Thread: Fine dust extraction.

Haven't seen one like that from a evaporative cooler for a good while so it's likely to be quite old, but that doesn't mean it's no good. It is likely to be a three speed motor where there is a separate winding for each speed. There was probably a wiring diagram on the body of the evaporative cooler somewhere - you should have saved it. Mount the motor in a vice so it doesn't get away, connect the earth, the blue is most likely to be the neutral so connect it to the blue, or black, depending what wiring system you're using. You shouldn't have too much trouble working out which speed is which by connecting the other wires in turn to the active, red or brown, on your power lead. Usual disclaimers.

Cheers,
David

Originally Posted by aldav

Haven't seen one like that from a evaporative cooler for a good while so it's likely to be quite old, but that doesn't mean it's no good. It is likely to be a three speed motor where there is a separate winding for each speed. There was probably a wiring diagram on the body of the evaporative cooler somewhere - you should have saved it. Mount the motor in a vice so it doesn't get away, connect the earth, the blue is most likely to be the neutral so connect it to the blue, or black, depending what wiring system you're using. You shouldn't have too much trouble working out which speed is which by connecting the other wires in turn to the active, red or brown, on your power lead. Usual disclaimers.

Cheers,
David

thanks David. I recall there was a diagram on the inside of the housing near where the controls were. But sadly wiring diagrams have always baffled me with their little squiggles and stick trees. If there are only 3 wires, I'm a genius. Any more and I go into mental meltdown. 😳😰. Having 5 is cruel and unusual punishment. I'll have another go with rubber gloves and rubber shoes on. Disclaimer noted and accepted. 👍 By the way. The unit was working fine when I removed it. Replaced by a new reverse cycle modern aircon doohickey.

Originally Posted by Shedhand

The sun was shining here yesterday (and today too &#128526 and I looked up and saw the air in my shed was filled with very fine wood dust.

Sure it was wood dust and not pollen?

Evaporative air cons makes very good ventilators. In the WW section of our mens shed (14 x 7 x 4.8m) we are still awaiting the installation of dust extraction. Sometimes I walk into the shed and the air is a fog of fine visible dust. I turn on the EAC fan on and open the doors and within 5 minutes no dust can be seen. Of course there will still be some dust there but nothing like the amount there was in the first place.

Originally Posted by Shedhand

thanks David. I recall there was a diagram on the inside of the housing near where the controls were. But sadly wiring diagrams have always baffled me with their little squiggles and stick trees. If there are only 3 wires, I'm a genius. Any more and I go into mental meltdown. . Having 5 is cruel and unusual punishment. I'll have another go with rubber gloves and rubber shoes on. Disclaimer noted and accepted.  By the way. The unit was working fine when I removed it. Replaced by a new reverse cycle modern aircon doohickey.

I would't recommend "experimenting" with any connections even using rubber gloves and shoes or you may end up with a physical meltdown, a permanently damaged the motor, or worse - see below.
Apart from multiple speeds, the wires could simply be for the motor run and start coils (2 wires for each coil + earth) and require connections to run/start capacitors.
If so the wires would need to be joined to the mains, caps and each other in a specific way.
I could provide further advice but unless you can manage a circuit diagram it would be negligent of me to do so.

BTW rubber shoes are completely useless if you accidentally touch a live active connection with one part of your body and the neutral or earth with another. Current will still flow between these connections and cause serious injury and even death. Usually these wires end up being touched with parts of the right and left hands meaning the current passes across the heart causing heart seizure.

Ok. I read.the mods edit. Im fine with that and i accept total responsibility for anything i might do with the advice given.
Anyway, o got the motor turning over ok. Turns out the yellow from the motor is the active - blue is neutral. Taped off the red and orange (seperately of course). Put the fan blade back on and plugged it in. The motor hummed so i gave the blade a manual turn and away it went. Suck the head off a beer at 40 paces. But once i install in the external wall i wont be able to giv it a manual spin to start it. What is needed for it to start spinning without a manual spun. It has its own power point. The motor is a Matsushita 240v 50hz -Cont - 0.1 kW
If its too technical I'll just dump it and save for a proper extractor or dusty.
Cheers