Hi, i have a 3 ph tyre changer here which seems to have lost power. Everything works ok when doing small size tyres but the motor wont turn when trying to removing a larger size tyre, it just hums. The motor seems fine when checked with a multimeter. However the switch has one phase live at all times. The other swap as they should do when the switch is operated between forward and reverse. Should the wire that isn't swapped to obtain reverse, be live even when the switch is in neutral? What else could cause a lack of power?
Thanks for any advice help
TH
Thanks for any advice help
TH