A compressor equipment failure occurs when routine maintenance testing, it is not necessary to carry out routine checks in after the disk drive without exception after the disintegration of the branch has a thrust bearing, gear compressor body and the growth of inter-connected rachis, support bearings, inspection, found no foreign substances, degreasing tile top and bottom a little wear scar, the bearing interval normal, with maintenance at the same value.

Good concentricity measured between Suzhou pump gearbox high speed shaft and compressor rotor concentricity is: runout of 0.018mm (designed to allow the value of 0.02mm or less), the end face of the horizontal coupling mouth of 0.01mm , vertical mouth as 0.02mm (design allowable value ≤0.02mm).

But gas seal in varying degrees of radial grinding marks, in addition to the radially outer wear scar, as well as axial pump Shandong wear scar, where seven main seal tooth has five axial wear volume of 0.4 ~ 0.6mm, only close to 6 impeller at two main gear axial wear lighter, and have polished traces journal.

Through the data collection and analysis, that the vibration caused by a foreign body is not a card, but concentricity and bearing gap is too large caused by the inspection no loose coupling, and finally open the lid to check the large air compressor, rotor wheel and chassis Non-contact separator wear marks.