What are the steps to start a centrifugal pump? What issues should be noted?

Haha, I know. First, supply power, open the inlet valve, slightly open the outlet valve, and turn the shaft. Emitted gases. Adjust the opening degree of the outlet valve. Pay attention to the rotation direction

Preparations before startup: 1. Verify the correct rotation direction of the motor when the coupling is not connected (for the first time or after the motor’s wiring has been changed). 2. Check the oil level and supply in the pump’s bearing box; if the quality of the oil is inadequate, it should be drained, flushed, and replaced with new oil. 3. Close the outlet valve and fill the pump. Open the exhaust valve and close the residue discharge hole; fully open the inlet valve. Remove the entrained air. Close the exhaust valve when there are no bubbles in the flowing medium. 4. If equipped with a minimum flow line/balancing line, open and lock the valve. 5. Start the cooling water and other auxiliary systems, and check the switch devices related to the pumps and motors. Open the valve to allow the fluid to pass through. 6. Check to ensure that all seal flushing lines have been thoroughly depressurized. Start up 1: Slightly open the outlet valve. 2. Start the motor. 3. Once the pressure has stabilized, slowly open the outlet valve (over a period of no more than 2 minutes) until the pressure drops to the operating level. Conduct operational checks: 1. Head – When the operating speed is reached, there should be pressure at the pump’s outlet; if not, stop the pump immediately. 2. The current must not exceed the full-load current specified on the motor’s nameplate. 3. Vibration: Understand the vibration limits; if there is a significant excess, stop the machine. 4. Leakage: Any leakage indicates a problem. Pay special attention to the mechanical seal area. 5. Temperature: Understand the maximum temperature limit of the bearing. If exceeded, stop the vehicle. 6. Filter pressure difference: When the pressure difference increases, the pump should be stopped promptly for cleaning.