Today, this article will tell you that it is very simple to repair the high and low temperature test chambers yourself. Just a little knowledge about the electrical appliances and a little patience is enough. Let's start with some basic knowledge.
Why is the heat around the door of the high and low temperature test chamber; (except the dew device)
When the high and low temperature test chamber is turned on, you will find that it is very hot around the door seal of the box. This is because the manufacturer is interested in the design. Because the high and low temperature test chamber is cold during the low temperature test, When the outside temperature is high, there will be "sweat" condensation on the doorway, so the designer will use the gas line at the outlet of the compressor to surround the doorway for a week, and use the heat of the pipe to drive away the water droplets formed by condensation. (This section of the pipeline is referred to as the 'door seal tube', also known as the door seal dew tube).
Inspection of common faults in high and low temperature test chambers 1. Poor cooling: Whether the test sample is placed too much or a hot sample is placed. Whether to open the door frequently or the door seal is not strict. Whether there is a heat source near the direct sunlight or high and low temperature test. Is it poorly ventilated? Check that the ambient temperature is too low and the temperature compensation switch is not turned on.
2, high and low temperature test box can not start sound: under normal ambient temperature conditions (15 ° C -30 ° C), when the high and low temperature test box starts, if the compressor emits a "beep" sound, the compressor stops working for about half a minute, this In this case, the compressor cannot be started because the power supply voltage is too low; if the compressor makes a "beneath" sound, then a "click" sound is heard, because the power supply voltage is too high or the compressor continues to work for too long. The high and low temperature test chambers can work normally when the power supply voltage returns to normal or the compressor casing temperature drops.
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