Featured Picture: Right here is an instance of a Featured Picture
[Image of Blower Fan]
When you’re having bother together with your blower fan, one of many first stuff you’ll wish to do is take a look at it to see if it is nonetheless working. Nevertheless, in case your blower fan is related to a circuit board, it’s possible you’ll not be capable of take a look at it with out bypassing the board. Here is the way to do it:
First, you will must establish the wires that join the blower fan to the circuit board. As soon as you’ve got recognized the wires, you will must disconnect them from the board. Subsequent, you will want to attach the wires on to an influence supply. Remember to use the proper polarity, or you can injury the blower fan. As soon as you’ve got related the blower fan to the facility supply, you possibly can take a look at it to see if it is working. If the blower fan is working, you will want to exchange the circuit board.
Bypassing the board to check a blower fan is a comparatively easy course of, nevertheless it’s vital to take precautions to keep away from damaging the fan or the circuit board. When you’re not comfy working with electrical parts, it is best to name a certified electrician that will help you.
Security Precautions
Earlier than you start, it is essential to prioritize security by taking the next precautions:
1. Energy Security:
To reduce electrical hazards, be sure that the facility to the blower fan is totally disconnected on the circuit breaker or fuse field earlier than any work commences. Use a non-contact voltage tester to substantiate that the facility has been efficiently remoted.
Keep away from touching any electrical wires or parts till you’ve got verified that the facility is off. All the time use insulated instruments and put on applicable protecting gear, similar to rubber gloves and security glasses, when engaged on electrical tools.
When you’re not assured in your electrical abilities, it is extremely beneficial to hunt skilled help from a certified electrician to make sure secure and correct dealing with of {the electrical} connections.
| Security Precaution | Significance |
|---|---|
| Disconnect energy earlier than working | Prevents electrical shocks |
| Use non-contact voltage tester | Confirms energy isolation |
| Put on protecting gear | Minimizes threat of harm |
| Search skilled help if wanted | Ensures secure electrical dealing with |
Instruments and Supplies Required
Earlier than embarking on the duty of bypassing the board to check a blower fan, it’s essential to assemble the mandatory instruments and supplies. A multimeter, a screwdriver set, electrical tape, and a jumper wire are important.
Multimeter
A multimeter, often known as a volt-ohm-milliammeter (VOM), is an indispensable device for testing electrical circuits and parts. It’s used to measure voltage (V), resistance (Ω), and present (mA). When testing a blower fan, the multimeter will likely be primarily utilized to measure voltage throughout the fan’s terminals.
To make use of a multimeter, set it to the suitable measurement perform (often “AC Volts”) and join the probes to the fan’s terminals. The multimeter will show the voltage studying, which must be throughout the specified vary for the fan.
Varieties of Multimeters
There are two important kinds of multimeters: analog and digital.
| Analog Multimeters | Digital Multimeters |
|---|---|
| Mechanical pointer strikes to point readings | Digital show exhibits readings |
| Much less exact than digital multimeters | Extra exact and simpler to learn |
| Sturdy and withstands harsh situations | Delicate and could also be broken if mishandled |
Disconnecting Electrical Energy
1. Flip Off the Circuit Breaker or Fuse
Find the circuit breaker panel or fuse field that provides energy to the blower fan. Flip off the corresponding circuit breaker or take away the fuse to chop off electrical energy to the fan.
2. Test for Energy Utilizing a Voltage Tester
Earlier than touching any electrical parts, use a voltage tester to confirm that the facility is certainly disconnected. Contact the tester’s probes to the fan’s electrical terminals. If the tester doesn’t illuminate, the facility is off and it’s secure to proceed.
3. Disconnect the Electrical Wires
Disconnect {the electrical} wires related to the blower fan’s motor. Most followers have quick-connect terminals that may be simply separated by hand. If the terminals are screw-type, use a screwdriver to loosen the screws and take away the wires. Make certain to label the wires so that you could reconnect them appropriately later.
| Terminal | Colour |
|---|---|
| Line | Black or Purple |
| Impartial | White |
| Floor | Inexperienced or Naked Copper |
4. Take away the Blower Fan
As soon as {the electrical} wires are disconnected, the blower fan will be faraway from its housing. Rigorously elevate the fan out and set it apart on a piece floor.
