Problem & answerC-01
Powder Bridging in the Hopper
Likely causes
- Poor powder flowability
- High moisture content
- Fine particle size
- Static electricity
- Inadequate agitation
- Hopper overfilled
How to fix it
- 1Stop the machine.
- 2Break the bridge with an approved tool.
- 3Check powder moisture.
- 4Verify agitator operation; use the hopper vibrator where fitted.
- 5Reduce room humidity if high; use an approved flow aid where permitted.
- 6Refill the hopper evenly and resume, monitoring flow.
It is fixed when
Powder flows continuously without interruption.
Stop it coming back
- Maintain validated room humidity and avoid overfilling the hopper.
Did this solve the problem?