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| danny_galaga:
Very commendable work Zebidee. Just be mindful of liability on repaired AC equipment. If the fan housings are plastic, no sweat. But if metal, be extra careful. |
| Zebidee:
--- Quote from: danny_galaga on October 24, 2022, 06:14:30 am ---Very commendable work Zebidee. Just be mindful of liability on repaired AC equipment. If the fan housings are plastic, no sweat. But if metal, be extra careful. --- End quote --- Thanks Danny. You raise a very good point. Even though the fans I was working on have a plastic outer shell, for safety you should check that there is no connectivity between the either of the two AC pins and the metal housing for the coil & rotor. Or any other outer metal parts of the fan. For a basic test to see if the coil/fuse is OK: with meter on ohms, there should be connectivity but some significant resistance (maybe ~1/2 Mohm to several or more Mohms) between the two AC pins while fan is switched to "on" position (but not plugged in, obviously). |
| Mike A:
That just makes it dual purpose. Cooling fan and bug zapper. |
| danny_galaga:
--- Quote from: Mike A on October 24, 2022, 08:34:58 am ---That just makes it dual purpose. Cooling fan and bug zapper. --- End quote --- 😄 On a serious note, I remember a young enthusiastic manager at at tyre shop had repaired a bench grinder himself. Unfortunately an apprentice was electrocuted and died. The manager went to gaol for manslaughter. |
| Xiaou2:
--- Quote ---Things is, you buy a cheap new fan for about $30-$40. It probably has a 1 year warranty. Then it dies after 2-3 years! The manufacturers know this, but they don't care. Because most people will just go get a new fan, so more profits for big business $$$. That is how the system works, but it is very wasteful. With a little maintenance (preventative is best) and/or repair, you can get a full 10 years or even more out of the same fan. --- End quote --- Ive never seen a fan die that quickly. Not ever close to that short of a timeframe. But here is the thing... Lifespan partially depends on Environment. If your fan is in a Hot climate, with lots of Dust... then yeah, that fan is going to be getting seriously clogged up with dust and dirt. The extra heat, will cause the metals to expand, and make things wear quicker. And if the fan blades are coated in oil.. so that Grime sticks to them... it will put additional strain, as well as an Imbalance force, on the shaft and bearings... which will again, quickly wear things out. That said... if the thing cakes up with dust so quickly, it can die well before any bearing wear. Where I live, the climate is mostly moderate... And, I kept my device indoors, in a low dust environment. The fan itself, was also in a box with Air Filters, which prevents the dust from easily clogging up the fan. Im pretty sure it made it well over 8yrs of continuous daily running. |
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