Yantai Honest & Quality Refrigeration Services Limited changed its name to 'Yantai Master Cheng Cooling System Ltd.' is a professional central air conditioning unit maintenance, central air conditioning system upgrades and cold storage equipment design, installation, sales and maintenance of an integrated enterprise. The company was founded in 2015 based on developments in Yantai Region refrigeration parts wholesale business model from the parts warehouse directly to the customer, accessories, cost of sales decreased by 10%; 10% of company profit to repair parts costs and customers. To thank refrigeration peers and customer support, according to the purchase amount at the end rebate. Distribution companies including: common Yantai refrigeration parts, refrigerator parts Yantai, Yantai air conditioning refrigerator parts, Yantai central air conditioning parts, Yantai icemaker, Yantai pond units, cooling towers Yantai Yantai shield the central air conditioning, cold storage maintenance Yantai, Yantai and humidity machine, air-cooled heat pumps Yantai, Yantai lithium bromide units, cold storage cabinet Yantai, Yantai thermostatic expansion valves, solenoid valves Yantai, Yantai chillers, Yantai refrigerator panels, etc. All product quality and cheap. Sales Department Address: Yantai City, Jingshan Road (Thames new north gate) Accessories bank address: ZHIFU Huangwu Wolong Industrial Park Business Office: 0535-2155664 Project Department: 0535-6645256 Website: www.ytzhicheng.com.cn a Contact: Phone: 0535-2155664 Business Office Project Department 0535-6645256 Mobile: 15953550506 Chen Kun Website: www.ytzhicheng.com.cn online QQ: 153823005 Second, information dissemination: 1 Yantai central air conditioning repair content: Yantai large-company since 2009 specialized in the central air-conditioning sales, central air-conditioning design, central air-conditioning installation, central air-conditioning maintenance, central air-conditioning maintenance, central air conditioning, cleaning, maintenance and reconstruction of central air conditioning, central air conditioning automatic control, central air-conditioning parts supply, central air conditioning compressor maintenance screw compressor maintenance, central air-conditioning integrated solutions and services to more than ten years, both from the technical side, the attitude or the quality of personnel have reached a considerable level; perfect after-sales service makes more specialized. Central air-conditioning maintenance, central air conditioning compressor maintenance, a screw compressor maintenance free home ★ ★ professional services, excellent technology to provide users with high quality, ease of central air conditioning repair, central air conditioning compressor maintenance service, repair bad does not charge any costs. Central air conditioning and fluoride ★ ★ free home central air safety by a predetermined pressure for air conditioning and fluoride, fluoride supplement the first test after the lack of fluoride, to ensure the quality and quantity of fluoride. Central air conditioning moves, central air conditioning installation, central air-conditioning maintenance and renovation ★ ★ free home central air conditioning moves, central air conditioning installation, central air-conditioning do not work close to the customer fluorine unnecessary waste, central air conditioning moves when maintenance and reconstruction, central air-conditioning installation once in place, thus saving maintenance costs of customers. Central air conditioning, cleaning, free home central air conditioning maintenance ★ ★ central air conditioning cleaning, central air conditioning maintenance in place, clean, intact assembly; customers do not dirty the walls, floor; so that customers are central air conditioning cleaning, maintenance of central air-conditioning effect. 2 Yantai central air-conditioning repair and installation sales of content within the home central air conditioning installation step machine in place: The first step is to approach the construction team lifting the machine, pay attention to two points here as long as you can avoid follow-up questions. a :: distance from the roof of the machine must not be less than 1 cm, and the top of the wall to avoid resonance machine is running. b: to consider lifting the machine five thousandths of the slope, then the condensate side of the water to be slightly lower, to avoid condensation of water did not break out. Refrigerant brass installation: After installing the machine to install the refrigerant copper pipe, which is central air conditioning installation process is the most important aspect. a: All welding point should be copper and the connection pipe welding differences, there is no brass and copper welding. b: it must be charged with nitrogen (nitrogen welding process) in the welding process in the copper pipe, copper pipe inside which makes no air avoids the welding so that the inner wall coke during the compressor operation becomes failure. c: After the completion of welding should be carried out with high-pressure nitrogen gas pipe soot blowing, keep the inside clean brass. Nitrogen packing: This is the pressure test must be carried out after soldering copper pipe, copper tube filled to a certain pressure of nitrogen packing, general stress test time was 24 hours. To note: use R410 refrigerant pipe pressure required to maintain 40 kg, R22 refrigerant pipe is required to maintain