The high and low temperature test chamber should pay more attention to maintenance during normal use and after the test, which can extend the service life of the equipment and also optimize the test effect. The following describes the maintenance of constant temperature and humidity test chamber 1. Before the test, check whether the water level of the water head is too high or too low. If the water overflows the water head or is too low, the wet bulb test cloth will not absorb water normally, which affects the accuracy of the wet bulb. The water level should be kept at about six points. 2. After every two or three tests, you need to check the height of the water box. You can adjust the height of the water box according to the actual situation. . 3. If you want to observe the changes in the box during the test, you can turn on the indoor light (LIGHT) switch to know the changes in the interior through the window. 4. If the machine is operated below 0 ℃, try to avoid opening the box door, because when the temperature is low, if the box door is opened, it will easily cause the ice phenomenon of the internal evaporator and other parts, especially the lower the temperature, the more serious the situation. If it must be opened, the door opening time should be shortened as much as possible. 5. When the low temperature operation is completed, it is necessary to set the temperature condition at 60 ° C to carry out the drying treatment for about half an hour, so as not to affect the measurement time of the next operating condition or the phenomenon of freezing. 6. The radiator (condenser) of the freezer should be regularly maintained and kept clean. 7. The water inlet of the humidification bucket must completely discharge the stored air to prevent water from entering. 8. During operation, unless absolutely necessary, please do not open the door, otherwise it may cause the following undesirable consequences 9. The correct installation of wet gauze can ensure that the correct relative humidity is measured. 10. The refrigeration system should be regularly maintained and cleaned, and the moving parts should be lubricated and lubricated according to the instructions, and the electrical control system should be regularly maintained and inspected. These tasks are indispensable.
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