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4. Release the hose coupling of the upper and lower air hoses on the
machine.
5. Rinse the hoses thoroughly with water.
6. Visually check the upper and lower air connection on the mixing and
feed hopper and clean them.
7. Visually check the check valves and clean them thoroughly with water.
➢ Loosen heavy soiling with a pointy object and then rinse with plenty
of water.
8. After cleaning, reconnect upper air and lower air hoses (1) and (2).
➢ Ensure that the air hoses are installed correctly. Connect the top
air hose to the top air of the mixing and delivery vessel and the
machine's upper air connection. Connect the lower air hose to the
vessel outlet and the lower air connection of the machine.
8.5.4 Cleaning the delivery hoses
Risk of injury due to pressurized components.
The delivery hoses are under pressure and opening the hose couplings
can cause severe injuries.
− Before opening, stop the machine and ensure that the delivery hoses
are depressurized.
− Wear safety goggles. Residual pressures cause the conveyed material
to be discharged at an accelerated rate when the hose couplings are
opened.
− If conveyed material gets into the eyes, wash them out thoroughly and
consult a doctor immediately.
When cleaning the mixing and delivery vessel, the delivery hoses are
already freed from the coarsest contamination by the air flow.
➢ Proper cleaning must be carried out without fail, as otherwise blockages
in the delivery hoses may occur.
1. Loosen the hose coupling at the vessel outlet.
2. Insert a wet sponge rubber ball into the delivery hose.
3. Reconnect the delivery hose to the vessel outlet.
4. Fill the mixing and delivery vessel with water.
5. Close the dome cover (see Section 7.7.2).
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