Millwrights inspect and maintain all types of electrical equipment on machinery and in beneficiation plants.

They are also responsible for the mechanical maintenance of machinery, including the assembling and fitting of new components and equipment.

The following modules are done during training:

Basic Training

Electrical Training
  • Theory:
    Units and prefixes
    Ohm- and Kirchoff's laws
  • Instruments:
    Use of electrical measuring instruments.
    Testing of cables
    Determining of the layout of resistance circuits
  • Buildings:
    Lights and lighting circuits
    Construct and wire installations
    Testing of single phase installations
    Single phase motors
    Three phase motors
  • Relays:
    Reading of electric circuits
    Determining of the operation of a circuit from a circuit diagram
    Use of retaining circuits
    Use of electrical- and mechanical interlocking
Mechanical Training
  • Make and fit a key
  • File and saw a workpiece
  • Drill and tap holes
  • Overhaul valves
  • Maintain and align couplings
  • Tension and align V-belts
  • Lift and move equipment

Advanced Training

Electrical Training
  • Semi-automatic motor starters.
  • Fully-automatic motor starters.
  • Resistance starters connected to slip-ring motors.
  • Liquid starters connected to slip-ring motors.
  • Pole changing (two speed) motors.
  • Direct current machines.
  • Ward-Leonard speed control.
  • Energy meters.
  • Load balancing.
  • Testing of three-phase installations.
Electronic Training
  • Soldering of components.
  • Identification of resistors, diodes and inductors and the use there-of.
  • Using an oscilloscope.
  • Construct rectification circuits.
  • Identify and use Zener diodes.
  • Construct a voltage doubler.
  • Identify transistor action and transistor configurations.
  • Test regulated power supplies.
  • Test thermistors and thermistor phase control
  • Explain and apply PLC operating principles.
Mechanical Training
  • Principles of pneumatics
  • Principles of hydraulics
  • Line up a fluid drive coupling
  • Overhaul hydraulic brakes
  • Overhaul an electromagnetic brake
  • Maintain clutches
  • Maintain gearboxes
  • Overhaul a multi-stage centrifugal pump

Final Training

During Final Training, learners receive intensive training to prepare them for the Trade Test. Training during this period includes all modules trained in during the Basic, Advanced and Electronic training phases.

Additional electronic modules can also be completed during this period should his/her company request/require this:

  • Test an amplifier.
  • Using a transistor as a switch.
  • Test multi-vibrators.
  • Identify operational amplifiers.
  • Construct a continuity tester.
  • Test a field effect transistor.
  • Test logic gates.
  • Fault-find circuits.
  • Test electronic systems.

For more information and specific modules, please feel free to contact CTC's engineering (administration) Department.

Any part of the course can also be done as per client specification.

The electronic course can also be done as a separate course (see Additional Courses).