Question about Alpine Air XL-15 Air Purifier

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Alpine XL - 15 Fan Stopped Working

Hi JSEhandyman,

Thank you so much for taking the time to reply to my question. I hope you don't mind me contacting you and asking a follow up or two.

I copied and pasted your reply to me below for reference, as since I asked the question, I've discovered another quirk with the fan. I can give the fan blades a push when the unit is on and the rotary dial is set to high, and the fan will start up and run normally, with me being able to adjust the speed up and down with the dial. However, after running for an hour or two normally, the fan just stops dead for no reason. I can give the blades another nudge and it starts up and does the same thing again.

My question is this: is this more indicative of a switch problem or a fan motor problem? I haven't had it running for a couple of months now since I messed with pushing the blades for a couple of days, for fear that I would hurt something.

Even though I'm a girl, I do own a multi meter. But, I'm not very familiar with how to work it other than what I rarely use it for at work, which requires a high voltage probe to measure transformer loads for neon signs. (I make the neon, and from time to time I have to measure the load on the secondary side of the transformer to test for an over load.)

Thanks again for your time, and letting me pick your brain again.

night light



Hello night light,

How you proceed is going to depend on how comfortable you are taking it apart.

Given it's age and purchase condition, warranty isn't an issue. You will either be able to dis-assemble the purifier and try taking the motor apart and reassembling, or you can find a replacement motor (I've seen some on the web, they start at ~$50).

Another possibility is that the fan pot (the rotary switch that the knob turns to adjust the fan speed) may be out. If you have a multi-meter, see if you can get a signal through (when it's all the way open). If not, try replacing that first. Parts are available onthe web, I can't advertise per FixYa's terms of use.

Hope this helps.

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    WHEN I TURN MY FLAIR PURIFER SMELLS LIKE A WET DOG J WILL LIKE TO KNOW WHY

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Hello again, night light,

I don't think you hurt it by nudging the blades - I have one where it does the same thing unless I have it set on "max".

The challenge is that I don't know which is more likely the problem - I haven't worked much with the electrical aspects of them recently - - I might have to try working with one, although it may vary between models - the one's on the circuit board would be harder to swap-out. What was the vintage of yours again?

Good for you on having a multimeter, and being willing to learn to use it!

All I was talking about earlier was using the CONT (continuity) function to check for a circuit (some models have a little buzz or beep that sounds when you have a connection. If you have the fan pot. wide open, you should be able to get a good signal between the terminals of the pot.

Another option - crude, but effective - would be to "jumper" (short-circuit) the fan terminals (at the pot.) together to see if it runs with the pot. bypassed out of the circuit. This shouldn't harm the motor, and if it still doesn't work, that points to the motor being bad. As always, use common sense and be safety-concious, don't bypass the safety cut-out switch or the like.

I may have to check with one of my brothers (biomedical electronics tech.) for a little additional guidance - - he could probably give me better insight without spending a lot of time on trial-and-error. If that happens, I'll follow-up with another Solution entry in the next few days.

If I can be of further assistance, or if you have additional questions/comments for this item, please let me know.

If/when this solves the issue to your satisfaction, please rate it accordingly.

Thanks in-advance for using Fixya.com,

Jon

Posted on Jan 01, 2009

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Hello night light,

How you proceed is going to depend on how comfortable you are taking it apart.

Given it's age and purchase condition, warranty isn't an issue. You will either be able to dis-assemble the purifier and try taking the motor apart and reassembling, or you can find a replacement motor (I've seen some on the web, they start at ~$50).

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