| 摘要 |
The remover installed on a sewer screen is controlled to move right and left to increase the screening efficiency. The screen is constructed to filter the sewage at a sewage treatment works or at a drainage pump plant. The direction of the remover movement on screen is changed in forward or reverse direction according to the direction switch of driving relay of the motor.The remover comprises a driving motor, a forward direction driving relay, and a reverse direction driving relay.
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