Daily Maintenance: Foundation for Stable Operation
Cleaning Critical Components
After daily operation, thoroughly remove residual plastic debris from the grinding chamber to prevent material accumulation from affecting blade rotation. Focus cleaning on screen mesh pores to avoid clogging that causes uneven material discharge. It is recommended to use a combination of air gun blowing and soft brush cleaning. Strictly avoid using water directly to wash motor components as this can cause electrical failure and corrosion.
Lubrication System Maintenance
Bearings and transmission gears require weekly injection of high-temperature resistant lithium-based grease. Before adding fresh grease, remove old grease residue. Observe oil seals for leakage and replace seal components immediately if oil stains are detected. New equipment models often feature automatic lubrication devices that require regular inspection of oil passage patency to ensure consistent lubricant delivery to all critical points.
Blade Condition Monitoring
Before startup, run the machine idle for 30 seconds and use sound to determine whether blades are balanced. After every 8 hours of processing, use calipers to measure blade edge thickness. When wear exceeds 0.5mm, promptly adjust blade angle. It is recommended to maintain two sets of cutting tools for rotation use, preventing continuous operation from causing metal fatigue that leads to premature blade failure or catastrophic breakage.
Regular Deep Maintenance: Preventing Major Failures
Monthly Inspection Checklist
Disassemble and inspect spindle concentricity with error tolerance below 0.02mm. Calibrate the gap between moving blade and fixed blade, typically maintaining 0.1 to 0.3mm clearance depending on material type and desired particle size. Test motor insulation resistance value which should not fall below 5 megohms. Clean cooling fan dust accumulation to prevent motor overheating during extended operation.
Annual Overhaul Key Points
Replace reducer gear oil using ISO VG220 specification lubricant. Conduct comprehensive inspection of PLC control system wiring and functionality. Apply anti-rust treatment to the machine body structure. Focus on checking the tightness of foundation anchor bolts to prevent resonance from damaging equipment structure and causing gradual misalignment of critical rotating components.
Operating Restrictions and Precautions
Strictly avoid overloading: material feed rate must not exceed 110 percent of rated production capacity. When processing heat-sensitive materials such as PVC, monitor temperature rise which should be maintained at 65 degrees Celsius or below to prevent material degradation and equipment damage.
Power-off operation protocol: during cleaning or maintenance, always disconnect the main power supply and display warning signage to prevent accidental startup. Environmental management requirements: maintain workshop humidity below 70 percent to prevent metal component rust. Install magnetic separation devices to prevent ferrous metal contamination from entering the grinding chamber and damaging blades or causing spark hazards.
Maintenance Benefit Analysis
Equipment following standardized maintenance procedures can reduce failure rates by over 60 percent. A typical case study at a PET bottle flake processing plant showed that establishing a maintenance log system increased grinder continuous operating cycles from 400 hours to 1,500 hours. Energy consumption per ton decreased by 18 percent. Equipment lifecycle can be extended by 3 to 5 years, with average annual maintenance cost savings exceeding 20,000 yuan. These results demonstrate that systematic maintenance is not an expense but a strategic investment in production reliability and cost efficiency.
