![]() ![]() Could there be a problem at the level of the dishwasher?Ī common situation with the Air Gap is no fault to the Air Gap itself. I also could not see any obvious blockage within the air gap, but I'm now at a bit of a loss how to proceed. The leak has been adequately fixed, but there is still a huge quantity of water coming onto the counter every time the diswasher drains. There was no obvious obstruction in the dishwasher drain hose, nor was there any with the disposal hose attached to the air gap. I just took apart the whole thing and put new clamps on all of the hoses. This caused a large accumulation of water beneath the sink. Additionally, there was now water flowing down the OUTSIDE of the tube from the dishwasher to the air gap whenever the diswasher drained. However, after several months, the air gap began doing the same thing. ![]() I looked at the old disposal, and it appeared that part of the plug had not been properly knocked out. Although I did not expect the result, there was suddenly no more problem with the air gap. I knocked out the plug, and installed the connections as they were previously. We let this go for a long time, but when the garbage disposal broke, I purchased a much better one and installed it myself. ![]() I purchased a new home in 2000, and after several years, water began spewing from the dishwasher air gap. Like I said, it looks just like a washing machine standpipe. This standpipe also will have it's own trap. dishwasher hose then simply gets hung inside the top of the standpipe and is secured at the cabinet wall with a u-clamp to prevent the hose from flying out of the standpipe during discharge. and every tube must be totally clean inside and this other baffle in the drain's tailpiece extension must be clean also, as does the inside of the airgap.Īnother type of airgap system would never have this problem as they construct it building it identical to the washing machine standpipe design which is 1 1/2 inch i.d. If anything is wrong, the water flow can get past the baffle a little and come out onto the sink deck, as you state.Īlso, the discharge lines (often black rubber heater hoses) are not that big an i.d. The typical sink deck mount air gap (the kind that are round chrome cylinders that mount in the 4th cut-out hole) are subject to the workings of a design that heavily rely on a baffle inside. It seems more and more homes are using those small undercounter vents (plumbers! what are those correctly termed?) which incorporate a rubber flap to seal which could be subject to sticking, which would cause a pressure build as suggested until there was enough pressure to make it breathe. depending on how the plumbing system is built, I can see where this may cause a slight pressure build up on the other side of the p trap and cause the same situation as #2. Since you have an air gap, there is no pressure to force the flow other than gravity so if the stand pipe is very short combined with a fast flow into it, you may get a temporary "restriction" effect.ģ. the reciever of the gap does not allow a high enough head to push the water through the trap initially and you have an overflow until the water begins to flow. the washer empties faster than the house plumbing can accept it. I can think of a couple reasons you may have this problem.ġ. When you refer to the air gap, are you referring to the drain pipe of the washer to the house plumbing connection? One idea my wife has is that maybe the construction of the air gap doesn't quite have enough space to deal with the high pressure drain from the Miele dishwasher. So I'm hoping someone here might have an idea to help us. We don't have the money to keep calling plumbers out and paying them $300 a piece hoping someone will eventually figure it out. Now, we're back where we started except poorer. ![]() He also checked the air gap itself and decided that it looked fine (no cracks, etc.) He charged us > $300 and said "sorry, I can't figure out what's going on" and left. He spent a couple of hours working on it, snaking through even more pipe (50 ft? Longer? Can't remember.) No blockage in the pipe. He gave up, stumped, and recommended that we call a plumber. So then, he snaked out 20 feet or so of pipe assuming there must be a clog. He checked the seal of the air gap and decided it was good. We had our handyman look at it, he seemed confident at first that he could fix it. I don't think it's the whole amount of water used by the dishwasher. The amount of water that leaks out is not a huge amount. It's a fairly new house (1999), and the dishwasher is a high-end Miele model. This has been happening since we moved into the house a couple of months ago. When our dishwasher runs, water comes out of the air gap and leaks out onto the counter. ![]()
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