It happens when you least expect it. High temperatures can cook the electronics that control your machines, resulting in erroneous readings, trip-outs or fried circuit boards. When hot weather causes the electronics inside a control cabinet to fail, there is a panic to get the machinery up and running again. There are several cooling options out there and it's important to know the facts.

Fans
Opening the panel door and aiming a fan at the circuit boards is a bad idea.
• It is an OSHA violation that presents a shock hazard to personnel
• The fan blows hot, humid, dirty air at the electronics
• The cooling effect is minimal
• It is likely to fail again since the environment is still hot

Refrigerant Panel Air Conditioners
These coolers are prone to failure in dirty, industrial environments when dust and dirt clogs the filter.
• It takes almost a day to install
• Vibration from machinery causes refrigerant leaks and component failures
• Compressor life expectancy is typically 2.5 years of continuous operation
• It requires a floor drain for the condensation
• Thermostat control can decrease compressor life
• Average cost for replacing a bad compressor is $750

Heat Exchangers and Heat Pipes
These have serious limitations. On hot summer days when the temperatures of the room and inside the enclosure are about equal, there's not enough difference for effective heat exchange.
• They fail when dust and dirt clogs the filter
• The cooling capacity is limited due to ambient conditions

"Plastic Box" Cooler
The "plastic box cooler" from a competitor uses an inaccurate mechanical thermostat that's designed for liquids. This thermostat has a poor ability to react quickly to changes in air temperature. It costs up to 85% more to operate than EXAIR's ETC Cabinet Cooler® System with the same SCFM rating and Btu/hr. output.
• Electronics can overheat before it turns on
• It runs far longer than necessary before shutting off
• It makes the enclosure temperature cooler than needed
&bul l; Increased cycle time wastes compressed air

EXAIR Cabinet Cooler® Systems
EXAIR has a complete line of Cabinet Cooler Systems to dependably cool and purge your electrical enclosures. They convert an ordinary supply of compressed air into clean, cold 20ºF air. They mount in minutes through an ordinary electrical knockout and have no moving parts to wear out. Compressed air filtration is provided that keeps water, oil and other contaminants out of the enclosure.
• There is no room air filter to clog
• An accurate electrical thermostat minimizes compressed air use
• Al l Cabinet Coolers are UL Listed
• Ours are the only CE compliant compressed air powered coolers

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Complimentary AC Sensor With Purchase
If overheated control panels, circuit boards and tripping breakers gave you fits last summer, you don't have to go through it again this year. It’s easy to solve the problem now. EXAIR’s low cost Cabinet Coolers are flashlight-sized, and can be installed in minutes. Now, when you order one of our Cabinet Cooler® Systems by July 31, 2010, we’ll include a complimentary AC Sensor ($46 value). The AC Sensor lights up and beeps when AC is present. It's great for testing circuit breakers and wall receptacles along wi th finding breaks in a power cord. >>More.

How It Works
Compressed air enters the vortex tube powered Cabinet Cooler and is converted into two streams, one hot and one cold. Hot air from the vortex tube is muffled and exhausted through the vortex tube exhaust. The cold air is discharged into the control cabinet through the cold air distribution kit. The displaced hot air in the cabinet rises and exhausts to atmosphere through the cabinet air exhaust at a slight positive pressure. Thus, the control cabinet is both cooled and purged with cool, clean air. Outside air is never allowed to enter the control panel. >>More.

Try A Cabinet Cooler System Without Risk
Are you thinking of trying one of the EXAIR products? EXAIR unconditionally guarantees its cataloged products for 30 days to all U.S. and Canadian customers. If you are not satisfied for any reason within that time, you may return the product for full credit with no restocking charge. Of course, this is in addition to the Five Year "Built To Last" Warranty that applies to all of our compressed air products.