ZX-811 Central Air Conditioning Cleaner

I. Main Uses of Central Air Conditioning Cleaner:

  Central air conditioning circulating cooling water contains a large amount of salt substances, corrosion products, and various microorganisms. Even treated water contains dissolved solids, gases, and various suspended substances to varying degrees. The presence of these substances can cause issues such as sedimentation, corrosion, and microbial (algae, slime) growth. After a period of operation, the water side of the central air conditioning system will accumulate a large amount of calcium and magnesium carbonate scale and microbial sludge. These deposits firmly adhere to the inner surface of the copper tubes, leading to deteriorated heat transfer, increased circulating pressure, reduced operational efficiency of the unit, and significant economic losses. These issues pose risks to the safe operation of the central air conditioning system. Chuangxiang brand central air conditioning cleaner is used for cleaning and descaling the cooling circulating water side of central air conditioning systems. It ultimately cleans the water side, improves the cooling efficiency of the circulating water, restores the cooling effect of the central air conditioning system, saves electrical energy for the engine, and extends the service life of the central air conditioning system.

II. Outstanding Features of Central Air Conditioning Cleaner:

 Central air conditioning cleaner is a specialized cleaning agent for the circulating cooling water and chilled water systems of air conditioning refrigeration units. It overcomes the shortcomings and deficiencies of previous cleaning methods and provides reliable technical support for the safe, stable, economical, and long-term operation of refrigeration units.

(1) Fully considering the specific circumstances of users, the cleaner is an organic compound of cleaning agents, algicides, dispersants, penetrants, and efficient corrosion inhibitors. No additional additives are required during use, simplifying and facilitating on-site installation and operation;

(2) High corrosion inhibition efficiency, fast cleaning speed, simple and convenient treatment of cleaning wastewater, and beneficial for pre-filming after material cleaning;

(3) Effectively inhibits galvanic corrosion of copper alloy-carbon steel composite parts during the acid cleaning process of copper tubes; strong resistance to Fe³⁺ and Cu²⁺ accelerated corrosion;

(4) The main cleaning and descaling agent is an organic series, safe for equipment, thorough in descaling, and with low corrosion rates; minimally corrosive and toxic to operators, simple and safe to operate. Additionally, this product does not contain toxic or harmful substances and can be discharged after simple neutralization, ensuring safety and environmental friendliness. The product uses solid components, is safe and easy to use, causes no harm to humans, no corrosion to equipment, and no impact on the environment;

(5) When used in conjunction with air conditioning cleaning modules, it ensures cleaning quality, reduces labor intensity, facilitates direct use by users and regular cleaning and maintenance of air conditioning equipment, and saves equipment maintenance costs;

(6) During the cleaning process, H⁺ can cause corrosion to the metal body and lead to hydrogen embrittlement. Therefore, corresponding corrosion inhibitors are added to this cleaner; oxidizing ions such as Fe³⁺ and Cu²⁺ produced during dissolution can cause pitting and copper plating of the metal body, so ion masking agents are also added to this cleaner.

III. Scope of Application of Central Air Conditioning Cleaner

(1) Suitable for various types of air conditioning units, can clean the circulating water systems and low-temperature water systems of condensers, evaporators, and absorbers in central air conditioning units, as well as equipment such as hot water boilers and water-cooled jackets of diesel generator sets;

(2) Applicable materials: copper, copper-nickel alloys, carbon steel, aluminum, titanium, stainless steel, and other materials.

 IV. Physicochemical Indicators of Central Air Conditioning Cleaner:

        State:              White or light yellow powdered solid 

       Acidity/Alkalinity (0.5%):    Acidic 

       Density:                  >1.5

        Corrosiveness:                  Slightly corrosive

        Flammability:                 Non-flammable, non-explosive 

        Toxicity:                     Non-toxic 

        Cleaning Performance (Descaling):        ＞99% 

       Corrosion Inhibition Performance:               ＞99%

 V. Usage Method of Central Air Conditioning Cleaner:

(1) Chemical cleaning process: Water rinse → Acid cleaning and descaling → Water rinse → Passivation;

(2) Disconnect other systems unrelated to the cooling coil, and connect the cleaning tank and cleaning pump to the cooling coil to form a closed cleaning loop; 

(3) Check for leaks in the cleaning system in a simulated cleaning state, and remove loose contaminants in the coil. When no large particles are visible in the outlet rinse water, the water rinse is complete;

(4) Circulate and add "Central Air Conditioning Cleaner" in the cleaning tank, control the concentration of the main cleaning agent between 3–5%, and maintain the temperature between 50–60°C. Circulate for cleaning and descaling for about 2–3 hours. Periodically measure the pH of the acid solution with pH test paper (once every 20 minutes), keeping it below 1. When the pH stabilizes within half an hour and no gas is released from the cleaning system, the acid cleaning process is complete;

(5) After the cleaning process, perform a water rinse to remove residual sludge and debris. When the visible impurities at the outlet are minimal and the pH is above 6, the water rinse is complete;

(6) After the water rinse is qualified, circulate and add "Passivation Pre-film Agent" for passivation treatment to improve the corrosion resistance of the tubing. Stop circulation once the solution concentration is uniform throughout the system, and soak for 2–3 hours. Discharge the passivation solution from the system, and the cleaning process is complete.

 VI. Precautions for Central Air Conditioning Cleaner:

(1) Not for consumption;

(2) Wear protective equipment during handling and operation;

(3) Shelf life: 2 years.