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II. Common Fault Diagnosis & Repair Solutions
1. Lubrication System Failures
Excessive Oil Consumption:
Causes: Seal aging, piston ring wear (>0.1mm clearance), or oil return line blockage34
Solutions: Replace hydrogen-embrittlement-resistant seals (>200k cycles), flush return lines with SAE 30 oil34
Oil Contamination:
Immediate replacement of ASTM D6082-compliant lubricant with viscosity monitoring (40-60 cSt @40°C)34
2. Pressure Anomalies
Insufficient Pressure:
Causes: Clogged air filters (ΔP >0.5 bar), worn piston rings, or pipeline leaks35
Solutions: Clean/replace filters (optimize PUE <1.1), install ceramic-coated piston rings35
Overpressure:
Recalibrate pressure sensors (±0.5% accuracy), clean unloader valve cores with non-abrasive solvents35
3. Startup Failures
Failure to Start:
Test power fuses (<5Ω resistance), control relays (200ms response), and motor bearings (Grease NLGI #2)68
For locked rotors: Disassemble pulleys and replace high-temperature bearings (150°C rated)68
4. Exhaust System Defects
High Exhaust Temperature:
Clean cooling tower fins and replenish phase-change coolant (±2°C control accuracy)45
Low Exhaust Pressure:
Inspect 2SV solenoid valves for leakage (≤0.01 L/min) and repair check valve sealing surfaces58
