How to wire the cooling fan and how to connect the power cord of the computer cooling fan?

There are many plugs for cooling fans, and those functions must be figured out and properly set up and connected before those functions can be utilized. Last time, Taiwan Sanju introduced the three common misunderstandings of cooling fan selection, so today I will share with you how to wire the cooling fan?

1. Identify the category and model of the cooling fan, and identify whether the lug used in the product is consistent with the required product.

2. Identify the wire diameter of the enameled wire, whether it is consistent with all the required specifications, and do not put the lug on the side of the corner enameled wire.

3. Turn on the power switch of the cooling fan and check that the model displayed on the machine must be consistent with the winding product.

4. Thread the enameled wire out of the groove, into the wire trimming cutter, and put the stator into the mold.

5. According to the direction of the fan blade, distinguish the positive and negative of the terminal lug.

6. Take out the wrapped nails from the mold, check whether there is a single line exposed to the trunking, and then shape it into the plastic frame.

7. After the above wiring steps are completed, you can turn on the start switch to detect the operation of the cooling fan.

Through the above learning, we learned that the wiring method of the cooling fan is not difficult, and we must pay special attention to the fact that we must recognize the enameled wire when wiring, do not use the wrong one, and pay attention to the stability of the terminal piece when putting it into the trunking, and the wire can not run out of the trunking.

The cooling fans of the case are all 12V, and there are a lot of spare four-pin power sockets in the computer, find one or buy a power cord with a plug as shown in the figure below, only use the yellow wire and black wire, (the yellow wire and the black wire are 12V power supply), and the two wires can be connected to the fan.

The plug is shown below.

Tools Raw materials.

Fans, heat shrinkable tubing.

Step Method.

1. Look at the screws that need to be opened to open the cover.

2. To open the cover, you need to unscrew the four screws pointed by the red arrow first, and the four screws in the yellow box are used to fix the PFC inductance, do not move.

3. To remove the fan, you must first cut the power cord of the fan, the black and red wires in the picture are, of course, you can use a soldering iron to solder it, but then you need to take down the circuit board, which is more complicated; Since the power cord of the new fan should be connected to this, try to leave it as long as possible.

4. Then unscrew the four screws that fix the fan in the picture, and the fan can be taken out.

5. Look at the damaged fan.

6. This is the ball bearing fan to be replaced, the ball bearing fan will not be stuck due to heating in the case of long-term computer work, and the life is much longer than that of oil bearing.

7. Pay attention to the airflow direction of the fan, after installation, the wind should blow outside the power supply.

8. Install the fan into the power supply, and note that the power cord of the fan is generally below. Tighten the four set screws.

9. Cut off the connector of the new fan, peel off the head of the power cord, and cut two sections of heat shrinkable sleeve of appropriate length to the fan power cord.

10. Connect the wire according to the color, and use the thermoplastic sleeve to cover the joint, and then heat the sleeve with a soldering iron or lighter, so that the sleeve shrinks and covers the joint, and the temperature is not too high when heating to prevent burning the wire.

11. In order to prevent the fan power cord from being stuck in the power supply, tie the fan power cord with a plastic wire.

12. Install the power supply shell, the work is completed, and everything is normal when the power is turned on.

1.Turn off the power first, and then read the manual in detail to distinguish the electricity. The function and purpose of the five wires on the machine.

2.Connect the three wires on the motor that control the wind speed to the gear of the switch. Terminal connection.

3.Connect the power cord on the motor with a socket switch, and there is only one left. root, just connect the capacitor.

4.When the power supply is turned on and the fan rotates normally, the wiring is successful. The red wire (live wire) and blue wire (neutral wire) of the four-wire fan motor are connected to the main coil of the motor, and both ends of the starting capacitor are connected to the red wire and gray wire at the same time.

The orange line and the red and gray wires are connected to the speed control switch respectively, the red line is connected to the high gear, the orange wire is connected to the middle gear, and the gray wire is connected to the low gear. However, some fan wires may be different in color. At this time, we need to use a multimeter to measure, find out the relationship between the coils, and then wire.

In general, the red wire (live wire) and blue wire (neutral wire) will be connected to the main coil of the motor, and one end of the starting capacitor will be connected to the live wire. Next, we have to think about which of the other two wires is connected to the starting capacitor. We can connect the blue wire (neutral wire) to one end of the ohmic file of the multimeter, and then use the other end of the multimeter to measure the two wire plugs of the secondary coil (i.e., the gray and orange wires in the diagram) in turn, and connect the wire with the highest resistance to the connection end of the starting capacitor.

The five-wire motor of the fan motor is a three-speed regulating motor.

For variable speed fans, variable speed switches should be added, and the wire ends at all places should be set as follows: the main winding wire ends of the motor (low impedance red, high impedance yellow, circuit black; The starting winding wire is connected to capacitor white and circuit blue); Plug two wires (green, zong);

Variable speed switch wire head (purple, blue);

Capacitor wire (gray, orange). The color of the quasi should be like this: a wire of the plug is connected to the incoming line of the speed control gear switch, and the three red, white and blue are one, two, three, three gears (as for which is fast and which is slow, according to the resistance value between it and the live wire, the resistance is small and fast), yellow + black capacitor + plug Another wire (starting coil).

