Cabinet Coolers®

Stop electronic control downtime due to heat, dirt and moisture!

Cabinet Coolers maintain NEMA 12, 4 and 4X integrity and are

and

Compliant

What are EXAIR Cabinet Coolers?

Why EXAIR Cabinet Coolers?

The vortex tubes incorporated in the EXAIR Cabinet Cooler Systems are constructed of stainless steel. The wear, corrosion and oxidation resistance of stainless steel assures long life and maintenance-free operation. 

All EXAIR Cabinet Coolers are UL Listed and CE compliant.

Applications

• Programmable controllers
• Line control cabinets
• Motor control centers
• Relay panels
• NC/CNC systems
• Modular control centers
• CCTV cameras
• Computer cabinets
• Cool laser housings
• Electronics scales
• Food service equipment

Advantages

Special Cabinet Coolers

• Low Cost
• Compact
• Quiet - less than 75 dBA
• Install in minutes
• Maintain NEMA 12, 4 and 4X integrity (IP54 and 66)
• Stabilize enclosure temperature and humidity
• No CFC's
• No moving parts - maintenance free
• Mount in standard electrical knockout
• Stop nuisance tripping
• Stop heat damage
• Eliminate fans and filters
• Eliminate lost production
• Stop circuit drift
• Stop dirt contamination
• Provide washdown protection
• Cooling capacities to 5,600 Btu/hr. (1411 Kcal/hr.)

• High temp. models for ambients up to 200°F (93°C) available
• Type 316 stainless steel available
• Purge models for non-hazardous locations available

How Cabinet Coolers Work

Compressed air enters the vortex tube powered Cabinet Cooler and is converted into two streams, one hot and one cold. (For more information on vortex tube operation, see Vortex Tubes). 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.

Selecting the Right Cabinet Cooler Model

EXAIR Cabinet Coolers are available with or without thermostat control. The continuous coolers (Model 4200 and 4700 series) are recommended when constant cooling and a constant positive purge are desirable. The thermostatically controlled systems (Model 4300 and 4800 series) save air by activating the cooler only when internal temperatures approach critical levels. The adjustable thermostat is factory set at 95°F (35°C). Thermostatic systems are recommended where heat load fluctuates and continual purge is not required.

All EXAIR Cabinet Cooler Systems contain a Cold Air Distribution Kit to circulate the cold air throughout the enclosure. In order to ensure optimum performance and that no moisture enters your electrical enclosure, it is critical that all EXAIR Cabinet Coolers are supplied with clean, filtered air at all times and we recommend the use of a 5 micron Automatic Drain Filter for the compressed air supply. See below for more details.

Heat Can Stop Your Machines

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. Cooling the electrical cabinet can eliminate these problems, but how will you do it?

Heat Exchangers and Pipes These have serious limitations when it comes to summer time heat. In many cases, the temperature of the hot plant on a summer day is close to that inside the enclosure. There is not enough difference in temperature for a decent heat exchange.

Refrigerant Panel Air Conditioners These coolers are expensive, take almost a day to install, and are prone to failure when dust and dirt clogs the filter. Vibration from machinery contributes to component failures and loss of freon. Life expectancy for most compressors is rated at 2.5 years of continuous operation. Average replacement cost for a bad compressor is $750 plus installation. Often, a floor drain is not readily available for the condensation tube.

Environmental Considerations

NEMA 12 (IP54) Cabinet Coolers (dust-tight, oil-tight) are ideal for general industrial environments where no liquids or corrosives are present.

NEMA 4 (IP66) Cabinet Coolers (dust-tight, oil-tight, splash resistant, indoor/outdoor service) incorporate a low pressure relief valve for both the vortex tube and cabinet air exhaust. This valve closes and seals when the cooler is not operating, to maintain the integrity of a NEMA 4 enclosure.

NEMA 4X (IP66) Cabinet Coolers offer the same protection as NEMA 4 but are constructed of stainless steel for food service and corrosive environments.

NEMA 12 Specifications

NEMA 4 Specifications

NEMA 4X Specifications

Special Cabinet Coolers

Dual Cabinet Cooler Systems

EXAIR's Dual Cabinet Cooler Systems are ideal for large electrical enclosures and high heat loads. Dual Cabinet Cooler Systems are available in NEMA 12, 4, and 4X models with cooling capacities of 4,000, 4,800 and 5,600 Btu/hr (857, 1007, 1209 and 1411 Kcal/hr). For more information, contact Compressed Air Australia.

Cold Air Distribution Kit: The kit includes a length of flexible vinyl tubing used to direct the cold air for circulation, or to hot spots. Tubing connectors and adhesive backed clips to hold the tubing in place are provided.

