What should I do if the high and low temperature test chamber fails?
What should I do if the high and low temperature test chamber fails? Basic troubleshooting method of high and low temperature test chamber: Supermarket Display Shelving,Supermarket Racks,Supermarket Shelves ,Supermarket Display Racks Apache Industry Ltd. , http://www.apachedisplay.com
1. High and low temperature test equipment. In the high temperature test, if the temperature change does not reach the test temperature value, you can check the electrical system and eliminate the fault one by one. If the temperature rises very slowly, you should check the wind circulation system to see if the adjustment baffle of the wind circulation is open normally, otherwise, check the motor of the wind circulation
Is the operation normal? If the temperature overshoot is severe, then the PID setting parameters need to be adjusted. If the temperature rises directly and the over-temperature protection, then the controller fails, the control instrument must be replaced.
2. When the high and low temperature test equipment suddenly fails during the test operation, the corresponding fault display prompt will appear on the control instrument and there will be an audible alarm prompt. The operator can quickly check which type of fault belongs to the chapter of troubleshooting in the operation and use of the device, and then you can ask a professional to quickly troubleshoot to ensure that the test is carried out normally. There will be other phenomena in the use of other environmental test equipment, then specific phenomena, specific analysis and elimination are required. Environmental testing equipment should also be regularly maintained, the condenser of the refrigeration system should be cleaned regularly, the moving parts should be lubricated according to the instructions, and the electrical control system should be regularly maintained and inspected. These tasks are essential.
3. The high and low temperature test instrument can not reach the test index at low temperature, then you have to observe the temperature change, whether the temperature drops slowly, or the temperature has a tendency to rise after the temperature reaches a certain value, the former should check, do low temperature Whether the studio is dried before the test, keep the studio dry, and then put the test samples into the work room for testing, whether the test samples in the work room are placed too much, so that the wind in the work room cannot be fully circulated. After the reason, it is necessary to consider whether it is a fault in the refrigeration system. In this case, professionals from Hongzhan Instrument Manufacturers must be inspected. The latter phenomenon is caused by the poor use environment of the equipment. The ambient temperature of the equipment and the location (the distance between the back of the box and the wall) must meet the requirements (as specified in the equipment operation instructions).
4. In the humidity test of the high and low temperature box, the actual humidity will reach 100% or the actual humidity is very different from the target humidity, and the value is much lower. The former phenomenon: it may be caused by the drying of the gauze on the wet ball sensor. To check whether the water tank of the wet bulb sensor is short of water, the water level in the water tank is automatically controlled by a water level controller, check whether the water supply system of the water level controller is normal, and whether the water level controller works normally. Another possibility is that the wet ball gauze will harden the gauze due to the long use time or the purity of the water supply, so that the gauze can not absorb the water and dry. Just replace or clean the gauze to eliminate the above phenomenon. The latter phenomenon is mainly because the humidification system does not work, check the water supply system of the humidification system, whether there is a certain amount of water in the water supply system, whether the water level control to control the water level of the humidification boiler is normal, and whether the water level in the humidification boiler is normal. If all of the above is normal, then check the electrical control system, which requires professional maintenance personnel to carry out maintenance.