I wanted to share my experience with this machine, so here we go! (When I say old machine i mean my 500psi sandia sniper)
1. Solution pump 500 is a unloader versus a regulator on my sandia sniper(i believe thats the right term). When you let go of the trigger it goes back to 0 and when the trigger is pulled it goes to the psi that i set. It feels like it has more pressure than it reads on the gauge.
2. Vaccum.... the 2 8.4 motors IMO is the closet that you can get to truckmount performance in a portable. 1 8.4 motor on this machine is stronger than both of 5.7 motors on my old machine combined. When i turn on both motors i get a whistle from the wand. Excellent water recovery. I have used it with and without my mytee lint hog inline filter doesn't feel like any loss in suction but i only use 50ft of 2in hose and a 2in 4 jet wand. The lint hog catches alot of carpet fuzz and pet hair, even after a good vacuuming. The only prob im having is the vaccum motors overheating. I did get the machine used but in like new condition no visible signs of wear on the motors, they look brand new. There isnt alot of airflow in the chassis except one small computer exhaust fan on the back. If you want to use a hydromaster dm3 upholstery wand you need to use a vac relief and only one motor of not the water doesnt flow correctly.
3. APO....i havent used this yet but i think its 18.3 gpm and you have to use a inline filter so it doesnt get clogged up
Conclusion: Overall im happy with the machine, just use it in a well ventilated area so it doesnt over heat. I may try to change out the motors of it persist
