High and low temperature test chamber use and maintenance methods

Hongzhan high and low temperature test chamber use and maintenance methods

It is suitable for high and low temperature reliability tests of industrial products. For the components and materials of electronic products, automobile motorcycles, aerospace, marine weapons, colleges and universities, scientific research units and other related products under high and low temperature (alternating) cycle changes, check each performance index. Produce

Hongzhan high and low temperature test chambers are used. During the process of use, there are many precautions and frequent maintenance, which can extend the service life of the test chamber.

1. Before testing, be sure to check that the water level of the accumulator is not too high or too small. Allowing the water to overflow the accumulator or being too low will cause the wet bulb test cloth to absorb water abnormally, affecting the accuracy of the wet bulb. Keep the water level approximately six points full. The water level of the water tube can be adjusted to adjust the height of the water box. You need to check and add water almost every two or three tests. You can look at the water pipe in front to make up the water. If not, the machine will alarm and stop working.

2 The high and low temperature test box is equipped with a test hole on the side of the machine, which can be used when it is connected to the test line in the box.

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 internal changes through the window.

4 When the high and low temperature test box is operated below 0 ℃, try to avoid opening the door, because when the temperature is low, if the door is opened, it will easily cause the ice sealing phenomenon of the internal evaporator and other parts, especially the lower the temperature, the worse 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 ℃ and perform the drying treatment for about half an hour, so as not to affect the measurement time of the next operating conditions or the phenomenon of freezing. 6 The radiator (condenser) of the freezer should be regularly maintained and kept clean.

7 The humidification barrel enters the water pipe, and the stored air must be completely discharged 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:

-It is very dangerous for high temperature moisture to rush out of the box.

-The inside of the door is still holding high temperature to cause injury.

-High-temperature air may trigger a fire alarm and cause a malfunction.

9 Please note that the high and low temperature test chamber must be grounded safely and securely to avoid static induction.

10 Avoid turning off and on the freezing unit within three minutes.

11 If the heating sample is placed in the high and low temperature test box, please use the external power supply for the sample power control, and do not directly use the power supply of the machine.

12 circuit breaker, temperature over temperature protector, provide the test product of this machine to protect the safety of the operator, so please check it regularly.

13. The correct installation of wet gauze can ensure that the correct relative humidity is measured.

14. It is absolutely forbidden to test explosive, flammable and highly corrosive substances.

15. Please read the controller manual and related manuals carefully before operating the high and low temperature test chamber. Hongzhan high and low temperature test chamber

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