The maintenance of the blowdown and capture device is key to ensuring equipment performance, extending its service life, and ensuring the accuracy of experimental results. The following is a detailed maintenance guide:
1、 Daily maintenance
1. Appearance inspection: Check the appearance of the equipment daily to confirm that there are no signs of air leakage, water leakage, or corrosion. Focus on inspecting pipeline interfaces, valves, capture pipes, and other parts.
2. Functional testing: Before starting up, confirm that the power and gas supply are normal, and check whether the gas pressure is within the required range of the equipment. Before operation, conduct a no-load test to observe whether the equipment starts normally and whether the parameter display is stable.
3. Cleaning and dust prevention: Regularly wipe the surface of the equipment to remove dust and stains, and prevent impurities from entering the pipelines or electrical components. Clean the collection pipes, filters, and other areas that are prone to particle accumulation every week to avoid blockages that may affect the airflow.
2、 Regular maintenance
1. Replace vulnerable parts: Check the adsorption effect of the capture pipe every 13 months according to the frequency of use. If there is penetration, it should be replaced in a timely manner. Regularly inspect aging components such as rubber seals and valve gaskets, and replace them immediately if hardening or deformation is found.
2. Check the pipeline: Check the blowing pipeline and nozzle monthly, remove blockages, and use specialized dredging tools or ultrasonic cleaning. Conduct a corrosion inspection on metal pipelines, and if they come into contact with corrosive gases, apply protective coatings or replace pipelines with corrosion-resistant materials.
3. Calibrate sensors: Calibrate pressure sensors and flow sensors every six months to ensure accurate measurement data. Check the insulation of electrical circuits to avoid leakage or short circuits.
3、 Special maintenance of key components
1. Capture system: After use, the capture tube should be promptly desorbed at high temperature or purged with inert gas to prevent residual substances from solidifying. When not in use for a long time, the capture pipe should be disassembled, sealed, and stored to prevent moisture or contamination.
2. Temperature control system: Check the temperature uniformity of the heating module, regularly calibrate the temperature control sensor, and control the error within ± 5 ℃. Clean the carbonization residue inside the heating chamber to avoid affecting the heat transfer efficiency.
3. Mechanical components: Regularly lubricate mechanical components such as sampling rotors and compensation rotors to reduce wear. Check the smooth operation of power components such as cylinders and motors, and shut down for maintenance if there is any abnormal noise.
4、 Operating standards and safety controls
1. Standardized process: Before operation, it is necessary to check the sealing of sample bottles and pipeline connections to avoid leakage of volatile components. Strictly operate within the parameter range set by the equipment and prohibit operations beyond the limit.
2. Safety precautions: Wear corrosion-resistant gloves and goggles during operation, especially when handling chemical solvents or toxic samples. Regularly check the gas alarm device to ensure that emergency functions are functioning properly.
3. Shutdown management: Before long-term shutdown, it is necessary to thoroughly clean the equipment and cut off the gas and power sources to avoid pipeline aging or corrosion. When restarting, low load preheating operation is required to confirm that all components are normal before putting them into use.
5、 Environment and Record Management
1. Environmental control: The equipment should be placed on a stable table, away from vibration sources and strong magnetic fields. It is recommended to control the laboratory temperature at 20-25 ℃ and humidity at ≤ 60%.
2. Record management: Establish detailed maintenance logs to record the time, content, replacement parts, and operators of each maintenance. Regularly analyze fault data and optimize maintenance cycles.