Drain and recirculation pumps for dishwashers

No matter how reliable household appliances, over time, and it may break. If the drain pump for the dishwasher has failed, it is not scary. It can be replaced independently at home, but, most importantly, it is possible to choose a part that is identical and fully compliant with the brand of household appliances. But if the recirculation pump for the dishwasher is broken, the replacement will cost a pretty impressive number.

Functional differences

The task of the recirculation pump is to inject or pump out water and gas-air mixtures. For a dishwasher, it provides a continuous supply of water to the working chamber, spraying it through special devices for high-quality washing up. Then the water is filtered, warmed up and again supplied under pressure - these are the functional duties of the main engine of the machine.

When choosing a new circulation pump, each user should be guided by the following important factors:

• real value;
• compatibility with the home appliance model installed in the house.

After discharge of all the work, the pump for the dishwasher, which is located in the lower part of the unit, is responsible for draining the waste water. On Bosch models, it is located next to the circulating pump in one block, on the others from above. It differs from the main pump in size, and the principle of their operation is identical, only the first circulates water inside the machine, and the second - to remove it into the sewer.

Design

Both pumps have almost the same design, but different dimensions and layout. Let us consider in more detail every detail and principle of its work.

Circulation pump

The quality of all modes of the machine depends on the stable operation of this device: water is circulated during dishwashing using a pump for the dishwasher.

A heating element is inserted into its casing - in modern household appliances, they are usually of a flow type, i.e.instant action.

The circulation pump supplies water to rocker arm nozzleswhere it breaks out at a fairly high speed, the centrifugal force causes them to rotate and splash the water flow over the entire tank - a working container of stainless material. All food residues are washed away under this pressure, water flows to the bottom, where it is filtered, sucked into the tank and re-enters the nozzles. Thus, there is a constant recirculation of the water flow in the car.

Pump drain

The drain pump is responsible for removing waste water from the machine after the washing process. The control module sends a signal, the pump turns on and the contaminated water is removed from the machine. Weak experts called impeller drain pump - if it is blocked by a foreign object, then it turns on the shaft and the device must be replaced: such a defect cannot be repaired.

Breakdown diagnostics

With the initial technical knowledge, it is possible to independently determine the cause of failure of the dishwasher. If the water does not circulate in the car, the coarse and fine filters are not clogged, and the nozzles on the rocker arms are clean, then this is a sure signit's time to replace circulating motor - There can be no other options.

Important! The circulation engine is not repaired, but must be replaced.

When the water in the Bosch dishwasher does not heat up, the circulation pump must also be replaced, because there are instantaneous elements used to heat the water - they are not dismantled.

The most common cause of failure drain pump not only on Bosch machines, but also on other products of this type - this is the clogging of foreign elements of the drain filter together with the pump. It is easy to clean the filter and it is ready to work again, but, as a rule, things are much worse with pomp - it needs to be replaced. To dismantle you have to disassemble almost the entire machine, if you are not confident in your abilities, it is better to call the master.

Replacement Algorithms

So, in order to replace the recirculation pump for any dishwasher or drain pump, it is necessary to disassemble the machine almost completely. To do this, you will need simple tools: a screwdriver or screwdriver, pliers, an awl and a considerable reserve of enthusiasm and self-reliance.

Circulation pump

Replacing this unit is simple, but the user must know the information about the internal device of the assistant. Disassembly steps:

• open the loading door of the car and remove all unnecessary from the tank;
• carefully and carefully remove yoke from the place of attachment;
• we delete a mesh glass of the filter of rough cleaning;
• unscrew fasteners;
• remove the side panels, plastic mounts;
• heat insulation is removed to the side so as not to interfere with the work;
• for convenience, gently turn the machine upside down;
• disconnect inlet hose and a pallet with units from the body;
• disconnect the wiring and drain hose;
• Carefully remove the door mounting - springs, disconnect the hoses of the inlet and outlet;
• gently remove the pallet so as not to damage float;
• opened the pump unit.

After that, it remains only to remove the circulation pump and install a new unit. Further actions are carried out in reverse order.

In stores, a new circulation pump with a flow-type heating element for a BOSCH machine can be bought at a price of 4107 rubles.

Drain pump

Replacing the Bosch dishwasher with a broken pump to remove waste water is carried out in the same way as changing a circulatory engine.

The main work is to properly disassemble the machine, all actions are done, as in the above case.

Next to the circular pump there is also a drain, in order to unscrew it, it is necessary to press with a screwdriver retainer and turn the pump cover clockwise. Disconnect the terminal of the wire supplying current, change the broken pump to a new pump.

Very important! In the store, you must purchase an original pump that will match the make and model of the machine - otherwise you will have problems with the installation.

The cost of the drain pump from 825 rubles, depending on the model of the machine.

This video will help you in carrying out quality repairs on your own.