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, manufacturer's instructions, engineering specifications, and P&ID drawings. 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.