1. Core Significance of Generator Set Maintenance
As essential emergency and main power supply equipment for industrial production, commercial buildings, medical communication and field engineering, generator sets directly determine operational stability, production progress and asset safety. Long-term high-load operation, dust accumulation, oil aging and component wear easily cause failures such as startup failure, insufficient power, oil/water leakage and abnormal noise. Standardized and periodic maintenance effectively reduces failure rates and maintenance costs, improves power generation efficiency, cuts fuel consumption, greatly extends the overall service life, and ensures 24-hour stable standby and zero-error emergency startup.
2. Daily Basic Maintenance (Before & After Each Operation)
Daily inspection is the first line of defense against sudden failures, suitable for all silent, open-frame and container-type diesel and gas generator sets.
Before startup, check the overall appearance for oil, water and air leakage, and confirm all pipelines and fasteners are intact and tight. Verify fuel, lubricating oil and coolant levels are within standard ranges to avoid liquid shortage operation. Clean dust and sundries on the unit surface, cooling fins and air inlets to ensure smooth ventilation and heat dissipation and prevent overheating. Run the unit with no load for 3-5 minutes, observe dashboard data including voltage, frequency, oil pressure and water temperature, and check for abnormal noise, vibration and smoke emission.
After shutdown, turn off oil and circuit switches in time, clean the unit surface, record operation duration and status, and eliminate minor hidden dangers to avoid accumulated failures.
3. Regular Periodic Maintenance (Weekly & Monthly)
Weekly maintenance focuses on operating condition optimization. Check the cleanliness of the air filter and clean it in dusty environments to prevent insufficient air intake, incomplete combustion and power attenuation. Inspect the battery, clean terminal oxidation and corrosion, fasten connections and test voltage to ensure normal electric startup in low temperature and power failure conditions. Check drive belts for cracks, aging and slippage, and adjust tension or replace belts as needed.
Monthly maintenance includes load test operation. Run the generator with rated load for 20 to 30 minutes to burn off water and carbon deposits in the oil circuit and avoid pipeline blockage and component stagnation caused by long-term idleness. Fully inspect cooling system pipelines and seals for leakage risks, calibrate instrument parameters to ensure accurate voltage and frequency output and stable power supply quality.
4. In-depth Maintenance (100/300/500 Working Hours)
In-depth maintenance based on operating hours is the key to extending equipment service life and must comply with official standards.
Every 100 hours: Replace special engine lubricating oil and oil filter. Aged oil with decreased viscosity and increased impurities will aggravate cylinder wear. Clean or replace the air filter and check oil pipeline seals for micro-leakage risks.
Every 300 hours: Replace fuel filters and water-oil separator filters to completely remove water and impurities in the oil circuit, preventing nozzle blockage and poor combustion. Inspect the tightness of turbo and intake/exhaust pipelines, clean exhaust carbon deposits, and fasten mechanical connections to eliminate abnormal noise.
Every 500 hours: Deeply maintain the cooling system, clean scale and oil stains on water tanks and cooling fins to restore heat dissipation efficiency. Adjust valve clearance and fuel injection pressure to calibrate engine operating conditions. Fully test the insulation performance of the generator set and check line aging to ensure power safety.