Fault 1: Abnormal vibration Step 4: Troubleshoot the air compressor Step 4: Troubleshoot the air compressor Second, the axial thrust is too large, and the axial displacement increases Step 4: Troubleshoot the air compressor Fault 3: The bearing temperature or bearing return temperature increases Step 4: Troubleshoot the air compressor Fault 4: Compressor surge Step 4: Troubleshoot the air compressor