Answer: Medium overhaul is generally performed every 3000~6000 hours of operation. In addition to completing all the minor repairs, medium overhaul also requires disassembly, repair and replacement of some parts, such as disassembly of oil and gas barrels, replacement of oil filters and oil fine separators, and inspection of rotor wear; disassembly, inspection and adjustment of thermal control valves and pressure maintenance valves to restore the machine to normal operation.
