Operation
6 — 9
05_0007_0507GB
1
2
3
Item
Designation
1
Jammed aggregate
2
Cement paste
3
Boundary layer
The following defects can lead to blockages:
-- The delivery pipe is insufficiently wetted.
-- Transfer tube is leaking.
-- The pipes are not seal-tight.
-- Residual concrete in transfer tube and delivery line.
-- Unfavourable concrete composition.
-- Demixed concrete.
-- Set concrete.
Caution
In the event of blockages, pump the concrete immediately back into
the agitator hopper and mix it. If the delivery cylinder and transfer
tube switch over again automatically without any problems, you can
switch over to forward pumping. Start pumping again carefully.
6.8
Blockages
