I. Introduction:
High and low temperature test chamber is a kind of commonly used experimental equipment, which can be used for low temperature, high temperature and constant warming experiments. It is widely used in electronic electrician, automobile motorcycle, ship weapons, universities, research institutes and other fields.
Second, characteristics:
1, there are types of high and low temperature damp heat test chamber, high and low temperature alternating test chamber and high and low temperature alternating damp heat test chamber; and high and low temperature impact test chamber is divided into two-box and three-box;
2, can set the high temperature and low temperature test, after the equipment work, after a period of time after the temperature or temperature reduction to achieve; high and low temperature impact test chamber is also done high temperature and low temperature test, but it instantly changes in high temperature and low temperature, very short During the period of time from high temperature environment to low temperature environment, and vice versa;
3, the test area to take the sample bracket fixing method; high and low temperature impact test chamber two-box type is to take the activity basket, so that the sample in the high temperature and low temperature conversion, three-chamber sample holder is the same with the high and low temperature test box, Also take the sample bracket fixation.
Third, cleaning and maintenance
1. External cleaning and maintenance inside the box
1) Remove internal impurities before operation.
2) The power distribution room should be cleaned at least once every six months. When cleaning, you can use a cloth cleaner to scrub the indoor dust and other surfaces.
3) The exterior of the cabinet must also be cleaned more than once a year. When cleaning, wipe with a white cotton cloth.
2. Inspection and maintenance of high and low temperature test chamber humidifier Water storage in the humidifier should be replaced once a month to ensure that the water quality is clean. The humidification tray should be cleaned once every month to ensure smooth water flow.
3. When the high-low temperature test box is used to check the operation of the over-temperature protection high-low temperature test box, the maximum value of the over-temperature protection is set to 20°C~30°C. When the temperature in the test chamber rises to the set point of the over-temperature protection, the heater power supply stops. The "EKDHEAT" over-temperature warning light is on but the fan is still running. If it is running for a long time and unattended, please check it before operation. Overheat protector is set properly [Wet ball overheat protector is set to 150°C].
4. Condenser dust removal The condenser should be maintained on a regular monthly basis, using a vacuum cleaner to suck dust from the condenser heatsink mesh or use high pressure air to remove dust.
5. Replacement of wet ball test cloth When the surface of the test cloth is not clean or hardened, or after the temperature control is completed, the test cloth must be replaced before continuing the temperature and wet sphericity control. The test cloth should be replaced once a month. When replacing the cloth, wipe the temperature sensing element [Sen-sor]. When replacing the new test cloth, clean it first.
6. Check and adjust the water level of the wet bulb. The water level of the water reservoir should not be too high, so that the water overflows the water collection tube or is too low to cause the wet ball test cloth to absorb water abnormally. The accuracy of the wet ball can be maintained at approximately six full minutes. Adjust the water level of the stagnant water tank to adjust the height of the water tank.
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