And then there is the pipe. If we find a place blocked, for example, the recycling pipe is not recycled, then we can pull out the recycling pipe directly:



If the blockage is very serious, we have to check which section is blocked, because the recycling pipe is also divided into several sections, so are all the pipes, whether it is the ink supply pipe or the recycling pipe. If it is blocked, we have to check it section by section, first determine the small direction, which side is easy to block.
Especially for the recovery part, it is necessary to determine whether the recovered iron crutch is blocked or the recovery pipeline is blocked:


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At the beginning, our direction was also wrong, because at the beginning of blowing from this side, all pipes were unblocked:

