What are the daily maintenance tips for refrigerant antifreeze? How can we tell?

Regularly measure the freezing point of the medium.Indicators such as pH value and conductivity ensure stable performance; replenish the evaporated medium promptly (using products of the same model); clean the system pipelines regularly to prevent scaling and blockage by impurities; replace the medium immediately if it changes color, develops an odd smell, or exhibits abnormal performance.

Commonly used tools for freezing point testing include refractometers, freezing point testers, and densitometers.

Refractometer: Apply the liquid to the prism and read the scale value (regular calibration is required to prevent errors);

Freezing point tester: Cool the sample until crystallization occurs, and automatically record the phase transition temperature (accuracy±0.5℃）；

Density meter: Derive concentration from liquid density (requires conversion using a composition table).
Operation tips: Stir the sample thoroughly before sampling to prevent sediment from affecting the results; for winter testing, preheat the sample toAround 20°C.

ThroughDetermine the refrigerant state via pH value

Normal range:pH 8.5–10.5 (weakly alkaline to prevent corrosion);

pH < 8: An acidic environment accelerates metal corrosion, requiring the addition of a pH regulator (such as borax);

pH＞11: Excessive alkalinity may cause precipitation; partial replacement of the solution is required.
Testing frequency: monthlyTest once using precision test paper or an electronic pH meter, and avoid light or contamination that could affect the results.