Cabinet Cooler® Systems

What is an EXAIR Cabinet Cooler System?

Applications

Advantages

Special Cabinet Coolers

Cabinet Coolers Keep Working at Full Capacity After Seven Years of Near Constant Operation

Cooling in a Hostile Environment

Cabinet Cooler® Systems

How The Cabinet Cooler Works

Watch the Video

Selecting the Right Model – Know Your System Options

ETC Electronic Temperature Control

Mounting

Special Cabinet Coolers

EXAIR manufactures special NEMA 12 (IP54), 4 (IP66) and 4X (IP66) Cabinet Coolers suited to specific environmental requirements:

Heat Can Stop Your Machines – Compare the Alternatives

Application Spotlights

The Problem

The Problem

NEMA 12 Cabinet Coolers

NEMA 4 Cabinet Coolers

NEMA Rating

Environmental Considerations

Continuous Operation or Thermostat Control

Specifications

Dimensions

Models

Stop electronic control downtime due to heat, dirt and moisture. Cabinet Coolers maintain NEMA 12 (IP54), NEMA 4 and NEMA 4X (IP66) integrity and are UL Listed and CE compliant.

A Model 4830 NEMA 4 Cabinet Cooler cools a panel with -7°C (20°F) air while keeping the inside dry.

A low cost, reliable way to cool and purge electronic control panels. EXAIR Cabinet Coolers incorporate a vortex tube to produce cold air from compressed air – with no moving parts. The compact Cabinet Cooler can be installed in minutes through a standard electrical knockout. NEMA 12, 4 and 4X (IP54 and IP66) Cabinet Coolers that match the NEMA rating of the enclosure are available in many cooling capacities for large and small control panels.

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.

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.

Each different NEMA rated Cabinet Cooler system is available with a thermostat control or as a continuous operation system. These systems include a water-dirt filter separator to prevent water condensate and dirt from entering your enclosure and a cold air distribution kit used to direct the air for circulation or on to hot spots. EXAIR also manufactures Cabinet Cooler systems for difficult environments. We have provided additional information on our Cabinet Cooler systems suitable for high temperature environments, Non-Hazardous purge environments and Type 316SS material coolers for highly corrosive environments.

The first step to solving your overheating problem is to identify the NEMA integrity your enclosure will require. Below is an explanation to help you determine which NEMA integrity Cabinet Cooler system we should ship to you.

NEMA 12 (IP54) Cabinet Coolers (dust-tight, oil-tight, indoor service) 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 or 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.

Continuous operation Cabinet Cooler systems are recommended when constant cooling and constant positive purge are desirable.

The thermostat control systems are the most efficient way to operate a Cabinet Cooler. They save air by activating the cooler only when internal temperatures approach critical levels and will normally hold ±1°C (±2°F) inside the cabinet. Thermostat controlled cooler systems are the best option when experiencing fluctuating heat loads caused by environment or seasonal changes. The standard thermostat control systems include an adjustable thermostat factory set at 35°C (95°F).

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.)

ETC controls are available within Cabinet Cooler Systems or separate for retrofitting on existing coolers. All ETC enclosures are NEMA 4X (IP66), UL508 and UL94-5V. ETC’s are RoHS and CE compliant.

The Cabinet Cooler mounts to the enclosure through a drilled hole or electrical knockout. The NEMA 12 (IP54) Cabinet Coolers may be mounted on the top or side of the panel. NEMA 4 and 4X (IP66) Cabinet Coolers must be mounted on the top of the panel or on the side of the panel using one of our Side Mount Kits.

High Temperature Cabinet Coolers for ambient temperatures of 52°C to 93°C (125° to 200°F) are available. Internal components can withstand high temperatures (like those near furnaces, ovens, etc.).

Non-Hazardous Purge Cabinet Cooler Systems are ideal for dirty areas where contaminants might normally pass through small holes or conduits. Under normal conditions, the NHP Cabinet Cooler Systems provide a slight positive pressure in the enclosure by passing 1 SCFM (28 SLPM) of air through the cooler, when the solenoid valve is in the closed position. When the thermostat detects high temperature, it energises the solenoid valve to pass full line pressure and volume of compressed air to the Cabinet Cooler, giving it full cooling capability.

Type 316 Stainless Steel NEMA 4X Cabinet Coolers are suitable for food service, pharmaceutical, harsh and corrosive environments, and other applications where 316SS is preferred. Capacities from 275 to 5,600 Btu/hr. (69 to 1,411 Kcal/hr.) are available.

Hazardous Location Cabinet Coolers for use with classified enclosure purge and pressurisation systems are UL classified and approved for use in Class 1 Div 1, Groups A, B, C and D – Class II Div 1 Groups E, F and G – and Class III environments. EXAIR’s HazLoc Cabinet Cooler Systems have been tested by UL and meet the stringent UL requirements for these areas. Capacities from 1,000 to 5,600 Btu/hr. (252 to 1,411 Kcal/hr.) are available.

