Answer: It alerts the operator with visual and audible warnings, and provides diagnostic information to help identify the problem.
Answer: It uses water as the lubricant, eliminating the need for oil and reducing the risk of contamination.
Answer: Perform a series of tests to check the discharge pressure, capacity, and energy efficiency, and compare the results with the manufacturer’s specifications.
Answer: Check for loose parts, worn components, or improper lubrication, and repair as necessary.
A. Higher B. Lower C. Same as oil injection air compressor D. The answer cannot be determined: B Analysis: Oil-free air compressors do not need to replace lubricants and oil filters, so the maintenance cost is low.
A. Price and brand B. Performance, price and brand C. Input power and output power D. Production date and transportation method Answer: C. input power and output power