Ammonia Maintenance Technician

Job Locations US-IL-Chicago
Full Time

Company Overview

Hostess Brands, LLC, is a large packaged food company focused on developing, manufacturing, marketing, selling and distributing fresh baked sweet goods in the United States such as Ding Dongs®, Ho Hos®, Donettes® and Fruit Pies, in addition to Twinkies®, CupCakes, Voortman’s Cookies and Wafers.

Job Overview

Night Shift Available:10pm-6:30am


The employee is responsible for all activities involving maintenance and operation of the plant utilities inclusive of the following: ammonia refrigeration system, freon packaged units and HVAC, high and low pressure steam boiler systems, thermal oil process boiler systems, hot water generator, thermal oxidizer, compressed air systems, electrical distribution, building sprinkler systems and all supporting equipment.


  • Maintains the following equipment: Ammonia refrigeration system, Freon packaged refrigeration units and building heating and air conditioning equipment, high and low pressure steam boiler systems, thermal oil process boiler systems, hot water generator, thermal oxidizer, compressed air systems, electrical distribution equipment, building sprinkler systems, and any other supporting equipment as directed by management.
  • Performs duties as assigned by the Utilities Supervisor, Systems Area Lead and/or Maintenance Supervisor
  • Ensures continuous operation of all the facility utility systems and peripheral equipment to support the requirements of the production schedule and facility conditions. This requires proper coordination of all operations and maintenance utilities equipment.
  • Coordinates both internal and external resources for maintenance of the facility.
  • Assists in the development of all environmental programs required from local, state, and federal agencies.
  • Assists in the recordkeeping and training requirements for all components of the Process Safety Management/Risk (PSM/RMP management plans to achieve compliance with state and federal guidelines.
  • Provides technical analysis and services to provide real-time data on the status of refrigeration and operational equipment.
  • Takes a leadership role on the emergency response team in the event of release of hazardous chemicals.
  • Maintains boiler cooling tower chemistry to insure safe and proper boiler operation. Works with the water treatment supplier to assure the equipment is operating correctly.
  • Assures the ammonia compressors are operating safely and efficiently to reduce energy consumption.
  • Performs preventative maintenance on equipment to maintain in good working condition.
  • Troubleshoots electrical, mechanical, hydraulics, pneumatics, and plumbing.
  • Utilizes drawings, technical records, and vendor diagrams to complete Preventative Maintenance documents (PM’s) related to machine overhauls and repairs.
  • Handles maintenance emergencies as required.
  • Completes duties in accordance with quality assurance, Good Manufacturing Practices, safety and other company programs and procedures, and in accordance with government codes and regulations.
  • Maintains clean, organized, and safe work area, including wiping and washing equipment and tools; sweeping and mopping floors; trash removal.
  • Works to maintain and improve on the quality, legality and safety of each product and the processes used in their manufacture. Responsible for keeping assigned work area clean and tidy at all times and reporting any potential contamination and suspicious activity to a Supervisor immediately.
  • Other duties as defined.



  • High school diploma or GED preferred
  • Ammonia refrigeration certification.
  • Certificate in HVAC
  • PSM training preferred.
  • Knowledge of equipment set-up, functions, operating procedures, and preventative maintenance techniques.
  • Basic knowledge in programmable logic controllers (PLCs) preferred.
  • 3 years of experience working with Ammonia refrigeration
  • Experience working in a maintenance department, preferably in an automated food processing plant.



Working Conditions:

  • Manufacturing Environment


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