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R407C refrigerant (5.6 kg cylinder) Bestcool
R-407C is a zeotropic blend consisting of R-125, R-32, and R-134a in proportions of 25/23/52%. This refrigerant serves as a long-term alternative to R-22, providing similar volumetric cooling capacity and coefficient of performance for air conditioning. However, at low evaporation temperatures, its performance may be less effective compared to R-22. Note that when refrigerant leaks occur, the composition of the blend shifts towards components with higher boiling points. It is important to fill R-407C only from the liquid phase.
Technical specifications and compatibility
| Parameter | Value |
|---|---|
| Composition | R-125 (25%), R-32 (23%), R-134a (52%) |
| Temperature glide | approximately 7 K |
| Toxicity | Comparable to or lower than R-22 |
| Oil compatibility | Not miscible with mineral oil, but well soluble with ester oils |
How to choose the right product
To select the correct R-407C refrigerant, consider the following points:
- Ensure you are using R-407C to replace R-22 in your air conditioning systems.
- Check that the gas cylinder was filled from the liquid phase to avoid composition issues.
- Verify compatibility with the oils used in your system.
Possible causes of failure and prevention methods
The main causes of leaks and failures with R-407C include:
- Aging and wear of seals and connections, which can lead to leaks.
- Improper installation or maintenance of the system, which can cause damage.
For prevention, it is recommended to regularly check the system for leaks and perform maintenance to extend the life of the refrigerant.
Difficulty of replacement
Replacing R-407C refrigerant requires certain skills and knowledge. It is recommended to follow this step-by-step process:
- Disconnect the system from the power source.
- Drain any remaining refrigerant, if necessary, in accordance with disposal regulations.
- Fill the system with new R-407C refrigerant from the liquid phase.
- Check the system for leaks after filling.
The difficulty level of the replacement can be rated as medium, and if you lack experience, it is advisable to consult professionals.