How To Replace Fuse In Electric Fan

How To Replace Fuse In Electric Fan – I collected three fans of the place that stopped the weapons. Cleaned and greased his shaft bearing, even with squaring capability stored, but still wouldn’t turn. “… What’s wrong with dissecting, I’ll learn something here…!” It was as they imagined.

I asked a few service guys and all I got was a small “… there is an internal chocolate fuse…”. I’ve searched the web for months but can’t find any information on where the fuse is or how to replace it. I finally decided to sacrifice one of the fans and disconnect all the winding wires.

How To Replace Fuse In Electric Fan

(Note: I just got a 2A 130deg replacement from a local electronics store @$1.50SGD for cash. Sorry Mouser, I don’t have the corresponding part number from RS n Digikey)

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It’s wiser to spend money on a fan and give it to someone who knows what’s wrong. We are dealing with 250VAC so be extra careful. Proceed at your own risk.

Here, I assume that you know and have verified that the timer and the speed selector are working properly (ie there are voltages at the output of the speed selector (grey, orange and red wires), see the schematics and the picture).

The colors of the wiring used on my fan may be different than yours, so please note.

3. Take the time to outline the wiring and note its color and location. They should look similar to the schematics above.

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4. Using the spare wire, connect point “A” to “B” as a shunt fuse. In my case, the blue “neutral” wire on the terminal block is “A” and the gray wire on the big square capacitor is “B”.

Once that’s done, make sure your fan (without the blade of course) is resting nice and secure while we continue to power it up.

5. Connect the fan and turn it on. If the fuse blows, my motor will have webs, mine. Otherwise, “C” will be entered instead of “B” because you won’t know whose termination it is. So don’t worry.

6. Turn off the power. Move point “C” to “B” and turn the fan on again. If it still doesn’t spin, it’s probably the capacitor.

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2. De-solder (or cut) the wires on the capacitor terminals, and apply them to the new capacitor.

3. Power fan. If the motor still won’t turn, I believe there is a problem with the winding motor and it’s time to say goodbye to the fan.

1. To make it easier to replace the fuse, you need to free the motor from the power unit. Arm harness with 5 wires to motor housing. By repeating this harness, I found the ground (green/yellow) and neutral (blue) wires starting at the motor housing, ending at the terminal block, and three (grey, orange, red) that ending with the speed selector.

2. Remove the ground and neutral wire (no cutting necessary) from the terminal block. De-wire the solid gray, orange, and red at speed, marking the first position.

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(You may have noticed that I cut the whole harness about 10cm from the big motor…err…but I decided to do it before)

3. Using the flat tip alone as a lever, remove the motor housing rod from the control unit.

5. Remove the metal housing screws. Carefully remove the twisted rotor and windings, leaving a bit useless in the harness.

6. The bends are tied with strings, and they are smeared with a kind of milk. Some of them (see the “X” points in the picture) need to be cut with a chisel or a pair of scissors. Look at the bulge (where the fuse is) and note where it ends.

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7. Carefully cut the black sheath to expose the brown woven covers and tie the strings.

8. Disconnect the blue neutral wire from the harness to the coil. You’ll notice that it ends inside the largest shield at the top. This is our goal. Attach the shield to it and cut the ropes.

9. This large round roof holds a fuse and another cover. Use your fingers to lift it up and pinch the edges to give it a tubular shape.

10. Gently remove this shield by tightening, pressing and pulling, exposing the thermal fuse. Place the shield after use.

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11. Note that one of the leads is protected by a fuse to prevent electrical contact. Cut the side of this shield about 10mm long. Reveal the lead through this cut.

12. Once both leads are exposed, cut as close as possible to the fuse. This will provide enough space to secure the new fuse.

17. Cover the new fuse assembly as tightly as possible. Repeat the black cap and string again. Make sure there is no black cord or sheet lying around the rotor area.

21. Reconnect the wiring harness and reconnect the ground and neutral wires to the terminal block. (I had to solder and insulate all the wires with heat shrink tubing. I also had to move the oscillator so they wouldn’t rub against each other)

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I haven’t used the lacquer to protect my curves, I’ve been running 6 hours a day for almost 2 months.

To prevent overheating, I changed the timer to disable the constant “on” reading. By using a timer mechanism, there is a quiet interval when there is no one in the room or when there is no intention to use the fan for a while. The Home Improvement Stack Exchange is a question and answer site for contractors and serious hobbyists. It only takes a minute to sign up.

I have a small portable fan that, for reasons I can’t trace, has a fuse inside the plug. The fan stopped working due to a blown fuse. At the store, I couldn’t find a small fuse like the one in the plug, but my co-worker suggested I look at Christmas lights because those fuses are often the same size. Sure enough, I found the size of a spare fuse in a box of unused Christmas lights. The only difference is that the fuse is labeled 3 amps and the fan plug has this text:

So I’m wondering what the risks are in using a 3 amp fuse here. Maybe hurt the fan? Can the house burn down? What else?

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Disclaimer: I am a guest from Electrical Engineering SE. Safety ratings are always recommended with some risk. Whether this is a significant risk can vary greatly depending on the individual situation. Take this answer with extreme caution.

I don’t think this difference will cause any significant issues, since any hard-wired 3 amp fuse will fail just as quickly as a 2.5 amp fuse, for most utility purposes.

In large or uncertain situations, it’s wise to be mindful of safety concerns. In this case, the 3 amp current will likely reach the limit of the branch circuit the item is connected to before the 3 amp fuse blows.

If the offset in the estimate between two different values ​​of the fuses is large, it can be a cause for concern, but we must consider that the knowledge of the fuses is not exact. In their simplest form, their tolerances can vary greatly.

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According to the “Litterfuse” device in section 1 on page 4 of this PDF, it only changes with temperature

The fuse rating can be changed by 25%. Section 3 on the same page also shows where a circuit meant to blow a fuse at 2.25 amps actually needs to use a 3 amp fuse.

Normal Operating Current: The current rating of the fuse is usually reduced by 25% for operation at 25°C, to avoid harmful over-suppression.

Considering this, the 2.5 Amp specification is 16% smaller than the 3 Amp fuse you want to use, seems trivial. Based on the PDF above,

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A 2.5 amp fuse can pass more than 3 amps of current if the fuse is too cold.

Spindle selection at local hardware stores is often limited to the types used by customers in the area. Instead, you should consider looking at a supplement that you can access online to gain access to a larger selection.

If I’m not mistaken, you’re looking for a 3.6x10mm micro fuse. You will find many fuses rated at 2.5A at 125V or 250V.

You are at risk of your house burning down, and your insurance policy may be void because you know you could cause a fire.

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