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Once the lathe motor is up to speed it is fine. If I don't have any other equipment running, the phase converter gets noisy, slows down and sounds really, really overloaded as it starts to spin up the lathe motor.
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Harrison m400 lathe manual pdf how to#
What is the next step in troubleshooting? It appears that the 4 position rotary switch has 110V leads going to the contactor block and power leads going to the motor, the high voltage portion of the switch seems to work fine, but I'm not sure how to check and determine whether my problem is in the contactor block or the 110V portion of the rotary switch.Īnother issue I am seeing is that the motor is supposed to be a 5 hp motor, but it is causing my rotary phase converter (rated for starting a 5hp motor and a total connected load of 10 hp) to really struggle to get the lathe started. I can manually press the contacts into position and they will latch once I push them in contact and the motor runs fine. I have replaced it with a new transformer and now have power to the contactor block. When I first powered it up, I found out that the control voltage transformer wasn't working (it looks like it got cooked). Motor speed and direction is controlled with a four position rotary switch. The lathe has a 220V 2 speed 3 phase motor. I recently purchased a 15" Harrison lathe which had been in storage for a few years.