Installation information for dishwashers

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Installing a new dishwasher or replacing an old one is simple. Most consumers with a small amount of DIY experience can complete this task easily and in a short amount of time. There is a minimum of tools needed for replacement, but there are a few variations in the process.


All brands of dishwashers are available in the standard width of 60 cm (24 inches). When you are choosing a replacement dishwasher base your decision on the features that are important to you but remember that it must fit in the same cabinet space. If you are performing a new installation, you will need to remove cabinets in a 60 cm (24 inch) wide area next to your sink.


If you are replacing a dishwasher, you may use all of your fittings and hoses again unless they appear to have cracks or they leak. For a new installation, you will need the drain hose, copper water line and the electrical power cord. These items are usually included with the purchase of a new dishwasher. If you have a disposal unit in your kitchen sink, you will need a Y dishwasher fitting to route the exiting water down the drainpipe.


The tools for dishwasher replacement include a flat screwdriver, a Phillips screwdriver, pliers and Teflon tape to ensure a watertight fit of water lines. For a new installation, you also will need a drill to make holes in the kitchen cabinet for the water supply line and the drain hose.


The three main connections on a dishwasher are all underneath the appliance. The main power supply connection consists of a white wire, a black wire and a bare ground wire that is held in place with a green screw. The hot water supply connection carries fresh hot water to the dishwasher and the drain hose carries the used water into the main drainpipe on your kitchen sink.


The actual installation includes making the three connections and screwing the dishwasher into the cabinet and leveling it. Turn off the main water supply underneath the sink and the electricity to that area of the kitchen by turning off its breaker in your main breaker box. Connect the hot water supply line, the drain line and the power supply underneath the dishwasher and then roll the appliance into the cabinet. Opening the door will reveal the insertion area for the two screws that hold the dishwasher in place. Read the owners' manual that comes with your new dishwasher for specific installation instructions.

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