1. Before maintenance and repair, ensure that the power is turned off and the liquid remaining in the pump body is clean and the entrance is closed. Maintenance personnel should wear protective clothing and protective masks, safety shoes and socks.

    2. Check the entrance and exit regularly to prevent the motor from idling.

    3. The motor is engaged with the pump and must be calibrated accurately so that the motor is pumped in the same line.

    4. Shaft cover is fixed on the rear cover, when the rear cover is locked on the foot, must be in the center of the axis.

    5. Impeller fixed screw clockwise direction to impeller lock, impeller and the closure between the cover must be about 1-1.5mm gap, the gap is too small will impeller wear.

    6. When the rear cover is locked with the main body, pay attention to the position of the main body O ring to be correct, do not crush the O ring.

    7. Entrance should be equipped with Ford where, and to prevent the liquid in the instantaneous return when the impact of self-absorption capacity.