The use of high and low temperature impact test chambers and troubleshooting
The high-low temperature impact test box is suitable for the safety performance test of electronic vitality parts to provide reliability test, product screening test, etc. Meanwhile, through this equipment test, the reliability of the product and the quality control of the product can be improved. The high-low temperature impact test box is an essential test equipment for aviation, automobile, household appliances, scientific research and other fields. It evaluates and determines the parameters and performance of products such as electrician, electronics, automotive electrical appliances, and materials after the temperature and impact change of high and low temperature test. Adaptability of use, applicable to schools, factories, military, research positions, and other units .
High-low temperature impact test box common failure and release method
First, in the 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 very slowly, it is necessary to look at the air circulation system and see if the adjustment baffle of the air circulation is normally open. Conversely, check whether the motor operation of the air circulation is normal. If the temperature overshoots badly, then you need to set the PID setting parameters. If the temperature rises directly, over-temperature protection, then the controller fails and the control instrument must be replaced.
Second, in the event of a sudden failure during the test operation, a corresponding fault display prompt appears on the control instrument and there is a voice alert. The operator can quickly check which type of fault belongs to in the troubleshooting chapter of the operation of the equipment, and then the professional can quickly eliminate the fault to ensure the normal operation of the test. Other environmental test equipment will have other phenomena in use, it must be specific phenomena, specific analysis and exclusion. The environmental test equipment shall also be regularly maintained. The condenser of the refrigeration system shall be regularly cleaned. The mobile parts shall be lubricated according to the instructions, and the electrical control system shall be regularly maintained and inspected. These tasks are indispensable.
Third, the low temperature can not reach the test index, then you have to observe the temperature changes, the temperature drop is very slow, or the temperature rises after a certain temperature, the former must check, do low temperature test before After drying in the studio, the test chamber is kept dry and the test sample is placed in the work chamber. The test sample is placed in the work chamber. The test sample in the work chamber is placed too much, so that the air in the work chamber cannot be fully circulated. After eliminating the above reasons, It is necessary to consider whether it is a fault in the refrigeration system. In this case, it is necessary to ask a manufacturer's professional to perform the repair. The latter phenomenon is caused by the poor use environment of the equipment. The ambient temperature of the equipment and the location of the equipment ( the distance between the cabinet and the wall ) must meet the requirements (as specified in the equipment operation instructions ) .
4. In the heat test, the actual humidity will reach 100% or the actual humidity and the target humidity will differ greatly. The value is much lower. The former phenomenon may be caused by dry gauze on the wet-bulb sensor. Then check the wet-bulb sensor. Whether the water in the sink is short of water, the water level in the water tank is automatically controlled by a water level controller. Check if the water supply system of the water level controller is normal and whether the water level controller is working properly. Another possibility is that the wet ball gauze may cause the gauze to become hard due to the long use time or the purity of the water supply, so that the gauze cannot absorb the moisture and dry, and the above phenomenon can be eliminated only by replacing or cleaning the gauze. The latter phenomenon is mainly because the humidification system is not working. Check the water supply system of the humidification system. Check whether there is a certain amount of water in the water supply system. Control whether the water level 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, then check the electrical control system, which requires professional maintenance personnel to perform the repair.
Beijing Hengtai Fengke Test Equipment Co., Ltd. Technical Department
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010-57926052
When an overload occurs, the hydraulic overload protector stops the press immediately in order to protect the press and the die , whilst the oil inside the hydraulic cylinder retums to the oil reservoir . to teset the " overload " the slide is inched to top dead center and the hydraulic overload pump will automatically repressurize the overload protection system and bring the press back to operation ready status . in the event of jamming , the problem can be solved by manually releasing the hydraulic pressure in hydraulic cylinder
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