An ATEX Zone 2 Explosion Proof System is a specially designed electrical or refrigeration system built to operate safely in environments where flammable gases, vapors, or fumes may occasionally exist.

ATEX stands for:

ATmosphères EXplosibles
A European safety certification and directive for equipment used in hazardous explosive environments.

What is Zone 2?

In hazardous area classification:

Zone 2 areas are commonly found in:

• Chemical factories
• Oil & gas facilities
• Paint spray booths
• Fuel storage areas
• Industrial cold rooms
• Pharmaceutical plants
• Food processing plants using alcohol or solvents

What is an Explosion Proof System?

An explosion proof system is engineered to:

• Prevent sparks or heat from igniting flammable gases
• Contain any internal explosion safely
• Reduce ignition risk from motors, switches, wiring, and controls
• Maintain safe operation in hazardous industrial environments

Typical explosion-proof components include:

• Explosion-proof compressors
• ATEX-certified electrical panels
• Flameproof motors
• Intrinsically safe sensors
• Anti-spark lighting systems
• Hazardous-area cabling and switches

ATEX Zone 2 Refrigeration System

For industrial refrigeration and cold room applications, an ATEX Zone 2 system may include:

• ATEX condensing units
• Explosion-proof evaporators
• Hazardous-area control panels
• Spark-free fan motors
• Gas detection systems
• Emergency shutdown systems

These systems are commonly used for:

• Chemical cold storage
• Solvent storage rooms
• Petrochemical processing
• Pharmaceutical refrigeration
• Alcohol beverage production
• Battery and lithium storage facilities

Main Benefits

Safety Compliance

Helps industries comply with European ATEX safety regulations.

Reduced Explosion Risk

Minimizes ignition sources in hazardous environments.

Reliable Industrial Operation

Designed for continuous heavy-duty industrial use.

Insurance & Regulatory Approval

Required by many industrial authorities and insurance providers.

Common Certifications

ATEX systems may carry certifications such as:

• ATEX Directive 2014/34/EU
• IECEx
• CE Marking
• Ex d / Ex e / Ex n protection types

Example marking:

Ex nA IIB T3 Gc

This indicates:

• Non-sparking protection
• Gas group compatibility
• Temperature safety class
• Zone 2 suitability

Industrial Blast Freezer Room (also called a Blast Freezing Cold Room or Rapid Freezing Chamber).

Designed for high-speed freezing of food products using powerful evaporator fans and ultra-low temperature refrigeration.

 

Main Advantages of This Type of Blast Freezer

Industrial freezers, heavy-duty freezing systems designed for commercial and industrial use to store products at very low temperatures for long periods while maintaining product quality, safety, and freshness.

They are commonly used in industries such as:

• Food & beverage manufacturing
• Hypermarkets & supermarkets
• Cold chain logistics
• Seafood & meat processing
• Pharmaceuticals
• Hotels & restaurants
• Convenience stores
• Warehouses

What is an R744 CO₂ Transcritical System?

R744 CO₂ Transcritical System is an advanced industrial and commercial refrigeration system that uses carbon dioxide (CO₂) as the refrigerant.

“R744” is the official refrigerant code for CO₂ refrigerant.

This system is widely used in:

• Supermarkets
• Hypermarkets
• Cold rooms
• Blast freezers
• Food processing factories
• Cold chain logistics
• Industrial refrigeration plants

It is considered one of the most environmentally friendly refrigeration technologies available today.

How the CO₂ Transcritical System Works

Unlike traditional refrigerants, the CO₂ transcritical system operates at:

• Very high pressure
• High efficiency cooling cycles
• Ultra-low temperature applications

The system moves through:

1. Compression
2. Gas cooling
3. Expansion
4. Evaporation

When ambient temperatures become high, the system operates in a “transcritical” mode where CO₂ behaves differently from conventional refrigerants.