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overload protection switch problems

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Forum topic by Jim55 posted 02-08-2020 01:51 AM 339 views 0 times favorited 7 replies Add to Favorites Watch
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Jim55

194 posts in 2954 days


02-08-2020 01:51 AM

Hey’all,
I have a Hitachi C10fl stationary table saw. Have had it a good 10 years at least and it has stood me in good stead. But, the overload protection switch is pooped out. Can’t hardly make a cut with it any more.
I have had the motor and some other parts checked out and it’s down to this.
The protection is a separate, push reset button with 3 prongs. This saw has long since been discontinued and parts sites don’t have it any more that I have been able to find.

But… a rest button can’t be all that proprietary or so I would think. Can anybody tell me of a part that would work in its stead? I’d be much appreciated. (I suppose it needn’t even be round either- as long as the prongs fit.


7 replies so far

View JohnMcClure's profile

JohnMcClure

1100 posts in 1528 days


#1 posted 02-08-2020 02:32 AM

There are some electricians around here who can probably help.
I’m just here to bump the thread up.
And fwiw an overload interrupt isn’t typically necessary so you could probably just bypass it.

-- I'd rather be a hammer than a nail

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PPK

1803 posts in 1697 days


#2 posted 02-08-2020 02:53 AM

Yeah, I’d just bypass it and keep on Keeping on!

-- Pete

View MrUnix's profile

MrUnix

8244 posts in 3087 days


#3 posted 02-08-2020 04:28 AM

It’s a klixon type protector... a quick google search turns up a lot of possible sources – although you will need to identify which one you have using the numbers on the front of yours (sized based on motor load). In the mean time, you can bypass it and make sure you don’t push it too hard.

Cheers,
Brad

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

View Jim55's profile

Jim55

194 posts in 2954 days


#4 posted 02-08-2020 01:14 PM

OK. How do I go about doing that, and what is the risk to the motor if I do that?

View Madmark2's profile

Madmark2

1729 posts in 1476 days


#5 posted 02-08-2020 04:05 PM

Flames, but only if there is a real issue with the motor and not just a soggy thermal breaker.

In an old saw the bearings could be iffy. Try spinning the motor by hand to make sure it spins freely.

Note the wiring and remove the switch after its tripped. Ohm the connections and figure who is connected (if any). Then reset the switch, re-ohm, and see what is connected. Hard wire the wires to match the switch connections and volia!

-- The hump with the stump and the pump!

View LesB's profile

LesB

2630 posts in 4331 days


#6 posted 02-08-2020 07:32 PM

I would not suggest a bypass as a permanent solution. Overload switches definitely weaken over time, especially if they have been tripped before. Just replace it ad Brad suggested… they appear to be about $25.

-- Les B, Oregon

View Jim55's profile

Jim55

194 posts in 2954 days


#7 posted 02-08-2020 08:26 PM

I’ll go with a replacement since I have decided to get a whole new table saw. This Hitachi has done very well for me but, has one ‘fault’ I just can’t tolerate any more- it is equipped with a splitter and I really, I mean REALLY want to go with a riving knife.
I am strongly inclined toward the Delta 36-725 from Lowes for $599. I get a 10% discount so that helps too. It has been on the market for some years now and seems to be largely well thought of. Other sellers that have these all want significantly more money for them.
Once I have the Hitachi repaired, I’ll sell it to recoup some of my expense.

Anyway, thanks to those who replied.
jim

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