Frequency Check between Structure and Paddle Mixer

Hi,

I really need you help on this problem.

We have a paddle mixer with Frequency at 1800rpm.

We have extended the existing structure to accomodate the paddle mixer.

Now we run a frequency check and compared it with the limits of 80%-120% of the equipment frequency.

Can anybody enlighten us if our understanding is correct and how to correct the failure.

Thanks in advance.

Paddle_Mixer_Frequency_Final.std

Paddle_Mixer_FrequencyCheck_Final.xlsx