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Maintenance Mechanic III


Job Location:

Mission, SD - USA

Monthly Salary: Not provided by the employer
Posted: 24 October 2026 (3 days ago)
Application Deadline: 21 January 2027
Vacancies: 1 Vacancy

Job Summary

Overview: 

Repairs and maintains machinery mechanical equipment HVAC/air conditioning systems and industrial ammonia refrigeration systems such as engines motors pneumatic tools conveyor systems refrigeration units ventilation systems evaporative condensers ammonia compressors pumps vessels and production machines and equipment.

Heres what youll do:

  • Ensure operation of machinery and mechanical equipment by completing preventive maintenance requirements on motors conveyor systems mechanical systems hydraulic systems pneumatic systems HVAC systems industrial ammonia refrigeration systems and production machines; following diagrams sketches operations manuals manufacturers instructions engineering specifications and P&ID drawings.
  • Observes mechanical devices HVAC equipment and ammonia refrigeration system components in operation and listens to their sounds to locate causes of trouble.
  • Determines changes in dimensional requirements of parts by inspecting used parts; using rules calipers micrometers gauges and other measuring instruments.
  • Diagnoses and repairs all types of electrical systems including electric motors photo-eyes sensors HVAC controls thermostats VFDs motor starters control circuits and wiring systems up to 480V.
  • Performs troubleshooting repair and preventive maintenance on air conditioning heating ventilation refrigeration and industrial ammonia refrigeration systems.
  • Inspects HVAC systems and ammonia refrigeration components such as compressors condensers evaporators pumps receivers accumulators pressure vessels motors belts filters ducts valves refrigerant lines and safety devices to ensure proper operation and efficiency.
  • Repairs or replaces defective HVAC and ammonia refrigeration components including motors fans relays thermostats contactors solenoid valves regulators pumps compressors sensors pressure switches transmitters and refrigerant system parts.
  • Monitors refrigerant levels system pressures temperatures oil levels vessel levels and equipment performance; checks for leaks and performs repairs in compliance with applicable regulations and safety standards.
  • Operates monitors and assists in the maintenance of industrial ammonia refrigeration systems including screw compressors evaporative condensers evaporators recirculation systems vessels pumps and associated controls.
  • Responds to ammonia refrigeration alarms and abnormal operating conditions identifying root causes and implementing corrective actions to ensure equipment reliability and product protection.
  • Assists with ammonia system startup shutdown pump-out defrost and emergency procedures in accordance with company safety policies and Process Safety Management (PSM) requirements.
  • Dismantles devices to gain access to and remove defective parts.
  • Repairs or replaces defective parts. 
  • Lubricates and cleans parts.
  • Starts devices HVAC equipment and ammonia refrigeration equipment to test their performance.
  • Sets up and operates drill press grinder and other metalworking tools to make and repair parts.
  • Controls downtime by informing production workers of routine preventive maintenance techniques and monitoring compliance.
  • Documents all work completed on work orders per established procedures.
  • Maintains a safe and clean working environment by complying with procedures rules regulations environmental requirements refrigerant handling requirements and Process Safety Management (PSM) regulations related to industrial ammonia refrigeration systems.

Qualifications :

Heres what youll bring to the table:

  • Education and/or Experience Typical Maintenance Mechanic III will have one to three years maintenance experience in a manufacturing/food processing environment.
  • High school diploma or equivalent required.
  • Trade school/occupational training desired but not required.
  • Experience working with industrial ammonia refrigeration systems in a food processing cold storage or manufacturing environment is highly desired.
  • Certificates Licenses Registrations: None required. RETA CIRO CARO IIAR training or equivalent industrial refrigeration certifications are preferred but not required.

Additional Information :

Wonderfuls dedication to you:

Why Choose Wonderful

Wonderful Citrus is part of The Wonderful Company a privately held $6 billion global company dedicated to harvesting health and happiness around the world. Its iconic brands include FIJI Water POM Wonderful Wonderful Pistachios Wonderful Halos Wonderful Seedless Lemons Teleflora and JUSTIN and Lewis Cellars wines. The Wonderful Companys connection to consumers has health at its heart and giving back in its DNA. 

To learn more about The Wonderful Company its products and its core values please visit  or follow The Wonderful Company on LinkedIn Facebook and Instagram. To learn more about the companys corporate social responsibility impact visit . 

Wonderful Citrus and The Wonderful Company is an Equal Opportunity Employer and with opportunities for advancement. All qualified applicants will receive consideration for employment without regard to race color religion sex sexual orientation gender identity national origin disability age protected veteran status or other protected categories.

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Remote Work :

No


Employment Type :

Full-time


About Company

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Headquartered in Los Angeles, The Wonderful Company is a privately held $6 billion company dedicated to harvesting health around the world through its iconic consumer brands. The company’s 10,000 employees worldwide are committed to bringing consumers everywhere the freshest, most who ... View more

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