Precautions for Self-Priming Pumps

1. To prevent electric shock, appropriate safety measures-such as a residual current circuit breaker (RCCB) or an earth leakage protector-must be installed, and reliable grounding must be ensured.
2.The operating voltage must remain within the range of +5% to -12% of the rated voltage; otherwise, the motor's service life may be shortened, or it may burn out. If the pump is located far from the power source, the power supply cables should be sufficiently thick to prevent voltage drop, which could otherwise prevent the pump from operating.
3.Turn on the power switch and let the pump run idle for approximately 2 minutes to verify that starting and operation are normal and that the rotation direction is correct.
4.Secure the pump body firmly. Connect the inlet to the foot valve using steel piping or rubber hose (ensure the hose is not too soft, to avoid collapse under suction). The foot valve must be positioned vertically and at least 30 cm above the bottom of the water source to prevent the intake of silt or sand.
5.For clear-water centrifugal pumps and automatic clear-water pumps, fill the reservoir with water before the initial use. Once primed, subsequent operations will not require refilling.
6.For self-priming clear-water pumps and automatic self-priming clear-water pumps, fill the reservoir with water before the initial use. Once primed, subsequent operations will not require refilling.
7.During operation, keep the motor dry and monitor the water level to ensure the foot valve remains submerged. When the ambient temperature drops below 4°C, take anti-freezing measures to prevent the pump body from cracking due to freezing.
8.If the pump is to remain idle for an extended period, drain all water from the pump (including the reservoir for self-priming and automatic models). Clean the main components, apply anti-rust oil, and store the unit in a well-ventilated, dry place.