Eradicating the Blower Cowl
Earlier than you start, collect the mandatory instruments and supplies:
- Phillips head screwdriver
- Flathead screwdriver
- Security glasses
- Gloves
Now, observe these steps to take away the blower cowl:
- Find the screws that maintain the blower cowl in place. These screws are usually situated on the edges or again of the blower.
- Use a Phillips head screwdriver to take away the screws.
- Use a flathead screwdriver to pry the blower cowl unfastened from the blower.
- Examine the blower cowl for any injury. If the quilt is broken, it have to be changed earlier than you possibly can proceed.
After you have eliminated the blower cowl, you possibly can proceed to check the blower fan.
Utilizing a Multimeter
Security Issues
- Guarantee the facility to the blower fan is turned off on the breaker or fuse field.
- Put on applicable security gear, together with gloves and eye safety.
Supplies Required
- Multimeter
- Screwdriver
- Electrical tape
Process
- Take away {the electrical} panel protecting the blower fan.
- Establish the wires connecting the capacitor to the blower fan motor.
- Disconnect the capacitor wire from the motor.
- Set the multimeter to the AC voltage setting.
- Join the multimeter’s results in the terminals of the capacitor, guaranteeing correct polarity.
Capacitor Testing Particulars:
- Regular Capacitor: The multimeter ought to show a quick voltage spike adopted by a gradual lower to zero.
- Unhealthy Capacitor: The multimeter will show a steady voltage studying or no studying in any respect.
- Broken Capacitor: There could also be indicators of bodily injury, similar to bulges or leakage.
- Change the capacitor with a brand new one if it fails the take a look at.
- Reconnect the wires to the motor and substitute {the electrical} panel protecting.
- Flip the facility again on and take a look at the blower fan.
Testing Fan Operation
Earlier than you begin troubleshooting your fan, flip off the facility to the unit on the circuit breaker or fuse field. As soon as the facility is off, you possibly can take away the fan cowl to entry the motor.
1. Test the facility provide
Use a multimeter to examine if the facility provide to the motor is working correctly. If there isn’t a energy to the motor, the issue could also be with the wiring or the circuit breaker.
2. Test the capacitor
The capacitor is a small, cylindrical element that helps the motor to begin. If the capacitor is defective, the motor won’t be able to begin.
3. Test the motor windings
The motor windings are a sequence of coils which might be wrapped across the motor’s stator. If the windings are broken, the motor won’t be able to run.
4. Test the bearings
The bearings are situated on the ends of the motor shaft. They permit the shaft to rotate easily. If the bearings are worn or broken, the motor will make a noise when it runs.
5. Test the fan blades
The fan blades are connected to the motor shaft. They create the airflow that cools the unit. If the fan blades are broken or bent, the airflow will likely be decreased.
6. Test the airflow
After you have checked all the above parts, you possibly can activate the facility to the unit and examine the airflow. If the airflow is weak or nonexistent, there could also be an issue with the ductwork or the blower motor.
| Element | Check |
|---|---|
| Energy provide | Use a multimeter to examine for voltage. |
| Capacitor | Disconnect the capacitor and measure its capacitance with a capacitance meter. |
| Motor windings | Use a multimeter to examine for continuity. |
| Bearings | Pay attention for noise when the motor is working. |
| Fan blades | Examine for injury or bent blades. |
| Airflow | Activate the unit and examine for airflow. |
Testing Fan Pace
The fan’s pace will be measured utilizing a tachometer. A tachometer is a tool that measures the pace of a rotating object. To make use of a tachometer to measure the fan’s pace, observe these steps:
- Flip off the facility to the fan.
- Connect the tachometer to the fan’s motor shaft.
- Activate the facility to the fan.
- Learn the tachometer’s show to measure the fan’s pace.
The fan’s pace must be throughout the producer’s specs. If the fan’s pace is just too low, it could not be capable of transfer sufficient air to chill the system. If the fan’s pace is just too excessive, it could make an excessive amount of noise and will shorten the lifetime of the fan.
