Answer: Perform a series of tests to check the discharge pressure, capacity, and energy efficiency, and compare the results with the manufacturer’s specifications.
A. Low level of protection B. High level of protection C. Low power D. High noise answer: B. high protection level
Answer: Regular inspections of the air filter, lubrication system, and motor can help prevent premature wear and tear.
A. 50% B. 60% C. 75% D. 80% answer: C analysis: Environmentally friendly oil-free air compressors reduce oil pollution, thereby reducing the frequency of filter replacement and optimizing maintenance costs.
Answer: The advantages include no oil contamination, low maintenance costs, long service life, and high energy efficiency.
A. Cylinder head and air liner B. Piston and piston rod C. Valve assemblies and lubrication systems D. These are all answers: D. all of the above are