Many people who are new to using gasoline generators may not be familiar with the maintenance and troubleshooting procedures, inadvertently reducing the generator's lifespan. So, what should you keep in mind when using a gasoline generator? Below, we have provided a brief overview of gasoline generator maintenance and usage guidelines.

1.For Repairing a Generator Being Sent for Service:

·Disassemble the original generator components for repair or replacement.

·This method has its advantages but requires specialized repair tools, strong independent thinking, judgment, decision-making abilities, a high technical skill level, and a suitable workspace.

2.For On-Site Generator Maintenance:

·On-site generator maintenance should not employ the above method.

·Carefully and meticulously inspect and diagnose faults since there are limitations to dismantling the generator upfront to identify damaged parts and the faulty area.

3.Pre-Dismantling Preparation:

·Before dismantling the generator, avoid rushing and ensure the generator is clean from oil, dirt, and debris.

·Use the correct tools to disassemble the generator, and place all removed components, bolts, etc., in designated locations. Do not scatter them around.

·Thoroughly clean the removed components and inspect for wear during the cleaning process. Perform timely repairs or replacements if any issues are found.

·When troubleshooting the generator circuit, have a basic understanding of the circuit and its workflow. Although generator circuits may seem complex, simplifying them into smaller components according to their operational principles makes troubleshooting less difficult.

·Utilize instruments for circuit testing, analyze the data obtained, and determine the location of the fault.

4.Handling Electrical Circuit Issues:

·Remember the wire colors, connection methods, and specific locations within connectors. Maintain written records if needed.

·Do not unplug plugs or sockets from connectors and alter circuit wiring randomly.

·When troubleshooting circuit faults, be meticulous, patient, and analytical. Employ a multifaceted approach, starting with the easiest issues and progressing to more complex ones, until you identify the fault location.

Following these guidelines and best practices will help you maintain and troubleshoot your gasoline generator effectively, ensuring its longevity and reliable performance.

Changing the oil in gasoline or diesel generators is an important maintenance task that ensures the longevity and proper functioning of the engine. Here are the steps to change the oil in your generator:

Note: The frequency of oil changes can vary depending on the generator model and manufacturer, but a general guideline is to change the oil after the first 10 hours of operation, then every 50 hours thereafter, and finally every 500 hours of use. Additionally, oil changes may be required based on elapsed time and mileage as specified in the generator's maintenance schedule.

1.Prepare the Generator:

●  Place the gasoline or diesel generator on a flat surface.

●  Run the generator until it reaches operating temperature. This helps to thin the oil, making it easier to drain.

2.Locate the Oil Drain Bolt:

●  Find the oil drain bolt or plug on the generator's engine. This is usually located on the bottom of the engine, often near the oil reservoir.

3.Place an Oil Pan:

●  Position an oil pan or container underneath the oil drain bolt to catch the used oil when it drains out.

4.Drain the Oil:

●  Carefully remove the oil drain bolt or plug. Be cautious, as the oil may be hot.

●  Allow the old oil to drain completely into the oil pan. You can tilt the generator slightly to ensure all the oil is drained out.

5.Inspect and Replace Components:

●  Examine the oil drain bolt, its sealing washer or O-ring, and the rubber gasket for any damage or wear. If any of these components are damaged, replace them with new ones.

6.Reinstall the Drain Bolt:

●  Once the old oil has fully drained, reattach the oil drain bolt securely.

7.Add Fresh Oil:

●  Refer to your generator's manual to determine the correct type and amount of oil to use.

●  Pour the new oil into the oil filler opening. It's usually located on top of the engine, and there may be a dipstick or oil level indicator nearby.

●  Fill the oil until it reaches the upper level of the oil level indicator or the recommended level in the manual. Make sure not to overfill.

8.Check Oil Level:

●  After adding new oil, check the oil level using the dipstick or oil level indicator. Adjust if necessary.

9.Dispose of Used Oil:

●  Properly dispose of the used oil in an environmentally responsible way. Many auto parts stores and service centers accept used oil for recycling.

Regularly changing the oil in your gasoline or diesel generator is crucial for maintaining its performance and preventing engine damage. Always refer to your generator's specific manual for detailed instructions and maintenance intervals, as they can vary between models and manufacturers.

1.Reliability: Each generator unit undergoes factory load testing before shipment. During this inspection, a systematic check of the unit, control functions, load conditions, and simulated potential faults is performed.

2.Compact and Lightweight: Solves the equipment requirements and weight limitations in limited spaces on vehicles.

3.Ultra-Quiet and Low Vibration: Ultimate noise reduction with a polyester powder-coated aluminum casing and a damping system.

4.Easy Equipment Protection: Integrated design allows for securing the generator unit to the reserved intake and exhaust positions, connecting the fuel lines, and using the onboard control panel. Protection and maintenance can be completed from a single side.

5.Stable Output: Integrated automatic voltage regulation and speed control functions ensure stable power output from the generator unit.

