Is Your Glycol Cool Enough?

Posted Thursday, 19 April 2018 10:27 by Martin King in Process Chiller 101

Throughout history, one thing every beer drinker can agree on has is that no one wants to be served a warm glass of brew. The whole point of a beer is to go get that frosty, refreshing kick we all desire, especially on a hot summer’s day.

That's why a process chiller, such as those manufactured by Legacy Chillers, is so important to the success of restaurants and bars. This is especially important in a city that prides itself on great beer service, such as Portland, Oregon. A big part of a good quality chiller is its ability to dispense glycol that delivers perfectly chilled beer. An icy cold beer is always in order to quench your customers' thirsts and keep them coming back for round after round of the good stuff. Since glycol is such an important role in the cooling process, it is imperative to make sure your system is always working to its highest potential. The easiest way to keep your glycol dispensing system performing is to perform scheduled routine maintenance.

If your process chiller is not performing well, here is a list of troubleshooting tools to try before calling in the experts:

-Is the cover of your glycol bath closed? If you leave the cover of your glycol bath open, you can allow water vapor to dilute and weaken your glycol.

-Is your glycol bath the right temperature? Make sure to regularly check the temperature of your glycol bath (weekly is ideal, but no less than biweekly) to ensure that it's within the optimal range as noted by the manufacturer. Many glycol chillers are equipped with a temperature gauge on the outside, but if you are experiencing issues, it's worth your time to manually measure the temperature with a thermometer.

-Is your beer being dispensed at the faucet at the right temperature? Even if the chiller unit is reading the correct temperature, you should still check the temperature of the beer coming out of the faucet.

-Is the motor running smoothly? Observe your glycol chiller and listen for any signs of malfunctioning. If you hear anything out of the ordinary, make sure to call a technician immediately to avoid any larger issues down the road.

-Are the pumps operating correctly? Ensure that the connections are tight and that all the insulation is accounted for.

-Is the condenser free of dirt and other obstructions? Check your condenser every three to five weeks and clean as necessary. The condenser won't require a thorough cleaning with every check, but every so often, you'll want to remove the grills to get access to the condenser fins.

-Is there any damage to your trunk lines? When properly installed, your trunk line is very durable. However, over time, it's possible to experience ice buildup due to insulation damage.

If you go through the entire checklist above and still have problems that persist, make sure to call a maintenance technician. If you are in the search for a new process chiller, visit to get your free quote today!

Beer Fermentation 101

Posted Friday, 06 April 2018 11:04 by Martin King in Process Chiller 101

Everybody loves an ice cold beer. BBQs, late night bonfires at the beach, and gatherings with friends all call for a cold brew. With summer right around the corner, these social get togethers will become more frequent.  Wouldn't it be nice to know just how America's favorite social drink is made?  It starts with fermentation.


Fermentation is a process where yeast turns the glucose in wort to ethyl alcohol and carbon dioxide gas. This process is what gives beer its alcohol content and carbonation. The fermentation process time varies depending on temperature, type of yeast, and if you are making a lager or beer. Most beers made with dry yeast will take 1-3 days to ferment, and about 8-14 days if liquid yeast is used. Lagers on the other hand take quite a bit longer during the fermentation process.  Lagers need to ferment at a cooler temperature and can take up to two weeks or more.

Temperature Control:

Temperature plays a big role in the beer fermentation process. Temperatures should be between 68 degrees and 72 degrees for beer, and between 45 degrees and 55 degrees for lagers. Fermenting at a higher temperature than recommended can produce fruity-flavored esters and harsh-flavored fusel alcohols. Also if the temperature gets too high, fermentation may stop altogether. It is very important to keep your beer or lager at the right temperature while fermenting.  This can be quite difficult without the use of a process chiller.

Keeping Brew Cool:

Before the invention of the process chiller, beers were brewed during cooler months and stored in cellars or caves to maintain proper temperatures. Today we are lucky enough to have the help of chillers to keep brew at the correct temperature year-round.

