济南的夏季高温潮湿、冬季寒冷干燥，这种气候特点对通风管道系统的稳定性提出了较高要求。在日常使用中，通风管道可能出现一些小故障，用户掌握基础排查与处理方法，既能保障系统持续运行，又能避免小问题演变成大维修。

　　Jinan's climate characteristics of high temperature and humidity in summer and cold and dry in winter place high demands on the stability of ventilation duct systems. In daily use, there may be some minor malfunctions in ventilation ducts. By mastering basic troubleshooting and handling methods, users can ensure the continuous operation of the system and avoid small problems from escalating into major repairs.

　　异常噪音的排查与处理

　　Troubleshooting and Handling of Abnormal Noise

　　通风管道运行时若出现“嗡嗡”共振声，首先检查固定支架是否松动。济南地区因温差变化大，金属热胀冷缩易导致吊杆螺丝移位，只需用扳手紧固即可消除异响。若听见“嘶嘶”漏气声，可用肥皂水涂抹法兰连接处，气泡产生位置即为漏风点，此时需关闭系统，对缝隙处加装密封胶条或重新拧紧螺栓。对于风阀叶片开合产生的“咔嗒”声，可滴入少量润滑油保养轴件，但需注意勿使用酸性油脂腐蚀金属部件。

　　If there is a "buzzing" resonance sound during the operation of the ventilation duct, first check whether the fixed bracket is loose. Due to the large temperature difference in the Jinan area, metal thermal expansion and contraction can easily cause the suspension rod screws to shift. Simply tighten with a wrench to eliminate the abnormal noise. If you hear a hissing sound of air leakage, you can apply soapy water to the flange connection. The location where bubbles are generated is the air leakage point. At this time, the system needs to be shut down, and sealing strips should be added to the gaps or bolts should be tightened again. For the "click" sound generated by the opening and closing of the air valve blades, a small amount of lubricating oil can be dripped to maintain the shaft components, but care should be taken not to use acidic grease to corrode metal parts.

　　风量衰减的应急处理

　　Emergency response to air volume attenuation

　　当发现送风/排风效果明显减弱时，先检查过滤网是否积尘。济南春季的杨柳絮、冬季的雾霾颗粒易堵塞滤网，用软毛刷清理后恢复通风量。若风管弯头处风速降低，可能是内部积灰导致，可拆卸检修口用吸尘器清理，注意勿损伤镀锌层。对于软连接帆布破损造成的漏风，可用铝箔胶带临时修补，后续再更换标准配件。

　　When the air supply/exhaust effect is significantly reduced, first check whether the filter screen has accumulated dust. The willow catkins in spring and haze particles in winter in Jinan are prone to clogging the filter screen. After cleaning with a soft bristled brush, restore ventilation. If the wind speed at the bend of the air duct decreases, it may be caused by internal dust accumulation. The removable inspection port can be cleaned with a vacuum cleaner, and care should be taken not to damage the galvanized layer. For air leakage caused by damage to the soft connection canvas, aluminum foil tape can be used for temporary repair, and standard accessories can be replaced later.

　　冷凝水问题的季节性应对

　　Seasonal response to condensate water issues

　　在济南的梅雨季节，通风管道内外温差大易产生冷凝水。发现保温层破损时，可用B1级橡塑保温管对裸露部位进行包裹，接缝处用胶水粘合。若排水不畅导致吊顶渗水，需检查接水盘是否堵塞，用细铁丝疏通排水孔，并调整坡度确保冷凝水顺畅排出。对于蒸发器结霜现象，可先用吹风机低温档融化冰层，再联系专业人员检修制冷系统。

　　During the rainy season in Jinan, there is a large temperature difference between the inside and outside of ventilation ducts, which can easily produce condensation water. When the insulation layer is found to be damaged, B1 grade rubber insulation pipes can be used to wrap the exposed parts, and the joints should be glued together. If poor drainage leads to water leakage from the ceiling, it is necessary to check whether the water tray is blocked, use fine wire to clear the drainage hole, and adjust the slope to ensure smooth discharge of condensed water. For the phenomenon of frosting on the evaporator, you can first use a low temperature blower to melt the ice layer, and then contact a professional to inspect the refrigeration system.

　　振动传递的消减技巧

　　Techniques for reducing vibration transmission

　　风机运转产生的振动可能通过风管传递至室内，在支架与结构连接处加装3-5mm橡胶减震垫，可降低70%以上的传导噪音。对于柔性短管老化开裂问题，可用喉箍固定新软接临时替代，但需注意长度不超过200mm，避免影响气流组织。若发现风管穿墙处振动，可用聚氨酯发泡剂填充缝隙，既密封又减震。

　　The vibration generated by the operation of the fan may be transmitted indoors through the air duct. Installing 3-5mm rubber shock absorbers at the connection between the bracket and the structure can reduce more than 70% of the conducted noise. For the problem of aging and cracking of flexible short tubes, a new flexible joint can be temporarily replaced with a throat clamp, but it should be noted that the length should not exceed 200mm to avoid affecting the airflow organization. If vibration is found at the point where the air duct passes through the wall, polyurethane foam can be used to fill the gap, which is both sealed and shock-absorbing.

　　日常维护要点

　　Key points of daily maintenance

　　建议用户建立季度巡检制度：春季重点清理新风入口防虫网，夏季检查保温层完整性，秋季测试风阀启闭灵活性，冬季确认电伴热带工作正常。每次使用后用湿布擦拭风口，避免油污积累。对于商业场所，可加装压差开关实时监测风阻，当数值超过初始值30%时启动预警，及时安排清洗。

　　It is recommended that users establish a quarterly inspection system: focus on cleaning the insect proof net at the fresh air inlet in spring, check the integrity of the insulation layer in summer, test the flexibility of the air valve opening and closing in autumn, and confirm the normal operation of the electric heat tracing belt in winter. Wipe the air vent with a damp cloth after each use to avoid oil accumulation. For commercial premises, a pressure differential switch can be installed to monitor wind resistance in real time. When the value exceeds 30% of the initial value, a warning will be triggered and cleaning will be arranged in a timely manner.

　　掌握这些基础维护技能，用户能解决80%以上的通风管道常见问题。对于涉及电路改造、系统调试等专业操作，仍需联系具备资质的工程人员处理，确保安全运行。

　　By mastering these basic maintenance skills, users can solve over 80% of common ventilation duct problems. For professional operations involving circuit modification, system debugging, etc., it is still necessary to contact qualified engineering personnel to ensure safe operation.

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