Purity of R22 CHCLF2 is actually a kind of pure at least more than ninety-nine percent;
Current market of counterfeit R22 containing monochloro methane and other highly corrosive substances, a high percentage.
A the methane of cl has a strong corrosion resistance, can cause severe corrosion to the refrigeration
compressor of the unit, resulting in compressor scrap.
Remind: now fraud means many small-scale operations, we purchase don't covet petty gain must buy popularity of big brand, for example, dupont, etc.
For other refrigerants, we can adopt the following method to simply: method 1: the refrigerant tank inversion, and release a small amount of refrigerant to a piece of white paper, if there is a obvious impurity in white paper or liquid water, poor quality of refrigerant, is not recommended;
Method 2, refrigerant cylinder pressure gauge testing, control the refrigerant temperature and pressure characteristics, test whether the pressure in the bottle in the normal range, such as the abnormal pressure obviously is not recommended.
Method 3, used in refrigerants in the middle, can test the pressure in the bottle again, for refrigerant R22 this single component, two bottles of pressure measurement value should be very close to, but for inferior refrigerants, often mixed with a variety of ingredients, refrigerant in bottle after use due to the change of composition usually there will be a large bottle of pressure difference, if encounter this kind of phenomenon, advice immediately stop using the refrigerants, and would like to have filling to the emissions of refrigerant in the system clean to avoid pollution system.
Method 4: in system debugging phase, if it is found that the following anomalies 1)
And system refrigeration capacity obviously insufficient and through inspection found no other abnormal need to focus on the condition of the refrigerant;
, system dryer filter or expansion valve block, and the blockage is tan wax-like or black sludge need to focus on refrigerant when foreign body;
, appeared in the process of system running high, low pressure or temperature anomaly, or stop state system balance when abnormal pressure (
To control the refrigerant temperature and pressure characteristics)
, need to focus on refrigerant.
When these anomalies, Suggestions from the system makes a purity test of refrigerant to screen inferior refrigerant risk.
And in the meantime, it is suggested that the refrigerant compressor side drain or released the refrigerant in the system, in order to avoid potential inferior, in turn, damage to the compressor, refrigerant and compressor contact must be vigilant, looking for formal channels.
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