Chiller Technician

Job Purpose

The Chiller Technician is responsible for the operation, inspection, preventive maintenance, troubleshooting, repair, and servicing of chilled-water systems and associated HVAC equipment. The technician ensures chillers operate safely, efficiently, and reliably while maintaining the required cooling performance and minimizing equipment downtime.

• Operate and monitor various types of chillers, including air-cooled and water-cooled chillers.

• Carry out routine inspection and maintenance of chillers and associated equipment.

• Monitor chilled-water supply and return temperatures, condenser-water temperatures, pressures, flow rates, and operating parameters.

• Inspect compressors, evaporators, condensers, expansion valves, pumps, cooling towers, and associated components.

• Check oil levels, refrigerant conditions, vibration, noise, and abnormal operating conditions.

• Ensure chillers operate within manufacturer-recommended parameters.

• Perform scheduled preventive maintenance in accordance with approved maintenance plans and manufacturer recommendations.

• Clean and inspect condenser and evaporator components.

• Check and clean strainers, filters, heat exchangers, coils, and associated equipment.

• Inspect chilled-water and condenser-water pumps, valves, piping, and insulation.

• Inspect cooling towers, fans, nozzles, fill material, and water circulation systems where applicable.

• Check electrical connections, control panels, sensors, contractors, and protective devices.

• Record operating parameters and identify potential problems before equipment failure occurs.

• Diagnose and rectify chiller breakdowns and abnormal operating conditions.

• Troubleshoot high/low-pressure trips, compressor faults, flow problems, high discharge temperature, oil-pressure issues, sensor faults, and control-system alarms.

• Identify refrigerant leaks and carry out approved leak-testing procedures.

• Perform refrigerant recovery, evacuation, vacuuming, and charging as required.

• Troubleshoot chilled-water circulation and pump-related problems.

• Diagnose electrical and control-system faults using appropriate test instruments.

• ITI / Diploma / Trade Certificate in HVAC, Refrigeration & Air Conditioning, Mechanical Engineering, or related discipline.

• Minimum 5 years of hands‑on chiller maintenance experience.

• Experience with both air‑cooled and water‑cooled chillers is preferred.

• Experience with centrifugal, screw, scroll, or reciprocating chillers is an advantage.

• Experience in commercial buildings, hospitals, hotels, industrial facilities, or large‑scale facilities management is preferred.

• GCC/Qatar experience is an advantage.