Question about Rainbow E series Canister Wet/Dry Vacuum

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Water blowing out of rear filter

In regards to your question the water was not over the fill line.

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  • made4 Aug 11, 2008

    we replaced a new filter and now its blowing out water from it and i dont know what u mean by cone shaped filter to me it loooks rectangular with an oval opening

  • made4 Aug 12, 2008

    I managed to figure it out what i did i took out the water seperator and it was clogged so i cleaned it out that resolved the problem buts thanks for all your help.

  • Tim Babcock
    Tim Babcock May 11, 2010

    Is the cone shaped filter attached to the bottom of the Rainbow?

  • Tim Babcock
    Tim Babcock May 11, 2010

    Is the filter installed on the machine above the water tank?



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Unless the design has changed, there should be a cone shaped filter with slots around the sides of it. It's secured to a brass bolt in the center of the Rainbow above the motor. The filter is used to keep water out of the motor. If it isn't attached it can blow water out of the secondary filter as well as the exhaust port. It can ruin the motor in some cases as well.

It shouldn't be operated without it being secured to the base of the Rainbow.

We used to call it a filter but what it is its a water serperator. It looks likes this:

Posted on Aug 11, 2008

  • Tim Babcock
    Tim Babcock Aug 11, 2008

    Filters are misleading on this machine. They were originally designed to use the water tray as the filter but the industry called them on that especially since it was blowing dirt and dust out of the exhaust. Thats how you end up with hepa filters on the rainbow.

    Thats is why they used to call the water seperator the filter.

  • Tim Babcock
    Tim Babcock Aug 12, 2008

    You have to clean it with a toothbrush all the time otherwise it will spray all over the place.



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noavatar_s.gif xpinto
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I wasted a lot of time following the expert advice to repair my unit by taking the cover off of the main unit and using compressed air to blow out the lines. The problem turned out to be in the lower panel of the handle (4 screws to remove). The heater is a large block of aluminum with a stainless cover held on by screws. The lower nozzle of the heater was blocked by water/soap reacting with the aluminum while in storage. Blowing out the lines as recommended with air compressor just warped the stainless cover resulting in time spent flattening this back into shape.

I would recommend the following steps:
1. Make sure that fluid levels are up in both the supply water bladder and the soap dispenser.
2. Pry off the left side access cover and ensure the pump drive belt is still in position. Switch the unit on and see that the pump is spinning.
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4. Unplug the electric power. Remove the four screws and remove the lower handle access cover (with the red light in it).
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6. Disconnect the line from the soap activation switch (pliers on the squeeze hose clamp) feeding the heater (large aluminum block). Blow air (with your mouth NOT the air compressor) into this line and see if fluid movement is observed in the clear plastic lines. A little tentative about soap in your mouth, use a turkey baster filled with water). I saw no movement of liquid. Nozzle exiting the heater blocked.
7. Remove this hose and use a small drill bit to twist the debris loose. You may elect to remove the heater shinny cover for better access. Gaskets are reusable. Blow thru the hoses again to assure blockage cleared.
8. Button unit up.
9. With the clear bezel off and the red rotor exposed, plug unit in, soap and water supplies in place, switch on power and pull soap trigger. Should see vertical stream. Mine was about 5 inches initially then jumped to about 10 inches high. Knew blockage was cleared.
10. During shampoo operation if soap stops (red impeller stops spinning) first check fluid levels and fill. That doesn't work, I unscrewed the clear bezel and pulled the soap trigger with the unit switched on. Less than a second vertical stream appeared every time.
11. Now you know how to fix and achieve continuous operation.
12. The unit must be thorougly cleaned before putting it away for storage to prevent the reoccurance of the blockage in the heater. After following the manufacturer's instructions, by flushing (operating the unit) with clear water in the bladder and the soap dispenser, I did one final thing. By removing the fresh water storage/collection plastic container, a black round fitting is exposed that channels the water from the bladder into the spray system. I used a length of automotive heater hose that was the same diameter as the seal on this fitting (turkey baster with bulb off will work) and blew hard while the unit was switched on and the clear bezel was off. One last big blast of water spewed from the unit. This cleared all the lines from the bladder through the pump, switch, and heater and blows it out just prior to the spray nozzles.

This is long but specific.

Not so technical, take each step as presented.

Good luck.
Plano Tx

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