Variable Pitch Fan System
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可调风叶角度风扇系统 (1) 电磁阀 (2) 空气泵 (3) 风扇毂 (A) 进气 (B) 高压空气 | |
选装的可调风叶角度风扇系统用转位风扇组件取代标准风扇装置。 空气泵和 24V 电磁阀位于机器的右后侧。 选装的可调风叶角度风扇系统定期更改风扇叶片的倾角以便清除冷却系统中的碎屑。 空气泵 (2) 从发动机进气口吸取过滤后的空气。 空气泵将空气压缩为
风扇叶片会在该位置排出冷却系统的碎屑。 净化操作期间，风扇自动增加至最大转速以使反转气流达到最大。 净化的默认持续时间为 20 秒。 净化结束后，泵和阀将关闭。 在泵关闭时，风扇毂中的压力会通过阀上的排气口排出。 风扇叶片会回到正常位置。 风扇会继续以正常模式工作，直到下一次净化。 两次净化之间的持续时间的默认设置为 20 分钟。 使用电子技师可在 3 分钟至 60 分钟之间调整净化循环间隔。 随后，另一个净化循环将会启动。 也可以使用 Cat ET 调整净化循环的持续时间。
可以通过图形显示屏手动启动净化循环。 选择 "Settings（设置）"- > "Functions（功能）"选项下面的 "Purge（净化）"图标。 净化循环之间的最小时间间隔为 3 分钟。 如果在前一个循环结束后的 3 分钟内启动开关，则净化循环将会延迟，直至经过 3 分钟为止。 手动净化完成后，自动操作将恢复。
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