How to replace refrigerant r507?

The replacement of R507 refrigerant must follow specific steps and safety regulations

Preparatory work

1. Tools and materials: Prepare refrigerant recovery equipment to recover the remaining refrigerant and avoid environmental pollution; Vacuum pumps are used for vacuuming, removing moisture and non-condensable gases. A refrigerant tank containing an appropriate amount of R507 refrigerant; The pressure gauge monitors the system pressure; Disassemble and install pipes with wrenches, screwdrivers, etc. The refrigerant leak detector detects leaks.

2. Safety precautions: Wear protective glasses and gloves to prevent the refrigerant from coming into contact with the skin and eyes. Ensure good ventilation in the working area to prevent suffocation caused by the accumulation of refrigerant. Be familiar with the characteristics and safety matters of R507 refrigerant and strictly abide by the regulations.

3. System Evaluation: Inspect the operational status of the refrigeration system to determine if the refrigerant needs to be replaced. Search for and repair possible leakage points to ensure the system is sealed.

Recycle the refrigerant

1. Shut down the system: Stop the operation of the refrigeration system, turn off the power supply of the compressor, condenser, etc., and close the inlet and outlet valves of the refrigerant.

2. Connect the recycling equipment: Use appropriate connecting pipes to connect the recycling equipment to the high and low pressure interfaces, ensuring a firm connection without leakage.

3. Start the recovery equipment: Start it as per the operation instructions, observe the pressure gauge and liquid level gauge, and the equipment will automatically stop once the recovery is completed.

Vacuuming

1. Connect the vacuum pump: Connect the vacuum pump to the system interface and ensure a tight connection to prevent air from entering.

2. Start the vacuum pump: Turn on the power switch, observe the vacuum gauge, and maintain it at around -0.1MPa for 20 to 30 minutes.

3. Check the vacuum degree: Close the valve. If the vacuum degree drops, it indicates that there may be a leakage and it needs to be inspected and repaired.

Charge the refrigerant

1. Connect the refrigerant tank: Connect the refrigerant tank to the system interface and ensure it is firmly connected without any leakage.

2. Charging the refrigerant: Open the valve to allow the refrigerant to enter slowly. According to the rated charging volume, control the charging volume by observing the pressure gauge and the weight of the tank, and pay attention to the changes in pressure and temperature.

3. Check system operation: After the charging is completed, start the system and check parameters such as pressure, temperature, and cooling effect.

Leak detection and finishing work

1. Leak detection: Use a leak detector to inspect each connection point. Repair any leakage found promptly.

2. Organize tools and equipment: Close the valves, remove the connecting pipes, and properly store the tools and equipment

3. Record charging information: Record the charging quantity, time, etc., to facilitate future maintenance and management.

Replacing the refrigerant is highly specialized and requires relevant knowledge and skills. It is recommended that it be operated by professionals to ensure safety and the normal operation of the system.

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