Refrigerant Filling Equipment Vacuum Evacuation and Precision Refrigerant Charging Machine

HongCe Refrigerant Filling Equipment is designed for refrigeration-system production lines where controlled vacuum evacuation, refrigerant weighing and refrigerant charging need to be completed with consistent process control.

The machine combines vacuum processing and quantitative refrigerant filling in one production-oriented system. With a dual charging-gun configuration, charging pressure of 1.6-3.5 MPa, charging accuracy of ±0.5 g within 100 g, and a single charging range of 10-500 g, it is designed to support stable and repeatable refrigerant charging operations.

The system also supports MES connectivity, production data storage for up to three years, RJ45/RS-485 communication interfaces, real-time equipment feedback and customized equipment identification, making it suitable for manufacturers looking to connect refrigerant charging with modern production management.

In refrigeration manufacturing, refrigerant charging is more than simply adding a predetermined quantity of refrigerant. A small difference in charge quantity can influence the operating condition of a refrigeration circuit. Residual air, moisture or insufficient evacuation can also affect the consistency of the finished system. For production teams, the real challenge is therefore to make the process repeatable, measurable and easy to manage.

HongCe developed this Refrigerant Charging Machine around that practical requirement. The equipment is designed to perform the key production steps of vacuum evacuation and quantitative refrigerant charging, while integrating weighing control, vacuum processing, pressure management and production-data functions into one system.

The result is a machine intended not only to charge refrigerant, but to help production teams establish a more consistent charging process from one unit to the next. For manufacturers that are increasing production volume or replacing manual charging operations, this configuration provides a practical path from individual operation toward a more controlled production-line process.

• Dual Charging-Gun Configuration: The dual charging-gun structure provides a practical configuration for production applications requiring controlled refrigerant charging operations. The effective moving stroke is ≥500 mm, allowing the charging assembly to accommodate the specified production arrangement.
• Controlled Refrigerant Charging: The charging pressure is specified at 1.6-3.5 MPa, while the single charging range is 10-500 g, with the possibility of expansion according to the actual project requirement. This provides a flexible basis for different refrigeration-system charging requirements.
• Quantitative Charging Accuracy: According to the supplied technical specification: Within 100 g: accuracy ±0.5 g; Above 100 g: accuracy ±0.5%. For production applications, this type of quantitative control helps reduce variation between individual products.
• Vacuum Evacuation Before Charging: The machine incorporates a vacuum process before refrigerant charging. The supplied specification gives a vacuum capability of 4 L/s and an equipment vacuum level of <2 Pa. This allows the charging process to be integrated with the preceding vacuum operation rather than relying on separate manual equipment.
• Production-Oriented Throughput: The specified UPH is 40 pcs/h. This makes the equipment suitable for production environments where charging operations need to be organized around a defined production rhythm.

• ISO 817:2024 -- Refrigerants -- Designation and Safety Classification: Establishes a system for refrigerant designation and safety classification, including classification based on toxicity and flammability and determination of refrigerant concentration limits.
• ISO 5149-1:2014 -- Refrigerating Systems and Heat Pumps: Addresses definitions, classification and selection criteria for refrigerating systems and heat pumps. It applies to stationary and mobile refrigeration systems and heat pumps and also covers conversion of systems to another refrigerant.
• ISO 5149-2:2014 -- Design, Construction, Testing, Marking and Documentation: Addresses the design, construction and installation of refrigeration systems and associated components and also specifies requirements related to testing, commissioning, marking and documentation.

• Vacuum Technology: Vacuum evacuation is integrated into the charging workflow so that the refrigeration system can be processed before refrigerant filling.
• Quantitative Refrigerant Charging: The charging quantity is controlled according to the configured target, with the supplied specification providing accuracy of ±0.5 g within 100 g and ±0.5% above 100 g.
• Pressure-Controlled Charging: The charging process is designed around a specified pressure range of 1.6-3.5 MPa.
• Automatic Control: The control architecture integrates charging, vacuum processing, process feedback and production-data functions.
• Production-System Connectivity: MES connection, RJ45 / RS-485 communication and data storage allow the charging process to become part of a broader production-management environment.
• Process Traceability: Three-year production data storage provides a longer-term reference for production management and process analysis.

• What is a refrigerant charging machine?
  A refrigerant charging machine is production equipment used to quantitatively fill refrigerant into a refrigeration system. Depending on its configuration, it can also integrate vacuum evacuation, weighing, pressure control, data management and production-line communication.

• What is the difference between refrigerant filling equipment and refrigerant charging equipment?
  In industrial applications, the two terms are often used interchangeably. Both generally describe equipment used to introduce a controlled quantity of refrigerant into a refrigeration circuit. For SEO and customer searches, both Refrigerant Filling Equipment and Refrigerant Charging Machine are useful descriptions.

• Can this machine evacuate the refrigeration system before charging?
  Yes. The supplied specification includes a vacuum capability of 4 L/s and an equipment vacuum of <2 Pa.

• What is the charging range?
  The specified single charging range is 10-500 g, and the range can be expanded according to the project requirements.

• What is the charging accuracy?
  The supplied specification states: Within 100 g: ±0.5 g; Above 100 g: ±0.5%.

• What is the charging pressure?
  The specified charging pressure is 1.6-3.5 MPa.

• How many products can the machine process per hour?
  The specified UPH is 40 pcs/h. Actual production output can depend on the product, loading method, charging quantity and production process.

• Can the equipment connect to MES?
  Yes. The supplied configuration supports MES automatic station connection and provides RJ45 / RS-485 interfaces.

Guangzhou HongCe Equipment Co., Ltd. has been engaged in the development and manufacture of testing equipment and production-line testing systems since 2003.

The company focuses on areas including vacuum technology, leak testing, automatic control, laboratory testing equipment and customized production-line solutions. HongCe states that its equipment is developed with reference to GB, IEC, EN, UL, VDE, BS, AS and ISO requirements, depending on the application.

Its factory operation covers customized testing and production-line systems, including vacuum and leak-testing solutions and gas-recovery systems. For customers purchasing refrigerant filling equipment, this engineering background matters because charging equipment is often only one part of a larger refrigeration production process.

HongCe can therefore approach the project from the perspective of equipment + process + integration, rather than treating the machine as an isolated product.