TL;DR
A conveyor jam stops the entire filling line. Identify the jam location and root cause before clearing containers and restarting to prevent immediate recurrence.
What you might see
- conveyor stopped with containers backed up
- jam sensor alarm on HMI
- container tipped or fallen on conveyor
- accumulation table full alarm
Likely causes
Defective container shape or instability causing a tip-over
Container guide misalignment creating a pinch point
Drive motor fault stopping the conveyor belt
Accumulation section full with no downstream clearance
Required tools
- LOTO kit
- Inspection flashlight
- Gloves (for handling broken containers)
Safety first
- Broken glass containers are a serious product safety risk. Any containers from a breakage area must be quarantined and the line section cleaned and inspected before restarting.
- Lock out the conveyor before manually removing jammed containers. Moving conveyors cause severe crush injuries.
Procedure
- 1
Press the local E-stop or hold the drive from the HMI. Do not attempt to remove containers while the conveyor is powered.
Warning: Container conveyors have pinch points and drive hazards. Lock out the conveyor drive before manually removing jammed containers. - 2
Lock out the conveyor drive at the local disconnect.[1]
- 3
Remove jammed containers carefully. Check for broken glass or container damage that could contaminate downstream product.[1]
- 4
Inspect the container guide rails at the jam location for misalignment or wear.
- 5
Check the downstream conveyor or accumulation table for blockages that caused the backup.
- 6
Inspect the drive motor and belt. A burnt smell or tripped overload indicates a motor or drive problem, not just a container issue.
- 7
After clearing the jam, jog the conveyor briefly before starting full production to confirm the path is clear.
Sources
Krones Krones Modulfill / Volumetic Filler / Capper general technical documentation, Krones
Krones Modulfill / Volumetic filler general conveyor jam and material handling procedures (general)
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