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II. Periodic Maintenance (Quarterly/500-2000 Hours)
Filter Replacement
Air Filter: Replace after 500 hours for new machines, then every 1000 hours or quarterly. Reduce to 300 hours in harsh environments .
Oil Filter: Replace after 500 hours for new machines, subsequently every 1000-1500 hours or during oil changes .
Fluid Management
Lubricant Replacement: Annual oil change. Use seasonal grades for crankshaft oil (No. 19 for summer, No. 13 for winter).
Oil Separator: Replace every 2000 hours to ensure effective separation of oil and compressed air .
Critical Component Inspection
Belt Adjustment: Check belt tension and wear; adjust or replace as needed .
Safety Devices: Test pressure relief valves and gauges monthly to verify reliability .
