【 Weak current college 】 summer central air purification system maintenance

Shopping Centre, central air conditioning system using cold source devices according to the power supply, investments, building size and other factors into consideration, the shopping malls of central air conditioning unit types, according to research users from these areas to focus on maintenance, will extend the life of air conditioning equipment, slowing down the speed of cooling efficiency.

Cooling water system

The condensers, cooling towers, pumps, piping, valves, filters and other components of the cooling water system, it is the role of the refrigeration system heat emission into the atmosphere. Central air conditioning condenser in the Shui side will gradually form a layer of scale. Condenser water quality using longer, harder, its scale, the more thick thickness. Due to the small scale thermal conductivity, heat transfer, condenser effect causes the freezer refrigeration effect. Therefore, you must take the appropriate measures to remove the condenser water side of the scale and technology challenges. Remove the condenser water side of the scale of the traditional methods of artificial scrub, mechanical and chemical cleaning. In recent years some shopping centre, central air conditioning cooling water system installed electronic water treatment because the instrument itself works decided to remove the impurities only through sewage achieve anti-fouling and air operators tend to ignore this. Installed electronic water treatment is not necessary to drain this is wrong understanding. Each method has its weaknesses. This occurs only when the condenser water side of the scale the whole refrigeration system functioning after cleaning the condenser of the scale. Next-generation water treatment with the measurement temperature and water solubility of total solids, then automatically adjusts the instrument's operating parameters. But sewage work still to be ignored.

Legionnaires ' disease infection and its countermeasures: 1976 in the United States Philadelphia found legionnaire's disease. 1981 in Nanjing discover first Legion cases. Legionella living conditions is: when the water temperature is 25 °-42 ° c (37 ° c water temperature which multiply fastest), water stagnation, the water contains substantial scale, sediment, microorganisms and other membrane and Amoeba will promptly breed and possible threats to human health.

Central air conditioning equipment in cooling water systems to Legionella survival and reproduction provides favourable conditions: first, cooling water temperature at 31 ° c-35 ° c; and second, a large number of air cooling water for washing, dust, organic matter and microbial and debris in the deposits of the cooling water system, these substances as Legionella nutritional source of propagation. This tower and pipe cleaning work reduces the growth of Legionella.

Effective measures for the prevention of Legionnaires ' disease: A cooling tower circulation water regularly invest in sanitizers and biocides for Legionella Taiwan company production of ARKO-400 biocides to Legionella suppression and killing all have excellent results, solving cooling towers for sunshine, covered with MOSS and dirty plug in. Add once a week. B regular cleaning of cooling water and water, clear water microbes to as nutritional source of corruption debris to reduce microbial reproduction, it is recommended that a year clean 1-2 times the available production in a factory in Guangdong Province high air conditioning furring scavenger for clean, quick and convenient. C periodically check water quality, water quality decisions under for water. D ensure a certain amount of added water in order to reduce the cooling water evaporation.

2.2.2 chilled water system

Chilled water system water is generally used tap water, the water in the system without contact with air, sunlight, water quality is bad. Water quality deterioration, the main reason for this is not a scaling, but corrosion.These corrosion due to supplement water into oxygen, various metal materials for galvanic corrosion caused by the growth of anaerobic bacteria. Corrosion of the sludge, may result in water quality deterioration, pipe plug, particularly fan coil water filters easy to plug, the impact of the refrigeration effect over time also produces the leak. Taiwan a company of the closed system corrosion inhibitors ARKO-501 joined chilled water system can effectively on the pipeline system in all metal anti-corrosion effect are excellent, and prevent the formation of sediment, users simply add once a week.

2.3 terminal equipment maintenance and indoor air quality

2.3.1 air blower plate Tube, fresh air handling units, air coolers and air tank maintenance

Central air conditioning terminal equipment on the air for hot, wet processing reaches the set value is sent to the air conditioning room, these devices are in use after some common fault occurs and proposed strategies for addressing these issues.

2.3.2 indoor air quality and air purification equipment

Poor air quality in the Mall because a, shopping malls, ventilation, air conditioning system with air filtration, in person, shopping malls, air conditioners between form a closed system, in this system, the human body cannot get plenty of fresh air, thus causing some frail customers or trance on a salesperson's Mall. According to the understanding of the system of adequate oxygen concentration in the standard should be 21%. Medical monitoring data show that living space if several hours ventilation oxygen concentration decreases to 17 ~ 19%, thus affecting the human body needs oxygen to the normal, resulting in a dizzy was weak. B, arcade building decoration materials, furniture constantly emit formaldehyde, chlorides, benzene and other toxic substances, and very high concentrations. C, customer, sales at the Mall activities, through the respiratory tract, sweat glands emit large amounts of pollutants. D, shopping malls are usually set in a convenient location, the number of vehicles, automobile exhaust gas inevitably ran in to the shopping centre. In order to create a good environment for the technical handling of indoor air is necessary. Table 3 gives the ultra-violet disinfection technology, installation location, effects, effects and applications. Regular or periodic cleaning filters, select qualified filter, you can avoid the gusty area office with black stains, affect customer shopping cravings.

3. conclusions and recommendations

On the refrigerator and system, according to the operation and maintenance for annual overhaul; attention to water treatment; periodic cleaning end device filters; on maintenance management run team leaders and staff, to carry out targeted training to enable them to fully understand and be familiar withHeating ventilation and air conditioning system of management control and maintenance technology; research customers shopping on the environment, to run the management and technical personnel to provide monthly energy consumption and costs, so that managers pay attention to the power to formulate the next month's energy efficiency indicators, will be one month per year of outdoor temperature and the current energy system into a form that is available to run the management and technical personnel.