How to identify the quality of the washing machine, and how to measure the quality of the washing ma

2.When buying, the whole process of testing the machine, listen to the water inlet valve when the water is not too noisy, and when the water is enough for washing, the wave wheel rotates smoothly and forcefully, without the sound of the jam machine, no mechanical wear noise, and the drainage pipe does not leak. When draining, the water output is large, there is no blockage, and the DC drain valve will knock, which is normal.

When dehydrating, I feel that the inner cylinder rotates at high speed, stable, and there is no abnormal noise of bearing wear, and the cover will stop and alarm.

3.Disassemble the upper cover, see the computer board, no dismantling and repair, dirty spots, and new boards that have been replaced.

4.**Generally around 400 yuan. And it requires free warranty, and the warranty period is generally about 3 months.

5。After the use of the hand, do not put the shower room, when taking a shower, it will cause the computer board to enter the water and burn the board, and the wet circuit is easy to short circuit, and the feet are easy to rust. Be sure to use a special washing machine inlet pipe, and do not take buckets and water pipes to add water by yourself.

Do not do too much laundry or too little water, and generally water should overflow the clothes. The machine is laid flat, and so on.

Listen to the sound of the engine and see the gloss of the surface.

The washing machine motor generally uses a single-phase AC capacitor to run the motor, see figure. The quality of the motor can be measured by the multimeter ohm file (r 1) to measure the DC resistance value of the motor, and the resistance value of the AB terminal is close to or equal to the resistance value of the AC terminal. The resistance of the BC terminal is equal to AB+AC.

Then use a megohmmeter (shake meter) to measure the motor insulation (one end is connected to the lead, the other end is connected to the motor housing), and the resistance value should be infinity.

Answer: To judge the quality of the washing machine motor, we must first distinguish the category of the washing machine motor, and look at the frequency conversion washing machine motor, drum washing machine motor and so on.

1. Then inspect the appearance of the motor to see if it is worn and bumped, worn, whether it can operate normally under no load, whether there is jitter, whether there is any smell such as burning the motor.

2. In the electrical performance test of the washing machine motor, the simple test can be used to measure the resistance of the multimeter, measure the two adjacent wires, if the resistance is 0 or close to 0, it means that the motor is short-circuited or burned, and if the measured resistance meets the normal value or is close to the normal value, it represents the normal of the motor.

3. If you want to conduct a more comprehensive and accurate test on the motor, you can use a comprehensive test system to test the washing machine motor for AC withstand voltage, DC resistance, insulation resistance, no load, load, voltage, current, power and other parameters.

The method of judging the quality of the washing machine inverter motor is as follows: 1. Shake the meter, 500V can shake the meter, if the insulation resistance of hundreds of wires on the three terminals to the motor shell is greater than that, it means that there is no short circuit to the ground. 2. Multimeter test:

Test whether the values of the three phase resistance are equal and almost the same. If there are too many differences, you can rotate, but it won't take long, remember that the larger the motor, the smaller the resistance value!3. Check the bearings and fans, and generally replace the winding motor!

Because if the bearing is locked, sometimes the motor will burn out!4. The no-load current of the motor is generally 10%-50% of the rated current. Sometimes the idle current of the motor is still zero!

5. When the motor is running at the rated current, the output power board rate of full-load operation is basically 100%. Low current operation indicates that the output power of the motor becomes smaller, and it is a load operation. 6. If there is no three-phase electricity, find the starting capacitor of the washing machine, connect it to 220 volts to make it rotate.

In the case of no universal meter, start in the state of power-on washing, the motor does not rotate, and there is no "buzzing" sound (rotate the motor shaft by hand, and it cannot be rotated), remove the wiring harness and the motor lead wire wiring, connect the motor live wire (black) and two neutral wires (pink, red) to the power supply (pay attention to safety), toggle the motor shaft by hand, the motor does not rotate, and the motor fails;

The motor rotates, and the fault may be on the capacitor, wiring harness, computer board;Then remove the trace car mill wiring harness and motor, capacitor lead wire wiring removal, the capacitor red line and the motor red line are wound together and the black wire is connected to the power supply, if the motor rotates, the problem is out of the first beam, computer board;If you don't rotate and rotate by turning the motor shaft by hand, the problem is the capacitor.