a pressure of 20 kg. Nitrogen is an inert gas, expansion coefficient is small, there is almost no pressure changes due to thermal expansion and contraction generated. If the gauge has dropped the test, you should check whether the refrigerant pipe welding problems. Condensate pipe installation: condensate hose connected from the machine to leak out to the outside or at least keep the> 1% slope. Installation of high quality from the indoor unit is connected to the nearest landing, finally together in conjunction with other condensate pipe or floor drain connected to the outdoors. Installing the machine: to fan outlet outside the machine must be free of obstructions within 50 cm, all landing foot cushion must be installed to ensure the normal operation of the vacuum outside the machine: after installation outside the machine before filling the need for refrigerant pipe Refrigerant vacuum, air tube extraction, keeping the tube dry and free of moisture, or air and water will mix with the refrigerant to produce ice crystals, can cause serious damage to the equipment. Specifications: After the refrigerant pipe needs to be connected to the outer machine operation; vacuum time is generally much less than two hours online, a drag of a wind machines less than 20 minutes. Refrigerant charge: After work is completed, you can open the refrigerant valve, release of refrigerant go out machine comes, power test and detect pressure, appropriate supplement until debugging is complete, it can achieve the ideal working conditions. Air measuring installation: return air: home central air conditioning return air is usually mounted together with manhole, vent size must be consistent with the machine back to the air, can not appear misaligned, so that it can achieve the best return air flow; and ensure adequate maintenance space. Outlet: outlet must not be installed in the vicinity of lights (reason: If the outlet before have lights, air conditioning system will result in heat shielding the wind, while the hot air is going up, so that the hot air trapping the upper room, so that the whole space feel lack of heat, you need a long time to have a hot feeling) 3 Yantai refrigeration accessories wholesale sales of products mainly include: the brand refrigeration compressors, copper; brass straight; coil coating ;; Plastic brass; air conditioning brass; brass refrigeration evaporator, condenser manufacturing, assembling commercial central air conditioning, industrial chillers, screw chillers, hot water, large air-cooled heat pump units, clean air conditioners, constant temperature and humidity, dehumidifiers and humidity machines, Copeland compressors, Daikin compressor Maneurop compressor, Bitzer compressor, compressor Performer, Bristol Compressors, Hitachi compressors, Sanyo Compressor, Taikang compressors, compressor Matsushita, Toshiba compressor, Mitsubishi compressors, compressor Aspen Parra, Xuemei compressors, refrigerator compressors, cold storage units, water-cooled condensing units, air-cooled condensing units, V-type condensing unit air-cooled condensing , a shell and tube water-cooled condenser, shell and tube evaporator water-cooled copper fittings, copper Qingdao, accessories, cost of sales decreased by 10%; 10% of company profit to repair parts costs and customers. To thank refrigeration peers and customer support, according to the purchase amount at the end rebate. 4 Yantai Ebara bromide content service specializing in lithium bromide central air conditioning repair service, with many years of lithium bromide central air conditioning unit commissioning and maintenance experience. Perennial in lithium bromide refrigeration unit cleaning, leak detection, maintenance, emergency rescue, lithium bromide solution regeneration process, replace brass and other maintenance and repair work. 6 years the company to impressive achievements, the integrity of the service has been recognized by the industry and the confidence of customers, providing customers with a stable production and energy have made positive efforts. The company pursues honesty, customer first, Technology Pilot, quality and excellence. Quality, in order to achieve customer satisfaction as the principle, willing to work with colleagues to join hands in creating a brilliant tomorrow. 5 Yantai Industrial Chiller Industrial Chiller accessories maintenance content and general water cooling device is completely different, because the machine has independent refrigeration system will not be affected by the temperature and the environment, the water temperature 5 ℃ ~ 30 ℃ within the scope of regulation and control, which can achieve high-precision, high efficiency control temperature. Chiller with a separate water system, water recycling within the chiller can save a lot of water. Industrial chillers are widely used in industrial production processes, such as: Plastics Industry: accurate control of various plastics processing mold temperature, plastic beer shortened cycle to ensure product quality and stability. Electronics industry: stable internal electronic components in the production line of molecular structure, improve the passing rate of electronic components, used in ultrasonic cleaning industry, to effectively prevent expensive cleaning agents volatile and volatile bring harm. Electroplating industry: plating temperature control, increase density and smooth plating, plating shorten cycle, improve production efficiency, improve product quality. Machinery industry: control hydraulic system pressure oil temperature, hydraulic oil temperature stable, extend oil life, improve the efficiency of machinery lubrication, reducing wear and tear. Vacuum coating: vacuum coating machine to control the temperature to ensure the high quality of plating. Food industry: food processing for high-speed cooling after adapting packaging requirements. There are also temperature controlled fermentation of food. Chemical fiber industry: freeze drying air, to ensure product quality. 