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Message ID: 216     Entry time: Tue Nov 29 17:02:06 2016
Author: Gabriele 
Type: Facility 
Category: Noise hunting 
Subject: Suspending the roughing pump 

I suspended the roughing pump with four springs. The reduction of the 58 Hz peak is similar to what I got when the pump was sitting on a box. So most of the coupling is due to acousting noise.

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