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ATEX Cabinet Cooler Systems are for use with classified enclosure purge and pressurisation systems. They have been tested by UL and meet the stringent ATEX requirements for Zones 2 and 22. Systems are available in 8 cooling capacities from 1,000 to 5,600 Btu/hr (252 to 1,411Kcal/hr).

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Programmable controllers
Line control cabinets
Motor control centres
Relay panels
NC/CNC systems
Modular control centres
CCTV cameras
Computer cabinets
Laser housings
Electronic scales
Food service equipment

Low Cost
Compact
Cooling capacities to 5,600 Btu/hr. (1,411 Kcal/hr.)
Quiet
Install in minutes
Maintain NEMA 12, 4 and 4X integrity (IP54 and IP66)
Stabilise 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

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

Online Sizing Guide
PDF Sizing Guide

Cabinet Coolers are compact like this Model 4608 NEMA 4 measuring only 127mm (5”) high

Dual Cabinet Cooler Systems combat higher heat loads

Small 316SS Cabinet Cooler with ETC Electronic Temperature Control resists heat and corrosion

NEMA 12 Cabinet Cooler Systems remove heat and prevent electronics from failure

With a source of clean and dry compressed air, the life span of a Cabinet Cooler can easily be in the range of 20 years or more.

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 to fail, there is a panic to get the machinery up and running again.

Cooling the electrical cabinet can eliminate these problems, but how will you do it? There are several cooling options out there and it’s important to know the facts.

A dangerous shock hazard exists when the panel door is opened to let a fan blow hot, dirty shop air at the electronics.

Heat Exchangers and Pipes

These have serious limitations. On hot summer days when the temperatures of the room and the inside of the enclosure are about equal, there’s not enough difference for effective heat exchange.

They fail when dust and dirt clog the filter
The cooling capacity is limited due to ambient conditions

Refrigerant Panel Air Conditioners

These coolers are expensive and are prone to failure when dust and dirt clog the filter. 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.

Vibration from machinery causes refrigerant leaks and component failures
It takes almost a day to install

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 -7°C (20°F) air. They mount in minutes through an ordinary electrical knockout and have no moving parts to wear out. The compressed air filtration that is provided keeps water, oil and other contaminants out of the enclosure.

There is no room air filter to clog
An accurate electrical thermostat control minimises compressed air use
All Cabinet Coolers are UL Listed to US and Canadian safety standards
They are the only compressed air powered coolers that are CE compliant

A manufacturer of automotive radiators had a problem relating to an overheated motor drive which caused one of their two production lines to come to a stop. They used a refrigerant based air conditioner set on the panel, ...

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A traditional refrigerant based air conditioner was installed on wastewater clarifier controls but could not withstand the harsh chemical environment of the wastewater industry. Controls on a wastewater clarifier process ...

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Filtration: EXAIR Cabinet Cooler Systems include a 5-micron automatic drain water and dirt filter. This filter 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.

Inlet Air Temperature: Cabinet Cooler Systems provide a 28°C (50°F) 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.

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

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.

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 cool when needed. Solenoid valves are UL Listed, CSA Certified.
The thermostat is factory set at 35°C (95°F). It will normally hold ±1°C (2°F) inside the cabinet. It is rated 24VAC-240VAC, 50/60Hz, 24VDC and is UL Recognised, CSA Certified.

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 vertically on the top of the panel, or vertically on the side of the panel using our Side Mount Kits.

Online Sizing Guide PDF Sizing Guide

NEMA 12 (IP54) Cabinet Cooler systems are dust and oil tight. They are ideal for general industrial environments where no liquids or corrosives are present.

Thermostat control systems (Models 4304-4380) are the most efficient cabinet cooler system because it will turn itself on and off as needed to cool your enclosure. Includes cooler, solenoid valve, thermostat, filter separator and cold air distribution kit. Models are available in 120VAC, 240VAC and 24VDC.

Continuous operation systems (Models 4204-4280) include the cooler, a filter separator and a cold air distribution kit.

ETC Thermostat control systems provide on the fly temperature adjustment and displays internal temperature in real time.

High Temperature Cabinet Cooler systems should be used when ambient temperatures reach 52°C – 93°C (125°F – 200°F).

Non-Hazardous Purge (NHP) models provide a continuous positive purge within the enclosure to prevent contaminants from entering. They are suited for extremely dirty and dusty environments.

Dual Cabinet Cooler systems (##50 – ##80) provide for additional cooling.

