OEMs of Cranes, Mining and Construction Equipment


For an overview of DMC’s harsh-duty air conditioners, Click here.

If you have a specific application in mind, please complete our Project Data Form for Air Conditioners or Filtration. An engineer will then prepare a proposal with our recommended solution.

If you have questions about how hazardous/explosive areas are classified, Click here

For an overview of DMC's low-maintenance and no-maintenance filtration systems, Click here.

All DMC products retain their harsh-duty characteristics when modified for hazardous (“explosion-proof”) environments. Click here

If you have more general questions or comments, please use our Contact DMC Form.

Air conditioners constitute a small part of the cost of the equipment you make, yet they can cause expensive problems if they fail. DMC designs and builds air conditioners specifically to minimize problems and to assure that if they occur, users can repair them without waiting for special parts.

When the operation of your products — payloaders, drag lines, cranes and other heavy equipment — constitutes the core production or essential support activity of your customers, you can not allow dusty, hot (or cold), corrosive or other harsh conditions to hamper their functioning! If your customers can not rely on your machinery to sustain their business,they suffer great harm and you, as the manufacturer, may have expensive callbacks for warranty repairs and service.

To help assure your success even under severe conditions, DMC designs and builds durable industrial HVAC equipment specifically to protect operator cabins and controls installed in rough industrial, marine and military environments.

Modern safety rules often require moving the air conditioners before repairing them — thereby extending the downtime of your payloaders and cranes and making even the simplest repairs expensive and frustrating for production and maintenance managers. As a result, if a DMC unit avoids even one unscheduled repair during its lifetime, it will pay for itself several times overin money and reduced aggravation.

I. Engineered for dust and sand

DMC designs all its air conditioners and other HVAC equipment not to clog or lose efficiency in heavy dust.

All our condensers and evaporators have widely-spaced fins so that sand and dust will pass through them, and they have electrostatically-applied baked-on epoxy coatings to help prevent the porosity that can help particles stick to the fins.

We use only sealed compressors and extra-strong, totally-enclosed motors with 300-series stainless-steel shafts.

Our backwardly inclined blower wheels tolerate heavy dirt loads, and we use an especially strong polyamide-6 plastic reinforced with 30% glass fiber to make them stronger, quieter, more energy-efficient, and more corrosion-resistant than almost any other type of wheel.

II. Designed for extreme ambient temperatures and altitudes

DMC rates the cooling capacities of our air conditioners at ambient temperatures of 131°F (55°C), not just at the normal 95°F (35°C), to assure full capacity in hot locations.

Furthermore, our patented design assures that they will maintain this full cooling capacity down to low-ambient temperatures without adjustment and without delicate fan-speed controls and sensors.

Note: if your buildings or vehicles require heat, DMC offers installs integral, corrosion-resistant incoloy tubular heating elements.

III. Resist corrosion:

DMC takes many steps to protect its equipment to assure that your host equipment will receive proper HVAC protection. We make all cabinets exclusively of the most corrosion-tolerant stainless steel — 316L, not the less-resistant 304. We protect all the condensers and evaporators with the highest-quality, lowest-porosity (particularly effective in marine environments) epoxy applied electrostatically in a bath and then baked to cure.

DMC seals key electrical components inside NEMA 4X/IP66 boxes to keep out all corrosive gases, moisture, and dusts.

For potentially radioactive environments such as nuclear power plants, DMC can modify the designs to utilize only materials that do not absorb radioactivity.

IV. Reliable mechanical, not electronic, controls

The same electrical problems that can damage your products' electronics could damage the electronic controls of most HVAC equipment. DMC aims to eliminate that risk by using only mechanical controls. Using only mechanical controls also helps eliminate the need for specially-trained technicians to service our equipment because they can be repaired easily, and we specifically choose components that can be purchased locally in most places.

V. Durability:

Because DMC makes its air conditioners for extreme applications, we use over-sized and heavy-duty components that last longer than those of ordinary commercial and residential air conditioners.

Since DMC designs its units specifically for durability and operations under extreme conditions, they retain their energy efficiency under such conditions. DMC air conditioners are the “greenest” under harsh conditions.

Reminder about “Explosion-Proofing”

Even when DMC adapts its units for flammable and explosive environments, they retain all their other harsh-duty advantages and durability. Therefore, they afford a far better return on investment than residential or commercial units modified for hazardous locations. In addition, DMC makes a special priority the development and production of robust Division/Zone 1 air conditioners, with and without heat.

If you have any questions or comments, please let us know. If you have a particular application in mind, click here. We look forward to having the opportunity to team up with you, either to work with our standard products or to develop ones that will more specifically suit your needs.

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