EXAIR Manufactures Cabinet Cooler Systems to Combat Heat


The photo above depicts an autoclave with its computer control panel situated just above the opening. This particular customer uses their autoclave to process fish in a very controlled manner so they do not damage the meat while processing. The problem is that the controls for such equipment become overheated due to the simple process of the machinery to which they are attached. There are also critical times during the processing when the door is opened and heat as well as steam in this case waft out and up into the control box above, thus heating the components inside to a level that can cause intermittent or permanent failure.

Autoclaves are pressure chambers used within industrial processes needing higher temperatures and pressures than ambient air. They are only one example of machinery that associates the use of electronics on or near the heated portion of the “machine”. Other such examples are ovens, furnaces, steam turbines, metal casting machines, injection molding machines, extrusion lines and web processing lines.

Cabinet Cooler in steel mill
This Cabinet Cooler is installed above a hot steel processing line.

The thing that makes these kinds of applications sometimes difficult is the original decisions taken by the designer to locate the control panel in what they feel is the most appropriate and convenient place on the machine for the operators. However, as the photo above demonstrates, the heat generated by the process is sometimes the last consideration when trying to package everything in a nice, tidy package as well as to keep the machine foot-print of an already large item to be as small as possible. I’m working with the mindset that having a remote mounted control cabinet to keep the sensitive electronics away from the heat source would be the ideal situation. But as we all know, ideal isn’t always and most likely will not be what you are left to deal with.

So, when confronted with a similar situation, what is a controls engineer to do? That’s where EXAIR Cabinet Cooler system comes into play. EXAIR makes Cabinet Coolers to keep the temperature of those sensitive electronics down at a reasonable operating level for issues such as high process heat load as given above, or perhaps it is just a really hot summer and you are in a facility without air conditioning. We manufacture Cabinet Cooler Systems in NEMA 12, 4 and 4X configurations to cover a wide variety of application variables.

In the application above, we have recommended our Model 4825SS (NEMA 4X Cabinet Cooler System, 1700 Btu/hr., with thermostat control). The customer’s calculated heat load was approximately 600 Btu/hr. according to the data they provided. When I made the recommendation, I did take into account the periods where the heat will be billowing out of the autoclave as well, thus the reason for the recommendation of a unit one size larger than I would normally recommend. Not to worry though. The included thermostat control will maintain the cabinet temperature at 95°F (35°C) at all times without wasting precious compressed air.

If you have an application where computer controls for a hot process are overheating on you, kindly consider contacting one of our Application Engineers or check out our handy Case Studies today to have a better understanding of how an EXAIR Cabinet Cooler System can help take away the heat and keep your processes humming along nicely.

Neal Raker, International Sales Manager


EXAIR Cabinet Cooler Systems Speak for Themselves

Recently I had the pleasure of assisting a customer with an Air Knife application.  It wasn’t the “textbook” blow off situation, but it was another fairly common use: environmental separation.

That’s the fancy term for keeping liquids, gases, fumes, etc. inside a machine or enclosure, and/or away from personnel or equipment that might not function properly when exposed to said contaminants.  In this particular situation, they just wanted to keep coolant spray in a CNC machine away from the lens of a vision inspection system’s lens, inside the machine.  Our Super Air Knives are so good at this, they’re even used in the motion picture industry to keep droplets off the camera lens when filming scenes where water is being sprayed everywhere…just like the coolant spray inside a CNC machine.  So they purchased a Model 110206 6″ Aluminum Super Air Knife Kit to blow a light curtain of air in front of the lens.

Now, I know that’s a nice little blog, all by itself, but it’s an application that might not have stayed in my mind much longer than the time to process the order, had it not been for an additional detail from our conversation:

They called because they were very happy with our Cabinet Cooler Systems.

Which they installed on some control panels in their machine shop, years ago, and were famously preventing electrical component faults where the refrigerant-operated coolers had failed.

THIS is where excellence in customer service, quality manufacturing, error-free and on-time shipping (99.997% on time for 17 years and counting) make ALL THE DIFFERENCE…it gets you remembered the next time a user has a question about something that might be related to something similar.  And in this case, the only similarity was that both products are compressed air operated.

When you think of compressed air, we want you to think of EXAIR.  And it appears to be working.  I’m proud to be here, and I eagerly await your call to find out how we can provide a solution to your compressed air question or concern.

Russ Bowman
Application Engineer
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EXAIR Cabinet Cooler Systems Stabilize Relative Humidity

EXAIR Cabinet Cooler Systems are able to cool your electrical panels using only clean, dry compressed air. Other systems such as cooling fans or heat exchangers use ambient air full of dust and humidity. The temperature of ambient air also fluctuates with the seasons and will be very warm in the summer months, which degrades their ability to cool as the temperature rises. One of the myths about compressed air cooling is that humidity from the compressed air source will enter the cabinet. A water/dirt filter separator will prevent condensate from entering the cabinet and since relative humidity is carried away with the hot air exhaust, relative humidity will stabilize to 45%. This video shows how quickly EXAIR’s Cabinet Cooler Systems will have an effect on relative humidity.

Dave Woerner
Application Engineer