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. Shielded pump – I. Operating procedures A. Starting the pump 1. Check whether all fastening components are secure, whether the pressure gauge and cooling water are functioning properly, and whether the outlet valve and the pump’s vent valve are closed with no leaks； 2. Slowly open the inlet valve, and check for any leaks; if any are found, contact someone to address them ； 3. Open the exhaust valve and the two exhaust valves on the pump itself, and slowly release the gas, being careful to avoid burns. Continue this process several times until it is confirmed that no gas remains in the system ； 4. Turn on the power supply, and observe the readings on the pressure gauge and TRG on the discharge side; if the direction is incorrect, contact the relevant personnel for handling before proceeding further ； 5. When the pressure and operating conditions are normal, slowly open the valve on the discharge side until the specified pressure value is reached ； 6. Check again the pressure gauge readings, the TRG indication, the operating noise and vibration for any abnormalities, as well as the condition of the cooling water. B. Stop or switch the pump: 1. Start the standby pump following the startup procedure, then slowly close the outlet valve, while monitoring the operation of the standby pump to ensure there are no abnormalities, and finally close the outlet valve completely. 2. Press the stop button to shut down the pump ； 3. Close the outlet valve ； 4. Stop the cooling water. II. Daily Maintenance 1. Regularly check the flow of cooling water to ensure that the surface temperature of the pump does not exceed the specified value; at the same time, pay attention to conserving water ； 2. Regularly check the TRG indicator; take prompt action if any abnormalities occur ； 3. Check the pressure indication and the condition of the inlet filter; clean it if necessary ； 4. Check for abnormalities such as operating noises, vibrations, and leaks, and address them ； 5. Adjust the outlet valve to ensure it does not operate under overload conditions ； 6. For the troubleshooting of shielded pumps, refer to the TRG instructions as well as the information on the faults of shielded pumps, their causes, and solutions ； 7. When the pump is not in use for an extended period, its cooling water and the medium inside it should be thoroughly flushed to prevent corrosion and freezing damage.