Nunchi Climate R744 (CO2)

The Nunchi Climate R744 A/C Service Station is a professional service solution specifically designed for automotive air-conditioning and thermal-management systems operating with R744 (CO₂) refrigerant.

Unlike conventional R134a and R1234yf systems, R744 systems operate at substantially higher pressures and therefore require dedicated service equipment, components and safety functions. The Nunchi Climate R744 is designed around these special requirements, making it particularly suitable for modern electric vehicles, hybrid vehicles and vehicles equipped with CO₂ heat-pump systems.

Specifically Designed for R744 / CO₂

R744 is a natural refrigerant with GWP 1 and zero ozone-depletion potential. Its thermodynamic characteristics make it increasingly relevant for advanced automotive thermal-management applications, but the high operating pressures and controlled handling requirements mean that a conventional A/C service machine cannot simply be used in its place.

The Nunchi Climate R744 is therefore designed as a dedicated CO₂ service station, with special attention to accurate refrigerant charging, controlled CO₂ discharge, high-pressure operation and workshop safety.

Main Functions

• Controlled R744 system discharge – safely removes CO₂ refrigerant from the vehicle system.
• Oil separation and measurement – manages oil removed during the service process.
• Vacuum – evacuates the A/C or heat-pump circuit before charging.
• Vacuum leak test – checks the system’s ability to maintain vacuum before proceeding.
• Precision R744 charging – accurate refrigerant charging with a target accuracy of ±10 g.
• Automatic oil injection – precise addition of the required compressor oil.
• Fully automatic service cycle – guides the technician through the required service procedure.
• Controlled CO₂ release – refrigerant discharge is managed in a controlled manner for improved operator and system safety.
• Automatic CO₂ concentration monitoring – monitors the surrounding workshop atmosphere and can interrupt charging if the CO₂ concentration approaches an unsafe level.

R744-Specific Safety

Working with CO₂ requires a different approach from conventional mobile A/C refrigerants. The Nunchi Climate R744 incorporates dedicated safety-oriented functionality for this environment.

Atmospheric CO₂ monitoring provides an additional level of protection when refrigerant is discharged or handled. Controlled refrigerant release helps prevent uncontrolled venting, while dedicated high-pressure components are used for the demands of R744 systems. The reference R744 service technology also uses automatic leak-management procedures and dedicated service hoses for CO₂ applications.

Technical Specifications & Features

These characteristics are based on the dedicated R744 service architecture used by the reference CO₂ service equipment.

Designed for EV & Heat Pump Applications

R744 is particularly relevant to the new generation of vehicle thermal-management systems. The Nunchi Climate R744 is intended to support workshops servicing increasingly sophisticated A/C and heat-pump circuits found in battery-electric, hybrid and conventional vehicles.

Automatic procedures simplify servicing of complex systems while helping the technician maintain the accuracy required for relatively small refrigerant and oil quantities. The reference R744 platform is specifically listed as compatible with hybrid and electric vehicles.

Optional R744 Leak Detection

For additional diagnostic capability, the machine can be complemented by a Forming Gas leak-detection solution. For R744 applications, dedicated high-pressure connections and pressure regulation are required; reference equipment for this application supports an output pressure of up to 100 bar.

Why Choose Nunchi Climate R744?

Dedicated to R744 • High-pressure CO₂ technology • Fully automatic operation • ±10 g refrigerant charging accuracy • Automatic oil injection • Controlled CO₂ discharge • Ambient CO₂ monitoring • EV & Heat Pump compatible • Multi-language operation • Professional workshop solution

The Nunchi Climate R744 – Part No. 1300 provides workshops with a dedicated solution for servicing the next generation of CO₂ automotive air-conditioning and heat-pump systems, combining precision, automation and R744-specific safety functionality in one professional service station.