Non negative pressure variable frequency water supply equipment - Post maintenance of non negative pressure variable frequency water supply equipment

Description :

Non negative pressure variable frequency water supply equipmentPost maintenance work: 1. Drain the remaining water in the pump and pipeline of the non negative pressure water supply equipment. 2. If disassembly is convenient, the water pump and pipeline of the non negative pressure water supply equipment can be removed and cleaned thoroughly. 3. If the variable frequency water pump and pipeline are not disassembled, the outlet should be sealed with a cover plate to prevent debris from entering. 4. Clean all screws and bolts with a wire brush and apply engine oil or soak them in diesel for storage. 5. Check whether there are cracks or small holes on the impeller, and whether the impeller fixing nut is loose. If it is damaged, it should be repaired or replaced. Check the clearance at the impeller wear reduction ring of the non negative pressure water supply equipment. If it exceeds the specified value, it should be repaired or replaced. 6. Check the ball bearings of the non negative pressure water supply equipment, and replace them if the inner and outer sleeves are worn, loose, the ball bearings are worn, or there are spots on the surface. Clean the bearings with gasoline or kerosene and apply butter for storage if they are still usable. Maintenance and upkeep of non negative pressure variable frequency water supply equipment: 1. Necessary measures should be taken to prevent equipment contamination and corrosion during long-term shutdown. Antifreezing and insulation measures should be taken during winter shutdown. 2. The bearings of the water pump should be refueled every 500 hours of operation. The sealing performance of the pipeline from the inlet of the water storage tank to the main outlet of the pneumatic water tank supplying water to the pipeline network, whether there is any leakage, and the water and gas stop of each valve should be kept in good condition regularly. 3. During operation, the bearing temperature should not exceed 75 degrees Celsius. Check the operation of the float and liquid level controller for automatic water supply, and clean and paint the water storage tank of the non negative pressure water supply equipment once a year. 4. The water pump should not operate for a long time with the outlet valve fully closed, nor should it operate at the hump in the performance curve, nor should it run without air. When the shaft seal adopts a disc root seal, a leakage of 10-20 drops/min is allowed. 5. The electrical control system of the non negative pressure water supply equipment should keep the electrical control cabinet (box) dry, avoid the environment of the electrical control system of the non negative pressure water supply equipment being humid and the relative temperature of the air being too high, otherwise it will cause corrosion and deformation of the parts, and also reduce the technical performance and service life of the electrical components.

　　The main application places of non negative pressure variable frequency water supply equipment are high-rise buildings, residential communities, villas, and other residential water use areas. 2. Daily water supply for enterprises, institutions, hotels, office buildings, department stores, large saunas, hospitals, schools, sports halls, golf courses, airports and other places. 3. Production water for manufacturing, washing equipment, food industry, factories, and mines. 4. The already built water tank can be supplied with non negative pressure water supply equipment and shared with the water tank to further save energy; 5. Transforming the existing pneumatic water supply equipment can fully utilize the existing pneumatic tanks; 6. Various circulation systems, intermediate booster pump stations in water plants; 7. Other: Renovation of old water tanks and other forms of water supply;

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• Non negative pressure variable frequency water supply equipment