Question about Vacuums
I have a Bissell Model 7901, which I have had for several years now. I have used it quite a bit. When I used it last time, it kinda sprayed from the handheld tool, but did not spray near the spinning brushes on the bottom at all. I am very handy, and opened up the unit (it was unplugged, of course). I discovered that the pump, though still functioning, was difficult to turn, and it was going to break at any given moment. I ordered a new pump from Hesco. I also discovered that the heater unit was nearly clogged up. I carefully removed it (labeled the hoses, etc), removed the cover, and cleaned it out. I checked each and every hose to make sure that it was not clogged. The belts are good, and the new pump that I installed turns fine. I am 100% certain that the hoses were reconnected properly, and I have not found any leaks whatsoever. Upon reassembly, I am careful not not crimp any of the hoses.
I filled both tanks with water, and made sure that the seals are okay. The water does not come out when I turn the thing on...no matter what I do with the switches or knobs...The red cross spinny thing moves a little bit, but just barely. It seems that a bit of air is blowing on the cross, but it barely moves.
I am very frustrated with this. I have taken this thing apart, and put it back together it seems like a hundred times. I can fix all kinds of stuff, but with this thing I seem to have met my match.
I have reviewed your previous answers to other people, and kept your suggestions in mind when I am working on this thing.
What could be the problem? In other words, what am I doing wrong?
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Posted on Jan 02, 2017
When was the last time you changed the flat belt? Even if it isn't broken it could be so stretched out that when the brush hits the floor it slows or stops the pump from spraying. If its a new belt then and your sure there arent any clog's that usually means the pump is bad. Also if youve ever used anything other than bissell shampoo in the machine it could have ruined the pump as well.
Posted on Sep 16, 2009
I had two problems. No water was coming out of the main unit (it was working fine via the powerbrush) and the flow indicator wasn't spinning. Because I'm out of warranty, I did two things (after trying all the options that were posted).
1. Removed the top of the main unit. There are 4 screws on the top back lid. Once you remove those, lift the back up towards the front. The front is snapped under the bottom casing. It should come up with a little pressure, but don't force it. With the top lid removed, I had to clean several of the rubber hosing by removing them and running under warm water. I actually used a long wooden skewer to scrape the grime in the tube. Make sure you do one tube at a time and replace in as it was before moving to the next one. While you are at it, make sure the 2 sprayers on the front are clean as well. They are either orange or yellow and rubber tubes also feed into the sprayers. After I finished, I replaced the lid. It it still wasn't working, so I tried step 2.
2. Remove the hose assembly from the main handle. 2 screws and 2 bolds (don't lose the nuts from the back). Once the hose assembly has been removed, then lift off the top part of the handle. Once the top is off you should be able to open the front lower part of the handle exposing the additional electrical and more rubber tubbing. In the middle is rectangular looking object. That is the water heater. If you just ran the vacuum, do NOT touch this as it will be hot. Wait for it to cool. check the connections of the rubber tubing and make sure they are clean. In my case the tube going in to the heater was all blocked up with cleaner solution. Once I cleaned that up an reassembled in reverse order, the unit worked fine.
Hope that helps you.
Posted on Jul 21, 2010
Here is a tip that will give you all the information you need to fix your BissellProheat Vacuum Problem.
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Posted on Sep 30, 2010
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