6 Yantai central air conditioning repair parts cleaning content that is central air conditioning cleaning central air-conditioning system as a whole for cleaning dust, in addition to old, eliminate bacteria virus, avoid indoor air pollution, improve the cooling effect, while extending the life of the various components of central air conditioning. Central air conditioning cleaning include: ventilation ducts, fan coil, the host, water systems, wind cabinet, cooling tower cleaning. Before washing, cleaning and construction units should be based on the requirements of the air conditioning system conditions and hygiene evaluation reports, air conditioning systems need to consult the relevant technical information and a full investigation needs to be cleaned and inspected to determine the appropriate cleaning methods, cleaning tools and equipment, make clean program. Central air conditioning long run will lead to scale apparatus is clogged, will reduce efficiency, increase energy consumption, shortened life expectancy. If the scale can not be cleared in time, will face maintenance, downtime or dangerous scrap replacement equipment. For a long time the traditional cleaning methods such as mechanical methods (shaving, brushing), high-pressure water, chemical cleaning (pickling) appeared in a central air cleaning when a lot of problems: You can not completely remove scale and other deposits, and to cause corrosion of equipment, and the residue The acid to produce secondary material corrosion or corrosion under the scale, resulting in replacement of equipment, in addition to cleaning toxic waste, need a lot of funds for wastewater treatment. Enterprises can be efficient and environmentally friendly cleaning agent to avoid the above situation, it is an efficient, environmentally friendly, safe, non-corrosive characteristics, not only a good cleaning effect and no corrosion of equipment, to ensure the long-term use of central air-conditioning. Yantai home central air conditioning central air conditioning cleaning of pipes, filters, heat exchangers working surface dirt accumulation will cause air conditioner itself "sick job", reduced heat transfer efficiency of the system, the ventilation resistance increases, reduce air conditioning work quality and increase unnecessary energy consumption, the system operating costs increased substantially. As living standards improve, more and more people are choosing home central air conditioning. For an area of ??200 square meters of the family is concerned, with the home central air conditioning really have to install a lot more convenient than air conditioners, more practical. So how can we do to home central air conditioning maintenance, so that the air-conditioning to maintain a good use of effects and normal life it? In everyday home central air conditioning maintenance, we should pay attention to the following questions: 1, regular contact with central air conditioner check electrical plugs and sockets are good, if you find the air conditioner is running, the power lead or plug is hot, it may be Because the electrical wiring is too thin or plug socket is bad, we should take the appropriate corrective action under the circumstances. 2, pay attention to whether the water system piping connections leaking. If the multi-line system and duct system should always observe whether the interface portion of the air conditioner refrigerant lines refrigerant leak. If there is central air conditioning, cleaning grease, then there is a refrigerant leak, should be addressed promptly to avoid leakage caused by an insufficient amount of time the refrigerant, which will affect air conditioner cooling (heating) effect, and even cause damage to the compressor. 3. The water system and duct system to regularly clean the filter. General cleaning once about 2-3 weeks. When cleaning out the filter with a dry soft bristle brush to dust filter online. It can also be used with water to wash away the dust filter online. Dried and then load the air conditioner use. For dusty environment, the filter should be cleaned more frequently, in order to avoid too much dust, affect the amount of wind air conditioner. 4, multi-line home central air-conditioning should be cleaned regularly air conditioner condenser and evaporator coil, using a brush and vacuum cleaner to clean dust on the coils. Note that in the cleaning brush and a vacuum cleaner should be cleaned in the vertical direction of the coil, do not clean the horizontal direction, so as not to damage the finned coil. 5, when the air conditioner for a long downtime (such as air conditioners seasonal shutdown) to deal with the air conditioner for a comprehensive cleaning. Only after a good start and central air conditioning cleaning air conditioner fan run for about 2-3h, so the air conditioner inside dried, and then the air conditioner with a dust cover to cover better. 