Disklavier

My pianoshop just called me before delivery of my new DU1A upright 
disklavier, to tell Yamaha sees a problem in installing the Damp 
Chaser unit because of the electronics.

Is there a way in which I can mount this safely? The painoshop tells 
me when I mount it on the backside (as I read somewhere is possible 
solution, but where is allready located something like a power-
converter) this will influence the soundboard more than you would 
whish. Does someone have a solution?

Hope to get some good suggestions. Thanks
Greetings,
Paul de Jong