Do not mix the positive (+) and negative (-) connection. The pump is submersible pump, it must be full submerged in the water.Do not use the pump over max lift. The water pump cannot work long without water. Cable requirements: when the length of cable is greater than 30 meters, it is recommended to use 6 square or 10 square pure copper cables. Water requirement: please do not select diameter less than 32 mm Pipe connecting pumps; Pipe blockage is forbidden bending, such force would reduce pipe outlet diameter, then it will cause the pump working current too high and motor damage. Water pumps have a wide working voltage: the voltage range of a 48v water pump is 38v-90v, and the optimal working voltage is about 60v. Built-in MPPT controller to make full use of solar energy. The pump automatically stops working when the voltage is too high or too low; Then check every 5 minutes. The water pump can connect directly to the solar panel in the sunlight without connecting the battery. 1pc Solar powered water pump. Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount.
Due to time zones, our reply to your questions may not be immediately. If it's non-workdays, please kindly be patient and wait till Monday. This item is in the category "Home & Garden\Home Improvement\Plumbing & Fixtures\Pumps & Water Filtration Systems\Pumps". The seller is "ahairrain" and is located in this country: US. This item can be shipped to United States.