The next desk exhibits the approximate fan speeds for various kinds of programs:
| System Kind | Fan Pace (RPM) |
|---|---|
| Desktop pc | 1000-2000 |
| Laptop computer pc | 2000-3000 |
| Server | 3000-4000 |
Join the Fan On to Energy
If the blower fan just isn’t spinning, you possibly can bypass the board to check it by connecting it on to energy. To do that, you’ll need to disconnect the fan from the board and join it to an influence supply, similar to a battery or an influence adapter. If the fan spins when it’s related to energy, then the issue is with the board, not the fan.
Test the Energy Provide
If the blower fan just isn’t spinning, it is best to examine the facility provide to guarantee that it’s offering energy to the board. To do that, you need to use a voltmeter to measure the voltage on the energy provide terminals. If the voltage just isn’t right, then the facility provide could also be defective and can must be changed.
Test the Wiring
If the blower fan just isn’t spinning, it is best to examine the wiring to guarantee that it’s appropriately related. To do that, you need to use a multimeter to check the continuity of the wires. If any of the wires are damaged or disconnected, then the blower fan won’t be able to obtain energy.
Test the Blower Fan Motor
If the blower fan just isn’t spinning, it is best to examine the blower fan motor to guarantee that it’s not defective. To do that, you need to use a multimeter to check the resistance of the motor windings. If the resistance is just too excessive or too low, then the motor could also be defective and can must be changed.
Test the Blower Fan Capacitor
If the blower fan just isn’t spinning, it is best to examine the blower fan capacitor to guarantee that it’s not defective. To do that, you need to use a multimeter to check the capacitance of the capacitor. If the capacitance is just too low, then the capacitor could also be defective and can must be changed.
Test the Blower Fan Blade
If the blower fan just isn’t spinning, it is best to examine the blower fan blade to guarantee that it’s not obstructed. To do that, you possibly can take away the blower fan from the housing and examine the blade for any particles or injury. If the blade is obstructed, then the blower fan won’t be able to spin.
Test the Blower Fan Housing
If the blower fan just isn’t spinning, it is best to examine the blower fan housing to guarantee that it’s not obstructed. To do that, you possibly can take away the blower fan from the housing and examine the housing for any particles or injury. If the housing is obstructed, then the blower fan won’t be able to spin.
Extra Troubleshooting Ideas
Listed below are some further troubleshooting suggestions for blower followers:
| Symptom | Attainable Trigger | Answer |
|---|---|---|
| The blower fan is making a noise | The blower fan just isn’t correctly lubricated | Lubricate the blower fan |
| The blower fan is vibrating | The blower fan just isn’t correctly balanced | Steadiness the blower fan |
| The blower fan is overheating | The blower fan just isn’t correctly cooled | Clear the blower fan and be sure that it’s correctly ventilated |
Reconnecting Electrical Energy
9. Reconnect {the electrical} energy to the blower fan. To do that, observe these steps:
- Flip off the facility to the blower fan on the important breaker panel.
- Find {the electrical} wires that had been disconnected from the blower fan.
- Reconnect the wires to the blower fan, ensuring that the black wire is related to the black terminal, the white wire is related to the white terminal, and the inexperienced wire is related to the inexperienced terminal.
- Tighten the screws on {the electrical} terminals to safe the wires.
- Activate the facility to the blower fan on the important breaker panel.
- Check the blower fan to guarantee that it’s working correctly.
| Wire Colour | Terminal Colour |
|---|---|
| Black | Black |
| White | White |
| Inexperienced | Inexperienced |
Put up-Check Upkeep
As soon as the blower fan has been examined and is functioning correctly, it is very important carry out post-test upkeep to make sure continued optimum efficiency. This contains:
1. Lubrication
Common lubrication of the blower fan motor bearings is crucial to attenuate friction and stop untimely put on. The kind of lubricant and frequency of software will fluctuate relying on the particular blower fan mannequin and working situations. Seek the advice of the producer’s suggestions for correct lubrication procedures.
2. Cleansing
Accumulation of mud, grime, or different particles on the blower fan blades and housing can impede airflow and cut back efficiency. Periodic cleansing is critical to take away contaminants and keep optimum airflow. Use a smooth fabric or brush to softly take away particles with out damaging the fan parts.
3. Belt Pressure
If the blower fan is pushed by a belt, it is very important examine the belt stress frequently. Improper belt stress may cause slippage or untimely failure, resulting in decreased fan efficiency. Regulate the belt stress in keeping with the producer’s specs.
