The pump in the washing machine is responsible for pumping water for washing and pumping it out of the tank after the end of the cycle. Typically, a change of water is carried out before rinsing and after. But what if the water remains in the tank and the machine makes a buzzing sound? Then you need to know how to disassemble and check the pump of the washing machine.
In the article we will tell you how to get the pump out of the SM case, disassemble, clean and check for proper functioning.
The device and types of pumps in the washing machine
The drain pump is simple. It consists of an impeller, a stator and a permanent magnet rotor. The rotor can rotate in any direction, therefore, when the impeller is blocked by a foreign object, it can jerk one way or the other.
There are two types of pump in washing machines:
- Circulation type pump for supplying water during washing and rinsing. This type of pump is installed on expensive washing machines such as Siemens, Bosch and Hans.
- Drain pump. Pumps waste water out of the tank. The pump also removes water from the tank after spinning. The characteristics of the pump are as follows: power from 20 to 30 watts, performance of 20 liters per minute.
Where is the pump in the washing machine? The exact location depends on the CMA brand. In models Whirlpool, Samsung (Samsung), Ariston, Beko, LG, Indesit, the pump can be conveniently reached through the bottom, which does not require additional disassembly.
In automatic machines "Electrolux" and Zanussi, it is enough to remove the back panel. And in the CMA brands AEG, Bosch and Siemens will have to completely disassemble the front panel.
Symptoms and causes of malfunction
Before disassembling the water pump, pay attention to the main symptoms of the problem:
- When filling and draining water, the machine is very buzzing and buzzing.
- The washing machine does not respond to installed programs.
- The drum does not receive enough water.
- Water remains after washing in the drum.
- The drain mode is on, but the water leaves very slowly.
Immediately you need to exclude possible causes of the malfunction, such as:
- Blockage in the drain filter or hose.
- Problems with the electronics. If the contacts coming from the control board to the pump are broken, the pump does not receive a signal about the start of work.
Also, the reason that the drain pump does not do its job well may be impeller jamming. Often, when the impeller rotates, threads or hair are wound around it. As a result, it sticks, pumping water stops.
What can be done to verify
Checking the drainage system is easy. You need to start with the drain filter, which serves as a kind of pump plug. You don’t have to disassemble anything. Do this:
- Turn off the water tap.
- Prepare a flat container.
- Use a flat-blade screwdriver to release the latches on the door that closes the drain filter. It is located below the front panel.
- Unscrew the filter, drain the water and inspect it for blockage.
- To check the impeller, shine a flashlight in the filter hole.
- Inspect the impeller for foreign objects. Also see if it is spinning at work. If everything is in order, replace the filter.
Preparation for work and disassembly
To repair or replace the water pump, prepare everything you need.
Accessories:
- A new pump that fits your washing machine model. Before going to the store, you can remove the old part and show the seller. He will offer a suitable replacement. If you decide to buy components on the Internet, an individual number is indicated on the pump, which should be oriented.
- Rubber gaskets.
- Impeller (in case of malfunction).
- Pulley and axle.
- Sensors and contacts for the pump.
Instruments:
- Crosshead screwdriver.
- Knife.
- Multimeter.
Pump disassembly instructions
After you pull out the disassembly pump and inspect the impeller, check the condition of the rubber gaskets. If mining is present on their surface, replace them immediately.
To disassemble, you need to remove the pressure pump cover. Do this:
- Immediately consider how to remove and install the impeller if it is broken.
- First, the snail of the pump is removed - you need to unscrew the screws.
- Mark the location of the motor in relation to the cochlea and remove it with the impeller.
- Now with a sharp knife, cut the impeller blades and set everything in the reverse order.
During assembly, special pump grease can be used.
To check the winding of the pump for serviceability, use a multimeter. How to ring the winding? Apply the multimeter probes to the winding, measuring the resistance. If the winding is faulty, then the part cannot be repaired. Need a complete replacement.