Why Daily Plastic Grinder Maintenance Matters
Plastic grinders inevitably experience wear and performance decline during prolonged, high-intensity operation. Statistics show that grinders receiving regular maintenance last 3-5 years longer on average and suffer over 60% fewer breakdowns than unmaintained units.
II. Essential Daily Maintenance Checks
1. Pre-Startup Checks:
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Inspect all bolts for tightness, especially grinding disc bolts.
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Verify proper belt/coupling tension.
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Check power cables for damage and ensure secure grounding.
2. During Operation Monitoring:
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Listen for abnormal noises or vibrations.
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Monitor motor temperature (keep below 65°C).
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Watch ammeter for unusual fluctuations (may indicate internal blockage).
3. Post-Shutdown Cleaning:
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Thoroughly clean residual plastic from the grinding chamber.
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Clean screens to prevent clogging.
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Remove dust from motor cooling fins using compressed air.

Regular maintenance cycle for key components
| Component Name |
Maintenance Tasks |
Recommended Interval |
| Cutting Tools/Grinding Discs |
Inspect wear condition; sharpen or replace if necessary |
Every 200-300 hours |
| Bearings |
Lubricate with high-temperature grease |
Every 500 hours |
| Belts |
Check tension and wear condition |
Weekly |
| Screens |
Check for damage and clogging |
Per shift |
| Electrical System |
Inspect terminal connections and contactors |
Monthly |
Common fault warning signals and processing methods
1. Abnormal noise:
Metal collision sound: It is possible that the tool is loose or foreign objects have entered, and the machine should be stopped immediately for inspection
Dull friction sound: Bearings may lack oil or be damaged
2. Decreased production:
Check if the screen mesh is clogged
Confirm if the tool is excessively worn
Check if the feeding speed is uniform
3. Excessive powder temperature:
Reduce the feeding speed
Check if the cooling system is working properly
Confirm if the tool clearance is appropriate