Last week I wrote about the Thermostat Options for Smart Cooling utilizing the EXAIR Cabinet Cooler Systems. You can see read that blog post here. Today we will touch base on the Side Mount Kits as an option to expand the flexibility for the installation and operation.
Sometimes there isn’t room above an electrical panel to fit the Cabinet Cooler, even though it takes just 5″ to 7.25″ of space above. In these cases, the Side Mount Kit is available to handle any of the Cabinet Cooler sizes and NEMA ratings. EXAIR offers (6) models of Side Mount Kits –
Model 4909 – For NEMA 12 Cabinet Coolers up to 550 BTU.hr (139 Kcal/hr), Aluminum construction
Model 4910 – For NEMA 12 Cabinet Coolers , 650 BTU//hr (165 Kcal/hr) and higher, Aluminum construction
Model 4906 – For NEMA 4 and 4X Cabinet Coolers up to 550 BTU/hr (139 Kcal/hr), Type 303 Stainless Steel
Model 4907 – For NEMA 4 and 4X Cabinet Coolers, 650 BTU/hr (165 Kcal/hr) and higher, Type 303 Stainless Steel
Model 4906-316 – For NEMA 4 and 4X Cabinet Coolers up to 550 BTU/hr (139 Kcal/hr), Type 316 Stainless Steel
Model 4907-316 – For NEMA 4 and 4X Cabinet Coolers, 650 BTU/hr (165 Kcal/hr) and higher, Type 316 Stainless Steel
The NEMA 4 and 4X Cabinet Coolers must be mounted vertically for the unit to properly resist the ingress of liquids and maintain the integrity of the cabinet NEMA rating.
The Side Mount Kits install into a standard electrical knockout (1-1/2 NPS) for easy installation.
If you have any questions about the Side Mount Kits, Cabinet Coolers and/or Thermostat Options or any of the EXAIR Intelligent Compressed Air® Products, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.
I had the pleasure of speaking with the Maintenance Manager at a manufacturing plant for a global automotive supplier earlier this week. They have a whole factory floor full of machinery that operates from PLC controls. The space is not climate controlled, and the temperature broke 100°F the day before. This triggered some high temperature warnings on several control panels, but that was the worst thing that happened…luckily.
It should go without saying that the automotive industry is a big deal in the United States…maybe even a bigger deal here in the Middle Atlantic region, and a HUGE deal for those of us within a few hour’s drive of Detroit, Michigan…the home of the Big Three. Disruptions in their supply chains can affect not only the final production of automobiles, but also other suppliers, vendors, and service providers in separate “links” of that chain. So, if my caller has a breakdown and can’t ship parts, many other suppliers’ lines may be slowed or stopped, because if Detroit can’t make cars without one supplier’s parts right now, they won’t need the others’ parts right now either. That means reliability is paramount.
This is a “textbook” situation for EXAIR Cabinet Cooler Systems. They’re installed in minutes, have no moving parts, and require only a supply of compressed air for operation. If that air is clean & dry, they’ll operate darn near indefinitely, maintenance free. Thermostat Control turns them off & on as needed. I’ve talked to more than a few users who were (pleasantly) surprised when a Cabinet Cooler System activated on the first hot day in the spring, after not seeing it come on at all, after that last hot day near the end of the previous summer.
Back to the situation at hand – the Maintenance Manager had gathered Sizing Guide data for a couple of enclosures. You can submit it through our website, or email it in, but it only takes a minute; we do it over the phone all the time. So I did, and quoted the appropriate Cabinet Cooler Systems, which were ordered soon after. They were installed the next day, with a promise of more to come.
Are you concerned about high temperatures this summer causing problems on your control panels? EXAIR’sElectronic Temperature Control (ETC) can be used with an EXAIR Cabinet Cooler to maintain precise control of the temperature inside of the cabinet. The ETC is available in both 110 and 240 VAC and is compatible with all Cabinet Cooler Systems.
After taking a few quick measurements, fill out the Cabinet Cooler Sizing Guide and an Application Engineer will be in touch with you to provide the most suitable system for your conditions. Don’t wait until the heat becomes a major problem, get yourself a Cabinet Cooler installed today and stop worrying about those high ambient temperatures!!
If you watched the Webinar we hosted recently (if not, Watch It here) then you know that the EXAIRCabinet Cooler System is an intelligent solution for electrical enclosure cooling. The use of a Thermostat Control system is a key component to a system that provides the needed cooling while keeping compressed air usage to a minimum. There are several choices available, and I will cover those for you today.
