The first step in inspecting the vortex blower is its appearance and structure, a fundamental acceptance test before equipment arrival and commissioning. The inspection involves a comprehensive examination of the blower's aluminum alloy casing, inlet and outlet ports, protective cover, and support structure. The casing should be free of defects such as deformation, cracks, sand holes, and dents. The surface coating and oxide protective layer should be complete and uniform, without peeling or rust. The impeller should be inspected for appearance integrity, with blades free of deformation, damage, dust, and debris, and with uniform blade curvature and spacing. A mechanical test is performed by manually rotating the impeller; rotation should be smooth and flexible, without jamming, friction noise, or axial and radial wobble. Simultaneously, bolts, fasteners, seals, junction boxes, and other accessories should be checked for completeness, proper assembly, and the overall structure conforming to factory and project acceptance standards.
After completing the appearance inspection, no-load and load operation performance tests are conducted to verify whether the blower's core operating parameters meet the standards. Under no-load conditions, connect the rated voltage power supply and start the fan for a no-load test. Continuously observe the equipment's operating status. The entire machine should exhibit no abnormal vibration, harsh noise, overheating, or unusual shaking. The impeller speed should be stable and the operation uniform. After passing the no-load test, conduct a load test. Connect the piping and operating equipment, and measure the fan's air pressure, negative pressure, air volume, and operating speed. The values must match the parameters on the equipment nameplate, with no pressure drop, unstable airflow, or air volume fluctuations. Monitor the motor temperature rise throughout the process. During continuous operation, the temperature rise should be stable, with no overheating, tripping, or overload, ensuring the equipment's performance meets design and usage requirements.
Finally, conduct electrical safety and sealing protection tests to ensure long-term safe and reliable operation. Use professional instruments to test the motor's insulation resistance and grounding resistance. Insulation values should meet specifications, windings should be free of moisture and leakage hazards, and the equipment grounding should be secure and effective, meeting electrical safety standards. Check that the wiring is neat, the insulation layer is intact and undamaged, and the terminals are secure without looseness or poor connections. For the fan sealing system, check that the inlet and outlet seals, shaft end oil seals, and housing joints are all in good condition with no air or oil leaks. For equipment equipped with silencers, filters, and pressure regulating valves, the auxiliary components must be tested simultaneously to ensure they function normally and work smoothly. Only after all tests are passed can the equipment be put into formal use. Any equipment that fails to meet the requirements must be rectified and re-inspected to prevent operation with defects.