If you are replacing a dishwasher, remove the old dishwasher first, reversing the installation instructions discussed here.
Before doing any work, first unplug the dishwasher or turn off the circuit breaker and disconnect the power. Then turn off the water supply valve (usually located under the sink) or turn off the main house shutoff and drain the supply pipes by opening the faucet.
If there isn't a dedicated shutoff valve for the dishwasher, replace the existing shutoff valve with a special dual-outlet shutoff like the one shown in step 1.
Drill holes at the back lower corner of the sink base cabinet for the drain hose, water supply tube, and power cord.
After installing a dishwasher, adjust its front feet to level the appliance and align it with the cabinets and countertop. Anchor the unit to the underside of the counter with the screws provided. Restore water pressure and check for leaks. Install the dishwasher's front panel. Plug in (or hardwire) the unit.
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1.
To install a shutoff valve for the dishwasher, first shut off the house's main valve. Disconnect the sink water supply tube from the valve, drain it into a bucket, then unscrew the shutoff valve from the supply nipple with a wrench. Wind pipe-wrap tape around the nipple's threads and screw a new dual-outlet valve onto it.
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2.
Install the dishwasher's air gap through a properly sized unused hole in the sink top (punch out the hole plug with a hammer). Insert the air gap, then using slip-joint pliers secure it from above with a locknut and push its cover into place.
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3.
Position the dishwasher near its opening, and then push the hose, supply tube, and power cord through holes drilled in the back corner of the sink base cabinet. As you walk the dishwasher into place, be careful not to pinch or tangle these connectors.
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4.
Reconnect the sink's supply tube to the dual-outlet valve, and connect the flexible supply tube to the valve's second outlet and the dishwasher's inlet.
Then tighten with an adjustable wrench until snug.
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5.
Slip one hose clamp over each end of the short drain hose that will run from the garbage disposal to the large outlet on the air gap and cinch the clamps until tight. Then do the same with the longer drain hose, running it from the smaller outlet on the air gap to the drain fitting at the base of the dishwasher.
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Related terms: how to install a dishwasher, installing dishwasher, dishwasher installation, dishwasher installing tip, how to connect dishwasher, connecting dishwasher, dishwasher plumbing
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Quick Tip:
When installing a dishwasher, protect the kitchen floor by laying down a 3-by-3-foot piece of 1/8-inch hardboard or plywood.
Safety Tip:
Before working on any electrical wiring, turn off the circuit breaker or remove the fuse to disconnect the circuit. Test the bare ends of the wires with a voltage tester to make sure the wires are not charged.
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