4. Motor Overheating
Extreme warmth buildup within the blower fan motor can point out issues similar to worn bearings, electrical shorts, or insufficient air flow. Monitor the motor temperature throughout operation and examine any cases of overheating. Take applicable corrective actions, similar to changing bearings, repairing electrical connections, or bettering airflow across the motor.
5. Electrical Connections
Free or broken electrical connections may cause intermittent operation or full failure of the blower fan. Often examine all electrical connections, together with terminals, wires, and connectors, and tighten or restore any unfastened or broken parts.
6. Airflow Measurement
To make sure that the blower fan is delivering the required airflow, it is strongly recommended to conduct periodic airflow measurements. Use an appropriate circulate meter to measure the airflow fee and evaluate it to the producer’s specs.
7. Vibration Monitoring
Extreme vibration within the blower fan can point out imbalances, misalignments, or different mechanical points. Monitor the fan’s vibration ranges throughout operation and examine any cases of extreme vibration. Take applicable corrective actions, similar to balancing the fan, aligning the parts, or changing worn bearings.
8. Acoustic Noise
Extreme acoustic noise from the blower fan will be a sign of issues similar to unbalanced followers, unfastened parts, or airflow restrictions. Monitor the fan’s acoustic noise ranges throughout operation and examine any cases of extreme noise. Take applicable corrective actions, similar to balancing the fan, tightening unfastened parts, or eradicating airflow obstructions.
9. Visible Inspection
Common visible inspections of the blower fan will help establish potential points early on. Test for any indicators of damage, injury, or corrosion on the fan blades, housing, bearings, and different parts. Promptly tackle any recognized points to stop additional deterioration and guarantee optimum fan efficiency.
10. Producer’s Suggestions
Along with the final upkeep practices outlined above, it is very important seek the advice of the producer’s suggestions for particular upkeep tips and procedures. Check with the blower fan’s operation and upkeep handbook for detailed directions and any further upkeep necessities particular to the mannequin.
| Upkeep Activity | Frequency |
|---|---|
| Lubrication | As per producer’s suggestions |
| Cleansing | Often, as wanted |
| Belt Pressure Test | Often |
| Motor Overheating Monitoring | Throughout operation |
| Electrical Connections Inspection | Often |
| Airflow Measurement | Periodically |
| Vibration Monitoring | Throughout operation |
| Acoustic Noise Monitoring | Throughout operation |
| Visible Inspection | Often |
| Producer’s Suggestions | Check with operation and upkeep handbook |
How To Bypass The Board To Check A Blower Fan
Bypassing the board to check a blower fan is a comparatively easy course of. First, you’ll need to find the board that controls the fan. That is usually situated on the facet of the fan or close to the motor. After you have situated the board, you’ll need to establish the terminals that hook up with the fan motor. These terminals are usually labeled “M1” and “M2”.
After you have recognized the terminals, you’ll need to disconnect the wires which might be related to them. Remember to word which wire goes to which terminal, so that you could reconnect them appropriately later. As soon as the wires have been disconnected, you possibly can then join a jumper wire between the “M1” and “M2” terminals. It will bypass the board and help you take a look at the fan motor immediately.
To check the fan motor, merely activate the facility to the fan. If the motor is working correctly, the fan will begin to spin. If the motor doesn’t spin, then it’s probably that the motor is defective and can must be changed.
Individuals Additionally Ask About How To Bypass The Board To Check A Blower Fan
How are you aware if a blower fan motor is dangerous?
There are a couple of indicators that may point out {that a} blower fan motor is dangerous. These indicators embody:
- The fan just isn’t spinning
- The fan is making a noise
- The fan just isn’t blowing air
- The fan is overheating
How do you substitute a blower fan motor?
Changing a blower fan motor is a comparatively easy course of. First, you’ll need to disconnect the facility to the fan. Then, you’ll need to take away the outdated motor from the fan housing. As soon as the outdated motor has been eliminated, you possibly can then set up the brand new motor as a substitute.
How do you wire a blower fan motor?
Wiring a blower fan motor is a comparatively easy course of. First, you’ll need to establish the terminals on the motor. These terminals are usually labeled “M1”, “M2”, and “G”. After you have recognized the terminals, you’ll need to attach the wires from the fan to the corresponding terminals on the motor.
