BETONPARTSDiagnosis sheet · https://betonparts.com/en/faults/cement-silo/rat-hole/
Cement silos and screw conveyors · No cement from the silo
Flow starts, then stops
- Symptom
- Flow starts, then stops
- Likely cause
- Rat-hole: cement flows only in a central channel.
- Check
- The level drops only in the centre.
- Fix
- Aerate the cone; run the silo lower more often.
Manual · Book 2 · § 13.4
Parts you may need
⚠ Every look inside, turn by hand or open step means full lockout first. Never enter a silo or a bin with material in it.
Plant / site
Machine and serial no.
Date
Checked by
Findings and actions
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