Transfers ToNot transferableDescriptionApprentice. This course provides an introduction to variable frequency drives (VFD's), applications of use, and limited troubleshooting. Parameterization for startup, open loop, closed loop, floating point, and preset speed profiles are covered. It is sponsored by the United Association of Union Plumbers, Fitters, Welders, and Service Technicians and is for apprenticeship only. Course enrollment is limited to those who have been accepted by the union local responsible for the section. 