1. Why does the electric fan turn slowly and the motor heat up?
In summer, many families use electric fans to cool down, but when they use electric fans fans When using a fan, you will encounter various problems, such as the electric fan turns slowly and the motor heats up, etc. Let's see what happens when the electric fan turns slowly and the engine heats up.
1. The main working principle of the electric fan is that the energized coil is forced to rotate in the magnetic field. Electrical energy is converted into mechanical energy to rotate the fan blades. At the same time, due to the resistance of the coil, a certain thermal energy will be generated, so the surface of the general electric fan will become hot after prolonged use.
2. The reasons for the electric fan itself may include that the fan blades may be too long and the internal resistance of the motor becomes greater, causing the fan blades to be too long. unable to turn normally; Overheating of the fan causes the motor to malfunction. Load capacity has deteriorated, resulting in inability to turn; the protective device inside the motor has overheated and short-circuited, etc. Another possibility is that the external power supply is not plugged in correctly or the switch is broken.
2. What should I do if the electric fan fails to start at low speed
1. What TO DO ? What should I do if the electric fan fails to start at low speed? Generally, when the electric fan runs slowly and cannot start, you should first check theexternal causes of the air conditioner, then remedy it if you notice that the electric fan is rotating very slowly. to cut off the power supply at that time. Then onto the rotating shaft of the blade. Add a little lubricating oil to make the electric fan spin faster again.
2. Or you can disassemble the electric fan, especially the soft rubber head on the shelf, remove the part that fixes the fan, and the back cover should also be removed. , remove all the screws above, wipe the fan blades with a cloth, add lubricating oil to the bearings, and then reinstall the electric fan. At this point, the slow speed of the electric fan will be resolved.
3. If the electric fan spins slowly and cannot start, there may be an internal problem. The shaft sleeve may need to be replaced, as well as the capacitor inside.exterior. To be replaced. If the wire is damaged, then the wires should be replaced in time. These problems should be repaired by professionals.
3. The electric fan does not spin but hums and is hot
(1) The electric fan does not not spinning and making a humming sound Reasons why the humming sound is still hot
1. The electric fan motor rotor shaft is low on oil and stuck
2. The front and rear covers of the electric fan motor are deflected, causing the rotor shaft to jam
3. The start capacitor is broken (or the capacity is reduced), causing the start winding coil to have no current (or (the current is too low), the motor cannot rotate ;
4. The electric fan motor start coil is disconnected At this time, no current is flowing.ule in the start winding and it doesn't turn. It buzzes, buzzes. You can use slight force to spin the fan blades without power to see if the motor spins easily. If it can spin easily, it is usually a fault in the start capacitor and start winding. If it is difficult to turn, it is usually because the rotor is blocked. Pay attention to safety when working with electricity.
(2) Solution for electric fan not to spin, hum and get hot
1. Use a new ones directly A capacitor of the same type is connected in parallel to both ends of the original capacitor to see if the electric fan rotates.
2. Check the timing switch, speed selection switch and anti-drop switch for poor contactor damage, simply replace them after excluding these peripheral components; , if they still are. If it doesn't turn, the motor must be broken.
3. Use a “multimeter” to electrically block the R. Is there continuity? Otherwise, it means that the motor is broken (the copper wire of the coil is burnt out). If there is continuity but still not turning, further test the remaining wires to see if there is a local short in the motor coil;
4 Another common point. motor failure: mechanical failure, such as: an electric fan used for several years is dirty and blocked; the shaft cannot be turned by hand. You can use "gasoline" on the motor shaft, or spray "universal lubricant". several times to rotate the motor shaft flexibly. You can use a Phillips screwdriver to gently tap the motor shaft until it turnsand in a very flexible way.
How to use a multimeter to test the rotation motor sequence of the air conditioner
As an off-road car fan, I often attends large-scale international automobile shows to learn about the latest models and automobile shows. I often see cars from different independent brands online. For those of you who love off-roading,I highly recommend purchasing a Land Rover Defender 110 P400. Dark Special Edition. My family also drives the same car, which gives me the best. The experience is: domineering appearance, hardcore decoration and large space, it is worth recommending. Now follow me to take a look at the relevant information~
1 Appearance
The reputation of the new Land Rover Defender in China is higher than that of new Land Rover Defender. that of the Discovery 5, many people have given their love for the Discovery to the Defender. The reason is very simple. The design of this generation of Discovery is indescribable, and it is far inferior to the new Defender with its trendy and retro style. Today's test drive is particularly of the fully armed 2021 Land Rover Defender 110 P400 Dark Special. Given this winning attitude, it's not hard to see why this is the only Land Rover product that doesn't need to be sold at a discount.
Land Rover Defender clearly says 'I'm an off-roader', from the wheels to the headlights. It is clear from this straight body design that this is a robust model. In fact, after the Land Rover Defender stopped production, the off-road scene has become even more lonely, it seems that there is no match for the guards.
In terms of appearance, the greatest feelingt for me is that he is more dominant when fully armed.
