
If your NAKAYAMATOOLS NP1180 Pro underwater irrigation pump is experiencing starting or stopping issues, here's how to troubleshoot, based on the user manual: First, check the power supply. Ensure the power cord and plug are undamaged and securely connected to a functioning power source. Next, address potential pressure-related issues. If the pump seems to be in a state of pressure , inspect pipes and the pump itself for blockages, and open the outlet valve to allow discharge and automatic restart. Also, consider the impeller. Inspect it for damage or obstructions, which may require professional maintenance. Overheating is another possibility. If the pump has overheated, let it cool down before restarting. Make sure the water and ambient temperatures are below 35°C. Finally, consider the internal pressure signal switch. If none of the above resolves the problem, consult with the maintenance department to diagnose and address any issues with this switch.


