Typical problems encountered in contaminant recovery
| Problem | Possible causes (s) |
| Dirt Recovery | |
| Blocked hoppers | Wrong pattern of hopper discharges for type of wool being scoured |
| Blocled dirt recovery devices | Fibre strainer not operatin |
| Wrong size | |
| High heavy phase discharge | Worn dirt recovery device |
| Wrong size of dirt recovery device | |
| Poor dirt recovery | Untreated discharges from scour |
| Wrong dirt recovery devices | |
| Insufficient flow to dirt recovery devices | |
| Wax Recovery | |
| Poor wax recovery | Untreated discharges |
| Insufficient flow to wax recoery devices | |
| Wrong gravity disc | |
| Incorrect temperature | |
| Wrong nozzle size | |
| Insufficient capacity of recovery device | |
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