My leaf blower's motor stopped working the other day and causes the circuit breaker to trip every time I switch it on. It's a 1 HP AC Motor. I unassembled it and cleaned it since it was horribly dirty but that didn't solve the problem. There is a small board with the wires welded on to it right before the motor but I don't know what it is. It has like four tiny black cylinders and two orange round things. Could it be the problem, and can the motor run without it if I connected the motor wires straight to the plug?
2007-08-18 10:29:40 · 5 answers · asked by jetengine767 3 in Home & Garden ➔ Maintenance & Repairs
there are brushes and they look fine
2007-08-18 11:27:16 · update #1
Do not bypass the control board, it won't work. If the motor can be spun easily by hand, it is an electrical problem and for a small 1 HP motor, not worth the trouble. If it does not spin easily by hand, then it is a bearing or some mechanical fouling and it may be repairable. Also check the power cord, make sure it is not frayed or crimped.
2007-08-18 13:16:35 · answer #1 · answered by john the engineer 3 · 0⤊ 1⤋
With a permanent magnet DC motor (like from a battery powered toy) this will work fine. An AC motor is less likely to work, in normal operation the magnetic field that makes an AC motor work is produced by the electricity going into it, so if no power is going into it there is no magnetic filed to make it act as a generator, actually there might be a little stray magnetism or there are methods of getting it started with a pulse of external power, but the PM DC motor will be easiest . In short,yes you can use a motor for a generator but not "just any motor"
2016-05-22 05:27:42 · answer #2 · answered by ? 3 · 0⤊ 0⤋
the black cylinders sound like diodes and as Sean says convert a/c to d/c. Diodes should only pass current in one direction, operating correctly when tested with a multimeter on an ohm setting should read on the dial in one direction and not move the dial when the leads are reversed.
If you test them and find one faulty they are cheap to buy in any electronics shops.
2007-08-18 14:28:32 · answer #3 · answered by Anonymous · 1⤊ 1⤋
The black cylinders are diodes that rectify the a.c. to d.c. One or more is blown causing a short at your fuse panel. You need a new board, the motor may be o.k.
2007-08-18 13:33:52 · answer #4 · answered by Sean 2 · 0⤊ 2⤋
the small board is the control circuit, , i,d check the brushes, they will be located in the rear of the motor, , if there's no brushes, its a capacitor start, that's what the small black cyls are,
2007-08-18 11:19:36 · answer #5 · answered by William B 7 · 0⤊ 1⤋