bigwavedave Posted January 30, 2023 Report Share Posted January 30, 2023 Please help, This is my dilemma: Item: Older powermatic 1.5hp motor on a 64b Problem: Motor bogs down quickly. Solutions implemented to date: 1. New motor and arbor bearings 2. No open or short circuits in windings 3. New belt adjusted and new blade 4. All spins smooth by hand Amps drawn during labor 8amps on one leg 8amps on other leg (wired for 240 It rarely bogged down in past and now it slows down as much as I do. Any solutions I've missed??? Quote Link to comment Share on other sites More sharing options...
wtnhighlander Posted January 30, 2023 Report Share Posted January 30, 2023 Could be capacitors or a centrifugal switch. Here is a pretty good diagnostic guide: https://www.fluke.com/en-us/learn/blog/motors-drives-pumps-compressors/centrifugal-thermal-and-capacitor-switches-cause-most-single-phase-motor-malfunctions Quote Link to comment Share on other sites More sharing options...
drzaius Posted January 30, 2023 Report Share Posted January 30, 2023 Have you measured the incoming voltage? I ask because the symptoms exactly describe how a 240V motor would behave when running on 120V. What is it drawing on no load? Run the saw for a few minutes and then feel around all the bearings for elevated temps. Quote Link to comment Share on other sites More sharing options...
Tom King Posted January 30, 2023 Report Share Posted January 30, 2023 Bogs down doing what? How big of a cut? Blade and fence aligned nicely? Tension in board? Jointed edge first? The operator can easily win a fight with a 1-1/2hp table saw. Quote Link to comment Share on other sites More sharing options...
Magoo Posted February 6, 2023 Report Share Posted February 6, 2023 You stated new motor so I .will assume it has to be external to the motor. You state it sins freely by hand. I’m going to go with your only feeding it 120 volts. You may get an erroneous reading with your current meter. If you measure a rod you line in and get ~240 then maybe your motor, which can be wired for 120 or 240, was set up for 120 out of the box, but if you had this problem before the new motor, could really be your line In voltage. Quote Link to comment Share on other sites More sharing options...
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