1、 Daily maintenance
1. Check before startup
Wipe the mixing pot, cutting blade, and parts in contact with materials with 75% alcohol to ensure hygiene standards.
Confirm that the fasteners (bolts, nuts) are not loose, and that the transmission components (bearings, worm gears) rotate smoothly without any jamming.
Verify that the compressed air pressure is stable at 0.6 MPa to avoid pressure fluctuations affecting the granulation effect.
Check the rotation direction and flexibility of the mixing blade and cutting knife, and eliminate abnormal noise.
2. Monitoring during operation
Continuous operation for ≤ 20 hours per day to prevent motor overheating or accelerated component wear.
Real time observation of particle forming status, immediate shutdown for troubleshooting in case of abnormalities (such as uneven particle size and increased noise).
3. Post shutdown processing
Thoroughly remove residual materials from the mixing pot, sieve, and pipeline to avoid blockage after drying.
Disassemble the rotating drum or mixing bowl, clean and store completely dry.
2、 Periodic maintenance
1. Lubrication management
Lubricating grease should be replenished or replaced every six months for the gearbox and bearings, and the oil level should not be lower than the centerline of the dipstick.
The transmission components (worm gear, chain) are coated with high-temperature resistant grease every month, and the chain is cleaned with diesel and then brushed with engine oil.
2. Component inspection and replacement
Monthly: Check the wear of cutting blades and mixing blades, replace deformed/worn parts; Confirm the airtightness of the sealing ring.
Half a year: Replace the motor synchronous belt and adjust the tension; Check the wiring terminals of the distribution box and clean the accumulated dust.
Year: Thoroughly clean the oil stains and powder inside the host; Check electrical components and circuits, replace aging parts.
3、 Safety and operational standards
1. Safe operation
It is strictly prohibited to insert hands or tools into the interior during equipment operation. Power off and hang warning signs before maintenance.
Cables need to be protected with conduit to avoid mechanical damage.
2. Environmental management
The equipment should be stored in a dry and clean environment to avoid moisture and corrosion; Cover with a dust cover after shutdown.
Avoid contact with acidic or corrosive gases.
4、 Cleaning and sterilization (special requirements)
1. Cleaning process
Detachable components (agitator blade, scraper) should be soaked and cleaned with a mild cleaning agent, rinsed with clean water, and then dried.
Focus on cleaning dead corners to prevent residue from causing cross contamination.
2. Sterilization method
Heat resistant components: steam sterilization at 121 ° C for 15-30 minutes, or dry heat sterilization at 180 ° C for ≥ 2 hours.
Non heat-resistant components: Wipe with 75% ethanol or disinfect with ultraviolet radiation.
Note: When changing product batches, continuously producing for more than 3 days, or shutting down beyond the effective cleaning period, thorough cleaning must be performed.
3. Key maintenance principles
Preventive maintenance: Follow the step-by-step plan of "daily → monthly → annual" to reduce the risk of sudden failures.
Record traceability: Fill in detailed maintenance records (such as lubrication time, component replacement details) to ensure operational traceability.
Through systematic maintenance, the lifespan of the equipment can be extended by more than 30%, while ensuring that the particle quality meets GMP standards.