Digital BW, The Print

Hi ..

I need an advice before switching the inkset in an Epson 7500 
from the standard Epson inkset to PiezoTone WN.

I have bought a set of MIS Cleaning Cartridges.

Anything special to take care of? Should I do a 'transportation 
dump' (HOW?) or could someone explain the procedure to me ?

Thanks for any help!

Bjorn