Unverified85% confidenceCautionTime unknown
不建议用高压除尘炮直接近距离吹带风扇的电脑显卡/CPU风扇——高速气流会带动扇叶超速旋转产生反向电压损坏供电电路，应先固定扇叶再吹
1
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85%
Confidence
Long-term
Relevance
-
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Unverified不建议用气罐除尘器清洁笔记本散热风扇时让风扇高速空转，高压气流会使风扇转速远超设计上限导致轴承损坏或产生反向电流损坏主板，应先用手指或工具卡住扇叶再吹83% similarUnverified机箱本身进风位无防尘网时不建议只堆进风扇形成强正压，会加速内部积灰；应先加装磁吸防尘网再升级风扇73% similarUnverified遇到风扇不转、异响、风量变小需分场景处理：转速下降多为电机绕组老化或轴承缺油，可先加缝纫机油润滑轴承；完全不转多为电容失效，更换启动电容通常即可修复而非换整个电机72% similarUnverified静压与风量不可兼得：同尺寸同转速下，高静压扇（叶片密、间隙小）风量偏低，高风量扇（叶片疏）静压低，无鳍片阻挡的纯机箱风道用风量扇即可68% similarUnverified涡轮无线除尘炮无油无水但风力衰减快；压缩气罐（罐装除尘气）风力猛但含推进剂液体，倒置或长时间喷会喷出低温液体导致设备结霜结露67% similar
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