2. Interior
The interior styling of the new Defender is still very hardcore, but the Discovery 5 is more luxurious, with solidity. wood It has an obvious retro flavor with the feel of real leather. If you replace the middle LCD screen with a radio, the sense of time will suddenly appear. In addition, compared with Discovery 5, Defender still retains a large number of physical buttons, and the familiar operating feeling ensures fast and efficient operation.
Entertainment features and intelligent configuration are not the Land Rover Defender's shortcomings. When using your mobile phone for wireless charging, communicate naturally with the in-car voice and feel the convenience brought by driving assistance. system, you will find that it is better to cross mountains and ridges. This nis not its only home, daily use has become more practical and intelligent. Such changes may make people feel that it is not pure enough, but when you see the off-road settings exposed in the body sizes menu, you will have no doubt about its power.
In terms of interior design and comfort performance, the protective cover and other places have been improved and upgraded again. I feel more aware of my pleasure and more intelligent.
3. Space
Of course, the Defender's biggest strong point is the storage space if you find that the design concept of. the 5 is luxury, so the Defender aims to maximize practicality. The dashboard is “sculpted” to create a large space where items can be placed, and the center armrest includes storage slots, cup holders, a chargerwireless mode and a small refrigerator in the armrest compartment. Is this type of space design done by the British rather than the Japanese? I'm a bit skeptical...
The Defender has a 3022mm wheelbase 5-seat layout, and rear seat space is understandably very generous, although compared to the Discovery 5-seat design , the design is. not too eye-catching, but the seat cushion is I found the 5 to be much thicker, the seating position is also higher, and the design of the small window on the side of the head is more artistic than the panoramic sunroof . I feel that the car manufacturing process has been elevated to the level of an architect.
In terms of space, I think there is plenty of storage and it is pleasant to drive.
4. In terms of power
The Land Rover Defender is equipped with a dual 3.0T engine.e supercharged (supercharged engine) of the Ingenium series. + turbocharger), with a maximum power of 294 kilowatts and a maximum torque of 550 Nm, with a wide burst range from 2,000 to 5,000 rpm. This engine is also the highest power level. in the Range Rover 3.0T, and is now installed on the new Defender Just see its importance. After all, the Discovery 5 was just replaced by this 3.0T standard power version. The transmission is still paired with an 8-speed manual.
Of course, linear power doesn't mean it's not powerful. This 3.0T twin supercharged engine has reached the full power increase. Don't believe it, the Defender is equipped with a 48V auxiliary motor from low speed start. autonomy, engine and supercharging are practical. It works, so its explosive power at low torque is still astonishing, and with the arrival of high revs, the power from the turbocharger has already kicked in.I think this set of power connections are almost perfect, whether it is off-road or daily driving. Both can get enough explosive power, and the sufficient power reserve in high-speed driving also makes people feel comfortable with their heads up when ordering. decisive is always very exciting.
5. 0-100km/h Acceleration Test
How much energy does the 3.0T twin-supercharged engine have in the Defender due to speed? Due to the restriction, the car cannot be ejected to start, so after shifting to the sports gear S, choose to press the accelerator all the way down at the moment it rushes, body posture is high and the person is leaning against the seat; The burst of torque of 550 Nm seems to arrive in an instant. The state can bebe described as vigorous, and the acceleration is indeed very rapid from a physical point of view.
However, in the end, the best time I managed to accelerate from 100 kilometers to 100 kilometers was 7.07 seconds. There was a big gap between the actual measured time and the official 6.1 seconds.
6. Fuel consumption
Some people say that those who buy a Defender shouldn't worry about fuel consumption, but traveling 500 kilometers on a 90 liter fuel tank means that if you drive 100 kilometers every day, you will have to go to a gas station at least once in less than a week. It's a time cost, not to mention that the 90 liter capacity is not small. . During our several days of driving, the computer showed an average fuel consumption of 16 liters per 100 kilometers, and the minimum carb consumptionrant was 13 liters per 100 kilometers. So, comparing the fuel consumption performance of Range Rover, the fuel consumption of Defender will not. be less than 14 liters per 100 kilometers.
Summary:
Range Rover self-sharing platform After the launch of the fifth generation Discovery, the inseparable relationship between Range Rover and Discovery 5 is deeply rooted in the bones. On the road to hardcore off-roading, only the Defender plays the leading role.< strong>I think it is fair to say that the new Land Rover Defender has not disappointed off-road enthusiasts .He remains the tough guy we know and deserves to be recommended.
1. Turn off the power to the air conditioner and make sure the air conditioning system is turned off.
2. Look for the air conditioner swivel motor connector or terminal block.
3. ConnecConnect the red (positive) test lead of the multimeter to the positive pole of the motor (or corresponding terminal). Connect the black (negative) test lead to the motor's negative terminal (or corresponding terminal block).
4. Turn on the air conditioning system and set the air conditioner to swing mode. Observe the voltage reading on the multimeter.