In the high temperature test of the high and low temperature test chamber, if the temperature change does not reach the test temperature value, the electrical system can be inspected and the faults can be eliminated one by one. If the temperature rises very slowly, it is necessary to check the wind circulation system to see if the regulating baffle of the wind cycle is turned on normally. Otherwise, check the motor of the wind cycle.

Whether the high and low temperature test chambers are operating normally. If the temperature is too high, you need to set the PID setting parameters. If the temperature rises directly and the temperature is over-protected, then the controller fails and the control instrument must be replaced.

If the low temperature test box does not reach the test index, then you should observe the change of temperature. It is the temperature drop of the high and low temperature test chamber is very slow, or the temperature has a rising trend after the temperature reaches a certain value. The former should check it. Whether to dry the working chamber before the low temperature test, keep the studio dry and then put the test sample into the working room and then test it. If the test sample in the working room is placed too much, the wind in the working room cannot be fully circulated. After eliminating the above reasons, it is necessary to consider whether it is a fault in the refrigeration system, so it is necessary to ask the professional of the manufacturer for maintenance. The latter phenomenon of high and low temperature test chamber is caused by poor environment of the equipment. The ambient temperature placed in the high and low temperature test chambers and the position (the distance between the back of the cabinet and the wall) should meet the requirements (in the operation instructions of the equipment) There are regulations).

The high and low temperature test chambers should be regularly maintained, the condensers of the refrigeration system should be cleaned regularly, the moving parts should be lubricated according to the instructions, the electrical control system should be regularly maintained and checked, etc. These tasks are indispensable.

The high and low temperature test chamber is mainly suitable for the reliability test of constant, wet heat exchange of industrial products. As the core component of the high and low temperature test chamber, the compressor will directly affect the performance of the equipment. After years of production and sales experience, the following suggestions are proposed for the maintenance skills of the compressor. I hope to give you a reference.

1. Do not start the high and low temperature test chamber compressor frequently during the use. The interval between the start of the compressor should be more than 15 minutes.

Second, the voltage in the workplace must be stable. If the voltage is unstable, it will cause the current to be too large or too small. If it is operated in this environment for a long time, it will cause great damage to the compressor. It is recommended to use a voltage regulator to connect the high and low temperature. Test box.

Third, to ensure that the working environment is well ventilated and free of dust, to keep the surface of the compressor clean, if the high and low temperature test chamber is not used for a long time, it should be placed in a space as dust-free as possible;

Fourth, the environmental requirements for the use of high and low temperature test chamber equipment:

1. There is no strong electromagnetic radiation source nearby;

2, relative humidity: ≤ 85% RH (to use air conditioning in summer);

3, temperature: 5 ° C ~ 30 ° C (average temperature within 24 hours ≤ 30 ° C);

4. There is proper maintenance space around the equipment.

5, the ground is flat, well ventilated, free of flammable, explosive, corrosive gases and dust;

If the high and low temperature test chamber cannot control the low temperature, what are the repair methods?

1. Check the refrigeration system of the high and low temperature test chambers, and use a professional leak detector or soap and water combination method for testing.

2. If the solenoid valve is found to be damaged, you need to replace this accessory.

3. Add appropriate refrigerant fluid to restore the system to normal operation.

4. Electrical equipment must be inspected by a professional electrician.