Apprentice Program - Joint Apprentice Training Committee of the Elevator Industry
Descriptions and credit recommendations for all evaluated learning experiences
Course 1 and 2: Upon successful completion of the course, students will be able to: apply basic math skills to problems and needs of maintenance, repair, and conversion work in the elevator industry; explain basic electrical concepts and apply these concepts to work situations; describe the functions of the component parts of hydraulic, geared and gearless elevator systems; demonstrate safe work practices. Course 3: Students will be able to: explain applied electricity as it relates to the elevator industry; and explain the construction and function of AC and DC motors and generators. Course 4: Students will be able to: explain the use and operation of transformers, solenoids, relays, starters, series, parallel, and compound wound motors; compare characteristics of AC and DC motors; and use Ohm's Laws to find current and voltage in series and parallel circuits.
Course 1 and 2: Major topics include: structure of matter; the atom; conductance; electric current; producing and using electricity; magnetism; measuring electrical quantities; resistance; Ohm's Law; series circuits, parallel circuits, and series parallel circuits; circuit failure; electrical meters; small tools, their uses and misuses; elevator systems (the machine room, traction machines, hydraulic machines, generators, motors and brakes, the controller, selector, governor, ropes, sheaves and guide rails, stopping and leveling devices, cab equipment, pit equipment); safety circuits, motors and brakes, directional control, protective devices, stopping circuits, hall buttons, interlocks; safety attitudes and practices. Course 3: Major topics include: Magnetism; electromagnetism; EMF generation; DC generators; types of generator windings; DC generator regulation; DC motors; AC motors (rotating two-phase and three-phase). Course 4: Major topics include: Solenoids; relays; capacitors; series, parallel, and compound motor windings; purposes and basic operation of motor starters; comparison of AC and DC motors; use of Ohm's Law to solve series and parallel circuits, recognition of blueprint symbols.
Major topics include: guide rails; buffers; governors; safe ties; wire rope; roping traction machines; roping drum machines; compensating cables; governor cables and tiller ropes; flexible and roller guides; guide shoe problems; car frames; counterweights; car doors; hoistway doors; door operator; traveling cables; selector drives; troubleshooting electric motors; motor line-ups; brakes; commutator and brushes; elevator machines; worm and gear; thrust bearings; sheaves; installations; gearless machines; dumbwaiters; escalators; rigging; hydraulic elevators. Shop exercises include: rails, buffers, governors, safety, wire rope, car guide shoes, car frames and counterweights, doors, electric motors, brakes, and machine operation.