If your Dacor dishwasher is making noise, start with the most common culprit: the drain pump. A dishwasher making noise or making a loud noise often has debris caught in the drain pump, and if the pump is clear but still noisy, it usually needs to be replaced. Next, check the circulation pump, since worn motor bearings can cause a steady humming noise, buzzing noise, or droning sound during the wash cycle. After that, inspect the drain impeller, which moves water through the drain hose, because a broken impeller can create extra noise and hurt draining performance. The pump and motor assembly is another likely source if the motor bearings, drain impeller, or wash impeller are worn or damaged. A damaged wash impeller can also scrape the pump housing and cause a grinding noise. On some Dacor models, you may be able to replace the impeller or motor separately, but on others you will need the complete pump and motor assembly. Enter your model number on RepairClinic.com to find the exact Dacor drain pump, circulation pump, drain impeller, wash impeller, or pump and motor assembly for your dishwasher.
01 - Dacor Dishwasher Drain Pump
First, check the drain pump to ensure that it is clear of debris. If the drain pump is clean but it is still noisy, replace it.
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The circulation pump motor has bearings that wear out over time. When the motor bearings fail, they generate a continuous drone. If the motor bearings have failed, you must replace the entire circulation pump.
Part of the pump and motor assembly (such as the motor bearings, drain impeller, or wash impeller) might be defective. Often, you can replace the pump’s individual parts. However, if you do not want to disassemble the pump to replace its parts, or if the parts are not available separately, you can replace the entire pump and motor assembly.
The wash impeller is a small plastic blade that forces water through the spray arms. If one or more of the impeller blades is broken, the dishwasher will make noise. In addition, if the impeller is damaged, warped, or bent, it can scape against the pump housing. Inspect the wash impeller for damage. If the wash impeller is damaged, replace it. On most models, you can replace the wash impeller independently of the pump and motor assembly. Search for your model number to determine if your impeller is replaceable. If the impeller cannot be replaced separately, you will have to replace the entire pump and motor assembly.
06 - Dacor Dishwasher Circulation and Drain Pump Motor
The circulation pump motor has bearings that wear out over time. When the motor bearings fail, they generate a continuous drone. If the motor bearings have failed, replace the motor or replace the entire pump and motor assembly.