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Forum topic by username posted 08-11-2018 09:44 PM 1901 views 0 times favorited 28 replies Add to Favorites Watch
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username

12 posts in 486 days


08-11-2018 09:44 PM

Topic tags/keywords: powermatic model 66 table saw

Hello-
New to registering for the forum but I have lurked for a long time.

I just bought a PM model 66 5hp 1 phase, when I plug it in it is as if the Start button is pushed in. If I push the Stop button in it won’t stick/stay Off. If I hold the Stop button in it will turn off until I release the Stop button, on release it starts back up running.

My thought it is setup not to utilize the push buttons, is there a simple diagram that shows the different configurations of this panel?

I will attempt to attach pics to show my panel.

Thanks in advance for any & all info.


28 replies so far

View runswithscissors's profile

runswithscissors

3081 posts in 2587 days


#1 posted 08-11-2018 11:43 PM

Sounds very dangerous. I would guess a defective switch. Is it a magnetic switch?

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View BurlyBob's profile

BurlyBob

6770 posts in 2828 days


#2 posted 08-12-2018 02:01 AM

I agree. Sounds like you need a whole new switch setup. I truly envy you finding a T66. My dream table saw.

View MrUnix's profile

MrUnix

7531 posts in 2761 days


#3 posted 08-12-2018 03:31 AM

My thought it is setup not to utilize the push buttons, is there a simple diagram that shows the different configurations of this panel?
- username

It sounds like it’s been wired to keep the solenoid in the starter energized continuously – which could be used in conjunction with some external switches; but that is certainly not typical or recommended. Is this a new to you machine? Did it work properly before and if so, what changed? There should be a block wiring diagram on the inside cover of the starter. If not, let us know the make/mfg of the starter and maybe someone can pull something up for you.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View username's profile

username

12 posts in 486 days


#4 posted 08-12-2018 05:19 AM

Thanks for all of the replies so far. This is new to me but far from being brand new.

I am attaching a few more pics, I didn’t think to look at the backside of the front panel when I opened it to take the internal pics. It looks like there are switch configuration options (based on these new pics). If anyone has any experience or can interpret this diagram & explain which or what configuration my current wiring is I would be very grateful.

View MrRon's profile

MrRon

5783 posts in 3806 days


#5 posted 08-12-2018 11:05 PM

There is an electromagnet that pulls the contacts closed until the off button is pushed and then it de energizes. Sounds like the magnetic coil is open. A new magnetic starter is probably needed.

View username's profile

username

12 posts in 486 days


#6 posted 08-15-2018 04:34 PM

Thanks again for the continued contributions.

I am going to approach this slightly different, I am hoping someone can label my pic with connection descriptions OR fill in the “Connect A to….” “Connect B to….” etc etc. The pics show how it is currently connected, but I am assuming it is not correct.

Connect A to
Connect B to
Connect C to
Connect D to
Connect E to
Connect F to
Connect G to

View username's profile

username

12 posts in 486 days


#7 posted 08-22-2018 01:18 PM

I spent time on the phone & a handful of emails with Powermatic, there isn’t a wire diagram available for this.
If anyone has a 5 hp Single phase, can you open your front switch panel and post a pic? I really just need to confirm the thin Red jumper wires.

Thanks

View Fresch's profile

Fresch

455 posts in 2483 days


#8 posted 08-22-2018 01:44 PM

See in your picture 3rd frame right side wiring diagram, point#3. The left side push button is the start, the right side is the stop, under the start see the open contact? When you push start the power flows through the stop to the coil of the starter, on the starter is that normally open contact (probably on on side or other) that has to close when the magnet pulls in the 240v power to the motor, when it closes it bypasses the on switch and keeps power flowing to the coil of the starter. See your “B” and “F” it looks like it should be wired “B” to “A”. Need a better picture.
But you can use a continuity tester/ohm meter and follow the wiring diagram with the he power off.

View username's profile

username

12 posts in 486 days


#9 posted 08-22-2018 06:11 PM

Solved, cost = $0.00

Take jumper out of F, put into A.

View TheFridge's profile

TheFridge

10859 posts in 2048 days


#10 posted 08-23-2018 02:23 AM

Sweet

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View username's profile

username

12 posts in 486 days


#11 posted 01-11-2019 12:23 AM

I am hoping someone can help out on this one-

For a Baldor 5hp 1Ph- does anyone have a pic they can post of how their Start & Run Capacitors are hooked up? If you can note the Letters or Numbers on each wire, even better.

I will post more detail soon, but I wanted to get the SOS going ASAP.

Thanks

View runswithscissors's profile

runswithscissors

3081 posts in 2587 days


#12 posted 01-11-2019 01:03 AM

When I had a similar problem with a motor (in fact, I had blown the capacitor by mis-wiring it), I took it to a local motor shop, and they had a new cap installed in about 5 minutes, for a charge of $15. Well worth it. And they showed me how to wire it (numbered wires, like yours; I had never seen that before, being used to color coded wiring).

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View username's profile

username

12 posts in 486 days


#13 posted 01-14-2019 11:50 PM

I found the correct Baldor wiring diagram, this confirmed I had replaced & reconnected the capacitors correctly.

Using the wiring diagram, it was obvious that the manual reset button was bad. A new switch is on order. FYI, the button was not popped out.

When I opened up the motor I noticed the centrifugal switch had previous damage and had been repaired (w/ super glue), so I ordered a new one.

Opening up this motor & doing some basic wiring checks was a good learning experience. I am very surprised just how simple these motors are.

View ocean's profile

ocean

192 posts in 1395 days


#14 posted 01-15-2019 12:58 AM

Bunch of helpful people on this forum and with the internet – there isn’t much you can’t figure out.

-- Bob, FL Keys

View username's profile

username

12 posts in 486 days


#15 posted 01-25-2019 05:50 PM

Update-
I ordered the motor reset button, but the seller has not sent it & is not responding to any emails. So, back to trying to find a replacement button. A quick search reminded me that I couldn’t find one a week or so ago. Does anyone have a AC motor source? Or does anyone have an equivalent replacement part #?
Here is mine-

showing 1 through 15 of 28 replies

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