Question about Bemis 427 300 Humidifier

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1 tank empties at once, overflow all over floor.

I have replaced tank caps, but one tank drains right out and overflows. This machine is not a year old. Worked well at first.

Wife is becoming irate - - please help!

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Ever find a solution to this? I had the same bug after 2 years working fine, felt stupid as I couldn't understand it. I replaced both tanks for no good reason then it worked fine, took it out this season and it's doing it again.

Posted on Jan 02, 2010

  • mjmpiano Jan 03, 2010

    The problem is definitely crack(s) in the water tank. This lets air in and the tank empties, it is designed to be a sealed tank except for the valve at the bottom. The plastic is very brittle and one side is glued on, it does not take much when you put it in the sink to fill it to bang it a bit and make a small crack. The one I fixed yesterday had a crack in the top corner, i dripped some thin superglue (CA) on the corner from the inside and then a bit on the outside, prob solved.

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2 Answers

HAD UNIT FOR SEVERAL YEARS. IT STARTED TO OVERFLOW INSIDE AND FLOODS CARPET. TANKS DO NOT LEAK AND ARE INSTALLED PROPERLY


Larry, there is a float above tank,remove tank, adjust float lever , bend down arm gently, or loosen adjusting screw on arm adjust down and re tighten.
press the helpful button and follow me on fixya for more tips and info.

Feb 13, 2016 | Humidifiers

1 Answer

We have a Aprilaire 550 that have been overflowing via the bottom of the unit & down the line. It seems as if there is a gooey build up after a few days/weeks in the outlet drain that inhibits flow...


Yes, it happens fairly often. The solution is to flush the system with a 50/50 solution of White Vinegar and Bottled Distilled Water. And clear the outlet line, running from the bottom of unit.
Also check any opening to the tank that would allow dust and lint to enter the tank and seal them, if necessary with duct tape. If the furnace is in a dusty area, do the best that you can to eliminate the dust.

Hope this helps you to solve the problem.

Apr 22, 2011 | Aprilaire 550 Humidifier

1 Answer

2 months into the heating season I noticed a large puddle around my heater. the Aprilaire 600 unit was leaking. The distrution tray had a red substance around the water holes. Also the overflow drain line...


Mold can really cause problems with humidifiers-
They do need to be serviced, cleaned up, and something like weak bleach used to kill mold spores, -- get it all tidy and clean!
Were you able to clean out the drain line?-- and is it draining now?
And is the float valve shutting off the water flow, before it reaches the overflow drain pipe?
Another concern would be the soaking pad-- Has it been changed recently?

Tell us more--

Mack B

Jan 06, 2011 | Aprilaire 600 Humidifier

2 Answers

When furnace cycles on the humidifier overflow spout has a tremendous flow of water that pours all over basement floor. Is there a valve problem ? I can connect a drain tube from this overflow spout to the...


If the water stops when the heater is not running then the humidifier is working fine. I know it seems like alot of water but that's how it's designed.

Jan 02, 2010 | Aprilaire 550 Humidifier

1 Answer

Waterflow


If the unit was installed with a saddle valve, which is most often the case, you could try turning down the water pressure by tightening the valve a bit. Just follow the copper water line from the humidifier back to the main water line and look for a little valve that you can turn. Try to tighten this enough so that you still have water flowing, but at the proper volume so that it doesn't overflow and splash all over.

Dec 16, 2008 | Aprilaire 600 Humidifier

4 Answers

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Try to just fill the tank with water and set it upright on a table. If it leaks, the tank is cracked and needs to be replaced. Order one at kaz.com (search using model#). I have had this tank leak if the special cap is not sitting properly on the base. Make sure that the steam tower is properly locked in place before you place the water tank in the reservoir. The cap on the tank has a spring release that has to be correctly lined up so it only releases water when the water level in the reservoir drops.

May 08, 2008 | Vicks Warm Mist V745A 1 Gallon Humidifier

1 Answer

Hm3500


It's not a problem for the tanks to empty at an uneven rate...as long as the second one continues to supply water after the first one is empty. Yes, a slight tilt off of level could cause this. One way to test for this is to turn the entire unit around. If the floor is uneven, this might cause the other tank to empty first. You could also try placing a thin spacer (cardboard?) under a couple of the feet to change the level. Whichever tank is lowest should tend to empty last.

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Bemis Water Wick 6974Tanks will not disperse water properly


sounds like new caps should solve it, but have you tried soaking the old caps in vinegar overnight? these guys are not the only ones, but they have the correct caps in stock at a pretty good price http://www.marbeck.com/humidifier_parts_bemis.html hope this helps :)

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3 Answers

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Eureka! Solved my "left bottle not emptying" problem. The problem was not with the bottle but that the top of unit which houses the on/off switch was not seated properly. It takes only a very slight difference in water level for the float to activate the switch, therefore if the top is raised even 1/4" the unit will shut off before the water level is low enough to allow the left bottle to drain.

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