One: water purifier and its purchase
Water purifier: a machine that purifies tap water
Precautions for purchasing a water purifier:
1, buy brand-name products
2, the purchase price is higher than the price:
a, the water purifier structure is different, the water purification effect is also different
b. Multi-stage filtration water purifier.
c. The water purification effect of the reverse osmosis pure water machine is the most ideal.
3. Choose according to water quality.
a. The water hardness of different regions is different. The high hardness water quality in the north of China and the limestone area in the south have high content of calcium and magnesium ions in water, which is easy to scale. You should purchase advanced filtration water purifier with ion exchange resin filter.
b. In urban water with chlorine, heavy color and odor, and organic content of organic water, you can purchase household water purifier with more activated carbon load. Because activated carbon has a strong adsorption effect on residual chlorine and heterochromatic odor in water, it has obvious removal effect on organic matter.
c. For tap water purification with turbid water quality in urban and rural areas, household water purifiers with dual functions of coarse filtration and fine filtration should be purchased. Serious pollution in water requires thorough filtration of bacteria, viruses, odors, pesticides, heavy metals and other impurities in the water. If you do not need to drink it directly, you should purchase a reverse osmosis pure water machine.
Two: pure water machine purchase
1. Pure water machine is a kind of pure water produced by filtering the raw water (physical method) through the current international popular reverse osmosis method without adding any compound. Divided into two categories, one is a drinking water purifier, also known as a household water purifier, and the other is a laboratory pure water machine, which can meet the laboratory requirements for pure water quality.
2: Purchase considerations for pure water machine
a. Look at the manufacturer: When purchasing, it depends on whether the manufacturer has the independent design production capacity of the product.
b, see the quality:
c. Third, the price: high-end products are imported from the United States, Hong Kong and South Korea, or imported and imported joint parts, such as Hong Kong Ovis, the United States, Yikou, Kaflon, South Korea's Shihan, etc. In the 2000 ~ 4000 yuan up and down; low-end products using domestically produced parts, filter cartridges and other self-injection processing, the price is below 2,000 yuan.
d. Look at the capacity: Under normal circumstances, the daily water production of pure water machine should be more than three times the actual water consumption.
e, look at the type: After all, the user spends money to buy a piece of furniture, to see if the design is reasonable and easy to use. The traditional pure water machine product installation is more complicated. In the future, when the filter element is changed, the water pipe and the power supply must be removed to replace it. It is too troublesome and easy to malfunction; and the three legs are placed in a row and the ground is unstable; the machine has a rough appearance and the parts are bare. In addition, the machine has a high failure rate; high-voltage direct power supply has many safety hazards.
f. Look at the service: When purchasing, users should consider whether the merchant has the service capability of on-site installation, whether to establish user files and long-term after-sales service capabilities. A pure water machine is a product that requires long-term service. When purchasing, you should also consider whether the business has a stable after-sales service.
Three: water softener and its purchase
1. The soft water machine softens the water. It is a device for removing water and alkali. It uses the principle of ion exchange to remove the hardness (water alkali) by more than 99% without replacing the filter element. All water for the whole family can be softened completely, connected in series on the main pipe behind the water meter, installed in the kitchen cabinet or at the user-specified location.
2, the role of water softener
Water equipment (wall-hung boiler, radiator, water heater, solar energy, etc.) will never scale and block, and the service life will be longer, and the safety hazard and equipment loss caused by scale will be eliminated. Bathroom facilities (glass bath room, mirror surface, bathtub, toilet) Etc.) With soft water, there are no white and rust spots that are difficult to clean. Moreover, women often use soft water to bathe and have a good cosmetic effect. We can save a lot of energy and trouble in our lives.
3, soft water machine purchase notes:
a. Avoid placing the water softener near the heat source or taking necessary thermal insulation measures. It is strictly forbidden to connect to the hot water pipeline or the pipeline that may cause hot water to be poured.
b. When the raw water does not meet the municipal tap water standard, if the mud sand content is large, the residual chlorine exceeds the standard, etc., the pretreatment device should be installed before the soft water machine.
c. There should be enough space between the water softener drain pipe and the drainage floor drain to prevent siphoning.
d. After the installation is completed, the valve head should be adjusted to the backwashing position, and then the inlet valve should be opened. The purpose is to discharge the protective liquid of the resin into the sewer, and then start the immediate regeneration process. During the regeneration, it should be observed that the operation of each program is normal. .