7 Yantai cold storage installation maintenance parts into the national development priorities as cold-chain high-tech industrialization key areas, especially the refrigeration industry competition, how to choose a professional manner, high customer satisfaction rate (Yantai Master Cheng refrigeration company) become critical step. At the same time we need to consider a reasonable cost, quality and service cold storage can not be ignored. Cold storage design, build cold storage, cold storage installation of various large refrigerator, small and medium sized cold storage, logistics and cold storage, frozen frozen, fresh fruits and vegetables and other projects, all types of foods (fruits, vegetables, poultry, eggs) cold, cold medicine (reagents, blood, drugs) agricultural products cold storage, electronic biology, cold storage and other low-temperature laboratory equipment works. . 8 Yantai refrigerant R22R134R410 content: Freon-12 (code: R12) R12 alkane halides, scientific name halons, the formula CF2Cl2. It is China's small and medium sized refrigeration device more widely used in pressure in the temperature of the refrigerant. R12 standard evaporation temperature of -29.8 ℃, the condensing pressure is generally 0.78 ~ 0.98MPa, the solidification temperature of -155 ℃, standard refrigeration unit volume of about 288kcal / m3. R12 is a colorless, transparent, odorless, almost no toxicity, no burning, no explosion, very safe refrigerant. Only suffocating air volume only when the concentration of more than 80%. But when in contact with an open flame or temperatures up to above 400 ℃, the decomposition of harmful gases. R12 with any proportions various organic lubricant mutually soluble and can be dissolved, but its water absorption is extremely weak. Thus, in a small Freon refrigeration device does not have an oil separator, and the installation of the dryer. R12 also provides the moisture content of not greater than 0.0025%, the system can not work with the general natural rubber gaskets, and should use nitrile rubber or chlorine ethanol and other synthetic rubber. Otherwise, it will cause the gasket swelling caused by leakage of refrigerant. Freon -22 (code: R22) R22 is an alkane halides, scientific name difluoromonochloro methane, the formula CHClF2, standard evaporation temperature of about -41 ℃, the solidification temperature of about -160 ℃, condensing pressure similar with ammonia unit Standard refrigeration volume is about 454kcal / m3. Many nature and R12 R22 similar, but not as good chemical stability R12, toxicity is also slightly larger than the R12. However, R22 cooling capacity per unit volume than R12 larger, closer to ammonia. When asked to low temperature -40 ~ -70 ℃, the use of R22 than R12 fit, so when posting R22 is widely used in the two-stage compression refrigeration or air conditioning system in the -40 ~ -60 ℃. R-134a (Code: R134a) Molecular formula: CH 2 FCF 3 (tetrafluoroethane), molecular weight: 102.03 boiling point: -26.26 ℃, freezing point: -96.6 ° C, the critical temperature: 101.1 ℃, critical pressure: 4067kpa saturated liquid density : 25 ℃, 1.207g / cm 3, liquid specific heat: 25 ℃, 1.51KJ / (Kg ℃?) Solubility (in water, 25 ℃): 0.15%, the critical density: 0.512g / cm3 ozone depleting potential (ODP) : 0, global warming coefficient (GWP): potential evaporation under 0.29 boiling point: 215 kJ / kg quality indicators: purity ≥ 99.9%, moisture PPm≤ 0.0010, acidity PPm≤ 0.00001, evaporation residue PPm≤ 0.01 R134a as R12 The alternative refrigerants, many of its features with the R12 is very similar. R134a very low toxicity, non-flammable in air safety category A1, is very safe refrigerant. R134a good chemical stability, but due to its high water solubility than the R22, so the refrigeration system is unfavorable, the presence of even a small amount of water, the role of lubricants, and will produce acid, carbon dioxide or carbon monoxide, it will metal corrosive effect, or have a "copper" effect, so dry and clean R134a system requirements higher. R134a for steel, iron, copper, aluminum and other metals found no chemical reaction with each other phenomena, only a slight effect of zinc. R134a is internationally recognized as one of the main alternatives when posting refrigerant CFC-12, commonly used in automotive air conditioning, commercial and industrial refrigeration systems, and a hard plastic as a blowing agent for insulation materials production, can also be used to configure Other mixed refrigerant, such as R 404a and R 407c and the like. R-404A refrigerant physico-chemical properties: R404A is a non-chlorine non-azeotropic refrigerant, under normal temperature and pressure is a colorless gas, stored in the cylinder is compressed, liquefied gases. Its ODP is zero, and therefore are not ozone depleting R404A environmentally friendly refrigerant. Main purpose: R404A is mainly used to replace R22 and R502, with a clean, low toxicity, non-flammable, the cooling effect is good, a lot for the cryogenic system. R-410A refrigerant physico-chemical properties: under normal temperature and pressure, R410A is a non-chlorine fluorinated alkyl non-azeotropic refrigerant, colorless gas, stored in the cylinder is compressed, liquefied gases. Its ODP is zero, and therefore are not ozone depleting R410A environmentally friendly refrigerant. Main purpose: used extensively for home air conditioners, small commercial air conditioners, residential central air conditioning.