have got the external V2 dont use it alot never used it to dry clean but worth its weight when you get to a rented flat with no hot water, or when the owner insists on steam cleaned carpets due to pets etc (use with caution). better than the internal one has you can have the V2 heating the solution hose water while the internal heater is heating the tank up. With the internal V2 you only get one or the other. Also dont go for the high spec Vac motors, mine were unreliable and kept blowing (3 times under warrenty) also melted the plug, since I changed vac 1 to normal spec been much better, and you can unplug it without burning your hand. Regards setting up clean waste tank out first to get rid of all water, pre vac curtains first while solvent is warming up. dry clean then empty and collect sovent, then wet clean last.
Doesnt take long 5 or 10 mins,