Common Plumbing FAQs
The answers below are here to help you! We hope the information is beneficial.
Put ice cubes in the disposal (about 1/2 way), run the disposal, flush out with cold water. Next put 1/2 a lemon and grind it up.
I find several reasons why pipes rattle. The most common is that the washer in the faucet or valve is loose. Another is that the pipe is touching another pipe or hard surface in the wall (OUCH!). And for hot water rattles, the energy saving nipples that screw in the top of the water heater, sometimes make a serious rattling noise when you turn on any hot water tap. They have a ball in them that acts like a check valve. Under a DWM it could be that the soft copper water supply is hitting a hard surface or the machine itself is not tight in the opening and is jumping around.
There is no way to clean rust out of old galvanized pipes. Most DWM s have a screen where the water connects to the machine. You access it through the lower front panel. Another solution would be to put a filter on just the hot water pipe to the DWM. If you replace the pipe - use copper - and connect to the old galvanized with a dialectic union.
Dishwashers are supposed to leave some water in the unit at the end of each cycle. This is to keep the element type heater, used for drying the dishes, from burning up. It's a lot like a water heater element. If a lot of water stays in the sump - the drain could be clogged. A partially clogged air gap will do the same thing. The air gap is that little chrome dome on the kitchen counter.
99% of the time when you hear a clunk in any pipe when you turn a faucet on/off - it's a loose washer in the faucet. When you take it apart be sure you get the old washer and a screw. If you don't - turn the water back on and flush out the missing part.