This Greece-based HVAC and refrigeration equipment manufacturer specializes in producing commercial air conditioning units, heat pumps, and small-scale industrial cooling systems. Facing growing demand for high-quality, energy-efficient units, the client identified critical bottlenecks in their production process: inconsistent vacuuming quality, slow refrigerant charging cycles, and manual handling errors that led to high rejection rates and production delays. Their previous standalone evacuation and charging equipment struggled to maintain consistent vacuum levels and precise refrigerant fills, especially when working with multiple refrigerants like R134a, R407C, and R410A. To meet rising order volumes and improve product reliability, the client needed an integrated, automated solution that could streamline both vacuum pre-evacuation and refrigerant charging steps.

The client partnered with Chunmu Refrigeration to deploy a complete turnkey solution: the CM8600 Refrigerant Charging Machine paired with the CM-VP Automatic Vacuum Pre-Evacuation Unit, tailored to their operational requirements:

• Supported Refrigerants: R134a, R407C, R410A
• Power Supply: 380V / 50Hz (matched to local grid standards)
• CM-VP Vacuum Unit: Achieves ultimate vacuum down to 0.5 Pa with dual-port evacuation, ensuring thorough moisture and air removal
• CM8600 Charging Machine: High-speed charging up to 200g/s, with precision as tight as ±0.3% for large fills and ±1g for small charges
• Integrated Workflow: Automated sequence combining evacuation, leak detection, and refrigerant charging in one continuous process

The synchronized operation of both units eliminated manual handoffs between stages, significantly reducing cycle times and minimizing human error.

Poor vacuuming was a major source of product failures in the client’s units, leading to corrosion, reduced cooling efficiency, and premature breakdowns. The CM-VP’s high-performance vacuum pump and real-time monitoring ensure consistent deep evacuation, removing moisture and non-condensable gases effectively. This has directly improved the long-term reliability of the client’s cooling systems and reduced warranty claims.

With separate evacuation and charging steps, the client’s production line suffered from long wait times and low throughput. The integrated CM-VP and CM8600 solution automates the entire process, cutting cycle times significantly. The high-speed charging capability of the CM8600 keeps pace with the rapid evacuation provided by the CM-VP, allowing the client to scale production without expanding their floor space.

Supporting three different refrigerants across multiple product lines required frequent equipment changes and recalibrations, which was both time-consuming and error-prone. The CM8600’s flexible refrigerant compatibility and pre-set channel functions allow the client to switch between R134a, R407C, and R410A recipes in seconds. Combined with its high-precision charging, this ensures consistent fill levels across all product variants, reducing defects and improving overall quality control.

After installation and commissioning, the CM-VP and CM8600 integrated system has become the core of the client’s production line. The equipment’s stable performance, user-friendly operation, and significant efficiency gains have far exceeded expectations.

The client’s production manager commented: “The combination of Chunmu’s CM-VP vacuum unit and CM8600 charging machine has completely transformed our production process. We’ve seen a marked improvement in both line speed and product quality, with far fewer rejects and complaints from customers. The machines run reliably 24/7, and the team finds them easy to operate and maintain. We are extremely satisfied with the solution and the support from Chunmu, and we’re already considering expanding with additional units for our new production line.”

This deployment underscores Chunmu’s ability to deliver tailored, integrated solutions that address the full spectrum of manufacturing challenges in the HVAC and refrigeration industry.