Wutthichai Doemthamram

A highly skilled and multi-talented Maintenance Technician and Supervisor with over 6 years of direct experience in industrial plants. Possesses comprehensive multi-skilled expertise encompassing Electrical, Mechanical, Pneumatic, Hydraulic, and PLC systems. Deeply proficient in executing high-level Preventive Maintenance (PM) and Breakdown Maintenance, with strong capabilities in Root Cause Analysis to troubleshoot machinery and utility systems down to the component level.

Holds a National Skill Standard Certificate in Electrical Work.

Electrical Maintenance Supervisor at Sugarcane Ecoware Co., Ltd. (2020-01 – 2026-04)

• Planned and supervised 1-phase and 3-phase plant electrical wiring; calculated cable sizes based on motor current load; installed electrical conduits (EMT/PVC) and cable trays.
• Installed and maintained MDBs, Load Centers, and Motor Control Panels; monitored voltage drops, phase balance, and Power Factor / Capacitor Bank systems.
• Overhauled electric motors; replaced bearings using press and induction heater techniques; performed insulation resistance testing (Megger Test) and winding resistance measurements.
• Troubleshooted and maintained industrial sensors (Proximity, Photoelectric, Limit Switches) and control signal systems.
• Monitored and tested I/O signals; performed basic PLC logic modifications (Interlocks, Timers, Counters) for Siemens S7-200 / S7-1200, and monitored system alarms via HMI.
• Overhauled various industrial pumps (Centrifugal, Vertical, Jet, and Screw Pumps); replaced mechanical seals and performed motor-pump shaft alignment to minimize vibration.
• Overhauled and repaired gearboxes; inspected gear conditions; diagnosed and resolved backlash and lubrication failures.
• Maintained linear guide rails and robotic arms (LM Guides, Linear Bearings, Harmonic Drives, Robot Arm Bearings); conducted precision checks and alignment setups.
• Disassembled, repaired, and reassembled pneumatic and hydraulic cylinders; replaced piston/rod seal kits and cleaned oil sludge from control valves.
• Repaired and tested solenoid valves and directional control valves (24VDC/220VAC); installed air regulators and managed pneumatic knife gate valves.
• Supervised and maintained plant utility systems including boilers (LPG / Biomass / Heat Transfer Oil), air compressors, and vacuum pumps.
• Planned and executed PM for power generators; inspected fuel systems and batteries; conducted no-load and load testing.
• Performed fabrication welding (Arc, Stainless Steel, Cast Iron) and shaft overlay welding for lathe machining.

High Vocational Certificate (Diploma) in Electrical Power – Khu Mueang Technical College (2019)

Vocational Certificate in Electrical Power – Khu Mueang Technical College (2016)