As automotive HVAC systems evolve to meet global efficiency and sustainability standards, manufacturers face growing pressure to handle medium-pressure refrigerants like R407c with uncompromising safety, speed, and accuracy. For a Suzhou-based automotive air conditioning manufacturer, this challenge led to a partnership with ChunMu — and the deployment of our CM8600 (ExS) Explosion-Proof Refrigerant Charging Machine.

The client specializes in producing HVAC systems for passenger vehicles, where R407c is a critical refrigerant for balancing cooling performance and environmental compliance. Their prior charging setup struggled with three core pain points:

• Safety Risks: R407c’s flammability required rigorous explosion protection, which their legacy equipment lacked.
• Inconsistent Precision: Variations in refrigerant dosing led to 12% of units failing performance tests, increasing rework costs.
• Slow Throughput: Charging speeds of 150g/s couldn’t keep up with their high-volume production targets, creating bottlenecks.

With automotive OEMs demanding zero defects and faster delivery, the client needed a solution that could address all three issues in one integrated system.

The CM8600 (ExS) was engineered to meet the unique demands of automotive refrigerant handling, with features that directly solved the client’s challenges:

• ATEX & CE Certified Explosion Protection: Isolated electrical controls and an explosion-proof vacuum pump eliminated fire and explosion risks when working with R407c, ensuring full compliance with global automotive safety standards.
• Lab-Grade Dosing Accuracy: ±0.1g precision for small volumes and ±0.3% accuracy for larger doses reduced A/C system defects by 90%, cutting rework time and costs.
• High-Speed Charging: Up to 240g/s charging speed boosted production throughput by 35%, helping the client meet OEM delivery deadlines without compromising quality.
• Future-Proof Flexibility: The machine’s compatibility with R407c, R600a, R290, and other flammable refrigerants ensures the client can adapt to evolving industry regulations.

Since deploying the CM8600 (ExS), the Suzhou manufacturer has achieved measurable improvements:

• Faster Production: Reduced per-unit charging time from 8 minutes to 5 minutes, enabling 20% more units to be processed daily.
• Zero Safety Incidents: The explosion-proof design eliminated refrigerant-related safety risks, protecting operators and minimizing downtime.
• Improved Quality: Consistent R407c dosing cut field warranty claims by 15%, strengthening their reputation with automotive OEM partners.

As the automotive industry shifts toward low-GWP refrigerants and stricter safety standards, the CM8600 (ExS) positions manufacturers to stay ahead of the curve — delivering performance that scales with their growth.

Optimize your works with Chunmu Refrigeration's complete refrigerant services: recovery, purification, and charging. Contact us today for  technical support!

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