iREF Commissioning & Service Field Engineer

Johnson Controls; Dubai; On-site; AED 201,000 - 290,000; Full time

Job summary

Johnson Controls seeks an experienced Industrial Refrigeration Service & Commissioning Specialist to support iREF Middle East and Africa projects. You will assist with testing, commissioning activities, and service across ammonia systems and Sabroe/Gram/Frick equipment.

You will review drawings, conduct site surveys, lead testing strategies, and ensure safety and regulatory compliance while coordinating with customers and consultants.

Qualifications

• Diploma or degree in Refrigeration and Air Conditioning.
• 6–8 years hands-on field service experience.
• UAE driving license is mandatory.

Responsibilities

• Review design and installation documents (PID, SLD, MCC drawings).
• Conduct service and maintenance on ammonia refrigeration systems.
• Commission service and troubleshoot refrigeration systems and gas compressors.
• Overhaul reciprocating and screw compressors (Sabroe, Gram, Frick, York).
• Work with controls/instrumentation (PLCs, DCS, relays, Unisab Gramatic/Quantum).
• Create commissioning files, reports and drawings; ensure safety compliance.

Skills

Refrigeration systems

Testing & commissioning

Troubleshooting

Controls & instrumentation

Communication

Education

Diploma/degree in Refrigeration and Air Conditioning

Tools

Sabroe

GRAM

Danfoss

Unisab/Gramatic/Quantum controllers

Job description

What you will do

The Industrial Refrigeration Service & Commissioning Specialist supports the iREF Middle East and Africa projects team by assisting with testing and commesioning acitivities and service

• Including but are not limited to: reviewing PID SLD and MCC Drawings and documentation provided by supplier or internal design team conducting site survey participating in technical meeting with customer or consultant and explain testing strategy

• Conduct service and maintenance activities on IR Ammonia single and double stage systems adhering to operational philosophies.
• Commission service and troubleshoot refrigeration systems and gas compressor units with a preference for experience with Sabroe Gram and Frick units.
• Perform testing commissioning and service on Danfoss valves and control systems commonly used in JCI industrial refrigeration systems.
• Overhaul reciprocating screw compressors preferably with experience on SABROE GRAM Frick and YORK compressors.
• Possess refrigeration knowledge and experience in controls and instrumentation including an understanding of relay-based controls PLCs DCS systems and compressor unit controllers such as Unisab Gramatic and Quantum.
• Familiarity with process cooling equipment commonly used in petrochemical industries including systems utilizing propane Propylene and R134a refrigerants.
• Maintain a basic understanding of the hazards associated with ammonia propane and H2S gases.
• Handle report and communicate effectively with food and beverage and PRS customers.

• Installation Oversight: Supervise and coordinate the installation process of refrigeration equipment to ensure it aligns with design specifications and quality standards.
• Pre-Commissioning Checks: Conduct thorough inspections of the installed systems to confirm that all components (compressors condensers evaporators etc.) are properly installed and free from defects.
• System Testing: Perform performance testing of refrigeration systems including checking for leaks verifying capacity and ensuring operational parameters are met under various conditions.
  Calibration: Adjust and calibrate control systems sensors and instrumentation to ensure accurate monitoring and effective system control.
• Operational Training: Provide training to operational personnel on the safe and efficient operation of the refrigeration systems ensuring they understand maintenance procedures and emergency protocols.
  Documentation: Prepare and maintain comprehensive documentation including test results commissioning reports and as-built drawings to facilitate future maintenance and troubleshooting.
  Troubleshooting: Identify and resolve any issues or inefficiencies during the commissioning phase working closely with other engineers and technicians to implement solutions.
• Safety Compliance: Ensure that all systems are compliant with safety regulations and industry standards such as ASHRAE and EPA guidelines pertaining to refrigerants and safety protocols.
• Performance Optimization: Analyze system performance data post-commissioning and recommend improvements or adjustments to enhance energy efficiency and operational reliability.

