How to solve the common faults of high and low temperature test chamber

The high and low temperature test box shall be maintained regularly, the condenser of refrigeration system shall be cleaned regularly, and the moving parts shall be lubricated according to the instructions, and the electrical control system shall be regularly maintained and inspected, etc. these work is necessary.

In addition, the common faults of high and low temperature wet heat test chamber are as follows:

1. When the high and low temperature test box suddenly fails during the test operation, corresponding fault display prompt and sound alarm prompt will appear on the control instrument. The operator can quickly check which type of fault belongs to in the chapter of troubleshooting in the operation and use of the equipment, and then ask the professional personnel to quickly eliminate the fault to ensure the normal operation of the test. Other environmental test equipment will have other phenomena in use, so it is necessary to analyze and eliminate the specific phenomena. In high temperature test, if the temperature change fails to reach the test temperature value, the electrical system can be checked and the faults can be eliminated one by one. If the temperature rises slowly, check the air circulation system, and check whether the regulating baffle of the lower air circulation is open normally, otherwise, check whether the motor of the air circulation is running normally. If the temperature is too strong, the setting parameters of PID need to be set. If the temperature rises directly and the over temperature protection is over temperature, if the controller fails, the control instrument must be replaced.

2. High and low temperature test chamber In the wet and hot test, the actual humidity will reach 100% or the difference between the actual humidity and the target humidity is very big, and the value is much lower. The former phenomenon: it may be caused by the drying of gauze on the wet ball sensor. Then check whether the water in the water tank of the wet ball sensor is short of water, and the water level in the water tank is controlled automatically by a water level controller. Check whether the water supply system of the water level controller is provided Whether the water level controller works normally. Another possibility is that wet ball gauze will be hard because of its long use time or water quality purity, which will make the gauze dry because it can not absorb water. The above phenomena can be eliminated by replacing or cleaning the gauze. The latter is mainly because the humidification system does not work. Check the water supply system of humidification system, whether there is certain water quantity in the water supply system, whether the water level control of the humidifying boiler water level is normal, and whether the water level in the humidifying boiler is normal. If all of the above is normal, check the electrical control system, which requires professional maintenance personnel to carry out maintenance.

3. High and low temperature test chamber If the temperature does not reach the test index, you should observe the temperature change. Whether the temperature drops slowly or the temperature rises after the temperature reaches a certain value. The former needs to check whether the workshop is dried before the low temperature test, and then put the test sample into the studio and then do the test. Whether the test samples in the studio are too much, Make the wind in the workshop unable to circulate sufficiently. After eliminating the above reasons, it is necessary to consider whether it is a fault in the refrigeration system, so the professional personnel of the manufacturer shall be invited to carry out maintenance. The latter is caused by the poor use environment of the equipment. The ambient temperature and the position (distance between the back of the box and the wall) shall meet the requirements (specified in the operation and use instructions of the equipment).