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Haha, there were originally more than 20 channels, but they are basically the same. 1. How to start an ordinary centrifugal pump? 1. Wear the correct labor protection supplies and a wrench with f. 2. Confirm that the pump's mechanical, electrical, and instrument conditions are met. The lubricating oil level of the pump is normal. If there is sealing water and cooling water, confirm that it is in normal use. Confirm that the outlet valve of the pump is closed, open the inlet valve, and enter the pump. Check the outlet pressure root valve and the outlet (back-leaching) exhaust valve, and confirm that the inlet pipeline is unobstructed. 3. Close the outlet back-leaching, and close the exhaust valve after cranking to exhaust. 4. Start the pump on site or centrally, and slowly open the outlet valve of the pump. 2. How to reverse the centrifugal pump? 1. Wear the correct labor protection supplies and bring an F wrench. 2. Close the outlet valve of the backup pump, confirm that the lubricating oil level is normal, and if there is cooling water and sealing water, put it into use. Open the inlet valve and the outlet (backwash) exhaust valve, crank the exhaust valve, and after the cranking is completed, start the pump on site or centrally. 3. After the backup pump is running normally, slowly open the outlet valve of the backup pump, and at the same time, turn it down until it closes the outlet valve of the pump to be stopped, and adjust the outlet valve of the backup pump to the required flow rate. 3. How to prepare a self-starting pump? 1. Wear the correct labor protection supplies and bring an F wrench. 2. Close the outlet valve of the pump to be started, confirm that the lubricating oil level is normal, and that cooling water and sealing water are available. Open the inlet valve and outlet (backwash) exhaust valve, as well as the inlet and outlet pressure root valves, crank the pump to exhaust. After cranking, open the pump on site or central control, slowly open the pump outlet valve, confirm that the pump is running normally, close the pump outlet valve, and stop the pump on site or central control. 3. Continue to open the outlet valve of the pump and turn the pump into automatic mode in the central control. 4. What are the key points to confirm before starting the plunger pump? 1. Wear labor protection supplies and bring an F wrench; 2. Confirm whether the mechanical and electrical instruments are fully prepared. 3. Turn the plunger pump to exhaust, confirm that the inlet and outlet valves are open before starting, and start on site. 5. Confirmation before starting the water ring vacuum pump and how to start it? 1. Wear the correct labor protection supplies and a wrench with f. 2. Confirm that the pump's mechanical, electrical, and instrument conditions are met, and that the pump can be turned flexibly. Open the manual valve for circulating water to inject water into the vacuum pump. After the pump overflows, start the pump on site. When the pump is running normally, manually open the inlet valve of the pump. 6. How to hand over the process of a centrifugal pump that needs to be repaired due to malfunction? 1. Wear the correct labor protection supplies and a wrench with F. 2. First close the outlet valve of the valve pump, notify the central control or on-site to stop the pump, close the inlet valve of the pump, close the sealing water and circulating water, open the inlet and outlet of the pump for pouring, relieve pressure on the pump and pipelines, cool down, and cut off the power of the pump motor. 7. How to put the on-site liquid level meter into use? 1. Wear labor protection supplies and bring an F wrench; 2. Confirm that the gas phase root valve of the liquid level gauge is closed, slightly open the liquid phase root valve, and preheat or precool the liquid level gauge. 3. Open the bottom pouring of the liquid level gauge to rinse the liquid level gauge. After passing the test, close the pouring and fully open the liquid phase root valve. Slowly open the gas phase root valve of the liquid level gauge to equalize the pressure of the gas phase in the container and then fully open it. 8. How to replace and put the pressure gauge of pipelines and equipment into use? 1. Wear labor protection supplies and bring an F wrench; 2. Close the root valve of the pressure gauge, remove the old pressure gauge, and prepare to replace it. 3. Replace with a new calibrated pressure gauge, and slowly open the root valve of the new pressure gauge. The above is not complete for use. Please add more.