Replies

1. 
   jim | Jul 08, 2008 02:00pm | #1

   No, you will also need to replace the starter/switch. 

1. 
   BruceS | Jul 08, 2008 04:25pm | #3

   I put an old Allen-Bradley 3 phase starter with appropriate new heaters on my 240V single phase jointer.  Only used two of the 3 terminals, works fine.Work Safe,  Count to 10 when your done for the day !!

   Bruce S. 

    

2. 
   RickL | Jul 08, 2008 03:20pm | #2

   Simplest is to use a VFD as it takes care of the switch issue. If you gop with a new motor you can use the old switch. A new coil, new heaters and rewiring will take care of it.

   http://www.factorymation.com/s.nl/it.A/id.198/.f?category=32

   Call the tech and give him the specs. Should be able to get one for under $300 for 3 hp.

    

   
   

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   Edited 7/22/2008 8:11 am ET by RickL

1. 
   user-103184 | Jul 20, 2008 10:29am | #6

   A VFD is a good choice, but you CANNOT place a switch* between the drive and the motor, if it is done and power is interrupted between them you run a strong chance of ruining the VFD.BTW I paid less then $350.00 for a 3 HP single phase motor for a unisaw including shipping,another note is mag starter did have to be replaced due to machine being a 480 volt machine & starter was sized for it so it was undersized for 240 volts.

   * You can use existing 3 wire control circuit but the starter needs to be removed.

   I would not buy any current Delta machines now, as they are just Chinese peanut butter cast iron throwaway junk, a "vintage" machine is a better choice offering much higher quality then whats now avail. .

1. 
   RickL | Jul 22, 2008 03:13pm | #7

   I'm well aware of the switch not being used with a VFD. The VFD is the switch.

3. 
   JeffHeath | Jul 08, 2008 09:29pm | #4

   I recently replaced my old phase converter with a brand new one from American Rotary.  After a few months of use, I can tell you that I'm very pleased with the purchase.  I spent less than $500.00, including terminals and wire, and it took only about 2 hours to wire it up.  They give a great diagram (wiring for dummies), and it comes with it's own starter switch.

   The money you save buying a 3 phase machine will more than pay for the converter.

   Jeff

4. 
   dbcabs | Jul 08, 2008 09:35pm | #5

   The main problem with switching motors is that the Unisaw has a special motor with welded brackets on the casing side. I think there is one or two companies that make replacement motors in the $3-400.00 range. I opted to go the rotary phase route 10 yrs. ago and have 4 machines hooked up to it.

   DavidW