NEMA 12 (IP54) Models

4004

4008

4204

4208

4304

4308

NEMA 12 (IP54) Models
4015
4025
4030
4040
4215
4225
4230
4240
4315
4325
4330
4340

NEMA 12 (IP54) Cabinet Coolers – Dust and Oil Resistant, Indoor Service
Cooling Capacity @ 100 PSIG / 6.9 BAR		Sound Level dBA	Cabinet Cooler Only Model	Continuous Operation System Model	120VAC Thermostat Control Model	ETC120V Thermostat Control Model	240VAC Thermostat Control Model	ETC240V Thermostat Control Model	24VDC Thermostat Control Model
Btu/hr	Kcal/hr	Sound Level dBA	Cabinet Cooler Only Model	Continuous Operation System Model	120VAC Thermostat Control Model	ETC120V Thermostat Control Model	240VAC Thermostat Control Model	ETC240V Thermostat Control Model	24VDC Thermostat Control Model
275	69	59*	BP4004	BP4204	BP4304-120	BP4304-ETC120	BP4304-240	BP4304-ETC240	BP4304-24VDC
550	139	67*	BP4008	BP4208	BP4308-120	BP4308-ETC120	BP4308-240	BP4308-ETC240	BP4308-24VDC
1,000	252	73*	BP4015	BP4215	BP4315-120	BP4315-ETC120	BP4315-240	BP4315-ETC240	BP4315-24VDC
1,700	428	74*	BP4025	BP4225	BP4325-120	BP4325-ETC120	BP4325-240	BP4325-ETC240	BP4325-24VDC
2,000	504	74*	BP4030	BP4230	BP4330-120	BP4330-ETC120	BP4330-240	BP4330-ETC240	BP4330-24VDC
2,800	706	78*	BP4040	BP4240	BP4340-120	BP4340-ETC120	BP4340-240	BP4340-ETC240	BP4340-24VDC
3,400	857	75*	N/A	BP4250	BP4350-120	BP4350-ETC120	BP4350-240	BP4350-ETC240	BP4350-24VDC
4,000	1,007	77*	N/A	BP4260	BP4360-120	BP4360-ETC120	BP4360-240	BP4360-ETC240	BP4360-24VDC
4,800	1,209	77*	N/A	BP4270	BP4370-120	BP4370-ETC120	BP4370-240	BP4370-ETC240	BP4370-24VDC
5,600	1,411	79*	N/A	BP4280	BP4380-120	BP4380-ETC120	BP4380-240	BP4380-ETC240	BP4380-24VDC

*With optional cold muffler installed

High Temperature & Non-Hazardous Purge (NHP) NEMA 12 (IP54) Cabinet Coolers
Cooling Capacity @ 100 PSIG / 6.9 BAR		Sound Level dBA	High Temp Cabinet Cooler Only Model	High Temp Continuous Operation System Model	High Temp 120VAC Thermostat Control Model	High Temp 240VAC Thermostat Control Model	High Temp 24VDC Thermostat Control Model	Non-Hazardous Purge 120VAC Thermostat Control Model	Non-Hazardous Purge 240VAC Thermostat Control Model
Btu/hr	Kcal/hr	Sound Level dBA	High Temp Cabinet Cooler Only Model	High Temp Continuous Operation System Model	High Temp 120VAC Thermostat Control Model	High Temp 240VAC Thermostat Control Model	High Temp 24VDC Thermostat Control Model	Non-Hazardous Purge 120VAC Thermostat Control Model	Non-Hazardous Purge 240VAC Thermostat Control Model
275	69	59*	N/A	N/A	N/A	N/A	N/A	BPNHP4304-120	BPNHP4304-240
550	139	67*	N/A	N/A	N/A	N/A	N/A	BPNHP4308-120	BPNHP4308-240
1,000	252	73*	BPHT4015	BPHT4215	BPHT4315-120	BPHT4315-240	BPHT4315-24VDC	BPNHP4315-120	BPNHP4315-240
1,700	428	74*	BPHT4025	BPHT4225	BPHT4325-120	BPHT4325-240	BPHT4325-24VDC	BPNHP4325-120	BPNHP4325-240
2,000	504	74*	BPHT4030	BPHT4230	BPHT4330-120	BPHT4330-240	BPHT4330-24VDC	BPNHP4330-120	BPNHP4330-240
2,800	706	78*	BPHT4040	BPHT4240	BPHT4340-120	BPHT4340-240	BPHT4340-24VDC	BPNHP4340-120	BPNHP4340-240
3,400	857	75*	N/A	BPHT4250	BPHT4350-120	BPHT4350-240	BPHT4350-24VDC	BPNHP4350-120	BPNHP4350-240
4,000	1,007	77*	N/A	BPHT4260	BPHT4360-120	BPHT4360-240	BPHT4360-24VDC	BPNHP4360-120	BPNHP4360-240
4,800	1,209	77*	N/A	BPHT4270	BPHT4370-120	BPHT4370-240	BPHT4370-24VDC	BPNHP4370-120	BPNHP4370-240
5,600	1,411	79*	N/A	BPHT4280	BPHT4380-120	BPHT4380-240	BPHT4380-24VDC	BPNHP4380-120	BPNHP4380-240

*With optional cold muffler installed

Side Mount Kits for NEMA 12 Cabinet Coolers

Description

Side Mount Kit for NEMA 12 Cabinet Coolers up to 550 Btu/hr. (139 Kcal/hr.)

Side Mount Kit for NEMA 12 Cabinet Coolers 650 Btu/hr. (165 Kcal/hr.) and higher