Answer: (1) Air compressor units must not use obsolete products announced by the state.
(2) The detection instruments are fully equipped. The air supply system is reasonably arranged and must not have obvious damage or leakage. The compressor suction port should be installed in a place that is not sunny and has no heat source.
(3) Air compressor units should have equipment operation records and maintenance records; after overhaul, power consumption energy tests must be carried out in accordance with GB 8222, and test reports must be available.
(4) The air supply system and air-using equipment must operate normally and be used reasonably.