Filtration: A 5 micron automatic drain water and dirt filter, such as EXAIR Model 9001, is critical for the protection of electronics from water in the compressed air line.  If oil is present in the compressed air, a coalescing (oil removal) filter, such as EXAIR Model 9005 is recommended.

Humidity: For a continuous operating Cabinet Cooler, relative humidity inside the enclosure stabilizes at 45%. No moisture condenses inside the enclosure. (The enclosure must be sealed to prevent condensation.)

Inlet Air Temperature: Cabinet Cooler Systems provide a 50°F (28°C) temperature drop from supply air temperature when the inlet pressure is 80 PSIG (5.5 BAR). Elevated inlet temperature will produce a corresponding rise in cold air temperature and reduction in cooling capacity. Low air pressures will also reduce the cooling capacity.

Mounting: The Cabinet Cooler mounts to the enclosure through a drilled hole or electrical knockout. The NEMA 12 Cabinet Coolers may be mounted on the top or side of the panel. NEMA 4 and 4X Cabinet Coolers must be mounted on the top of the panel, or on the side of the panel using our Side Mount Kits.

Solenoid Valve and Thermostat:Cabinet Cooler Systems with thermostat control include a solenoid valve and thermostat that limit the flow of compressed air to only when cooling is needed. Solenoid valves are rated 110-120V/50Hz-60Hz, 200-240V/50Hz-60Hz or 24VDC. They are UL Listed, CSA Certified. The thermostat is factory set at 95°F (35°C)...It is rated 24V-240V, 50/60Hz and is UL Recognized, CSA Certified.

ETC™ Electronic Temperature Control

EXAIR’s digital ETC (Electronic Temperature Control) provides precise temperature control for your electrical enclosure. It can accurately maintain a constant temperature that is slightly under the maximum rating of the electronics, permitting just enough cooling for the electronics without going so cold as to waste compressed air. The LED readout of the ETC displays the internal temperature of the electrical enclosure (°F or °C) that is constantly being monitored by a quick response thermocouple. The control activates the solenoid valve (included) when the temperature setting is exceeded. The polycarbonate plastic enclosure of the ETC is suitable for NEMA 12, 4 and 4X environments. (Cabinet Cooler not included.)

Side Mount Kits

EXAIR's new Side Mount Kits make mounting on the side of an electrical enclosure possible when there is limited space on the top or side. (NEMA 4 and 4X Cabinet Coolers must be mounted vertically.) The Side Mount Kits maintain the NEMA rating of large and small NEMA Type 12, 4 and 4X enclosures. They mount in a standard electrical knockout (1-1/2 NPS). Side Mount Kits for NEMA 12 Cabinet Coolers have an aluminium construction. Those for NEMA 4 and 4X Cabinet Cooler Systems are Type 303 or Type 316 stainless steel.

The Side Mount Kits are suitable for use on large or small electrical enclosures with Cabinet Coolers that have cooling capacities up to 2800 Btu/hr.

NEMA 12 Models

Continuous Operation Systems include the NEMA 12 Cabinet Cooler(s) and cold air distribution kit.

Thermostat Control Systems include the NEMA 12 Cabinet Cooler(s), cold air distribution kit, solenoid valve and thermostat.

ETC-Electronic Temperature Control Systems include the NEMA 12 Cabinet Cooler(s), cold air distribution kit and Electronic Temperature Control.

NEMA 4 Models

Continuous Operation Systems include the NEMA 4 Cabinet Cooler(s) and cold air distribution kit.

Thermostat Control Systems include the NEMA 4 Cabinet Cooler(s), cold air distribution kit, NEMA 4/4X solenoid valve and thermostat.

ETC-Electronic Temperature Control Systems include the NEMA 4 Cabinet Cooler(s), cold air distribution kit and Electronic Temperature Control.

NEMA 4X Models

Continuous Operation Systems include the NEMA 4X Cabinet Cooler(s); and cold air distribution kit.

Thermostat Control Systems include the NEMA 4X Cabinet Cooler(s), cold air distribution kit, NEMA 4/4X solenoid valve and thermostat.

Accessories

Valves/Thermostats

Electronic Temperature Control

Installation and Maintenance Sheets

Small NEMA 12 Cabinet Cooler
Large NEMA 12 Cabinet Cooler
High Temperature NEMA 12 Cabinet Cooler

Small NEMA 4-4X Cabinet Cooler
Large NEMA 4-4X Cabinet Cooler
High Temperature NEMA 4-4X Cabinet Cooler

Non Hazardous Purge Small NEMA 12
Non Hazardous Purge Large NEMA 12
Non Hazardous Purge Small NEMA 4-4X
Non Hazardous Purge Large NEMA 4-4X

ETC (Electronic Temperature Control)
Site Mount Kit
Model 4908 Dual Cabinet Cooler Installation Kit
Model 4519 Capacitor