e, water softener should use edible salt (sun salt), insoluble impurities should be less than 1%, it is forbidden to use salt containing various additives.
f. During the operation of the water softener, the user should pay attention to check the salt content in the salt tank. The salt content should reach one-fifth of the height of the salt tank. When the salt surface height is less than one-fifth, the salt should be added in time.
g. Salt bridges are sometimes formed in the salt tank, that is, a space is formed in the lower part of the salt layer. During the regeneration process, the salt cannot be dissolved in water to form a salt solution, the resin is not regenerated, and the soft water machine cannot produce qualified soft water. . Users should always check whether there is a salt bridge at the bottom of the salt tank. If there is a salt bridge, please smash it.
h. In case of long-term deactivation (or when the water pressure is unstable), in order to prevent the water hammer phenomenon, the main valve must be closed to make the water softener water and power off; when using, the electric control type must be turned on first.
i. The optimal inlet pressure of the water softener is 0.2~0.5Mpa. Above 0.5Mpa, the pressure reducing device must be installed.
j. The size and installation position must be designed by the designer before installation; the user needs to keep the floor drain; the electric control type needs to reserve power.
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Sigma Elevator Company is a subsidiary of Otis Elevator Korea (OEK) in South Korea for all overseas/export markets. It was founded in 2000.
Starting in 1968, "Goldstar" elevators, and later on, "LG" elevators, were counted among the world's top elevator brands. With the beginning of this new millennium, that legacy lives on through the birth of "SIGMA" elevators.
SIGMA Elevator Company will continue on with its mission of supplying elevators and escalators to more than 50 nations worldwide through its global network of 11 sales companies, 2 offices, and 52 agents or distributors.
SIGMA Elevator Company is dedicated to providing its customers with the best quality products and services. SIGMA elevators feature unmatched safety, ride comfort, and modern design. SIGMA escalators and moving walkways are held to similar safety and comfort standards and are integral parts of our modern urban aesthetics.
Changwon factory, Korea, the main factory of SIGMA Elevator, has long been a well-established name in the global elevator industry. SIGMA`s Dalian factory in China produces elevators & escalators to meet the demands of the local and worldwide markets as well.
SIGMA Elevator Company is committed to increasing customer value through a sharp focus on product innovation and customer satisfaction. With technology developed over the past 30 years, an enduring innovative spirit, and enthusiastic attitude towards providing customer value, Sigma Elevator Company stands by its product and service lines with confidence.
Sigma currently has businesses in more than 75 countries worldwide, and subsidiaries in five countries; Hong Kong (China), Vietnam, Thailand, Malaysia and Singapore.
In the United States, Sigma elevators were distributed by CemcoLift, which was a historic elevator company bought by Otis and based in Hatfield, PA. However, in 2012 CemcoLift has gone bankrupt and replaced by a new company called Minnesota Elevator Solutions.
It's headquarter, factory and testing tower are located in Changwon, South Korea, which are also operated by Otis Elevator Korea. It also has a secondary factory in Dalian, China, opened in 1998 to meet demands on Chinese elevator market.
In 2014, Sigma had a partnership with EXPRESS Elevator Co., Ltd., an elevator company based in Suzhou, China as well as a subsidiary of Otis. In 2016, Express/Sigma opened their headquarters in Suzhou, China
LG Elevators was the elevator and escalator division of LG Electronics. It was acquired by Otis in 1999 and was later known as LG-OTIS Elevator Company.
LG changed its name from GoldStar in 1994 after GoldStar merged with Lucky Chemical. In 1999, it was acquired by Otis Elevator Company, later known as LG-OTIS Elevator Company from 2000 until 2003, when it was renamed to OTIS-LG Elevator Company. Later in 2006, OTIS-LG was again renamed to Otis Elevator Korea.
LG-OTIS Elevator Company (later OTIS-LG Elevator Company then Otis Elevator Korea) was a joint venture company between Otis and LG Electronics` elevator and escalator division, LG Elevators in South Korea. It was formed in 2000. The brand was renamed to OTIS-LG Elevator Company in 2003 and later Otis Elevator Korea in 2006, where it is currently known as that in South Korea
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CEP Elevator Products ( China ) Co., Ltd. , https://www.zjelevatordoorsystem.com