Question about Rainbow Vacuums

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I have a SE Rainbow vaccuum cleaner (Model D4C) that I purchased new in 1986. Yes, it's 25 years old! With the exception of replacing the basin (which I dropped & broke), I have only had to replace the brush & belts on the power head. It was well worth the money. I was thinking about buying a new model, but after realizing the high cost, I'm leaning more toward just repairing the one I have. The problem I am currently experiencing is when I press the button to turn the unit on, the length of time it takes for it to come on is increasing more & more. The last time I used it, it took about 5 minutes! Could this be that the motor is shot or could this be the thermastat sensor? Thank you for any information you can provide me!

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  • RainVac - Rainbow Vacuum Specialists

    The carbon brushes in the motor could possibly be worn out and making very poor contact. We have repair service at your home the next day.http://www.rainvac.com/rainbow-vacuum-re...

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Two things to consider in this problem

1.the shafting and bushing of the motor check whether they are not worn out and misaligned you can replace them if they are broken .

2. The motor starting capacitor it is place under the power input of the motor replace it with the same rating and value...good luck let me know!

Posted on Apr 04, 2011

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Posted on Jan 02, 2017

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2 Answers

Will D4c se plug into D4c


The Rainbow D4, D4C and SE all are the same vacuum base, only changes were made to the nozzle. As long as the nozzle cord on your D4 has 2 prongs, not 3 prongs you can use the D4 nozzle that looks like This or the SE PE (SE Performance) Nozzle that looks This

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GoodVac.com
800-775-6586

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1 Answer

I just purchased a rainbow D4C, after purchasing i was told i should have purchased the SE model. whats the difference?


There is only one difference between the D4 and the D4 SE, which stands for D4 (Special Edition). It is the exhaust plug screws in on an SE and snaps in on a regular D4.

Then the SE-PE came along, which stands for (Special Edition-Performance Edition) which has a more powerful motor, with larger motor brushes, for more power and runs on 9.8 amps, where the regular SE and D4 run on 8.8 amps. It also has the newer PN-2 power nozzle, which is very much like the latest E and E2 series Rainbow vacuums, instead of the earlier rectangular ones, that have the bottom metal plate, which will rust. You can upgrade your D4 to one of these, though you will need the electric hose with gas pump style handle, with the built in power corn in it.

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1 Answer

What's the difference between the rainbow D4C SE and the D4C?


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1 Answer

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I have a d4c rainbow vacuum, need help replacing the electrical cord


There is no reset button, but some of those old switches are very touchy . . . if there was some  corrosion, you may not have a good contact (was enough of the new wire insulation stripped away, before putting it into the switch) . . . 
I prefer splicing, rather than going all the way to the switch  . . its just a matter of cutting out the old cord and splicing in the new cord in a convenient spot up in the motor compartment. . . a Rainbow purist would run the new cord all the way up into the power on/off rocker switch that's built into the top of the handle and then wire the new cord in there, directly at the switch . . . that way means no splicing . . . I've done it both ways, but I prefer to splice and use wire connectors inside the motor compartment . . . because going further, all the way up directly into the on/off switch just to avoid splicing the new cord in requires taking more things apart . . . and risks screwing up the power switch . . . that's not worth the extra time and trouble, IMHO.  (This from someone who has dismantled and refurbished over 200 D4C and SE models)

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