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I had collected 3 floor standing lovers which had stopped rotating. Had wiped clean and oiled its shaft bearings or even modified the squarish capacitor but nevertheless now not turning. Turned into approximately to throw them away when i thought "... What is the damage in dissecting them, i may want to learn some thing from it...!!" 'S an inner thermal fuse...". I trawled the net for months but just could not find any info on in which the fuse was and a way to replace it. Finally i determined to sacrifice one of the enthusiasts and dissected all the wires going into the windings.? from this got here the schematics of the fan, but most effective up to the motor windings. This instructable is available in 2 components: (i)troubleshooting and (ii)fuse substitute.
Caution: in case you are not skilled in electric repair, please forestall right here. It might be wise to spend the cash for a replacement fan and deliver the faulty one to a person who knows. We are managing 250vac, so be extra careful. You continue at your own dangers. The schematics : at this juncture, i assume you realize and feature confirmed that the timer and velocity selector are operating quality (i.E. Voltages are gift at output of the rate selector (gray, orange and red wires)), see schematics and picture. The colours of the wiring utilized in my fan can be distinctive from yours, so make a notice. ? troubleshooting the thermal fuse : 1. Disconnect power to the fan. 2. Open up the manipulate unit cowl. Three. Take some time to hint the wiring and notice down its coloration and place. It should be just like the schematics above. 4. The usage of the spare wire, join from point “a” to “b” to shunt the fuse. For my case, “a” become the blue “impartial” wire at the terminal block and “b”, the grey twine at the big squarish capacitor. Once performed, ensure your fan (without the blades of course) is resting properly and securely as we are going to strength it up. Five. Join and strength up the fan motor. If the fuse is defective, the motor will rotate, mine did. If it did not, it would additionally be that point “c” was used rather than “b”, since you could not understand which terminal it turned into. No fear. 6. Disconnect electricity. Pass point “c” to “b” and energy up the fan once more. If it nevertheless might not rotate, it’s in all likelihood the capacitor.? 7. Disconnect strength and do away with the spare twine. Replacing the capacitor: 1. Disconnect power. 2. De-solder (or cut) the wires at capacitor terminals and connect them to a new capacitor (identical type). Three. Power up the fan. If the motor nevertheless refuses to rotate then i accept as true with the problem is with the motor windings and it's time to say bye-bye to the fan.
Pass head screw driver flat tip screw motive force scissors or pen knife soldering iron and a few solder some string about zero.5mm in diameter spare twine, approximately 60cm lengthy capacitor 1.4uf 450vac (if required) thermal fuse 130degree c, 1a, 250vac (observe: i ought to handiest find a 2a 130deg replacement @$1.50sgd a bit from the local electronic element shops. Sorry i do not have equal component range from mouser, rs n digikey) .