Model W110348 48" Plastic Shim Set for Alum. Super Air Knife
What is an ATEX Cabinet Cooler System?
ATEX Cabinet Cooler Systems are engineered and approved for use upon purged electrical enclosures (not included) found within classified areas. The areas approved are Zone 2 and 22. EXAIR’s ATEX Cabinet Cooler Systems are a low cost and reliable way to cool purged electric control panels found within these environments. They utilize vortex tube technology to produce up to 5,600 Btu/Hr, with no moving parts, which additionally creates a low maintenance solution for cooling your ATEX purged cabinets.
The compact Cabinet Cooler is an easy to use air conditioner that can be installed in minutes through a standard electrical knockout. NEMA 4 and 4X ATEX Cabinet Coolers that match the NEMA rating of the enclosure are available in many cooling capacities for large and small control panels.
Why EXAIR ATEX Cabinet Coolers?
EXAIR’s ATEX Cabinet Cooler Systems have been set apart from the competition by being certified for Zone 2 and 22 environments. Thermostatically controlled systems are recommended for the highest efficiency and include ATEX approved solenoids, also for hazardous environments. EXAIR Cabinet Cooler Systems will install upon your purged enclosure in minutes, require little to no maintenance and operate under the toughest of industrial conditions. If you require low cost, ease of use and/or reliability – an ATEX Cabinet Cooler System will meet your needs.
EXAIR ATEX Cabinet Cooler Systems are available in 8 different cooling capacities from 1,000 Btu/Hr. to 5,600 Btu/Hr. This range of cooling allows for choosing the best fit for your cooling needs without placing additional demand upon your air compressor.
Cabinet Cooler Systems protect your electronics from heat, dirt and moisture and keep your processes running. They are the low-cost solution to messy, high maintenance coolant-based air conditioners with simple installation. With modern technology comes an increased number of small electronic components packed into smaller electronic cabinets. This creates a high internal heat load which increases the failures due to heat. Components will fail, sensors will misread, controls can drift and displays become inaccurate. EXAIR ATEX Cabinet Coolers can solve these problems and prevent lost productivity, shutdown and the expense of new components.
Safety
EXAIR's ATEX Cabinet Cooler Systems are not purged and pressurized control systems and should not be relied upon nor used in place of a purged and pressurized controller. They are meant for use in conjunction with a purged and pressurized control system.
Any control systems and accessories not rated for the hazardous location need to be moved outside of the hazardous area or inside a properly purged and pressurized enclosure which is suitable for the hazardous area.
Thermostat Control
Each different ATEX Cabinet Cooler System is available with a thermostat control or as a continuous operation system. Each of these systems will include a water-dirt filter separator to prevent water condensate and dirt from entering your enclosure and cold air distribution kit used to direct the air for circulation and on to hot spots. ATEX Cabinet Cooler Systems are also available in Type 303 and Type 316SS for highly corrosive environments.
EXAIR Cabinet Coolers provide cold air for large and small control panels and are maintenance free. They have no moving parts to wear out and have a five year “Built To Last” warranty.
NEMA 4 (IP66) ATEX Cabinet Coolers
NEMA 4 (IP66) ATEX Cabinet Cooler systems are dust and oil tight, splash resistant and indoor/outdoor capable. By incorporating a low pressure valve for all air exhaust, the valve closes and seals when not operating to maintain NEMA 4 enclosure integrity.
Thermostat control systems (Models ATEX4815-ATEX4880) are the most efficient system because it will turn itself on and off as needed to cool your enclosure. Includes cooler, solenoid valve and thermostat, filter separator and cold air distribution kit. Models are available in 110VAC, 240VAC and 24VDC.
Continuous operation systems (Models ATEX4715-ATEX4780) include the cooler, a filter separator and cold air distribution kit.
Dual Cabinet Cooler systems (Models ATEX##50-ATEX##80) provide for additional cooling.
Compare These Blowoffs
There are a variety of ways to blow the water from the bottles shown in the photo below, but which method is best? The following comparison of drilled pipe, flat air nozzles, a blower and the Super Air Knife proves that EXAIR has the best choice for your blowoff, cooling or drying application.
Our goal for each of the blowoff choices was to use the least amount of air possible to get the job done (lowest energy and noise level). Compressed air pressure required for each was 60 PSIG (4.1 BAR) which provided adequate velocity to blow the water off. The blower used had a ten horsepower electric motor and was a centrifugal type blower at 18,000 RPM. The table at the bottom of the page summarizes the overall performance. Since your actual part may have an odd configuration, holes or sharp edges, we took sound level measurements in free air (no impinging surface).