Air Conditioning:

Another simple method of keeping your brew cool is to place it directly in front of an air conditioning vent. This will allow your brew to receive the initial cool blast of air before it circulates through the building. Of course this is not a great method when producing large amounts of brew, but would work okay in a home brewery.


Some home brewers also recommend placing beer in a basin filled with ice water. However the ice will need to be replaced at least twice a day in order to ensure proper cooling.

If you're looking to produce a high-quality brewed beverage, it's important that you choose a proper temperature control method.  Legacy Chiller Systems has lots of options that will keep your brew at precisely the correct temperature with very little effort. If you're serious about quality brewing, consider adding a Legacy Chiller to your beer fermentation process.

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5 Manufacturing Trends Coming This Year

Posted Friday, 30 March 2018 10:20 by Martin King in Process Chiller 101

The long-term direction of the manufacturing industry is in the process of being changed by some cutting edge trends. These trends are expected to have a significant impact this year and in years to come. Industry professionals in manufacturing should always have a strong understanding of the industry and what the future of manufacturing looks like.
There are so many new and exciting things happening this year in the manufacturing sector.  Here is a list of the top 5 trends this year:

Efficient Thinking
One of the biggest challenges manufacturers face today is determining how to achieve operational goals such as reducing costs, improving efficiency, increasing safety, supporting compliance and growing product innovation.
Companies are beginning to recognize the value of thinking strategically and operationally, as well as having a better understanding of the importance of data management. Gathering operational data, analyzing it and leveraging valuable information from manufacturing processes is creating positive change in the industry.

Next Level Industry
The rise of the manufacturing industry has given manufacturers more opportunities to utilize advanced manufacturing capabilities throughout the product lifecycle.
Recent advances can increase production processes, efficiency, and improve safety on the factory floor.
Manufacturers can improve productivity and efficiency, business needs, development of new services, and increase the speed products are brought to the market.

Additive Manufacturing
There's no doubt about it, the increasing acceptance of additive manufacturing processes has led to a widespread adoption in the manufacturing industry.
For example, heavy equipment manufacturers produce machinery with product lifespans measured in decades. From its beginnings as a plastic prototyping process, additive manufacturing has grown and developed greatly over the last 30 years or so, and doesn't seem to be going anywhere.

Groundbreaking advancements in technology are propelling manufacturing into a new age of automation. Robotics, machine learning and artificial intelligence are said to be taking over the manufacturing industry in the years to come.
Companies will soon have to decide what to automate (and what not to automate) in order to keep their company running at its highest potential.
Technology makes it possible to not only automate tasks on the show floor, but also to automate jobs in other areas of a business, such as maintenance, management and administration.

Augmented Reality
This one is still debatable.  The concept of augmented reality is definitely not new to the manufacturing industry, but this new technology is still in its early stages and its potential impacts on the manufacturing industry have yet to be realized.
AR is a trend on the rise, though. Many companies are currently exploring the use of wearable technologies, including head-mounted devices integrated with AR. These devices provide employees access to data that can help perform a certain task while staying safe on the job.

Some of these manufacturing trends might still seem quite futuristic, but that's really not the case. AR is currently being used in manufacturing facilities across the United States and around the world. And companies utilizing it are experiencing a number of benefits, including cost reduction, speed increases, fewer errors, and overall improved safety.
Here's to a bright future for the manufacturing industry.  The industry is on the rise and there's still much more to come.

A Dairy Chiller's Past

Posted Thursday, 22 March 2018 11:01 by Martin King in Process Chiller 101

Years before the invention of pasteurization and refrigeration, people had to find ways to store dairy production and keep it cool while moving from place to place. In this day and age, finding a way to keep dairy products cool seems almost impossible.  Believe it or not, there were some very effective methods used in the past. Some are even still used today in certain areas of the world.

