substation to supply power. 4. Open the valve of the inlet pipe to fill the inlet pipe and the pump body with water, thereby expelling all air. 5 Once everything is ready, close the switch to start the pump, slowly open the outlet valve, then open the pressure gauge control valve to adjust the pressure and flow rate to the specified values. 6 After starting the pump, carefully observe its operation; if any abnormalities are detected, address them promptly or switch to the backup pump. Shut down: Close the outlet valve of Pump 1. 2. Turn off the pump by closing the switch. 3 Close the inlet valve of the pump, and close the cooling water valve of the pump. 4. During winter or when the pump is not in use for an extended period, drain the liquid inside the pump.