Here's how to distinguish a real washing machine from a fake:

1. Open the package to check.

When you open the package, you should inspect the appearance and see if the paint of the whole body is smooth and shinyWhether the door and window glass is transparent and clear, whether there are cracks and scratches;Function selection and flexibility of individual knobs.

2. Power-on test machine.

During the test drive, plug in the power supply, start the washing machine, and adjust the knob to each gear. At this time, the indicator light is on, and the drum in the machine begins to rotate, and is in an intermittent forward and reverse working state. At this time, pay attention to whether the noise is too loud.

3. Open the door again in one minute.

After turning off the machine for about a minute, open the door again. Observing the elasticity of the rubber strip of the door seal should not be overlooked, as it may cause water to leak through the cracks in the door.

4. Inspection instructions, maintenance cards and invoices.

The new national three-guarantee law clearly stipulates that the validity period of the product warranty is calculated from the date of invoice. In order to avoid the delay of delivery by the merchant after payment, resulting in the shortening of the warranty period, the consumer can propose to extend the warranty period from the delivery date after the two parties negotiate when receiving the goods.

Summary. Hello, I'm sorry to keep you waiting, I'll answer for you, how to measure the quality of the washing machine motor 1Shake the meter, 500V shake the meter can be, if the insulation resistance of hundreds of wires on the three terminals to the motor shell is greater than the multimeter test:

Test whether the values of the three phase resistance are equal and almost the same. If there are too many differences, you can spin 3Check the bearings and fans, and generally replace the winding motors!

Because if the bearing is locked, sometimes the motor will burn out!4.The no-load current of the motor is generally 10%-50% of the rated current.

Sometimes the idle current of the motor is still zero!

Hello, I'm sorry to keep you waiting, I'll answer for you, how to measure the quality of the washing machine motor 1If the insulation resistance of hundreds of wires on the three terminals to the motor shell is greater than that of the multimeter test: test whether the three-phase resistance values are equal and whether the disadvantages are almost the same.

If there are too many differences, you can spin 3Check the bearings and fans, and generally replace the winding motors! Because if the bearing is locked, sometimes the motor will burn out!

4.The no-load current of the motor is generally 10%-50% of the rated current. Sometimes the idle current of the motor is still zero!

In the case of no universal meter, start in the state of power-on washing, the motor does not rotate, and there is no "buzzing" sound (turn the muffled cover motor shaft by hand, and it cannot rotate), remove the wiring harness and the motor lead wire wiring, connect the motor live wire (black) and two neutral wires (pink, red) to the old source of the electric state cover (pay attention to safety), and turn the motor shaft by hand, the motor does not rotate, and the motor fails; The motor rotates, and the fault may be on the capacitor, wiring harness, computer board;Then remove the wiring harness and the motor, the capacitor lead wire wiring is removed, the capacitor red line and the motor red line are wound together and the black wire is connected to the power supply, if the motor rotates, the problem is in the register of the wiring harness and the computer board; If you don't rotate and rotate by turning the motor shaft by hand, the problem is the capacitor. Full text.

In the case of no universal meter, start in the state of power-on washing, the motor does not rotate, and there is no "buzzing" sound (rotate the motor shaft by hand, and it cannot be rotated), remove the wiring harness and the motor lead wire wiring, connect the motor live wire (black) and two neutral wires (pink, red) to the power supply (pay attention to safety), toggle the motor shaft by hand, the motor does not rotate, and the motor fails;

If the washing machine does not drain water, and the computer board has a 220V voltage output measured by a universal meter, and the other parts are normal, it means that the drain valve of the retractor is faulty.

