Senior HVAC Technician

Job Summary

Senior HVAC Technician

VRF (Variable Refrigerant Flow) systems

Qualifications & Education

• **Diploma**
• or

ITI (Industrial Training Institute)

Refrigeration

Air Conditioning

Mechanical Engineering

Work Experience

• Minimum
• 10 years of hands-on experience
• in the

Oil & Gas sector

• (onshore or offshore), specifically working with
• chiller systems
• and
• VRF technology
• .
• Proven track record of working on large-capacity centrifugal chillers (e.g., Carrier, York, Trane, Mitsubishi, Daikin) and multi-zone VRF systems.

Technical Knowledge & Skills

• **In-depth knowledge**
• of centrifugal chiller operation, including refrigeration cycles, oil management, purge units, and electronic expansion valves.
• Strong understanding of
• VRF systems
• (heat pump and heat recovery), including branch controllers, refrigerant piping design, and addressable controls.
• Ability to read and interpret:
• **P&IDs (Piping and Instrumentation Diagrams)**
• **Electrical schematics and wiring diagrams**
• **Manufacturer technical manuals**
• **Mechanical engineering drawings**
• Skilled in using diagnostic tools such as:
• Digital manifolds, multimeters, megohmmeters, thermal cameras, refrigerant leak detectors, and HVAC software interfaces.
• **Excellent troubleshooting and problem-solving skills**
• – able to diagnose complex faults involving mechanical, electrical, and refrigerant circuits simultaneously.

Installation & Commissioning

• Oversee or perform installation of new centrifugal chillers and VRF systems in accordance with engineering drawings and manufacturer specifications.
• Support commissioning activities including pressure testing, evacuation, charging, and system balancing.

Maintenance

• Perform
• routine inspections
• (daily, weekly, monthly) of chillers, VRF outdoor/indoor units, compressors, condensers, evaporators, cooling towers, pumps, and AHUs.
• Execute
• preventive maintenance
• schedules: cleaning coils, changing filters, checking refrigerant levels, lubricating moving parts, inspecting electrical connections, and verifying control sequences.
• Carry out
• corrective maintenance
• to quickly restore failed equipment and reduce operational downtime.

Repair & Replacement

• Diagnose and repair/replace faulty
• compressors
• (scroll, screw, centrifugal),
• pumps
• ,
• motors
• ,
• starters
• ,
• contactors
• ,
• capacitors
• ,
• fans
• ,
• belts
• ,
• bearings
• ,
• valves
• (solenoid, thermal expansion, shut-off), and
• control components
• (sensors, thermostats, PLC modules).
• Recover, recycle, and recharge refrigerants (e.g., R-134a, R-410A, R-32) following environmental and safety regulations.

Documentation & Reporting

• Maintain accurate logs of all maintenance, repairs, refrigerant usage, and parts inventory.
• Prepare daily and weekly service reports for supervisor review.
• Report major faults, safety incidents, or recurring issues with recommendations for long-term solutions.

Safety & Compliance

• Strictly follow
• Oil & Gas site safety protocols
• (e.g., PTW – Permit to Work, LOTO – Lockout/Tagout, H2S awareness, etc.).
• Comply with local and international HVAC codes (ASHRAE, ISO, or equivalent).
• Ensure proper handling, storage, and disposal of hazardous materials (oils, refrigerants, chemicals).
• English speaking is mandatory
• – both written and verbal, for reading technical documents, reporting, and communicating with supervisors and team members.