【单选题】【消耗次数：1】
关于空气净化设备管理不正确的是
①
新风机组粗效滤网宜每7d清洁一次；粗效过滤器宜1月～ 2月更换一次；中效过滤器宜每周检查，3个月更换一次；
②
亚高效过滤器宜每年更换。发现污染和堵塞及时更换。末端高效过滤器宜每年检查一次，当阻力超过设计初阻力160Pa或已经使用3年以上时宜更换。
③
排风机组中的中效过滤器宜每年更换，发现污染和堵塞及时更换。
④
定期检查回风口过滤网，宜每周清洁一次，每年更换一次。 如遇特殊污染，及时更换，并用消毒剂擦拭回风口内表面
⑤
设专门维护管理人员，遵循设备的使用说明进行保养与维护；并制定运行手册，有检查和记录。
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