Problems indicated by the TRG gauge of the shielded pump
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This post was last edited by —Lantian— on 2011-3-4 21:44. The pointer of the diaphragm pump indicating the red zone is due to bearing wear and excessive clearance. But why is it still in the yellow zone after replacing the bearings? How can this be resolved?
It might be due to an excessive radial clearance in the bearing, or issues with installation
The bearing is fixed in place; please explain in detail how to install it
Actually, there are two possible reasons why the TRG gauge of the shielded pump shows the yellow zone: 1: Electrical fault； 2: Mechanical failure, which includes two scenarios. (1): The radial clearance of the new bearing is indeed significantly out of tolerance ； (2) The clearance between the bearing housing and the casing is severely out of spec; regardless of how good the bearing clearance may be, the bearing housing already causes an excessive deviation between the axis and the centerline of the casing. The poster can check the fit clearance between the bearing housing and the casing!
Is the impeller also worn? The rotor shaft needs to be aligned during assembly.
That’s exactly the problem with our shielded pumps. But how can we determine whether a TRG module is good or not?
That’s exactly the problem with our shielded pumps. But how can we determine whether a TRG module is good or not?
TRG is an electromagnetic type bearing detector; newly installed bearings fall in the yellow zone: 1, installation issue; 2, the shaft is slightly bent.
Was the shaft checked for any issues before installation?
Supporting the argument for the 4th floor! ~~~