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Daily Maintenance of Large Diesel Generators

Time：2026-01-16 15:14:44 Edit：HuaQuan Traffic Index：260

A large diesel generator is a device that generates electrical energy through an internal combustion engine driving a generator set. It is usually used as a backup power source, mobile power supply, or off-grid main power source, playing a key role in industrial and commercial sectors, infrastructure, and critical occasions.

I. Features of Large Diesel Generators
Large diesel generators have high power, strong reliability, quick startup, and easy fuel storage, making them the preferred backup power source for critical places such as data centers and hospitals.

II. Huaquan Power is a professional large diesel generators manufacturer in China.
Huaquan Power Company was established in 2010. Its business spans multiple sectors, including power generation equipment, new energy storage equipment, high and low voltage complete sets of equipment, and power engineering. The company has created three major brands: "HQ-POWER," "HUAQUAN," and "Huaquan." Currently, the company has developed into a strong global brand in the power industry, with cumulative global sales exceeding 1 million units.

III. Advantages of Large Diesel Generators
1. High Reliability: Large diesel generators are technologically mature, have a low failure rate, and can start quickly during emergency power outages, ensuring continuous power supply for critical facilities.
2. Strong Power: Large diesel generators cover a wide range of single-unit power and can handle heavy or sudden loads.
3. Fuel Safety: Diesel has a high flash point and is not easily volatile, making it suitable for long-term safe storage and emergency backup.
4. Strong Adaptability: Large diesel generators have low dependence on the environment and the power grid, making them suitable for remote areas, harsh conditions, and mobile power supply scenarios.
5. Longevity and Maintenance: They have a sturdy structure, are easy to maintain, have a long lifespan, and overall costs are manageable.

IV. Daily Maintenance of Large Diesel Generators
1. Daily/Pre-Operation Checks of Large Diesel Generators
- Oil, Water, and Fuel Checks: Check engine oil and coolant levels, fuel quantity, and fuel-water separation.
- Electrical Checks: Check battery voltage, ensure wiring terminals are secure and clean.
- Visual Inspection: Check for leaks, unusual noises, or damage on the generator, and keep the equipment clean.
2. Regular Maintenance of Large Diesel Generators (Weekly/Monthly)
- No-Load Testing: Run the generator under no-load for 10-15 minutes weekly and record voltage, frequency, oil pressure, and water temperature.
- Filter Maintenance: Clean or replace air, fuel, and oil filters of the generator according to environment and operating hours.
- Belts and Connections: Check the tension of fan belts and tighten bolts on all components.
3. Long-Term Maintenance of Large Diesel Generators (Quarterly/Yearly)
- Oil and Fluid Replacement: Replace engine oil and coolant according to the manual schedule.
- Load Testing: Run the generator at full load (≥80%) at least once a year for 1 hour to verify load capacity and remove carbon deposits.
- Electrical System Calibration: Test ATS automatic transfer, and calibrate voltage and frequency.
4. Key Points for Large Diesel Generators
- Fuel Management: Use diesel of the specified grade, regularly drain water, and add stabilizers for long-term storage.
- Battery Maintenance: Regularly charge the large diesel generators battery to prevent discharge.
- Environment Maintenance: Ensure proper ventilation and cleanliness in the generator room to prevent overheating and dust accumulation.
- Complete Records: Document all inspections, tests, and maintenance for tracking purposes.

V. Q&A on Large Diesel Generators
1. Key requirements for the design of a large diesel generator room?
Sufficient air intake and exhaust area (to ensure heat dissipation), foundation load-bearing capacity, exhaust back pressure limit (usually <6 kPa), noise reduction measures (soundproof enclosure or soundproof wall).
2. What is parallel operation of large diesel generators?
Multiple generators supply power together after synchronization through a paralleling cabinet, achieving capacity expansion, redundancy backup, or load distribution. It is technically complex and requires professional commissioning.
3. Why do large diesel generators need an ATS cabinet?
To achieve fully automatic switching between mains power and generator supply, ensuring uninterrupted power to critical loads, with a typical switching time of ≤10 seconds.

VI. Application Areas of Large Diesel Generators
1. Large Diesel Generators as Emergency Backup Power
They can start automatically within seconds during a power outage, ensuring uninterrupted operation of critical facilities.
Lifeline and Data Centers: Hospitals, data centers, communication hubs.
Critical Public Facilities: Airports, financial trading centers, command centers, high-rise building fire protection systems.
2. Main Power / Continuous Power Supply
In areas without grid access or with unreliable grids, large diesel generators serve as the primary power source.
Remote Areas: Mines, oil and gas fields, islands, field construction sites.
Off-grid Operations: Remote factories, farms, resorts.
3. Large Diesel Generators as Mobile and Flexible Power Sources
Providing flexible and rapid power solutions.
Emergency and Rescue: Mobile power trucks for disaster relief, large events, and film production.
Marine Power: Marine generator sets for various types of ships (main or auxiliary power).
4. Power System Support
Large diesel generators participate in grid regulation and support.
Peak Shaving and Backup: Provide support during peak electricity demand or within local grids.
Black Start Power: Help restore power to collapsed grids.

Large diesel generators are essential power equipment, and regular maintenance is key to ensuring their reliability and long service life. We hope the above introduction provides useful reference for users.
More information about large diesel generator: http://www.fadianjidl.com/