Conveyor Construction Levels
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The document describes different environments and construction requirements for conveyor systems. It outlines four levels of environments - dry, wipe-down, wash-down, and three levels of sanitary environments. The higher the environment level, the higher the moisture, use of cleaning chemicals, and bacteria risks. Accordingly, construction requirements become more stringent with materials changing from mild steel to stainless steel and seals and joints requiring continuous welds to prevent moisture and chemical intrusion. Electrical enclosures and components also become more corrosion resistant at higher environment levels.
Conveyor Construction Levels
- 1. Conveyor Construction Levels* Sanitary Wipe-Down * Wash-Down
- 2. Dry Environment Construction Dry Environment • Minimal or no-moisture • No corrosive cleaning chemicals • Low humidity
- 3. Dry Environment Environment: Minimal/No Moisture Cleaning: Dry Wipe Down or Air Blow-off Construction: Mild Steel, Coated Bolted, Stitch Welds Open Top Frame Electrical: Components: Nema 12 Mild Steel UHMW Guide Rail Formed Angle, Pedestal Support Enclosures Painted Housing, Steel Insert Bearings, Standard Lube Painted Motors Painted Reducers, Standard Lube
- 4. Wipe-Down Environment Construction Wipe-Down Environment • Minimal or no-moisture • Low humidity • No corrosive cleaning chemicals
- 5. Wipe-Down Environment Environment: Low Moisture/No use of Corrosive Chemicals Cleaning: Manual Wipe Down, Mild Detergents, No High Spray Hoses Construction: Stainless Steel, Polished Bolted, Stitch Welds Open Top Frame Components: UHMW Guide Rail Electrical: Formed Angle, Pedestal, Square Tube Support Nema 4 Stainless Steel Painted Housing, Steel Insert Bearings, Standard Lube Enclosures Painted Motors Painted Reducers, Standard Lube
- 6. Wash-Down Environment Construction Wash-Down Environment • Moderate to heavy moisture • Limited corrosive cleaning chemicals • Base wash-down level • Low pressure wash
- 7. Base Wash-Down Environment Environment: Moderate to High Moisture, Moderate use of Corrosive Chemicals Cleaning: Low Pressure Hose Wash Construction: Stainless Steel, Polished Bolted, Stitch Welds Open or Closed Top Frame Components: UHMW Guide Rail Electrical: Formed Angle, Sanitary Channel, Square Tube Support Nema 4X Stainless Steel Polymer Housing, Plated Insert Bearings, Food Grade Enclosures Lube White Epoxy Motors Corrosion Resistant Reducers, Food Grade Lube
- 8. Sanitary Level I Environment Construction Sanitary Level I Environment • Moderate to heavy moisture • Corrosive cleaning chemicals • High pressure wash
- 9. Sanitary Level I Environment Environment: High Moisture, High use of Corrosive Chemicals Cleaning: High Pressure Hose Wash Construction: Stainless Steel, Polished Bolted, Continuous Non-Pitted Welds Open or Closed Top Frame Components: Electrical: UHMW Flat Bar or Stainless Steel Guide Rail Nema 4X Stainless Steel Sanitary Channel, Square Tube Support Enclosures Polymer Housing, Stainless Steel insert Bearings, Food Grade Lube Stand-offs: White Epoxy Motors Bolted Stand-offs Corrosion Resistant Reducers, Food Grade Lube
- 10. Sanitary Level II Environment Construction Caustic Wash-Down Environment • High moisture • High humidity • Aggressive cleaning chemicals and processes • Contain Bacteria Risk
- 11. Sanitary Level II Environment Environment: High Moisture, High use of Corrosive Chemicals to minimize Risk of Bacterial Growth Cleaning: High Pressure Hose Wash, CIP and COP procedures Construction: Stainless Steel, Bead Blast Welded with Continuous Non- Pitted Welds Open Top Frame Components: Electrical: UHMW Flat Bar or Stainless Steel Guide Rail Nema 4X Stainless Steel Sanitary Channel, Square Tube Support Enclosures Polymer Housing, Stainless Steel insert Bearings, Food Grade Lube Stand-offs: Stainless Steel Motors Welded Stand-offs Stainless Steel Reducers, Food Grade Lube
- 12. Sanitary Level III Environment Construction Caustic Wash-Down Environment • High moisture • High humidity • Constant corrosive cleaning chemicals • Contain Bacteria Risk
- 13. Sanitary Level III Environment Environment: High Moisture, High use of Corrosive Chemicals to minimize Risk of Bacterial Growth Cleaning: High Pressure Hose Wash, CIP and COP procedures Construction: Stainless Steel, Bead Blast Welded with Continuous Non Components: Pitted Welds UHMW Flat Bar or Stainless Steel Guide Rail Tube Frame Square Tube Support Polymer Housing, Stainless Steel insert Electrical: Bearings, Food Grade Lube Stainless Steel Motors Nema 4X Stainless Steel Stainless Steel Reducers, Food Grade Lube Enclosures
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