Questions & Answers for: Vitamix variable motor

I have this model and a vita prep 3. Both turn off when tasked with heavy blending. Is there anyway to increase their blending torque capacity? They used to be much better. They are not old machines. ...

variable speed knob, the motor revs way up and then slows way down again until I get to the highest speeds and it stays at a fast speed. The grinding sound is always there at low speeds, even with the

...variable. Is it getting hot when you operate it? If you run a mixer for a long time, the motor will get very warm. On the older units, when the motor overheats, the various parts of the motor and its ...

...variable resistance in the rotary switch but your description sounds more like the main PCB or even the motor both of which are very expensive parts to replace. First of all, check if the warranty is ...

...motor fault, most likely an insulation problem in the armature or the fields. Contact Vitamix for your local authorised service agent. Unless it has been assembled incorrectly it should not be one of ...

variable? replaced switch and potentiometer If you replaced and wired up the switch and potentiometer correctly and the new parts are not faulty that only leaves the Printed Circuit Board as the cause