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15" planer slow motor start

2K views 10 replies 9 participants last post by  paulnwa 
#1 · (Edited by Moderator)
I bought my 15" Grizley -Delta clone and it bogged down when more than a 1/4 turn of the wheel. Thought it was the blades. Replaced them and set up the planer so all rollers etc were in the "correct" placement.

When I start the planer it takes maybe 10 seconds for the motor to get going at full speed. It seems to have slowed down a bit with the colder temps here. Mid to upper 20s. It seems that even with the sharp knives it still should take more than 1/4 turn planning some cedar.

Any idea why the motor would take so long to get up to speed? Belts seem to have a bit more flex than I would like, but they are not slipping when it bogs down.

I'm a bit stumped. I thought motor brushes, but it starts turning right off the bat, but takes time to get up to speed.

Thanks Brian

Milwaukee
 
#6 ·
It is on an extension cord. I am running off one outlet in the garage switching each machine onto the cord. I'm not sure the belt is tighter than "a gnat's rosebud in January" but do not see any slippage when it is running.
The label says 2 HP 110/220 Phase 1 cycle 60HZ.

Any testing I can do?

Thanks

Brian
 
#7 ·
Unplug the motor and take off the lid of the connection box on it. There is a wiring diagram for the two voltages inside or outside. Check to see what it's wired for and check the connections.

We'll get this figgered out!

I am curious if the cold weather is coincidence or the cause of the problem, but I agree it sounds more like a voltage issue. It should come up to running speed in a couple of seconds.

Just thought of something else…could it be a bearing problem in the planer? Again unplugged, loosen the belts and turn the cutterhead to see if it's turning freely and quietly.

Kindly,

Lee
 
#9 · (Edited by Moderator)
If the motor is wired 240V and being run on 120, I'm not sure it would ever get to full speed. I've only seen that happenstance twice, and in both cases the motor would run very, very slowly. You may have a capacitor that's went bad. They are fairly cheap, so if that's the problem it shouldn't be expensive to fix. Have you seen the planer run correctly? You mentioned you bought it and this happened.
 
#11 ·
You say you are running on an extension cord. 220V extension cords aren't very common, so my guess is that you are running on 110V. What is the wire size of the extension cord? It is possible that your extension cord is too small or too long, causing a voltage drop. Also, a 2HP motor running on 110V will pull a lot of current-probably more than 15A (and way more than that at start), requiring at least a 12ga. extension cord.
 
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