Drilled Pipe
This common blowoff is very inexpensive and easy to make. For this test, we used (2) drilled pipes, each with (25) 1/16" (1.6mm) diameter holes on 1/2" (13mm) centers. As shown in the test results below, the drilled pipe performed poorly. The initial cost of the drilled pipe is overshadowed by its high energy use. The holes are easily blocked and the noise level is excessive - both of which violate OSHA requirements. Velocity across the entire length was very inconsistent with spikes of air and numerous dead spots.
Flat Air Nozzles
As shown below, this inexpensive air nozzle was the worst performer. It is available in plastic, aluminum and stainless steel from several manufacturers. The flat air nozzle provides some entrainment, but suffers from many of the same problems as the drilled pipe. Operating cost and noise level are both high. Some manufacturers offer flat air nozzles where the holes can be blocked - an OSHA violation. Velocity was inconsistent with spikes of air.
Blower Air Knife
The blower proved to be an expensive, noisy option. As noted below, the purchase price is high. Operating cost was considerably lower than the drilled pipe and flat air nozzle, but was comparable to the EXAIR Super Air Knife. The large blower with its two 3" (76mm) diameter hoses requires significant mounting space compared to the others. Noise level was high at 90 dBA. There was no option for cycling it on and off to conserve energy like the other blowoffs. Costly bearing and filter maintenance along with downtime were also negative factors.
EXAIR Super Air Knife
The Super Air Knife pair did an exceptional job of removing the moisture on one pass due to the uniformity of the laminar airflow. The sound level was extremely low at 69 dBA. For this application, energy use was slightly higher than the blower but can be less than the blower if cycling on and off is possible. Safe operation is not an issue since the Super Air Knife cannot be dead-ended. Maintenance costs are low since there are no moving parts to wear out.
OSHA Maximum Allowable Noise Exposure
High noise levels are a common problem for many plants. Compressed air noise often exceeds OSHA (Occupational Safety and Health Administration) noise level exposure requirements, resulting in hearing loss to those working in close proximity. The sound level of the Super Air Knife is quiet at 69 dBA, even at high pressures of 80 PSIG (5.5 BAR). Using the Super Air Knife, it is possible to obtain hard-hitting force without the high noise.
OSHA Maximum Allowable Noise Exposure | |||||||
| Hours per day (constant noise) | 8 | 7 | 4 | 3 | 2 | 1 | 0.5 |
| Sound level dBA | 90 | 91 | 95 | 97 | 100 | 105 | 110 |
| OSHA Standard 29 CFR - 1910.95(a) | |||||||
Special Super Air Knives
EXAIR manufactures special Super Air Knives suited to specific application requirements. The shape, dimensions and materials of construction can be modified to fit existing machines and environments.
A special curved stainless steel Super Air Knife holds test tubes in place on a rotating index table.
This curved stainless steel Super Air Knife was manufactured for a laboratory that uses the force of the airflow to hold test tubes in place on a rotating index table. They were able to eliminate the mechanical clips and latches that slowed the test tube removal. This holding method minimized risk of tube breakage and eliminated any chance of puncturing the technician’s rubber gloves.
A PVC Super Air Knife designed to withstand a phosphorus environment.
EXAIR manufactures special Super Air Knives made of plastic. These products are engineered to work under normal operating pressures, providing the same performance as their aluminum and stainless steel counterparts.
This special PVC Super Air Knife was manufactured for a picture tube plant. The softer material was less likely to scratch the picture tube surface and was chemically resistant to the phosphorus which coated the inside.
A flat Super Air Knife, only 11/16" thick, blows plastic fibers from a mold used to make integrated circuit chips.
The flat Super Air Knife is used in a molding machine for integrated circuit chips. Prior to molding the black plastic shells around the silicon wafers, they blow the mold cavity clean of any fine plastic fibers left by the previous cycle. The flat design constructed of corrosion resistant stainless steel was made to fit the tight space of the molding machine.
The double-sided Super Air Knife provides two uniform sheets of laminar airflow.
The double-sided Super Air Knife provides two uniform sheets of air in opposite directions. It is ideal for blowing water from two or more columns of stacked parts (like printed circuit boards) as they are lifted out of a bath or the open halves of a mold. Each side operates independently.
Stainless steel Super Air Knife modified to include extra mounting holes.
As in this example, the Super Air Knife can be modified to include extra mounting holes to suit your application.
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Model W110348 48" Plastic Shim Set for Alum. Super Air Knife -
Model W110348 48" Plastic Shim Set for Alum. Super Air Knife
| Material | Plastic |
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