Open the rear plugging plate of the washing machine box, and visually check whether the connecting blocks (pull wires, pull rods, pull blocks, and valve core connecting rods) between the tractor and the drain valve are broken, falling off, and stuck. If not, set the washing machine to start only "spinning" and observe if the retractor moves. If the tractor is activated, the fault may be caused by the blockage of the drain port of the bucket, the inner cavity of the drain valve and the drain pipe, which should be cleaned up.

If the retractor does not act, test the voltage between the terminals of the retractor with a universal meter, if there is no 220V voltage, the fault may be caused by the broken circuit of the wiring harness plug-in and poor contact; If there is a voltage of 220V, the retractor is faulty.

1. The washing machine motor has two windings, and the winding resistance is generally tens of ohms;

2. There are two types of washing machine motors: one-way operation and two-way operation. The spin-off motor of a semi-automatic washing machine runs in one direction, and its main winding resistance is smaller than that of the secondary winding.

3. The two windings of the washing machine motor have a common tap, let A and C be independent taps, and B is a common tap, if there is no mildew burning phenomenon in the visual winding, and the winding resistance measurement results conform to the following formula.

rab+rbc=rac

It can be judged that the motor winding of the washing machine is good.

4. The winding resistance of each type of motor is not the same, it is difficult to say how big, and the most important thing is to comply with RAB+RBC=RAC

1. Shake the table with a 500V shake. Shake the insulation resistance value of the wire on the three binding posts to the motor shell, which means that there is no short circuit to the ground above the euro.

2. The multimeter measures the resistance between the three phases of A, B and C, whether it is equal and whether it is about the same. It can be rotated if it is too bad, but it does not take long, and the larger the motor, the smaller the resistance.

3. Check the bearings and fans, and generally replace the motor when it is wrapped, because sometimes the bearing will burn the motor if it is locked.

4. The no-load current of the motor is generally 10 50 of the rated current, and sometimes the idling current of the motor is still zero.

5. When the rated current of the motor is running, it is running at full load, and the output power is basically 100. The running current is small, which means that the output power of the motor becomes smaller, and it is a light load operation.

6. If there is no three-phase electricity, find a starting capacitor of a washing machine, and it can also be turned by connecting it to 220V.

Q: What is the reason why my washing machine drum is not turning?

Capacitor damage: When the washing machine capacitor is powered off or short-circuited, the drum cannot rotate, and the same capacitor should be replaced in time.

The voltage is too low: If the voltage at home is too low to drive the motor to work, the rolling will not be able to operate normally.

The drum is stuck by a foreign object: The roll of the washing machine is stuck by a foreign object, so it cannot rotate properly.

Washing machine motors generally have two windings, and the resistance value is generally tens of ohms.

It can be measured with a multimeter.

It is also possible that the starting capacitor of the washing machine is broken, which is more prone to breakage. Try it again.

Take off the motor and give it directly to the electricity to see if it rotates, if it can, it will not break.

The washing machine doesn't turn, let's see if the motor is broken, and the old electrician will teach you how to measure.

If you turn on the washing machine and don't hear any obvious abnormal noise, and the washing machine is working normally, you can't measure it without a normal measuring tool such as a normal universal meter in your hand. If you have a multimeter in your hand, you can only measure the data of the motor, resistance or something... Before the washing machine leaves the factory, the motor will be tested to ensure that the density is qualified.

Use a multimeter to measure the quality of the washing machine motor Use the resistance gear RX1K file of the multimeter to connect the meter pen with the multimeter to the two sides of the capacitor.

The pointer of the multimeter should be swung to zero first, and then to infinity, and then the pen should be reversed to the capacitor, and the pointer of the multimeter should also be first.

Swing to zero, then to infinity, if the hand is always at zero, it means that the capacitor is short-circuited, if the hand is always at infinity, it is.

Explain that the capacitor is open and do not touch the pen with your hand when measuring.