FAQ

To determine the correct model for your application, it is first necessary to determine the total heat load to which the control panel is subjected. This total heat load is the combination of two factors - heat dissipated within the enclosure and heat transfer from outside into the enclosure. We're glad to help you calculate your heat load. You can contact an Application Engineer, or complete our easy online form, and we'll do the calculations for you. Click here for our Cabinet Cooler Sizing Guide.

The ETC is adjustable from 80°F to 120°F (approximately 27°C to 49°C).

No, the cold air produced by a Cabinet Cooler and introduced into an enclosure expands to atmospheric pressure and warms to enclosure temperature. Only if humidity from ambient air is allowed into the panel is there potential for condensation. Therefore it is imperative that all louvers and other openings are closed off.

On initial startup, the cooler will purge out the warm, moist air inside the panel. As the cool air generated from the Cabinet Cooler enters the panel it begins to pick up heat and the relative humidity drops. A continuously operating Cabinet Cooler will stabilize the relative humidity at approximately 45%. EXAIR also recommends using a 5 micron filter separator to remove any condensate from the airline.

Maybe. The ETC was designed specifically to control EXAIR Cabinet Coolers, and the temperature range is limited as shown in question #1 to a range that is appropriate for the application. The ETC could be used in conjunction with an EXAIR Vortex Tube provided that the temperature required for your application fell within the  80°F to 120°F (approximately 27°C to 49°C) range of the ETC. Please contact an Application Engineer to discuss your application requirements.

Yes, UL listed NEMA 12 models can be mounted in any orientation (horizontal, diagonal, etc…) but you can save some space by using our 90 degree mounting kit and position the Cabinet Cooler vertically. NEMA 4/4X models must be in the vertical orientation to maintain their UL listed NEMA integrity. The 90 degree mounting kits make side mount installation simple, clean and effective.

The environmental temperature limit of the ETC is 150°F (65°C).

The Model #9017 Thermostat includes a Model #4519 Capacitor. This .002 microfarad capacitor is wired across the leads of the thermoswitch to stop chattering. The chattering is caused by a slow change in temperature inside the enclosure. The capacitor desensitizes the thermoswitch to eliminate chattering.

EXAIR Cabinet Cooler Systems are available with cooling capacities from 275 Btu/hr to 5,600 Btu/hr. Multiple Systems or additional Cabinet Cooler units are occasionally specified for even higher heat load requirements. Contact an Application Engineer for more information.

NEMA 12 are stainless steel internally and aluminum externally. NEMA 4 are aluminum. NEMA 4X are 303 stainless steel and also stocked made from 316 stainless steel.

If your Cabinet Cooler^® System was purchased after January 2^nd, 2008 there will be a small round silver sticker on the body of the Cabinet Cooler, at the compressed air inlet, that will display the air consumption in SCFM at 100 PSIG.

Yes, a Cabinet Cooler^® System will operate at less than 100 PSIG but the cooling capacity will decrease depending on the inlet pressure.  It is recommended to operate the Cabinet Cooler^® Systems with 100 PSIG of compressed air pressure at the needed volume.

The Cold Air Distribution Kit allows the Cabinet Cooler^® System to distribute the air through the cabinet. This is needed because the Cabinet Cooler itself is self exhausting. This means all the air that is put into the cabinet by the unit is exhausted through the body of the unit. In order to ensure you are allowing the cold air to properly cool the cabinet and only warm air to be exhausted, you will want to utilize the Cold Air Distribution Kit to carry the cold air away from the exhaust port.

The "Temp Guns" read surface temperature of the material at which they are aimed, instead of air temperature.  In order to accurately calculate the internal heat load of the cabinet, we need to know the current external and internal air temperatures of the cabinet. EXAIR recommends a simple air temperature thermometer.

Yes, in order to do so you will need liquid at the desired set temperature, a continuity meter, and a small flat head screwdriver.  The process for adjusting the thermostat is covered in the product's Installation and Maintenance guide.

A NEMA 12 Cabinet Cooler^® System has built in sound attenuation and does not normally require additional muffling. If more attenuation is desired, the optional muffler for the Cabinet Cooler^® Systems is part number 4902.

The ETC has the following benefits:

1.) The set-point is easily adjustable with the use of push-buttons located on the front panel of the unit.
2.) The controller maintains the set point temperature within 1°F of the set point.
3.) The units can be changed from Fahrenheit to Celsius through push-button commands on the front panel of the unit.
4.) The ETC digital display indicates the actual temperature inside the cabinet.

The ETC can be set between 70°F - 130°F.

Yes, Cabinet Coolers are simply engineered Vortex Tubes for the specific purpose of cooling a cabinet. Vortex Tubes will perform the same as a Cabinet Cooler but there are distinct advantages to using the Cabinet Cooler for this application.

• Cabinet Coolers are available in models that are UL Listed to maintain the NEMA integrity of electrical panels. Vortex Tubes do not provide this level of protection.
• Cabinet Coolers have built in sound attenuation.
• Cabinet Coolers have a built in vent to allow warm panel air to escape from the cabinet.
• Cabinet Coolers are pre-set for maximum refrigeration and the setting cannot be changed. Vortex Tubes can be field adjusted, this leaves them susceptible to mis-adjustment and inefficient operation.