Common Faults & Solutions for Oyster Sorting Machines

1. Reduced Sorting Accuracy (Mixed Sizes, Missorts)

Key Causes

• Roller mesh clogging (oyster shell fragments, sediment, common with HDPE Oyster Mesh Bags-raised spat)
• Abnormal roller speed
• Uneven feeding (overloading, e.g., unregulated dumping from Oyster Sorting Tumbler)

Solutions

• Rinse mesh with 200-300psi water; use our anti-clog HDPE mesh brush every 500kg sorted
• Adjust speed: 15-18rpm for 2-5mm spat (from 3mm HDPE bags); 12-15rpm for ≥8cm adults (from tumblers)
• Add our 316 stainless steel guide chute to control feed ≤200kg/hour

2. Roller Jam/Noise (Rough Operation, Grinding Sounds)

Key Causes

• Worn/rusted roller bearings (seawater corrosion, salinity 28-32‰)
• Foreign objects in roller (e.g., Hexagonal Oyster Basket plastic shards, sharp shells)
• Loose/aged motor belt

Solutions

• Replace with our 316 stainless steel waterproof bearings (1000h salt spray resistance); use FDA-grade grease quarterly
• Clean debris; check/replace HDPE anti-scratch liner (matches our oyster mesh bags)
• Tighten belt (1-2cm sag when pressed) or replace with heat-resistant polyurethane belt

3. Discharge Port Blockage (Oyster Pile-Up)

Key Causes

• Poor discharge angle (too small, risky for shelled adults)
• Burrs on SS304 port inner wall (catching shells)
• Unsynchronized downstream gear (e.g., full Hexagonal Oyster Baskets not replaced)

Solutions

• Set angle to 30-45° with our stainless steel angle-adjust bracket
• Sand burrs with 800-grit sandpaper or add our HDPE anti-scratch strip
• Assign 2 operators (1 monitor, 1 change baskets) or add auto-alarm for 80% full baskets

4. Control Panel Malfunction (Unresponsive Buttons, Wrong Displays)

Key Causes

• Moisture in circuits (seawater/cleaning water leakage, high-humidity workshops)
• Faulty sensors (loose wiring for weight/speed sensors)
• Program glitch (parameter loss after power outage)

Solutions

• Power off, blow dry with compressed air; replace with our food-grade silicone seal; use waterproof cover when cleaning
• Reconnect sensor terminals; replace with our corrosion-resistant pressure sensor (±0.1% accuracy)
• Restore factory settings or import backup program via USB (contact tech support)

5. Incomplete Impurity Removal (Residual Sediment/Algae)

Key Causes

• Failed roller cleaning (clogged nozzles, wrong angle)
• Insufficient tumbling (poor water contact, common with Cylinder Oyster Tumbler-harvested adults)
• Low cleaning water temp (<5℃ in winter, high sediment adhesion)

Solutions

• Unclog nozzles with wire, set angle to 45°; use our stainless steel high-pressure nozzle (2x longer life)
• Increase speed by 2-3rpm; add 2-3 HDPE mixing protrusions (no shell scratches)
• Heat water to 10-15℃ with our stainless steel heater in winter

6. Excessive Vibration (Shaking Body, Loose Feet)

Key Causes

• Loose anchor bolts (high-frequency operation, uneven floors)
• Unbalanced roller (uneven mesh wear, internal debris)
• Aged motor shock pads (lost cushioning)

Solutions

• Tighten bolts with torque wrench; use our 316 stainless steel anti-slip bolts; add stainless steel leveling feet for uneven floors
• Clean debris; replace worn mesh sections with our replaceable HDPE roller mesh
• Replace with our oil/seawater-resistant rubber shock pads (≤5mm compression); check elasticity every 6 months