The thermostat control systems are the most effective way to operate a Cabinet Cooler. They work by activating the the cooler only when the internal temperature of the enclosure reaches a preset, critical level. Thermostat controlled cooler systems are the best option when a cabinet will experience fluctuating heat loads, caused by operational, environmental, and seasonal changes.
Cabinet Cooler Systems that are ordered from the factory with thermostat control include a solenoid valve and thermostat. The solenoid valve is available in 110-120VAC, 50/60 Hz, 240VAC, 50/60 Hz, and 24VDC and is UL Listed and CE and RoHS compliant. The thermostat is rated for 24V-240V AC or DC, 50/60 Hz and is UL Recognized and CSA Certified.
The thermostat is factory set at 95°F (35°C). It will typically hold an internal cabinet temperature to +/- 2°F (1°C). The thermostat can be adjusted up or down if a different internal temperature is desired by turning the slotted temperature adjusting sleeve, with a 1/16 turn being approximately a 5°F change.
The solenoid and thermostat components are rated to match and maintain the Cabinet Cooler System and cabinet NEMA rating, and can be NEMA 12, NEMA 4 or NEMA 4X. A Thermostat Control can be added to an existing Continuous Operation Cabinet Cooler System, please consult the factory for help in selecting the right kit.
If you have any questions about the Cabinet Coolers and Thermostat Options or any of the EXAIR Intelligent Compressed Air® Products, feel free to contact EXAIR and myself or one of our Application Engineers can help you determine the best solution.
Any realtor will tell you that the three most important factors in selecting a property are location, location, and location. This simply means that houses with similar features – number of bedrooms, yard size, structure, garage (or not,) basement or not,) etc. – can be found in a lot of very different neighborhoods. Whether you want to live somewhere that’s convenient to the highway, close to (or not so close to) work, near your favorite activities, etc., odds are you can find a house that meets your material needs & wants within those geographical confines. Hence, location is your #1 consideration. And your #2 and your #3 as well…my lovely bride is a real estate professional, so I have this on good authority. And, so you know, #4 is price, and #5 is condition.
Electrical and electronics controls professionals will tell you that three of the most important things to protect their equipment from are heat, moisture, and dust. If you’re looking for a durable, reliable, and low cost method for that, we’ve got the solution: the EXAIR Cabinet Cooler System. Selection of the right system comes down to determining your heat load, and…the reason for today’s blog…the LOCATION in which it will be installed.
Let’s say it’s a control panel for one of the machines on a factory production line…indoors & dry. Our NEMA 12 Cabinet Cooler Systems provide protection against dust and oil from entering the enclosure.
If the enclosure is outdoors, or indoors but subject to water spray (like in a wash-down area,) our NEMA 4 Cabinet Cooler Systems are oil tight, dust tight, AND splash resistant. They ensure the inside of the enclosure stays dry through the use of a low pressure relief valve that seals when the cooler is not operating, maintaining NEMA 4 integrity at all times.
Our NEMA 4X Cabinet Cooler Systems are made of stainless steel, and are commonly specified for food service area installations, and in corrosive environments. They’re also oil tight, dust tight, and splash resistant. These are also available in Type 316 Stainless Steel construction, for especially harsh conditions, or when this is otherwise specified due to the nature of the installation, such as critical food grade or pharmaceutical areas.
Regardless of the NEMA rating called for by the location, all EXAIR Cabinet Cooler Systems are available with a Non-Hazardous Purge option, which provides a slight positive pressure through a low (1 SCFM) air flow when internal temperature is below the thermostat setpoint and the solenoid valve is closed. This provides constant and reliable protection, even if the enclosure is not perfectly sealed, even in especially dirty or dusty environments.
High Temperature Cabinet Cooler Systems are also available when ambient temperatures can exceed 125F. These are popular in foundries, glass production facilities, and even non-air conditioned spaces in particularly warm climates.
If you’ve got sensitive, mission-critical electrical or electronic enclosures that need reliable heat protection, EXAIR has the solution you’re looking for. If you know the required cooling capacity for your enclosure, you can select the right system directly from our website. If you’d like help in calculating your heat load, you can use our Cabinet Cooler System Sizing Guide…just fill in the blanks and click “submit” – your request will be forwarded to an Application Engineer for immediate attention. Or, if you’d rather, just give me a call. We calculate heat loads over the phone all the time; it only takes a minute.
Warmer temperatures are quickly approaching, which may seem like a welcome change for personal reasons, but in a processing line, the increased temperatures can wreak havoc on sensitive components found in an electrical control panel.
