马达外壳内的壳体泄油必须通过高壳体泄油口 (L1、L2、L3) 排放到油箱。
对于多个设备的组合，应确保不超过每个设备的相应壳体压力。当设备的泄油口存在压差时，必须更换共用的泄油管路，以使在任何情况下，都不超过所有连接设备的小允许壳体 压力。如果无法做到这点，必要时应铺设单独的泄油管路。
为了获得有利的噪音值，应使用弹性元件分离所有连接管路，并避免在油箱上方安装。
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