How you will do it

The industrial refrigeration commissioning & service specialist can effectively execute his/her responsibilities by:

• Documentation Analysis: Review design documents such as specifications schematics and layouts meticulously to confirm that necessary factors such as thermal load calculations and refrigeration cycle designs are incorporated.
• Coordination Meetings: Organize and participate in design review meetings with stakeholders to address potential issues and clarify design intentions ensuring all parties are on the same page.
• Integration Checks: Ensure that the refrigeration system integrates well with other systems (HVAC electrical plumbing) within the facility verifying flow paths and controls.
• On-Site Supervision: Actively supervise the installation team providing guidance on best practices and ensuring that the installation capabilities meet specified protocols.
• Acceptance Testing: Inspect and sign off on the completion of each installation phase ensuring standards are met before moving on to subsequent steps.
• Coordination with Other Trades: Work closely with electrical mechanical and plumbing teams to ensure timely and efficient collaboration without hindering progress.
• Initial System Inspections: Conduct a full walk-through of the installed equipment checking alignment installation quality and compliance to design.
• Checklists and Protocols: Develop specific checklists tailored to the project to ensure no critical components or steps are overlooked.
• Documentation of Findings: Record any issues discrepancies or non-compliance findings ensuring these are communicated and rectified before proceeding.
• Dry Runs and Pressure Tests: Conduct dry runs of the system testing for integrity under varying pressures to ensure no leaks exist before charging the system with refrigerants.
• Load Testing: Simulate typical operational loads to assess the systems performance and check that it meets the required capacity.
• Emergency Procedures Testing: Test emergency shutdown procedures and safety locks to ensure compliance and operational preparedness.
• Precision Instruments Setup: Utilize advanced precision measuring tools such as thermocouples pressure gauges and flow meters to gather baseline operational data.
• Control Calibration Processes: Implement structured processes for temperature and pressure set-point calibrations to ensure controls work accurately throughout system operation.
• Performance Monitoring: Continuously monitor system performance post-calibration to identify any fluctuations or anomalies.
• Customized Training Modules: Develop and implement training programs tailored to the specific refrigeration system and its components to enhance operator understanding.
• Safety Drills: Conduct regular drills to practice emergency response scenarios ensuring that all personnel are prepared for potential issues.
• User Manuals and Resources: Create easily accessible user manuals troubleshooting guides and service schedules that operators can reference for day-to-day operations.
• Comprehensive Commissioning Files: Create a commissioning file that contains all relevant documentation including installation photos specifications calibration records and performance test results.
• Updates to Technical Documentation: Ensure all changes throughout the commissioning process are reflected in updated technical documents and drawings.
• Format Standardization: Follow company standards for naming conventions formats and documentation processes to ensure consistency and ease of understanding.
• Structured Problem Solving: Employ systematic troubleshooting methodologies such as the 5 Whys or fishbone diagrams to identify and resolve root causes of detected issues.
• Data Recording and Trend Analysis: Maintain logs of system performance and historical data to analyze trends over time aiding in predictive maintenance initiatives and future troubleshooting efforts.
• Cross-Disciplinary Collaboration: Work collaboratively with design engineers and technicians to address complex issues requiring interdisciplinary expertise.
• Regulatory Alignment: Keep informed about current refrigeration regulations (e.g. EPA OSHA local codes) and ensure all activities comply with the latest standards.
• Safety Guidelines Development: Create safety guidelines specific to the refrigeration systems in place emphasizing proper refrigerant handling and PPE (Personal Protective Equipment) usage.
• Accident Reporting Protocols: Establish protocols for reporting accidents or near misses fostering a culture of safety and continuous improvement within the team.
• Energy Efficiency Audits: Evaluate energy consumption data to identify opportunities for improvements in system efficiency or retrofitting options.
• Post-Commissioning Review: Conduct a post-commissioning review meeting with stakeholders to discuss performance outcomes discrepancies from expected results and areas for potential optimization.
• Feedback Integration: Develop a system for collecting ongoing feedback from operators regarding system performance and incorporate that feedback into future commissioning and design processes.

What we look for

• Hold a diploma or degree in Refrigeration and Air Conditioning.
• Have a minimum of 6 to 8 years of hands-on field service experience.
• Excellent communication and problem-solving skills.
• UAE driving license is mandatory.