Question about Honeywell HWM-450 4 Gallon Humidifier

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Cleaning water tray

I just purchased a Honeywell humidifier HWM 450 The manual states it should be cleaned before first use. First it states to remove the water tray. Then, it says to pour 1 cup undiluted white vinegar into the tray.

Obviously, once removed, the liquid will run out. So- I need to confirm my assumption that the vinegar needs to be added while attached to the humidifier. Is this correct?

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I usually just balance the tray upside down on top of the base and fill the edges with vinegar. You could also put the the tray in a bowl filled with vinegar and submerge the whole thing.

Posted on Jan 18, 2009

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Here are a few things to check:

-make sure the heating element is clean. If there is a thick layer of scale (mineral deposit), then the unit will not turn on.
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The part of the machine that draws water up from the bottom, as well as the bottom tray, need to be cleaned from time to time, or it cannot accept water and will indicate the tank is empty. After removing the tank, unlock the top from the bottom by moving the small lever in the area the tank sits, then pull the entire top section off of the bottom tray. Dump the old water out, then put a solution of vinegar and water in the accepting section of the tray. Replace the top and let that set for a few hours to remove buildup. You may need to use a silicone scraper or something if there is significant buildup. Pour out the vinegar solution and rinse all of those sections off with clean water. Replace the top, lock the bar, and return the tank. Your problem should be fixed.

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