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Trouble with vacuum suction

I have a Thermax AF vacuum/steam cleaner. I purchased it in 1994. The problem is, when I put the recovery tank in the machine and then put the dome lid on and turn on the vacuum switch there isn't any suction. Normally if you put your hand on the hole in the center of the dome lid you can feel immediate and powerful suction. The hole in the dome lid is where the flexible hose is attached to the unit. If I take out the recovery tank and turn the machine on I can feel the suction through the hole in the bottom where the recovery tank sits. I'm not sure what the actual problem is. The recovery tank seats properly when I put it in and turn it until it drops/locks into place. The dome lid also has both rubber gasket seals so I know that isn't the problem. I did recently have to have the cord replaced. Could the repair person have done something to affect the vaccums suction? Any help would be greatly appreciated. Thanks, Kelli

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  • fabricfreak Jan 19, 2008

    Thanks for the reply LizDahl. I did check the hose that attaches to the hold in the center of the dome lid. The problem seems to be with the base unit itself without any attachments on it. You can use the base unit by itself to filter the air in your whole house. You just add the required amount of water to the recovery tank and put the dome lid on and turn the machine on. It's supposed to pull or suck air through the center hole and filter it. That is where the problem lies. It's not creating any suction when I put the recovery tank and lid on. Thanks again. I appreciate the help.

  • sandy mccain
    sandy mccain Jul 12, 2015

    I have the same problem with my thermax AF do you know what is causing the problem



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Check and see if there is a blockage.

Posted on Jan 19, 2008


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