Lead Technician - Industrial Refrigeration

Johnson Controls, Inc.; Dubai Emirate; On-site; AED 90,000 - 120,000; Full time

Job summary

Johnson Controls in Dubai seeks an experienced Refrigeration Service Personnel to join the Industrial Refrigeration team. You will commission, service, troubleshoot, and maintain refrigeration systems across industries, reporting to the Field Line Manager.

You will read electrical drawings and P&ID diagrams, work with Sabroe, Gram, Frick compressors, and Danfoss valves. Experience with PLCs, DCS, and related controllers is essential. Strong communication with clients is required.

Qualifications

• Diploma or degree in Refrigeration and Air Conditioning.
• 6–8 years of hands-on field service experience.
• Strong understanding of electrical and controller drawings, and P&ID diagrams.
• Familiarity with Sabroe, Gram, and Frick compressor units.
• Proficiency with testing, commissioning, and servicing Danfoss valves and control systems.
• Experience in overhauling reciprocating screw compressors (Sabroe, Gram, Frick, YORK).
• Solid understanding of controls and instrumentation (relay-based, PLCs, DCS) and compressor controllers (Unisab, Gramatic, Quantum).
• Knowledge of process cooling equipment and refrigerants in petrochemical industries.
• Awareness of hazards with ammonia, propane, and H2S gases.
• Excellent communication and problem-solving skills.

Responsibilities

• Commission, service, and troubleshoot refrigeration systems and gas compressor units.
• Read and understand electrical and controller drawings and P&ID diagrams.
• Perform testing, commissioning, and service on Danfoss valves and control systems.
• Overhaul reciprocating screw compressors (Sabroe, Gram, Frick, YORK).
• Handle communication with customers and report on field activities.

Skills

Refrigeration systems

Electrical drawings

P&ID diagrams

Sabroe/Gram/Frick

Danfoss valves

Screw compressors

Controls & instrumentation

Hazards awareness

Education

Refrigeration & Air Conditioning diploma/degree

Tools

Danfoss control systems

Unisab/Gramatic/Quantum controllers

Job description

What you will do

We are seeking an experienced and knowledgeable Refrigeration Service Personnel to join our Industrial Refrigeration team in the United Arab Emirates. In this role you will be reporting to the Field Line Manager and will be responsible for commissioning, servicing, troubleshooting, and maintaining refrigeration systems in various industries.

How you will do

• Conduct service and maintenance activities on IR Ammonia single and double stage systems, adhering to operational philosophies.
• Read and understand electrical and controller drawings, as well as P&ID diagrams.
• 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.

What we look for

• Proven experience and knowledge in the commissioning, servicing, and troubleshooting of refrigeration systems.
• Hold a diploma or degree in Refrigeration and Air Conditioning.
• Have a minimum of 6 to 8 years of hands-on field service experience.
• Strong understanding of electrical and controller drawings, as well as P&ID diagrams.
• Familiarity with Sabroe, Gram, and Frick compressor units.
• Proficiency in testing, commissioning, and servicing Danfoss valves and control systems.
• Experience in overhauling reciprocating screw compressors, preferably SABROE, GRAM, Frick, and YORK compressors.
• Solid understanding of controls and instrumentation, including relay‑based controls, PLCs, DCS systems, and compressor unit controllers (Unisab, Gramatic, Quantum).
• Knowledge of process cooling equipment and refrigerants used in petrochemical industries.
• Basic awareness of the hazards associated with ammonia, propane, and H2S gases.
• Excellent communication and problem‑solving skills.

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