I think you meant to say 12 Amp. Steam Vac...you do plug it into the wall don't you?
Kidding aside, what usually causes these machines to loose suction is either a missing part or a container not seated correctly. Considering what model you have, I would say you don't have your recovery tank lid on correctly, OR..the screen in the container itself is REALLY blocked with lint/ dirt. Might as well take your lower tank to the sink and give it a good look over and cleaning. Also, another way to loose suction is by letting the lower tank get too full, causing the float to come up and block the air passage. If you need any additional help, you can e-mail me at arctic@worldlnx.net.
Help Around the House, May 2006