1. During operation, do not open the door unless absolutely necessary. Otherwise, the following undesirable results may result.
If the high-temperature test, high-temperature hot gas out of the box, very dangerous if the low temperature test, resulting in freezing system is easy to frost, affecting the test results inside the door still maintain high temperature, causing damage to high temperature air may trigger a fire alarm, resulting in malfunction 2. Please note that this machine must be grounded safely and reliably to avoid electrostatic induction. 3. Avoid turning off and restarting the refrigeration unit in three minutes. 4. If water is cold, use tap water or treated soft water to keep the cooling system circuit smooth. When placing a heating sample inside the box, use a power supply for the sample power control. Do not use the power supply of the unit directly.
The temperature test box can not be installed upside down and must be placed horizontally on the floor so that the operating door of the temperature test box can be easily opened and the noise during mechanical operation can be reduced.
Cautions for installation and maintenance of cold and hot shock chambers 1. There should be a good ventilation space behind the test chamber so that the condenser can function as a heat sink. And avoid direct sunlight, do not close to the stove and other heating body, so as not to affect the freezing effect.
2. Although the materials inside and outside the test box are all made of high-grade stainless steel, parts and electronic control centers are prone to cause adverse effects and reduce efficiency. This should be avoided as much as possible.
3. Please use a special switch for the power switch. Do not use it with other electrical machinery. Common Soft wire of the SW plug Do not place a floor or a damp place to avoid stepping on or leakage. 4. An autotransformer should be installed where the power supply voltage is too low. In order to increase the voltage to the rated value, it cannot be started because the voltage is too low, and the compressor motor is burned.
5. During the test, the operation door must not be opened for a long time to avoid water dancing inside the box. 6. The warm test box should be kept clean at all times. When the outer box is clean, you can apply a little varnish and polish it with a soft dry cloth. When it is dirty, use a neutral lotion and clean water to clean it. Do not wipe the inside or outside of the machine with a brush mill, ACID, benzene, or hot water. The dust on the back or the wall is most likely to be contaminated. Heat dissipation should always be noted.
7. If this model is water-cooled (WATERCOOLING), special attention should be paid to the treatment of water quality. Groundwater should be avoided as much as possible. Groundwater contains more minerals and it is prone to scale formation, which affects the cooling effect and reduces the life of the machine.
In order to facilitate the operation of the complete system, the automatic control system, alarm system, protection system, and induction arrangement at the electronic control center are displayed on the control board. There are also status indicators to indicate that, if any abnormality or failure occurs during operation, the protection system The power will be automatically cut off and the red light will automatically warn you. The flow principle refers to the automatic control circuit diagram.
Dongguan Qinzhuo Test Equipment Co., Ltd. specializes in production and sales, temperature and humidity cycle test box, temperature and humidity cycle test box, photoelectric constant temperature and humidity test box, LED constant temperature and humidity testing machine, thermal shock test box, UV aging tester, UV Aging test box, Xenon lamp aging tester, and according to the needs of users design, manufacture various types of non-standard environmental testing equipment, welcome your inquire. 0769-8220535318925802250 Miss Zheng
Many industries have begun to use optical brighteners, such as paper, plastics, leather, and detergents. At the same time, fluorescent whitening agents are also used in many high-tech fields, such as fluorescence detection, dye lasers, anti-counterfeiting printing, etc., and even high-sensitivity films for high-altitude photography. In order to improve the sensitivity of photosensitive latexes, fluorescence is also used. Brightener.
In China, optical brighteners were first classified as printing and dyeing auxiliary products, and then classified as dye products. Due to its unique properties and large amount of demand, it has been separated from the above two industries and has become a separate class of fine chemical products. The first largest user of domestic fluorescent whitening agents is detergents, the second largest user is paper, and textiles are the third largest user.
Optical Brightener,Fluorescent Brightener,PVC Brightener,Optical Whitener,Brightening Agent
HENAN JINHE INDUSTRY CO.,LTD , https://www.hntitaniumdioxide.com