10 basic safety operating procedures for submersible pumps

Submersible pumps are a common type of pump in our daily life. They are used directly after purchase, while ignoring safety issues. Today, let’s learn about the 10 basic safety operating procedures of submersible pumps:

1. The submersible pump should be installed in a strong basket, then put into the water, or put a strong protective net around the pump. The pump body should stand upright in the water, and the water depth is not less than 0.5m. If it is used in water containing sediment, please purchase a special pump;

2. Before the power is disconnected, it is forbidden to pull the cable or the outlet pipe, let alone put the submersible pump into the water or lift it out of the water when it is charged.

3. The submersible pump should be equipped with a protection device for zero connection or leakage protection. No one or livestock can enter the water surface within 30m around the pump.

4. The pre-start inspection items should meet the following requirements:

1) The water pipe is firmly tied;

2) Screw plugs such as deflation, water discharge and oil injection are tightened;

3) The impeller and water inlet section are free of sundries;

4) The cable insulation is good.

5. When the power supply is connected, a test run should be performed first, and the rotation direction should be checked and confirmed to be correct. The running time outside the water should not exceed 5 hours;

6. Always observe the water level change. The distance from the center of the impeller to the horizontal should be between 0.5 and 3.0m. The pump body must not fall into the sludge or come out of the water. The cable must not rub against the wall to prevent cable leakage and short circuit;

7. After using the new pump or pro-sealing ring for 50 hours, the water plug should be opened to check the water and oil leakage. When the leakage exceeds 5ml, a 0.2mpa air pressure test should be carried out to find out the cause and eliminate it, and then check it once a month. When the leakage does not exceed 25ml, it can continue to be used. After inspection, the specified lubricating oil should be replaced;

8. Before using the oil-immersed submersible pump for the first time after maintenance, a 0.2MPa air pressure test should be carried out to check that there is no leakage in each part, and then add lubricating oil to the lower casing;

9. When the temperature drops below 0°C, after stopping the operation, the submersible pump should be taken out of the water and dried and stored indoors;

10. The insulation resistance of the motor stator winding should be measured once a week, and its value must not drop.

DC micro-pumps are widely used in automation equipment water circulation, solar energy products, indoor and outdoor small fountains, fully automatic coffee machines, desktop fountains, aquarium fish tanks, miniature water landscapes and other handicrafts, village water supply, pasture water supply, water supply in remote areas, household water supply, garden irrigation , mobile air conditioners, refrigerators, foot baths, juice machines and other refrigeration industrial equipment, automotive supplies, etc.

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