1. In doing damp heat test, the emergence of the actual humidity will reach 100% or actual humidity and the target humidity vary greatly, a lot of low value, the former phenomenon: It may be gauze wet bulb sensor caused by dry, wet it would have to check Sink the ball sensor whether water, the water level in the tank is automatically controlled by a water level controller, the pipeline groove check whether the water level controller water system if the normal water level controller is working properly. Another possibility is the use of wet autumn gauze long time, or the quality of water purity reasons, gauze will harden, so can not absorb moisture and dry gauze, if you replace or clean gauze to eliminate the above phenomenon. The latter phenomenon is the humidification system is not working, view the humidification system, water supply system, if there is a certain amount of water inside the water supply systems, boiler water level control humidification level control is normal, if normal water level inside the humidifier. Magnetic pump as above normal, it would have to check the electrical control system, but also to please the professional service personnel.
2. In the high_temperature tests, such as temperature changes reach the test temperature, you can check the electrical system, one by one to troubleshoot. As the temperature rises very slowly, it is necessary to view the air circulation system, look at the wind circulation damper is open normally, otherwise, it is necessary to check the motor running air circulation is normal. Sewage pump as temperature overshoot badly then you need to set the parameters tuning PID. If the temperature rises directly, over‐temperature protection, then the controller fails, replace the control instrument.
3. The low temperature reach indicator test, then you have to observe the change in temperature, the temperature drop is very slow, or the temperature to a certain value temperature tends to increase, the former is necessary to check, whether the money will do the low temperature test Studios drying, the studio will remain dry before the test sample into the studio to do the test, the test sample too much work if placed indoors, chemical pumps so that indoor air can not fully cycle, after the exclusion of the above reasons , we must consider whether the refrigeration system broke down, so we must ask the manufacturer for repair professionals. The latter phenomenon is due to poor use of environmental equipment, the device is placed in the ambient temperature, place the position (distance from the wall after the box) to meet the requirements (in the manual operation of the test device has specified)
4. Device sudden failure during the test operation, the control corresponding fault appears on the instrument display and a voice prompt alarm. The operator can control the operation of equipment used in the troubleshooting chapter quickly check which type fault, you can ask professionals quickly troubleshoot to ensure proper conduct tests. Other environmental testing equipment in use, there will be other phenomena, it should be specific phenomenon, detailed analysis and troubleshooting.
Environmental testing equipment but also regular maintenance condensers, cooling system cleaned regularly, shall be specified for lubrication of moving parts, electrical control systems periodic maintenance inspection, the work is essential.
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