Digital BW, The Print

Hi-

Am just now switching to B&W on 2200.  Have bought cleaning carts and am wondering if 
anyone has experience with cleaning out colors.  Can I use the old color again later(tho am 
theoretically over color) Do I save the color carts for another use? Do I use a    cleaning cart in 
each position? 
Thanks for your input,
Annabelle