Troubleshooting Methods for a Gasoline Generator That Won't Start:

1.Monitor Instrument Panel: During generator operation, regularly check the instrument panel for any abnormal indications. If any anomalies occur, make adjustments to ensure the generator maintains its normal working condition.

2.Balance Three-Phase Load: Adjust the three-phase load of the generator to ensure balanced current across all phases.

3.Lubricate Bearings: Follow the specified guidelines for adding oil to the bearings. Avoid overfilling or underfilling; typically, the oil level should be around 70% of the bearing chamber capacity.

4.Check for Bearing Friction: Frequently inspect the bearings for any signs of friction or unusual noises. If issues are detected, promptly shut down the generator for inspection and potential bearing replacement.

5.Inspect Parallel Leads: Check the parallel leads of the stator windings for any breaks or disconnections. If any are found, address them promptly.

6.Examine Stator Core Insulation: Inspect the insulation of the stator core for damage. If any issues are identified, perform necessary repairs to eliminate short-circuit faults between laminations.

7.Cooling System Maintenance: Reduce the intake air and cooling water temperatures, and clear any obstructions in the generator's cooling system to maintain efficient cooling.

8.Clear Air Passages: Ensure that air passages are free from obstructions to maintain proper ventilation.

About Generator Brushes (Carbon Brushes):

1.Brush Structure: Gasoline generators commonly use two types of brushes: natural graphite brushes and electro-graphite brushes.

·Natural Graphite Brushes: These brushes are made from natural graphite powder as the base material, with additives like resin and coal tar (or asphalt). They are manufactured through a process involving mixing, pressing, curing, and machining. The specific resistance of the brushes can vary depending on the proportions of the raw materials used, limiting their application to specific generator models.

·Electro-Graphite Brushes: Electro-graphite brushes are further divided into regular electro-graphite brushes and metal-graphite brushes. Regular electro-graphite brushes are primarily made from a blend of coke, wood charcoal, graphite powder, and additives like coal tar (or asphalt). They undergo two stages of baking, initially at 1300°C to form their shape and then at temperatures above 2500°C to convert the amorphous carbon in the composition into synthetic graphite.

·Metal-Graphite Brushes: Metal-graphite brushes use metal powders such as copper, silver, tin, and lead, combined with graphite powder as their raw materials. They undergo grinding, mixing, pressing, curing (or baking), and machining to form the final product.

2.Brush Functions: Brushes in a generator serve various critical functions, including:

·Input Current: They transfer external current (excitation current) to the rotating rotor.

·Output Current: They convey static electric charges on the main shaft to the ground.

·Commutating: In rectifier generators, they help change the direction of current flow.

Brushes are typically used in conjunction with a brush holder, which secures them in place and allows for easy replacement when needed.

Advantages of Gasoline Generators:

1.Versatile output for wide applications.

2.Stable operation with low noise.

3.Self-adaptive intelligent voltage regulator for steady output.

4.Reliable quality and long service life.

5.Lightweight, flexible, and portable.

6.Multiple starting methods, optional ATS automatic transfer switch technology for a more upscale feel.

When the voltage of a gasoline generator is insufficient to drive a motor, here's what you should do:

There can be various reasons for insufficient generator voltage, and it's essential to identify the root cause to address the issue effectively. Possible reasons include:

1.Insufficient Generator Power:

·Generators have a specified power rating and a maximum load capacity. If the load connected to the generator exceeds its rated capacity, it can result in the prime mover (such as a diesel or gasoline engine) struggling to drive the generator. This may lead to a drop in voltage and a decrease in frequency.

·If the load connected to the generator is within its specified limits, but the frequency remains below the rated value, you should check whether the gasoline or diesel engine has enough power.

2.Low Engine Speed:

·Insufficient generator speed can also lead to low output voltage. If the generator's speed is too low, it may not generate the required voltage. Adjust the generator's speed to reach the rated speed if this is the case.

3.Inadequate Excitation Current:

·Excitation current plays a significant role in determining the generator's output voltage. When there's not enough excitation current, it can result in a voltage drop. There could be various reasons for inadequate excitation current, including issues within the excitation circuit.

·For example, a malfunctioning rectifier diode can lead to reduced excitation current. Poor contact between carbon brushes and slip rings can increase impedance in the excitation circuit, leading to lower excitation current. Excessive resistance in the excitation circuit adjustment can also be a cause.

4.High Motor Starting Current:

·When a generator is connected to a load with a high starting current, such as a motor, and the starting current exceeds the generator's rated output current, it can lead to a voltage drop. To address this, you can use methods like reduced-voltage starting or consider using a generator with a higher capacity.

In summary, when dealing with low generator voltage unable to drive a motor, it's crucial to diagnose the specific cause. You may need to adjust the load, engine speed, excitation current, or consider upgrading to a generator with a higher capacity to ensure proper voltage and power delivery. Regular maintenance and inspection of the generator system are also essential to prevent such issues.