Power Distribution & Motors
Troubleshoot and maintain AC/DC motors and their associated Variable Frequency Drives (VFDs), which control the speed of conveyors, grinders, and centrifuges.
Maintain and repair Low Voltage (LV) distribution boards, switchgear, and control panels.
Perform thermal imaging on electrical panels to identify loose connections or overheating components before they fail.
Automation & Sorting Systems
Maintain NIR (Near-Infrared) Sorters and Colour Sorters: Clean lenses, calibrate sensors, and troubleshoot the high-speed pneumatic ejector valves.
Calibrate and repair field instruments: Level sensors(ultrasonic/capacitive), flow meters, pressure transmitters, and temperature probes ($PT100$) in the hot-wash tanks.
Troubleshoot PLC (Programmable Logic Controller)I/O modules—specifically identifying faulty inputs/outputs to keep the automated sequence running.
Safety & Compliance
Ensure all Emergency Stop (E-Stop) circuits and safety interlocks (on grinders and centrifuges) are fully functional and tested regularly.
Enforce Lock-Out/Tag-Out (LOTO)
procedures for the entire maintenance team during repairs.
Maintain the plant’s lighting, grounding (earthing), and lightning protection systems.
Preventive Maintenance (Electrical)
Regularly clean electrical cabinets to prevent dust build-up (especially “ PET fines ” which can be conductive or flammable).
Check the integrity of cables and conduits, especially in the “ Wet Areas “ of the plant where moisture and Caustic chemicals can degrade insulation.
Technical Skills:
Schematics: Ability to read complex electrical drawings,P & IDs, and logic flowcharts.
Troubleshooting: Expert use of Multimeters, Insulation Testers(Megger), and Clamp Meters
PLC Knowledge: Familiarity with Siemens (TIA Portal),Rockwell (Studio 5000), or Schneider systems.
Instrumentation: Knowledge of loop testing (4-20mA signals)and sensor calibration.