4 points that need to be paid attention to during the use of solar water pumps

Solar water pumps are also one of the common water pumps in our daily life. Today, let's take a look at the 4 points that need to be paid attention to during the use of solar water pumps.

The four points that need to paid attention to during the use of solar water pumps are: 1. Avoid dry running, 2. Water pipe antifreeze, 3. Cable waterproof, 4. Sand prevention.

1. Avoid dry running

When debugging, the dry running time of the pump shall not exceed 90S. If it exceeds 90S, the pump motor may have insulation damage due to excessive dry running temperature. During daily use, the water lwvel of the water source must not be lower than the pump inlet, and generally requires 30-50cm higher than the pump inlet. Inorder to prevent the water level from being lower than the pump inlet, a water level detection switch can be installed within 30-50cm above the pump inlet to detect the water level signal and send the signal to the solar controller in real time. When the pump is running, when the water level is too low, the solar controller can cut off the power in time to protect the motor and avoid dry running without water.

2. Water pipe antifreeze

In areas where the external temperature is too low, the water pipe needs to be buried to a depth of about 10cm below the freezing line. It is strictly forbidden to expose the pipeline to the air to prevent the water pipe from freezing and cracking; when the pump is running, try to discharge the water stored in the pipeline in time. There are two ways to complete the drainage function:

1) Install the artificial valve. Arrange operation and maintenance personnel to turn the valve regularly to drain water.

2)Install the pressure relief valve. Set the pressure of the water pipe. When the pressure is greater than the set value, the pressure relief valve will be automatically opened to drain water.

3) Drill holes in the non-frozen area of the pipeline. When the system is shut down, the excess water in the pipeline can be discharged from the small hole: pay attention to the opening direction of the small hole on the downstream side of the check valve.

3. Cable waterproof

The pump motor's own cable is generally short (easy to transport), so a cable connection is required in the consumer. With submersible pumps, the cable glands may be in water, so a watertight plastec seal is very important. We usually use professional cable joints and plactic sealing tubes as cable connections. In some places with strict requirements, it is necessary to use a special solar water pump juction box for connection;

4. Sand prevention

Solid sand or stone can cause serious damage to the pump and can greatly reduce the service life of the pump. Therefore, it is necessary to avoid inhaling grit. Convey anti-sand filter at water pump inlet. In particular, water sources with high sand content must be equipped with filters; install filter screens. When the water pump is installed in a river, a filter screen should be installed around the water pump to prevent debris from entering the suction prot due to the suction of the water pump.

The above are the 4 porint that need to be paid attention to in the use of solar water pumps. Doing preventive protection, the actual service life of solar water pumps will be extended a lot.

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