There are a total of 5 lines for electric fans, which are black wire, red wire, white wire, blue line, and yellow line. The blue wire is responsible for connecting the electric fan switch. Red, white and blue are connected to the three gears of the switch, and the yellow wire is connected to the capacitor.

1. There are a total of 5 lines for ordinary electric fans. The black line represents the main line. The red line represents the fast shift.

The white line represents the mid-range, the blue line represents the slow range, and the yellow line represents the capacitor line. The blue line is mainly responsible for the switch of the electric fan. Red, white and blue are connected to the three gears of the switch.

The red wire is connected to the capacitor wire. Once connected, you can plug it in. Then press different gears to observe the wind speed of the electric fan.

2. If you find that the electric fan does not rotate after connecting, you can use your hand to pluck the fan blade at this time, if it is more difficult to fluctuate. It may be that the lubrication of the motor is not good, and then you need to add some lubricating oil to the bearing part. In daily use, it is also necessary to avoid using the electric fan for a long time, which will cause motor consumption.

3. When using the electric fan, if you find that the fan is hot or has a burning smell. It is necessary to disconnect the power supply immediately and then carry out the service. When the electric fan is not used for a long time, pay attention to dustproof treatment.

It is best to place the electric fan in a cardboard box to avoid the electric fan being squeezed. 4. When using the electric fan, try not to press the switch frequently. When the electric fan is full of dust, it should be removed with a damp cloth in time.

The motor line of the electric fan is mainly divided into black wire, red wire, white wire, blue wire, and the power cord is any one of them. The blue line is generally the switch of the electric fan, the red line is generally the fast gear, and the white line is a switch of the gear. The red wire is connected to the first gear, the blue wire is connected to the second gear, the white wire is connected to the third gear, the yellow wire is connected to the other end of the capacitance black wire, and the black wire is connected to the main plug.

1. The motor of the general electric fan is divided into live wire and neutral line, and the general zero line and live wire are used at home, and there will be a speed regulation in the middle of 220 volts.

2. During the use of the electric fan, if the button of the power supply is pressed and the fan does not rotate, you first need to check whether the fan power cord is aging or damaged, and replace the power cord with the risk of damage or aging to solve the problem.

3. If the electric fan is suddenly fast and slow during operation, it may be because the voltage in the family is insufficient and the fluctuation range is large, you can use a voltmeter to measure the voltage fluctuation and install a voltage regulator to stabilize the voltage. If the voltage is insufficient during peak hours, you need to contact the local power supply company to solve the power supply problem.

The wiring method of electric fans is generally divided into two types, one is that two wires are directly inserted into the plug, and the other is that it needs to be wired.

The wiring method is as follows:

1.First, peel off a section of insulation from the power cord and motor cord of the electric fan to expose the metal wire.

2.Wrap the metal wires of the power cord and the metal wires of the motor wire with insulating tape or insulating sleeve respectively to avoid short circuits.

3.The metal wire of the power cord and the metal wire of the motor wire are inserted into the corresponding holes of the power plug and the motor plug respectively, the two holes of the general power plug are the live wire and the neutral wire, and the two holes of the motor plug are the positive and negative poles.

4.After plugging in, tighten the screws on the plug with a quick screwdriver to fix the metal wire and avoid poor contact.

5.Finally, wrap the plug with insulating tape or insulating sleeve to prevent leakage or short circuit.

Notes:1Be sure to turn off the power before wiring to avoid electric shock.

2.When wiring, pay attention to the positive and negative poles of the power cord and the motor wire, as the reverse connection will cause the electric fan not to turn or turn in the opposite direction.

3.After wiring, check whether the plug is firm and whether the metal wire is in good contact to ensure safety.

The power cord of a computer cooling fan usually has two connectors, one is a three-pin connector and one is a four-pin connector. The connection method of these two joints is slightly different.

For three-pin connectors, one of them is the positive pole, one is the negative pole, and the other is the speed detection line. When wiring, the positive pole should be connected to the "+" pin on the fan interface shed width such as SYS FAN1 or CPU Fan on the motherboard, the negative pole should be connected to the "-" pin, and the speed detection cable should be connected to the "speed" pin on the fan interface, so that the fan speed can be monitored through the motherboard.

For the four-pin connector, one of them is the positive pole, one is the negative pole, and the other two are the PWM signal line and the speed detection line. When wiring, the positive pole should be connected to the "+" pin on the SYS FAN1 or CPU fan and other fan interfaces on the motherboard, the negative pole should be connected to the "-" pin, the PWM signal cable should be connected to the "PWM" pin on the Dazhao fan interface, and the speed detection cable should be connected to the "speed" pin on the fan interface.

It should be noted that you should check the fan connector type of the motherboard before wiring, so as to avoid the computer not booting normally or the fan not working properly due to the reverse or wrong connection. In addition, the power cord of the computer cooling fan should be avoided as much as possible to avoid interference or short circuit.