No matter the time of year, we routinely help customers solve overheating problems with electrical enclosures. Sometimes these problems are ongoing and not dependent on the external environment. Other times, seasonal temperature rises cause enclosure temperatures to creep higher and higher until thermal runaway takes hold and/or components fail.
To prevent an overheating condition, and to keep electronics operational, we help countless customers calculate their heat load and recommend Cabinet Cooler Systems accordingly.
Such was the case for an OEM which contacted me recently with the enclosure below.
Our customer manufactures and installs electrical enclosures for use in industrial environments. This particular enclosure has been in use for several months, and recently encountered an overheating condition on a hot summer day. I’ve had the pleasure of working with this particular OEM on multiple occasions, so along with the photos above, they supplied all relevant information from our Cabinet Cooler Sizing Guide, and even the sketch below.
Gathering details like the sketch above allow us to recommend the best possible solution for the problem at hand. For example, knowing that the cabinet is composed of two sections and completely sealed from each other allowed for installation of (2) separate systems for each side. This allows for separate temperature controls, tailored to the specific devices inside each side of the cabinet halves.
If you have an application similar to the one above, or need assistance with your application, contact an EXAIR Application Engineer.
Summer has not officially arrived in the Northern Hemisphere, according to the calendar, but temperatures have started to push 90 degrees Fahrenheit here in Cincinnati. As the temperatures increase, your electronics may start to feel the heat. High temperatures can cause circuits breakers to trip, controllers to shutdown, and connectors to be very sensitive. We have seen electronics lose machine control, report bad readings, or if the heat is not managed promptly, damage circuitry. EXAIR Cabinet Coolers Systems are a simple, quickly installed and effective solution to heat related problems. Beside being installed in minutes and shipping from stock, they have additional benefits over fans, air conditioners and heat exchangers.
During the heat of the summer, fans, air conditioners, and heat exchangers may fail when you need them most. For instance, a fan and a heat exchanger work because the temperature differential between the ambient temperature and the inside of a cabinet is large. As the temperature rises, the ambient temperature goes up and a fan or heat exchanger lose their ability to remove heat from the cabinet. In a climate controlled environment this works great, in a hot plant floor without air conditioning, it is a recipe for failure.
So if fans aren’t a good solution you may turn to air conditioners in the summer because they can still produce very cold air at much higher ambient temperatures. You will need hours to install them, cross your fingers that they arrive undamaged, hope the condenser and other moving parts don’t fail and provide a drain for the condensate. If you are in a dusty environment, the filters will clog more often in the summer and require more maintenance. As the temperature rises the air conditioning systems run more often which means they pull in more air and particulate that will clog the filters and lead to reliability problems in the compressor. This compressor is subjected to more of a work load in the summer and more airflow restriction, if the filters are not changed often. This may lead to more air condition filters during the summer months.
EXAIR compressed air operated Cabinet Coolers System are a great solution for cooling enclosures. They operated via vortex cooling which requires no moving parts or filters from the outside air. They drop your compressed air temperature 50 degrees Fahrenheit. Mounting requires a compressed air supply, a standard electrical knockout, and the locknut that comes with the Cabinet Cooler System. The cooling is produced immediately with no lag time. A Electronic temperature controller is a available to maintain a temperature of your choosing.
Cabinet Cooler Systems are maintenance free with a clean dry supply of compressed air. Recently, we tested a cabinet cooler that was over twenty years old that still tested to our production standard. The customer was delighted to hear that is was working so well they wanted it returned. Cabinet Cooler Systems are available for NEMA 12, NEMA 4 and NEMA 4X enclosures. Kits include compressed air filtration to keep water, dirt and oil out of your enclosure. If you see an open panel door this summer, look into a Cabinet Cooler Systems. We can help you beat the heat.
EXAIR’s Cabinet Coolers are in stock and ready to ship to you same day if ordered by 3:00 pm EDT. You can have it tomorrow if you like.
Having been born and raised in the northern climates, for me 80 degrees is hot. So when temperatures soar into the 90’s I really struggle to cope. Bad news is that according to NOAA, we are in store for above average temperatures for the remainder of the summer!
High temperatures are not only uncomfortable for we humanoids, electronics suffer as well. The demand for panel cooling is extensive and my company, EXAIR, produces Cabinet Cooler systems. There in lies my dilemma. I would like to wish for the heat to go away but then that would be wishing ill for my company. I’m like a donkey trying to decide between two hay stacks.
So, I will stay in my air conditioned cubical and calculate cooling requirements for customers. I would welcome the opportunity to assist you with your panel cooling requirements. Give me a call at 1-800-903-9247