23
Replace rotating valve seals
Replace the rotating valve seals when they are damaged or worn out.
1)
Remove the two big bag adapters by removing the 8 bolts.
2)
Remove the two bolts of the drive motor plate that is fixed to the body of the dust hopper. Now it is
possible to rotate the rotating valves by rotating the drive motor with drive motor plate for more than
180°. (see figure below).
3)
Pull out the main plug and remove the bolts and clamp strip of the rotating valve blade.
4)
Place the new blade and clamp strip and bolts. Apply Loctite 243 on the bolts. First tighten the two
inside bolts, than tighten the two outside bolts. Make sure that the seal is in one line with the valve
housing and check that the seal has a minimum clearance with the valve housing.
