how to check and add coolant to a generator?

We will provide you with a step-by-step guide on how to check and add generator coolant to ensure that your generator stays in tip-top shape.

November 13, 2023
BY BISON

The lifeblood of any generator, coolant is more than just an accessory – it’s a necessity. This vital component plays a pivotal role in maintaining the generator’s temperature, ensuring it performs optimally even under extreme conditions. Without it, your generator risks overheating, which can result in costly damage and inconvenient downtime.

Today, China BISON will demystify the process of checking and adding generator coolant and guide you through simple but important maintenance routines. We will provide you with a step-by-step guide on how to check and add generator coolant to ensure that your generator stays in tip-top shape. So, if you’re ready to become a generator maintenance expert, read on, and let’s dive into the details together!

What is a generator coolant system?

The generator cooling system is a network of components. It operates in a closed loop designed to absorb the heat generated by the combustion process by circulating coolant. The heated coolant then flows to the radiator, where it releases heat to the atmosphere through the cooling fan and airflow. The cooled coolant returns to the engine and the cycle repeats. This process will effectively prevent a series of problems caused by engine overheating, such as engine seizure and catastrophic damage, reduced performance and efficiency, premature component wear, and complete generator failure.

Its key components include the radiator (heat exchanger), water pump (circulation), thermostat (flow regulation), coolant reservoir (storage and level indicator), cooling hoses (connections), cooling fan (airflow), and pressure cap (system pressure).

Understanding Coolant:
A generator coolant is a specially formulated liquid, usually a mixture of water, antifreeze (ethylene glycol or propylene glycol), and special chemical additives. Common types of coolant are:

Ethylene glycol: the most common, with excellent heat transfer properties and antifreeze protection.
Propylene glycol: a less toxic alternative to ethylene glycol, biodegradable and more environmentally friendly.
Extended life coolant: more advanced and longer life with organic acid technology (OAT) or mixed organic acid technology (HOAT) formulas.

Signs that coolant needs to be checked and added

Overheating: If your generator is overheating, it could be a sign that your coolant levels are low. Overheating can cause severe damage to your generator, so it’s crucial to check the coolant levels if you notice this issue.
Leakage: If you notice any leakage under your generator, it may be due to a coolant leak. In this case, check your coolant levels and inspect the generator for any visible signs of damage.
Low coolant indicator: Most modern generators have a low coolant indicator light. If this light illuminates, it means your coolant levels are low and need to be topped up.
Poor performance: If your generator isn’t performing as well as it used to, it might be because of low coolant levels. This can manifest as a decrease in power output, an increase in fuel consumption, or a rough-running engine.
Generator damage: When you see cracks in the cylinder block, warped cylinder heads, and deformed internal components, this could be caused by severe coolant insufficiency.

how to check the coolant level in a generator

Checking the coolant level in your generator is a fairly straightforward process. Here’s how you can do it:

Remember to always check the coolant level when the generator is cool, as the coolant expands when it’s hot and can give an inaccurate reading. Also, never open the radiator cap when the engine is hot, as it can cause the coolant to erupt and lead to serious burns.

Step 1: Locate the coolant reservoir

The coolant reservoir, also known as the expansion tank, is typically located on the side of the generator engine. It’s a transparent container that enables you to see the coolant level without opening the cap. The exact location can vary depending on the model of your generator, so refer to your owner’s manual if you’re having trouble locating it.

Step 2: Find the dipstick

Some generator models come with a dipstick attached to the coolant reservoir cap. This dipstick is used to measure the coolant level inside the reservoir. If your generator has one, unscrew the cap and pull out the dipstick.

Step 3: Check the coolant level

With the dipstick out, wipe it clean using a non-lint cloth and then insert it back into the reservoir. Pull it out again and look at where the coolant marks the stick. Most dipsticks have two marks: a ‘MIN’ (minimum) and a ‘MAX’ (maximum) mark.

If the coolant level is at or below the ‘MIN’ mark, your generator needs more coolant.
If it’s between the ‘MIN’ and ‘MAX’ marks, your coolant levels are adequate.
If it’s at or above the ‘MAX’ mark, your generator has too much coolant.

How to add coolant to a generator

Once you’ve checked the coolant level and determined that your generator needs more coolant, it’s time to refill. Here’s how to do it:

Step 1: Locate the coolant filler neck

The coolant filler neck, also known as the radiator cap, is usually located on top of the radiator or coolant reservoir. This is where you will add new coolant. If you are not sure where to find it, refer to your BISON generator manual.

Step 2: identify the correct type of coolant

It’s crucial to use the correct type of coolant for your generator. The type of coolant required can usually be found in your owner’s manual. Be sure not to mix different types of coolant as this can lead to engine damage.

Step 3: prepare to add coolant

Before you begin, make sure the generator is cool. Never open the radiator cap when the engine is hot as pressurized hot coolant can erupt out and cause severe burns. Once the generator is cool, slowly twist the radiator cap counterclockwise until you feel resistance. This is the safety stop. Push down on the cap while you continue turning it to remove it.

Step 4: Add coolant

When adding coolant, Slowly pour the coolant into the filler neck, taking care to not overfill. As you fill, pause periodically to let any trapped air escape. This prevents air pockets from forming which can cause overheating issues.

Step 5: Check the Level and seal the system

Once you’ve added coolant, check the level by looking at the side of the coolant reservoir. The coolant should be between the ‘MIN’ and ‘MAX’ marks.

After ensuring the coolant level is correct, replace the radiator cap by pushing it down and turning it clockwise until it’s tight.

Step 6: clean up and dispose of old coolant

If any coolant has spilled during the process, clean it up promptly as it can be harmful to pets and wildlife. Also, remember to dispose of any old coolant in an environmentally friendly manner.

China BISON: leading generator suppliers

This comprehensive guide covers the critical aspects of checking and adding coolant to your generator. Regular maintenance and keeping an eye on coolant levels are crucial for the efficient and reliable operation of your generator.

We highlighted the signs that might indicate a need to check and add coolant, such as overheating, leakage, poor performance, or a low coolant indicator. We also emphasized safety measures, including turning off the generator, wearing protective gear, using the right coolant, working in a ventilated area, and properly disposing of old coolant.

Maintaining proper coolant levels in your generator is crucial to prevent overheating, ensure optimum performance, and extend the generator’s lifespan. As a leading generator supplier, we’re committed to providing you with valuable information about generator maintenance. See more articles on how to keep your generator in top shape.

FAQs

When to check and add coolant?

Regular maintenance is key to the longevity of your generator. As a general guideline, you should check the coolant levels every 100 hours of generator operation or at least once every 3 months, whichever comes first. However, these intervals can vary depending on the model of your generator, so it’s best to consult your owner’s manual for specific recommendations.

What is the use of coolant in the generator?

The coolant in a generator regulates temperature, prevents corrosion, provides lubrication, and withstands extreme temperatures. Regular maintenance is essential for optimal function.