compressor amonia high vibration

Can you mark your measurement points on the compressor picture? Do you have any history of measurements (trend, cascade)? Meanwhile I give a few notes about the motor side. Vibration level is raised but seems not critical. Levels are probably higher due to residual unbalance. At the NDE motor side you noticed harmonics of 100,3 Hz. You suspect BSF which could be the case but I more suspect the 2xLF which is something very common at NDE side of motors. Higher line resolution could give you more strict answer, there is also so little difference from 100,0 to 100,3 Hz it could easily be the difference from input and real rpm. However the amplitudes are not critical at the moment so I would evaluate the motor condition as non-critical. 

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