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Understanding How a Dishwasher Works In Layman’s Language

If you are fortunate to have a dishwasher in your kitchen, this practical appliance will save you countless hours of your valuable time washing-up and drying pots, pans, cutlery and dishware in your kitchen. This can be a real time-saver especially on those days when you invite guests for dinner and can leave all the work to your trusty dishwasher “robot” so you can enjoy the evening without having to worry about that mountain of work waiting for you in the kitchen the moment your guests leave to go home. We all know what a dishwasher is and all the benefits that it brings you by relieving you of the routine cleaning chores after each mealtime, but have you ever stopped to really ask yourself how this marvelous invention actually works its wonder? In this short article, I would like to explain this in layman’s language that anyone can understand. While dishwashers may differ slightly from model to model, they all work according to the same basic principles. Below I will deal with the four basic stages of the dishwasher operation as well as the most common problems you may encounter in the process whirlpool dishwasher repair pasadena.

The Filling Operation

The filling cycle normally commences when draining the water from the appliance, although some of this water is retained in the sump housing in order to prevent the seals from drying out and cracking when the dishwasher is not in use. The majority of dishwashers have a time-filling cycle, which will not allow more than 7.5 liters of water to enter during operation. This water is connected to the water inlet valve on the dishwasher via the water supply line of your home.

Once you have selected a wash cycle, the controller sends 120 volts of alternating current to the inlet valve’s solenoid, which opens the valve and allows the right amount of water into the dishwasher. The voltage sent by the controller then keeps the valve open between 90 and 120 seconds, depending on the model you have. If the controller fails and does not shut off the voltage to the valve, a float then actuates a switch that shuts off the water immediately. It is important to bear in mind that the purpose of a float is only to prevent overfilling, but it will not actually monitor or control the quantity of water entering the tub. A crucial factor determining the performance of the dishwasher is that it has the right quantity of water. If the dishwasher does not have sufficient water, the dishware will not be cleaned properly, which is normally caused by a restricted water inlet valve. If you want to find out whether or not the water inlet valve is restricted, you should pour between 1 and 2 liters of water into the bottom of the tub and then run the dishwasher. Should the dish performance improve after doing so, this indicates that the valve is probably restricted and should be replaced. Should this be the case, is not advisable that you clean out an old valve owing to the risk of part failure after repair.

The Washing Operation

Once the right quantity of water has flowed into the tub, the washing stage will then start. Water circulation, detergent and water temperature are the three factors affecting the wash cycle. To circulate water within the dishwasher, the controller sends voltage to a circulation motor. The motor drives a pump, which uses an impeller for forcing the water up through the wash-arms. The arms are driven by the water jetting out from the holes. If the arms do not rotate or you experience poor wash performance, the cause could be attributable to a worn or damaged impeller. As the food debris is being cleaned from the dishware, it collects in the sump that filters and retains the larger particles. This filter prevents larger food particles from being circulated through the wash-arms. During the course of time, some particles might still reach the wash-arms, clog the holes and thus reduce wash-performance.

The Rinsing Operation

The dishwasher will go through several rinse cycles similar to the wash cycles, and might also use the heating element. During the final rinse cycle, rinse aid is introduced from the dispenser instead of detergent. This helps to dry the dishware and prevent streaking caused by hard water. The harder the water, the more rinse aid will be needed. Always refer to your user’s manual to determine the optimum rinse aid setting for your use. After the rinse cycles have finished, there will be a final drain cycle. As mentioned above, some water will remain in the tub in order to preserve the seals and prevent cracking.

The Drying Operation

Once the dishware has been washed and rinsed, and the water has been drained from the dishwasher, the drying process will then begin. Two things are needed to dry the dishware efficiently, namely heating and venting. Some dishwashers will use a heating element to heat the area inside the tub, whereas other models will rely solely on heat generated by the final rinse cycle. The hot, moist air will either exit through the permanent vent or be emitted through a vent in the door opened by a wax motor or solenoid. Without proper venting, the moisture or water vapor would condense back into liquid and then collect on the dishware.

 

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