A vibro sifter needs little maintenance, but the screen and seals are consumables and cleaning is critical in pharma and food plants. Use this checklist as a starting point and adapt it to your SOPs.
Always isolate electrical power before dismantling or cleaning the machine.
Before Each Batch
- Inspect the screen for tears, holes, loose mesh or damaged sealing.
- Check that the correct mesh is fitted for the product.
- Check clamps are tight and gaskets seated.
- Confirm outlets are connected to the right containers.
Cleaning Procedure (Product Changeover)
- Run the machine empty briefly to discharge residual material.
- Switch off and isolate power.
- Release clamps and remove the lid, frames and screens.
- Dry-clean loose powder with a vacuum or soft brush.
- Wash contact parts with water or an approved cleaning agent; use soft brushes – never steel wool or carbon steel brushes on stainless steel.
- Rinse thoroughly, especially if chloride-containing cleaners are used.
- Dry all parts completely.
- Inspect the screen again, reassemble with gaskets and clamps.
- Record cleaning as required by your SOP.
Weekly / Monthly Checks
- Gaskets – replace if hardened, cracked or flattened.
- Springs – check for cracks or uneven height.
- Fasteners and motor mounting – check tightness.
- Motor – listen for unusual noise; check cable glands and earthing.
- Clamps – check for wear.
Troubleshooting
| Problem | Likely cause | Action |
|---|---|---|
| Low output | Screen blinding, overfeeding, wrong weight setting | Clean screen, reduce feed, adjust weights |
| Oversize in fines | Torn screen or poor sealing | Replace screen / gasket |
| Excess noise | Loose clamp, fastener or worn spring | Tighten, replace springs |
| Machine walking on floor | Uneven floor, unlocked castors | Level and lock castors |
Need spare screens or gaskets? Contact us with your model and mesh.
Frequently Asked Questions
How often should vibro sifter screens be replaced?
Replace whenever inspection shows tears, loose mesh or damaged sealing. Life depends on material abrasiveness and handling.
Can I use steel wool to clean the sifter?
No. Steel wool and carbon steel brushes can damage stainless steel and cause rust spots. Use soft brushes.
