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Cement silos and screw conveyors · No cement from the silo

Valve open, no cement reaches the screw

Open in the diagnosis tool
FILL M SCALE
Symptom
Valve open, no cement reaches the screw
Likely cause
A bridge has formed in the cone.
Check
Tap the cone with a rubber mallet; switch aeration on.
Fix
Aerate; run the vibrator only while the valve is open. Never enter the silo.

Manual · Book 2 · § 13.4 · 7

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⚠ Every look inside, turn by hand or open step means full lockout first. Never enter a silo or a bin with material in it.

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