two bad feins? this is getting really old.

[knight_toolworks]

I just got my last fein repaired under warranty. the motor was bad. these are the newest electronic speed control ones. well my second one just died.
I am wondering if I am doing it wrong I have one plugged into the other so they both turn on. the load is less then they are rated for. the first one to die was the one plugged into the wall. now the one plugged into that one died. lucky it is on warranty. but this is getting old two 8 month old feins dying within 2 months of each other.

[Brady Watson]

It is not a good idea to daisy chain them together. 2 units per 20A breaker is about right. Every shop that has one plugged into another that I have visited, had them burn out.

Also...since you already know about the Lighthouse motors, why spend another dime on a Fein?

-B

[knight_toolworks]

ya I bet that is it. but they should be ok since the load is less then the rated load. they are only rated for 11 amps and the input on a vac is rated at 15 amps. but maybe it is the way the second vac starts up not having a enough juice maybe.
I have them so I will use them till they need to be replaced. but noise is the big issue. when cutting without the dc I can actually go without earmuffs. my two 220 mores run about 92 db verses about 70 for the two feins. most of the time the feins are enough and they don't pump as much heat out.

[Brady Watson]

Plugging them in directly is the best way to make them last - provided that you are using the right gauge copper as your feed. Think about it...that 14ga cord has to carry the load of 2 Feins...and it's even worse that both cords are longer than they need to be.

It says 15A. But...does it factor in heat, duty cycle and the cord length of the 2nd Fein? I doubt it. They are made for little 5A sanders to plug into them. Just because you can plug it in...doesn't mean you should. It also doesn't factor in that BOTH vacs are being choked to death as a hold-down vacuum.

Longer duty cycles than vacuuming out the car, with no cooling air passing over the motor, on a 30 foot extension cord (15ft ea) running through 14ga copper = bad news. Heat builds up & creates resistance and the higher the resistance, the lower the voltage...which means that there needs to be more amps...which means more heat...and premature death.

-B