Francis Oprenario

• Performed preventive and corrective maintenance on mining laboratory equipment increasing service life, reducing significant downtime, and boosting production.
• Diagnosed and rectified complex faults in digital control and automated systems maintaining process integrity.
• 5 years of experience in accurate troubleshooting of automated and manually operated HERZOG equipment (Boyd Jaw Crushers, Grinding Mills, Conveyor Magazine, Robotic Arms, TGA and Fusion Ovens) enhancing operational reliability.
• Mechanical and electrical expertise in commissioning and decommissioning of mining laboratory equipment with proved compliance of OEM and DMIRS regulatory bodies.
• 5 years of proven experience maintaining equipment parts stock using Control Track Maintenance (CTM) program.
• Supported and trained new Automation Technicians in equipment maintenance, fault finding, and troubleshooting of automated laboratory systems.

Key Skills: CTM, Power Tools, Pneumatic & Electrical systems, PLC, P&ID, Leadership, Compliance, Teamwork

• Performed preventive and breakdown maintenance on HVAC, refrigeration, and electrical control systems
• Diagnosed and repaired mechanical and electrical faults in commercial systems
• Executed refrigerant recovery and recharging in compliance with regulations
• Test & Tag to Australian/New Zealand safety standards
• Installed compressors, motors, ducting, piping, and control systems
• Interpreted wiring diagrams and technical blueprints
• Responded to service callouts and ensured accurate documentation of all maintenance activities.

Key Skills: HVAC & Refrigeration Maintenance | Electrical Fault Finding | Regulatory Compliance | Test & Tag | Installation & Commissioning | Technical Documentation

• Led electrical testing and quality control for refrigeration units prior to dispatch.
• Diagnosed and repaired faults to maintain production targets and product reliability.
• Conducted functional, performance, and electrical safety testing, ensuring full regulatory compliance.
• Test & Tag to Australian/New Zealand standards.
• Supervised production workflow, delivering quality outcomes safely and on schedule.
• Promoted a strong safety culture and drove continuous improvement to enhance team performance.

Key Skills: Electrical Testing & Quality Control | Refrigeration Systems | Fault Diagnosis | PAT & Insulation Testing | Test & Tag (AS/NZS) | Production Supervision | Safety Leadership | Continuous Improvement

• Maintained and troubleshot integrated Building Automation Systems (BAS) across critical airport infrastructure.
• Supported security, fire protection, HVAC, power supervisory, water treatment, runway lighting, backup power, and fuel farm systems.
• Performed preventative maintenance, fault diagnostics, and panel board repairs on electrical and control systems.
• Coordinated hardware and software within central monitoring systems (PDP 11/44 platform).

Key Skills: Building Automation Systems (BAS) • Electrical & Electronic Controls • Fault Diagnostics • Preventative Maintenance • Security & Fire Systems • HVAC Controls • Power & Generator Systems • Central Monitoring Systems • Panel Board Repairs • Safety Compliance