Kefir Grains:

Culture complexes of yeasts and bacteria are used all over the world.  Yeast and bacteria create kefir, yogurt, and cottage cheese. When kefir is added tomilk, something amazing happens. These cultures go to work by speeding up the decaying process of milk but keeping it safe to drink.  "Good" microorganisms grow strong enough to stop "bad" ones from growing. Nowadays, there are still many products available in supermarkets with "friendly bacteria" or “probiotics."  These products are derived from the traditional cultures, and are packed with health benefits.

So what exactly is kefir? Kefir is a grain that is loved by most health food enthusiasts. Added to milk, kefir grains act on sugar to produce acidic byproducts. Kefir drinks can be made and kept at room temperature.


Lacto-fermentation is a process that results in yogurt.  Yogurt can naturally be made on a windowsill. Using a different starter culture that usually includes lactobacillus bulgaricus and streptococcusthermophilus can create a homemade refrigerator, and is still used today in some poor countries.

Slate and Terra Cotta Fridges:

In Victorian times, manypeople would use a huge slab of slate on which dairy would have been stored. In warm climates the cooling properties of slate were great at keeping cheese and milk at a low temperature for almost as long as in our modern day refrigerators.
A DIY fridge is actually quite simple to construct. All you need is a few unglazed terra cotta pots and sand. This cooling method has been used in countries around the world for hundreds of years.

Given that the refrigerator is only an invention of the last sixty years in human history and that it consumes up to 20% of our household's energy, we could do well to learn how to live without it for the sake of the planet and discover a range of new tastes and techniques in the process.

To find out how a process chiller can help you visit 

The World Of A Milk Chiller

Posted Wednesday, 14 March 2018 11:14 by Martin King in Process Chiller 101


The World Of A Milk Chiller

We all know milk comes from cows.  But how does milk get from the cow to your kitchen table?

The process of pasteurizing milk has many steps, but none is as important as the cooling process. Cows eat as milking machines automatically pump milk into a refrigerated tank, and milk then goes for pasteurization. This is where the dairy chiller comes into play.  Pasteurization heats milk.  Chillers remove heat from pasteurization and cool milk down to an appropriate temperature. Keeping milk at a cool temperature prevents the milk from deteriorating. This keeps milk fresh and extends its storage life.

Which Dairy Chiller Should You Choose

The type of dairy chiller you need will mostly depend on the size of your operation. Dairy chillers of the past used a double-walled tank with water and cooling coils that surround the milk tank. A compressor runs and builds ice around the coils in the double-walled area. Once the ice reaches a certain thickness, the compressor shuts off, and ice cools the milk rapidly. If you have a small dairy farm of up to 40 cows, this older design of dairy chiller will work perfect for you.

If you have a larger dairy farm you will most likely need a chiller with a different type of design. Plate chillers work well for large productions.  Plate chillers can use a glycol and water mixture to cool milk, which pushes milk through stainless steel plates with a glycol and water mixture on the other side. The mixture cools milk to an appropriate temperature.

Air-Cooled vs. Water-Cooled Chillers

Dairy chillers come in air-cooled and water-cooled varieties. Air-cooled chillers transfer heat to the surrounding air, while water-cooled chillers transfer heat to a water source, such as a cooling tower. Water-cooled chillers require a mechanical room because they have special equipment that air-cooled chillers don't have. Air-cooled chillers require an open, airy space because they rely on a consistent stream of fresh air to function.

You should contact an expert to help determine whether an air-cooled or water-cooled dairy chiller would best suit your needs. Water-cooled chillers are more expensive than air-cooled chillers, but they have lower energy costs. They also require more maintenance, but well maintained water-cooled chillers can have longer lifespans than air-cooled chillers. Air-cooled chillers are great to use in areas that have water shortages, because they do not need water to function. 

At Legacy Chillers, one of our expert engineers can recommend the perfect chiller that suits the size of your operation.  Contact us anytime at for more information or to get a FREE quote.