Position Overview. The primary purpose of this position is to: Oversee and manage the safe operation, daily monitoring and maintenance of large scale industrial anhydrous ammonia and/or R-22 refrigeration systems. Oversee the safe ope ration, daily monitoring and maintenance of industrial and office HVAC systems. Provide assistance to Manager of Facilities Maintenance to ensure assets (Refrigeration/HVAC/Electrical systems) are managed in accorda...