I just got a WEG Brazilian brand motor on eBay. It's new but was manufactured 3
ago. Instruction states that if stored for two years bearings must be replaced
changed or grease must be totally replaced. Also capacitors must be replaced.
If I do all of the above cost of the motor will probably triple.
Motor runs but seems to be underpowered for it's rating - NEMA 1.5HP
If it turns freely with no signs of binding that is good. I have
equipment with grease that is 10-20 years old and they work ok,
If it starts then the capacitors are doing their job. Capacitors are
for starting not running. If it seems underpowered then it is
underpowered or you are expecting too much. What is the application?
This motor is on a belt grinder. I shouldn't be able to stall it easily
other users. But I can.
Some one suggested it might be my circuitry and wiring.
I have original 1927 wiring in my house. Is it any way I can check if my wiring
handle the load? I have a multimeter.
Can it be that I wired motor wrong?
Jim Behning wrote:
Disclaimer: only attempt this if you are familiar with safe electrical
Set the meter to measure AC volts, and check the voltage at the
receptacle where the motor is plugged in: should be 115-125 V. Check
with the motor off, running, and under load (but not to the point of
stalling). If you see the voltage fall below 110 V, the circuit is
When motor starting my meter shows 70V momentarily(not sure if it's a true
goes blank for a second then 108V and stays there while motor is running with no
Time to call an electrician I guess.
Hey, I learned the hard way. I spent five years getting an electrical
engineering degree. I didn't learn anything practical like this until the
second semester of my senior year when I had a course on motors and
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