EXAIR Corporation will be hosting a FREE webinar titled “Intelligent Solutions for Electrical Enclosure Cooling” on May 23, 2018 at 2:00 PM EDT.
By attending this interactive session, you will learn the difference between the 3 most common NEMA ratings for electrical control panels found in an industrial setting, NEMA Type 12, 4 and 4X. We’ll provide examples of traditional, yet unreliable, methods of cooling and the concerns associated with using these types of devices.
Next we will explain how ignoring heat related issues can cause machines to shut down due to failed electrical components, resulting in lost production and increased maintenance costs, negatively affecting a company’s bottom line.
In closing, we’ll show how using an engineered, compressed air operated solution can reduce downtime by providing a low cost, maintenance-free way to cool and purge control panels with no moving parts.
A food and beverage company contacted EXAIR, as they were having some issues with their air conditioning panel coolers. The units were located near ovens and the ambient temperatures were elevated. During the summer months, the additional rise in temperature caused the air conditioning systems to under-perform. The electronics were overheating and shutting down, causing production stoppage. They needed a better way to keep the internal circuits cool during the hotter months.
The cooling capacities of the air conditioning panel coolers were over-sized to compensate for the high ambient conditions. With the finicky nature of Freon systems, 8,000 BTU/hr units were required. With the additional heat from summer, they had to continuously monitor and maintain the condenser units to keep them from running too hot. This caused unneeded strain to their maintenance department, as it took time away from their normal duties. They decided to contact EXAIR to see if our Cabinet Coolers could help in this situation.
Under normal conditions, refrigeration systems still have to be maintained by replacing filters, cleaning condensers, and checking compressors to prevent any failure. Under elevated ambient conditions, it is very difficult to keep the Freon cool enough to operate adequately and the refrigeration compressor from over-heating. EXAIR Cabinet Coolers do not use Freon or compressors to cool. They use the power of a Vortex Tube which only needs compressed air to generate cold air. With no moving parts to wear or unsafe chemicals to leak, they can keep the electrical components cool inside a panel for a very long time.
For sizing the EXAIR Cabinet Coolers, I needed some additional details. I sent them the Cabinet Cooler Sizing Guide to help me determine the correct cooling capacity. The information was as follows:
Height: 2200mm (87 inches)
Width: 800mm (31 inches)
Depth: 800mm (31 inches)
Internal heat load: 100 watts
Maximum Ambient: 70 deg. C (158 deg. F)
Required Internal Temp: 35 deg. C (95 deg. F)
NEMA Rating: NEMA 4X
Solenoid Voltage: 24Vdc
As an added note: they requested 316SS for anti-corrosion to be used for the Food and Beverage industry.
From my calculations, the ambient temperature was generating roughly 2,100 BTU/hr of heat on the external surface of the electrical cabinet. The internal heat load was 100 watts or 341 BTU/hr. Combining the values, the total heat load was 2,441 BTU/hr. For the air conditioning units, they had to over-size the units to 8.000 BTU/hr of cooling capacity to remove 2,441 BTU/hr of heat. This large difference is because of the high ambient conditions. The EXAIR Cabinet Coolers do not have Freon to keep cool; so, the need to over-size is not necessary. For the above electrical panels, I recommended a model HT4840SS-316-24VDC Cabinet Cooler System. The cooling capacity is 2.800 BTU/hr, and it will keep the electrical components cool to 35 deg. C (95 deg. F) even during the hotter months of summer.
With the EXAIR Cabinet Cooler Systems, we can offer a variety of different options to accommodate different applications. For the food and beverage company above, the HT4840SS-316-24VDC was needed to meet the NEMA 4X rating of the panel and the 316SS construction for washdowns and corrosion resistance. The “HT” at the beginning of the model number is for the High Temperature option. This allows the Cabinet Cooler to operate in high ambient conditions between 52 deg. C to 93 deg. C (125 deg. F to 200 deg. F respectively). The system comes with a filter, cold air distribution kit, a thermostat and a solenoid valve. The thermostat is preset at 35 deg. C (95 deg. F) and operates the a 24Vdc solenoid valve to reduce compressed air consumption. EXAIR stocks many different sizes and options to help reduce any downtime. So, when an A/C system quits or an electrical panel faults out due to overheating, EXAIR can ship one out quickly to get the system up and running again.
If you have electrical panels over-heating or air conditioning units under-performing, you should try an EXAIR Cabinet Cooler. You can fill out the Cabinet Cooler Sizing Guide and an Application Engineer can determine the best model to keep your operations running; even during the summer months.