When using the rotary chain cutter, it is recommended to proceed as follows [FI-KEG]:

• Loose deposits are to be flushed out in advance.

• Working in one location involves the risk of scouring the pipe.

• Carefully select the appropriate chain lengths. The chains should brush past, but should not touch, and on no account hit the pipe wall.

• After each use, the rotary chain cutter is to be visually inspected to find possible damage. Defects are to be corrected immediately. Chain parts of irregular lengths must be replaced, since the resulting imbalance might destroy the rotary chain cutter and damage the sewer.