1. The submersible pump should be checked for insulation resistance every time (approximately 1000h) before use. It should be no less than 0.5MΩ. If it does not meet the requirements, it should be dried. 2. Before use, check cables, switches, electric shock protectors, etc. Electrical appliances such as switches should work normally, the cables are not damaged, and pay attention to carefully identify the cable. The yellow and green two-color wires are ground wires to prevent leakage and electric shock accidents. 3. Regularly check the water drain hole and oil drain hole. Tighten if there is no abnormality. 4. When the submersible pump enters or exits the water, the TSWA horizontal multistage pump must first cut off the power supply, and then pull the rope tied to the ring, which can definitely pull the cable. 5. The submersible pump cannot be buried in the river mud. If there are many debris in the water, the submersible pump should be placed in the basket or basket, and then the basket or basket is placed in the water. 6. When the submersible pump is tested outside the water (for example, to determine the steering), it should not exceed 5 minutes to prevent the motor from burning out. 7. After working for 300h, the submersible pump should be tested for sensitive water. If the discharged water or oil-water mixture is less than 25mL, it can be used continuously, otherwise it is necessary to check whether the lumps and rubber seals are damaged. Submersible pump leakage failure Submersible pump water leakage failures are mostly caused by aging and wear of sealing devices. In addition to replacing new seals, the following simple elimination methods can also be adopted. The submersible pump seal ring loses its elasticity due to long-term use. At this time, the seal ring can be taken out, and then a piece of paper or cloth with a thickness of 0.3 to 0.5 mm is cut into a slightly larger pad than the original seal ring and installed in the groove. Install the original seal. The rubber seal ring in the nylon seal seat of the submersible pump is worn out. You can take out the seal ring and change the position to install it. If the fastening spring on the seal ring loses its elasticity or breaks, you can remove the spring and tie it with a steel wire or iron wire of an appropriate diameter tight. If the first sealing ring of the submersible pump is seriously worn, the nylon sealing ring can be taken out, and then coated with butter asbestos rope, wrapped around the stainless steel sleeve to fill it slightly higher than the original nylon seat, then filled with butter, and then tighten the nylon seat with bolts Compaction. The seal ring between the submersible pump seal box and the cast iron loses its elasticity. You can remove the seal ring from the cast iron groove, find a piece of cardboard with a thickness of 0.6 to 1 mm and cut it to the same size, place it in the groove, and then seal the seal Put in the circle. If the rubber sealing ring of the submersible pump oil hole is damaged, you can find a piece of tape and cut it into a hole slightly larger than the bolt, and then add a flat pad on the top to fit the bolt into the oil inlet hole. Floating Shaver,Men Trimmer Shaver Rechargeable,Electric Beard Shaver,Professional Fabric Shavers ZHEJIANG SHENGFA ELECTRIC APPLIAMNCES CO.,LTD , https://www.sfelectricappliances.com
7 points of operation and maintenance of submersible pumps