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AJ Personnel

Senior Refrigeration & Commissioning Technician

AJ Personnel

  • R Undisclosed
  • Permanent Intermediate position
  • Primrose
  • Posted 16 Jul 2026 by AJ Personnel
  • Expires in 28 days
  • Job 2642569 - Ref JHB003963

About the position

Background:

  • A leading manufacturing company is looking for a Refrigeration & Commissioning Technician to join their expanding team

Minimum Requirements:

  • Grade 12 (Matric)
  • Qualified Refrigeration Mechanic (Red Seal Trade Test)
  • Valid SAQCC Gas Registration
  • Valid code B driver's license
  • Minimum 5–10 years' experience in commercial and industrial refrigeration
  • Proven experience in commissioning commercial refrigeration systems
  • Practical experience with CO2 (R744) refrigeration systems will be advantageous
  • Strong electrical and mechanical fault-finding skills
  • Experience commissioning refrigeration controllers and Variable Speed Drives (VSDs)
  • Ability to read refrigeration piping diagrams, P&IDs and electrical drawings
  • Intermediate computer literacy (Microsoft Office)

Responsibilities:

Refrigeration Installation, Service & Commissioning


  • Assist Contractors with commission and service commercial and industrial refrigeration systems
  • Commission CO2 (R744) trans-critical refrigeration systems
  • Commission refrigeration racks, cold rooms, freezer rooms, blast freezers, chillers and process cooling systems
  • Carry out preventative maintenance in accordance with service schedules
  • Attend emergency breakdowns and reactive service calls
  • Diagnose and repair refrigeration, mechanical and electrical faults
  • Replace compressors, evaporators, condensers, pressure vessels, valves, electronic expansion valves (EEVs), pressure transmitters, sensors, driers and associated refrigeration components
  • Perform nitrogen pressure testing, leak detection, evacuation, refrigerant charging and refrigerant recovery

Commercial, Simplex and CO2 (R744) Refrigeration Systems

  • Commission, service, maintain and repair commercial, simplex and CO2 (R744) trans-critical refrigeration systems
  • Diagnose mechanical, electrical and control system faults on commercial, simplex and CO2 (R744) refrigeration systems
  • Perform advanced fault finding and root cause analysis on refrigeration systems and associated equipment
  • Configure refrigeration control systems, operating parameters and system control strategies

Electrical & Controls

  • Diagnose and repair refrigeration electrical faults
  • Read and interpret electrical schematics, refrigeration wiring diagrams and P&IDs
  • Test electrical circuits, motors, contactors, overloads, relays and safety devices
  • Install, commission and troubleshoot refrigeration electrical control systems
  • Configure and commission electronic controllers including Carel, Danfoss, Dixell, Eliwell, and similar platforms
  • Set up, program, commission and troubleshoot Variable Speed Drives (VSDs) for compressors, condenser fans, evaporator fans and pumps

Manufacturing Support & Warranty Responsibilities

  • Attend customer sites to investigate and rectify manufacturing defects reported on equipment
  • Respond to warranty-related job cards and service requests
  • Perform fault finding on manufactured refrigeration systems, electrical control panels and mechanical assemblies

Engineering and Quality Departments

  • Recommend design improvements to improve equipment reliability and serviceability
  • Assist the factory with field modifications, equipment upgrades and commissioning improvements

Quality Assurance

  • Ensure compliance with the ISO 9001 Quality Management System
  • Conduct quality inspections during installation, commissioning and maintenance activities
  • Verify refrigeration piping, brazing, insulation, electrical wiring and equipment installations

Technical Leadership

  • Provide technical leadership and support to refrigeration technicians
  • Mentor apprentices and junior technicians
  • Conduct technical training and toolbox talks

Customer Support

  • Liaise professionally with customers, consultants and subcontractors
  • Explain technical findings and repair recommendations
  • Provide customer training following commissioning and major repairs

Administration

  • Complete job cards accurately and within company time frames
  • Complete commissioning reports, service reports, warranty investigation reports, quality inspection reports

Remote Monitoring

  • Monitor refrigeration systems using various remote monitoring platforms
  • Analyze alarms and refrigeration system performance
  • Provide remote technical support and fault diagnosis

Health, Safety & Compliance

  • Comply with the Occupational Health and Safety Act (OHSA)
  • Comply with the Pressure Equipment Regulations (PER)
  • Maintain a valid SAQCC Gas Registration

TO APPLY:

  • Only if you meet the minimum job requirements and experience as mentioned above, you may submit a detailed updated CV.
  • Please Apply Online and complete your registration via our website to enable and protect you as a candidate and to accept the new POPIA terms and conditions.
  • This will then create your permanent profile with which you can apply for all jobs as advertised by AJ PERSONNEL.
  • However, you may remove your profile from AJ PERSONNEL when you are no longer in the job market.
  • Please take note that the applicants who do not adhere to the minimum requirements will not be considered for the respective position.
  • Note our clients may expire jobs at their own discretion.
  • AJ PERSONNEL will only respond to shortlisted candidates.
  • If you have not received a response within two (2) weeks from applying, your application was then unsuccessful for that specific position, however your profile remains on our system for future opportunities.

Desired Skills:

  • HVAC Technician
  • Refrigeration Technician
  • SAQCC Gas Registration
  • Red Seal Trade Test
  • Industrial Refrigeration

Employer & Job Benefits:

  • Medical Aid and Provident Fund

AJ Personnel

About the agency

AJ Personnel is a Recruitment Agency established in 1987. It is our purpose to select most suitable candidates for positions, where they would thrive and contribute effectively to the enhancement of the company. We recruit across the board for a variety of industries and categories. Recruitment services include placement of permanent, contract and temporary staff as well as response handling. Based in the Randburg area we do Recruitment countrywide as well as Namibia, Botswana, Europe the UK and Australia.

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