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What are the common faults of high and low temperature alternating test chambers?
- 2019-03-11 -

      Common faults and cleaning methods for high and low temperature alternating test chamber

1. In the high temperature experiment, if the temperature change does not reach the experimental temperature value, the electrical system can be viewed and the defects can be removed one by one. If the temperature rises very slowly, it is necessary to check the wind circulation system to see if the conditioning baffle of the wind cycle is open normally. Otherwise, check whether the motor of the wind cycle is running normally. If the temperature overshoot is fierce then you need to set the PID setting parameters. If the temperature rises directly and the temperature is over-protected, then the controller is out of order and needs to be replaced.

2. If the low temperature does not reach the experimental index, then you should investigate the temperature change, whether the temperature drop is very slow, or the temperature has a rising trend after the temperature reaches a certain value. The former should check whether it will be before the low temperature experiment. Dry the studio, keep the studio dry, then put the experimental sample into the working room and then do the experiment. If the experimental sample in the working room is placed too much, the wind in the working room cannot be fully circulated. After removing the above reasons, It is necessary to consider whether it is a problem in the refrigeration system, so it is necessary to ask the professional of the manufacturer for maintenance. The latter phenomenon is caused by the poor operating environment of the equipment. The ambient temperature of the equipment and the orientation (the distance between the back of the cabinet and the wall) must meet the requirements (specified in the operation instructions of the equipment).

3. In the damp heat experiment, the actual humidity will reach 100%. The actual humidity and the policy humidity are very different. The value is much lower. The former phenomenon: perhaps the gauze on the wet ball sensor is caused by boring, then you should check Whether there is water shortage in the sink of the wet bulb sensor, 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 application time or the purity of the water supply, so that the gauze can not absorb the water and is boring, as long as the gauze is replaced or cleaned to remove 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 of the humidification boiler water level is normal, and whether the water level in the humidification boiler is normal. If everything above is normal, then you should check the electrical control system, which should be repaired by professional repair personnel.

4. When the equipment suddenly has a problem during the operation of the experiment, the corresponding appearance of the fault appears on the control surface and there is an audible alarm prompt. The operator can quickly check out which type of faults belong to the fault clearing chapter in the operation and operation of the equipment, and then ask the professional to quickly clear the fault to ensure the normal operation of the experiment. Other environmental experimental equipment will have other phenomena in its application, which requires specific phenomena, specific analysis and removal.

The environmental test equipment should also be regularly protected and maintained. The condenser of the refrigeration system should be cleaned regularly. The moving parts should be cleaned and cleaned according to the instructions. The electrical control system should be regularly protected and viewed. These are the necessary steps to keep the machine in good working order. .


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