Est. 1998 — 27 years of woodworking knowledge
Motor help please
Howard Pollack
I have an old disk-belt sander that has worked fine for many years. Yesterday I turned it on an it started to run and immediately stopped. I know nothing about motors and how to diagnose/fix it. Any help will be most appreciated.
-Howard
Re: Motor help please
Ralph Lipeles
First, we need to know what kind of motor it is. AC, DC, Capacitor start? Can you post a picture of the motor nameplate. Also, sometimes the motor has a wiring diagram on it. If so, post a copy of it.
Re: Motor help please
Keith Newton
Do you have a meter to test with? If not, this is the time to get one and learn to use it. You can get a decent one at the big box stores for <$30. It all comes down to "The process of elimination". First make sure you have power to the outlet, > switch > leads in the end of the motor. If its all the way to there, then check to continuity in the windings.
Someone recently ask about capacitors, then on down in the thread, someone posted a really good youtube for testing that as well as other parts of the motor.
Re: Motor help please
Larry verhff
the first thing to do is unplug the motor then take off the cover on the start/stop switch and then blow out all the dust and as you are doing that push the start and stop switch as to get the dust from between the points then nput cover on and plug it in and see if that works. Sometimes the dust gets between the points. Good luck LarryV
Re: Motor help please
John K Jordan
See if it has brushes that need to be replaced.
Re: Motor help please
Howard Pollack
I couldn't get a picture, but here is the info. on the plate:
output: 1/2hp
volt: 110
amp: 8
phase: 1
pole: 4
temp rise: 60C
weight: 12.4 kg
HS Class : A
Date: 1988
I hope that this is helpful. Thanks -Howard
Re: Motor help please
mark
I have had my tablesaw motor and thinline bench grinder motor both stop in last 6 months. In both cases it was a case of expired/ damaged capacitors. About $20 each to replace. Some good info on Youtube about replacing and discharging ( very important) capacitors.
Re: Motor help please
johannaj
I was hoping my bandsaw motor problem was a capacitor - no such luck - it was the winding. I had it repaired for about $50.