how do you disconnect a dishwasher from rest of the plumbing.?

Question

we recently brought a house for rental property and it has a dishwasher, which doesn't work, planning on replacing it, but it frequently backs up water in it and overflows.

Answer 1

It sounds as though waste water from the sink is moving into the dishwasher. There are two lines that need to be closed. The first, of course, is to close off the supply line. If it was installed properly, there will be a shut-off on the supply line to the dishwasher. If not, you will need to somehow cap that line while the water supply to the house is off.
The second problem (and perhaps the most pressing for you) is to close off the opening into the drain line to which the drain from the dishwasher is connected. Get a flexible hose, clamp it to the nipple on the sink drain line and kink it to close it off. That will work as a temporary "fix".

Answer 2

I think you have two problems. To disconnect he dishwasher follow the the hoses, you should come to valves, if you do close them. Once in a great while there will be no valves. This call for disconnecting the hose and either plugging or capping the holes where the hoses were attached. Be sure and use some tape or paste on the threads.

Your other problem is where ever the washer out let hose in connected, (hopefully under your sink) that will be the drain line for your sink. Sorry but that line has a partial blockage, a large volumn of water will not drain down fast enough. First try running hot water down the kitchen sink. Let run, drain the hot water tank if you must. Hot water is the cheapest and easiest drain cleaner known to man. Fill up one side of the sink with luke warm water, then pull the plug and let it drain. It no water comes up in the other side of the sink you are home free. If that don`t work in your opinion, go to the plunger. If still no success resort to the liquid drain cleaner. Still use hot water. If you are still in trouble, take the drain line apart below the sink and go with a snake. Or if you are ready to give up call a plummer. But since you purchased the house for income, buy the snake, it will come in handy over the years, Believe Me.

Answer 3

The shut off is usally under the sink connected to the hot water line. The dishwasher sound like there is something in the dishwaster drain ( inside he dishwasher, covered by a plasitic grate.) Remove the grate and see if something is clogging the drain, if not then replace the dishwasher.

Answer 4

It (shutoff) is usually under the sink, it taps the water line there. I would check the drain line from the d/w, probably clogged and that will cause this.

Answer 5

just rotate & flip