Explosion Proof
Explosion-Proof Cold Storage
Ensure secure and compliant cold storage for materials that emit flammable vapors with the DT820XP from Polar Leasing. This Class I, Division 1 & 2 explosion-proof walk-in cooler/freezer is designed specifically for hazardous materials across industrial sectors. Ideal for short-term projects, emergency overflow, or seasonal needs, the DT820XP combines safety, durability, and convenience in a fully pre-assembled, ready-to-operate rental solution.
- Class I Division 1 & 2 Compliance: Designed for environments with continuous (Division 1) or emergency-only (Division 2, up to 10 hours/year) presence of flammable vapors, ensuring safety in hazardous conditions. This ensures safe operation in chemical plants, oil refineries, and other high-risk areas.
- Electric-Powered Efficiency: No fumes, fuel, or diesel engine noise. Ideal for enclosed or sensitive worksites where air quality and sound levels matter.
- Pre-Assembled and Ready to Operate: Simply connect to a single-point 240V, 20A, 1PH electrical supply to power both condensing units, with an integrated 240V-to-120V transformer for simplified setup.
- Redundant Refrigeration: Equipped with two 1 HP condensing units, both required for full operation but allowing continued limited cooling if one unit is offline.
- Durable Construction: Seamless fiberglass construction ensures durability, corrosion resistance, and easy cleaning, with a compact footprint suitable for any relatively even surface.
- Flexible Temperature Control: Maintains temperatures from 0°F to 35°F (-18°C to 2°C), ideal for a wide range of perishable or sensitive materials.
About Our Explosion Proof Walk In
Our explosion proof walk in is engineered for industrial customers needing robust, explosion-proof cold storage for materials in hazardous environments.
When your operation handles volatile or hazardous materials, conventional refrigeration isn’t enough. This unit is purpose-built for challenging industrial environments where explosion-proof performance is non-negotiable. Whether you’re managing short-notice projects or require flexible storage solutions, this electric-powered unit delivers safety, reliability, and ease of use.
Additional Features
Instead of using polystyrene or polyurethane insulation that may have air pockets that allow heat to enter, Polar King walk-in cooler rentals use polyisocyanurate rigid board insulation covered by a seamless fiberglass layer for maximum energy efficiency. The continuous fiberglass provides for all-weather protection outside and an easy-to-clean, sanitary surface inside.
- Heavy duty non-skid floor
- Lockable door latch
- Self-closing hinges
- Hasp lock on exterior door
- Safety release handle
- Heated door jamb
- Magnetic gasket
- Door closer
- Sweep seal
- Low ambient controls
- Defrost timer
- Heated relief port
- Light switch/pilot light
- Rain cap exterior doors
- Remote thermometer
- Interior lighting
- Crowned roof
- Heated freezer door
Popular applications
Restaurants & emergency
Add additional cold storage during peak times or backup for failed equipment.
Pharmaceutical
Get temperature-validated dual-temperature refrigeration for sensitive products.
Food distribution
Skip the reefer truck hassle and provide your customers with stationary cold storage.
Videos
How a Walk-In Cooler Works
Commercial refrigerators are typically insulated cold storage spaces that maintain a temperature of 35-41°F. When the temperature inside of the unit rises above the cooler’s set point, refrigerant enters the compressor as a low-pressure, low-temperature gas from the exterior of the unit. As the refrigerant compresses, its temperature increases proportionately. The gas then passes to the exterior of the unit, radiating excess heat and reducing the refrigerant’s temperature. The refrigerant next passes through an expansion device that relieves its pressure and decreases its temperature, causing it to change state into a liquid form before crossing into the interior of the unit. The now-cooler refrigerant absorbs heat from the insulated space and begins the process again until the unit reaches its desired set point.
Frequently Asked Questions
What is an explosion proof refrigerator?
An explosion proof refrigerator is a classified refrigeration unit designed for hazardous locations where flammable gases or vapors could be present and conventional equipment would pose an ignition risk. The unit’s electrical components and wiring methods are built so they do not become an ignition source in these environments. “Explosion-proof” is often used as a general term, but what matters for compliance is the specific Class and Division (or Zone) rating established for your site. Your safety team or Authority Having Jurisdiction typically confirms the area classification that drives what equipment is required.
What do "Class" ratings mean for explosion-proof refrigeration?
Class ratings describe the type of hazard present in the environment. Class I locations involve flammable gases or vapors, Class II involves combustible dusts, and Class III involves ignitable fibers or flyings. Most explosion-proof refrigeration for industries like chemical plants, oil refineries, and pharmaceutical manufacturing falls under Class I, since the primary concern is flammable vapors in the surrounding air.
For more information, see this full guide to explosion-proof walk in refrigerators for more detail on Class ratings, Zones and more.
What's the difference between Division 1 and Division 2 hazardous environments?
Division ratings describe how likely a hazard is to be present, and that distinction determines your equipment requirements. Division 1 means flammable concentrations are expected under normal operating conditions, making it a higher-risk environment that requires more stringent equipment standards. Division 2 means hazards are not normally present but could appear under abnormal conditions such as a leak or system failure. Your site classification determines which division applies, and OSHA requires equipment to be approved for that classification and installed per applicable electrical requirements.
For more information, see this full guide to explosion-proof walk in refrigerators for more detail on Class ratings, Zones and more.
How do I know if I need an explosion proof cooler instead of a standard walk-in?
You typically need an explosion proof cooler when flammable vapors or gases may be present around the unit, meaning the surrounding area is classified as hazardous. If the area outside the unit is not classified, but you are storing flammable materials inside a refrigerator, a flammable-material storage refrigerator may be the better fit than a classified explosion-proof unit. The correct choice depends on your site classification and the Authority Having Jurisdiction’s interpretation for the project.
What safety features are included in a Polar Leasing explosion proof refrigerator rental?
The explosion-proof walk-in rental is designed for Class I, Division 1 and Division 2 environments and is built as an electric-powered unit with no fuel or diesel exhaust. It also includes redundant refrigeration with two condensing units, which can help reduce risk from a single equipment failure. For hazardous locations, the core safety requirement is that the unit’s electrical components and installation details match the site’s classified rating and applicable code requirements.
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