Basic application and maintenance of high and low temperature test boxes
The basic application of high and low temperature test chambers Applicable to industrial products, high temperature, low temperature reliability test. The parts and materials of electronic products, automotive motorcycles, aerospace, marine weapons, universities, research institutes, and other related products are tested under various conditions of high temperature and low temperature (alternative) cyclical changes. The product has a wide range of temperature control, its performance indicators have reached the national standard GB10592-89 high and low temperature test box technical conditions, applicable to GB2423.1, GB2423.2 "electrical and electronic products environmental test test A: low temperature test method, test B: High Temperature Test Method "The product is subjected to low temperature, high temperature test and constant warming test. Products comply with GB2423.1, GB2423.2, GJB150.3, GJB150.4, IEC, MIL standards.
High and low temperature test chamber maintenance
1. Regularly cleaning the evaporator: Due to the different levels of cleanliness of the sample, a small amount of dust and other small particles will be condensed on the evaporator under the action of forced air circulation, and cleaning should be performed regularly.
2. Adhere to the professional management of specialized personnel, and qualified entities should send special personnel to the supplier factory for training and learning from time to time to obtain more professional maintenance and repair experience and capabilities.
3, long-term shutdown when not in use should be regularly every half of the power to the product, power-on time of not less than 1 hour.
4. Recirculation fan and condenser fan cleaning and balance: Similar to the cleaning evaporator, because the working environment of the test box is different, the circulating fan and the condenser fan will gather a lot of small particles such as dust, and should be cleaned regularly.
5. Generally, it is relatively high. We recommend that it be placed in a relatively benign temperature environment. Our experience temperature is 8°C to 23°C. For laboratories that do not have this condition, appropriate air conditioners or cooling towers must be provided.
6, in the high temperature test, if the temperature change does not reach the test temperature value, you can check the electrical system, remove the fault 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.
7. Insist on setting the temperature around the ambient temperature after each test. After about 30 minutes of operation, cut off the power supply and clean the inner wall of the work chamber.
8. It is advisable to carry out the relocation of the equipment under the guidance of technical personnel so as to avoid unnecessary damage or damage to the equipment.
9, water and humidifier cleaning: If the water is not smooth, humidifier scaling easily lead to humidifier dry, may damage the humidifier, so the water must be regularly cleaned with the humidifier.
10. Regularly check the terminal screws and holders. Do not use them loosely.
11. Use a dry cloth to wipe the meter. Do not use alcohol, gasoline, or other organic solvents. Do not spill water on the meter. If the meter is immersed in water, stop using it immediately. Otherwise, there is a risk of leakage, electric shock, or fire.
12. Before the instrument is in operation, before modifying the settings, signal output, starting, stopping, etc., the safety should be fully considered. The wrong operation will cause the working equipment to be damaged or malfunction.
Uv Air Purifier,Uv Air Filter,Air Purifiers With Uv Light,Hepa Air Purifier With Uv Light
Guangdong Zhengshang Electrical Technology Co., Ltd. , https://www.zengsung.com