Ammonia Refrigeration Technician

MAC Incorporated; Dallas (TX); On-site; USD 43,000 - 51,000; Full time

Benefits offered by this job

Health benefits after 30 days (80% of

1 week PTO accrual

Job summary

MAC Incorporated in Dallas, TX is seeking a skilled Ammonia Refrigeration Technician for 2nd shift in a large manufacturing plant.

You will operate and maintain ammonia refrigeration systems, boilers, and HVAC; perform preventive maintenance and repairs; keep logs; ensure safety and GMP/USDA compliance.

Must have 5–10 years of hands-on ammonia-based refrigeration experience; certificates such as CARO, RETA, Ammonia Operator 1 are preferred; willing to work Mon-Sat and be on-call.

Qualifications

• 5–10 years of hands-on ammonia-based refrigeration experience.
• Strong HVAC repair and maintenance skills.
• Bilingual in English/Spanish strongly preferred.
• Willingness to work on an on-call basis.
• Commitment to GMPs and USDA regulations.

Responsibilities

• Operate and maintain ammonia refrigeration systems and related equipment.
• Perform preventive maintenance, troubleshooting, and repairs.
• Keep accurate logs of operating conditions and performance.
• Collaborate with team members to identify and resolve issues.
• Ensure compliance with safety rules, GMPs, and USDA standards.
• Maintain plumbing, electrical, and HVAC systems and repairs.
• Inspect and test machinery with operators to determine root causes.
• Work with PLC controls, VFD drives, and instrumentation.

Skills

Ammonia refrigeration

HVAC repair

On-site maintenance

Team collaboration

Reading schematics

Education

CARO certification

RETA certification

Ammonia Operator 1

Job description

Ammonia Refrigeration Technician Dallas, Texas
Job Ref: 41532

LARGE MANUFACTURING PLANT IN DALLAS TX IS LOOKING FOR A STRONG AMMONIA REFRIGERATION TECHNICIAN ON 2ND SHIFT. LOOKING FOR SOMEONE WITH CERTIFICATES AS WELL CARO, RETA, AMMONIA OPERATOR 1, ETC. THEY NEED TO GET THIS ROLE FILLED FAST.

MUST BE OPEN TO OT USUALLY MON-SAT

SHIFTS:
2ND SHIFT- M-F PLUS SATURDAYS 1PM-9:30PM

PAYS: $31.50-$36.50 HOURLY (DOE)

BENEFITS KICK IN AFTER 30 DAYS THEY PAY 80% PREMIUM OF EMPLOYEE AND DEPENDENTS

1 WEEK OF PTO YOU ACCRUE

Essential Functions:

• Operate and maintain boilers, air compressors, and ammonia-based refrigeration systems in a frozen food manufacturing plant.
• Perform preventative maintenance, troubleshooting, mechanical and electrical repairs to ensure packaging, processing, and facility equipment operate at peak performance.
• Maintain accurate logs and documentation of operating conditions, system performance, and any issues encountered.
• Collaborate with team members and other departments to identify, communicate, and resolve problems.
• Ensure compliance with all company safety rules, GMPs, and USDA regulations.
• Safely and effectively maintain plumbing, electrical, and HVAC systems through proper diagnosis, repair, and routine servicing.
• Assist with maintenance of production and processing machinery, mechanical equipment, and facility infrastructure.
• Repair and maintain pumps, conveyor systems, motors, and other equipment, following schematics, blueprints, manuals, or manufacturer specifications.
• Inspect, test, and evaluate machinery with operators to determine root causes of malfunctions.
• Conduct daily chemical testing, record results, and make system adjustments to maintain refrigeration and utility systems within established limits.
• Ensure safe, efficient operation of refrigeration, steam generation, and utility systems.
• Perform welding repairs on metal components and assist with equipment assembly.
• Work with PLC controls, VFD drives, and demonstrate proficiency in instrumentation.

Job Requirements & Skills:

• Strong background in ammonia refrigeration, preferably in food manufacturing environments.
• 5–10 years of hands‑on ammonia‑based refrigeration experience preferred.
• Skilled in HVAC repair and maintenance.
• Ability to work independently or as part of a team, adhering to Process Safety Management (PSM), company policies, and regulatory requirements.
• Availability for 24/7 on‑call support.
• Maintain documentation for preventive maintenance, in‑house audits, and annual inspections.
• Language Skills: Ability to read, analyze, and interpret technical documents, manuals, and journals. Bilingual in English/Spanish strongly preferred.
• Mathematical Skills: Solid math ability; capable of working with formulas and measurements.
• Reasoning Ability: Strong problem‑solving skills with the ability to read schematics, interpret mechanical drawings, collect data, and draw valid conclusions.

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