1Ultrasonic disperserDaily maintenance: Basic maintenance extends equipment life
Pre-operation preparation
Environmental inspection: Ensure that the equipment is placed on a flat and stable workbench, away from interference sources such as radiation instruments and high-frequency equipment. It is recommended to maintain the ambient temperature at 18 ℃ -28 ℃ and humidity at 30% -60% to avoid short circuits caused by humidity or overheating.
Power management: Use a regulated power supply (220V ± 10%) to ensure that the power cord is not worn or broken, the plug and socket are clean and dry, and to prevent poor contact from causing faults.
Sample preparation: Select appropriate solvents and concentrations based on the properties of the sample, such as particle size and chemical stability, to avoid large particles or agglomerates directly entering the equipment and prevent probe blockage or damage.
Standardized operation
Gentle operation: Avoid excessive force when holding the device handle to prevent mechanical components from loosening or deforming.
Parameter adaptation: Adjust the ultrasonic frequency and power according to the characteristics of the sample. For example, hard particles (such as metal oxides) require high power (above 500W) and low frequency (20kHz), while sensitive samples (such as biological cells) require low power (≤ 200W) and high frequency (40kHz) to avoid overheating or shear damage.
Distributed monitoring: Real time observation of material dispersion status. If clumping or uneven dispersion is found, immediately stop the machine and check the position of the sample container or probe to avoid prolonged ineffective operation.
Clean after operation
External cleaning: Use a soft cloth to wipe the surface of the equipment to remove dust and stains. The screen and control panel should be gently wiped with a microfiber cloth, avoiding the use of cleaning agents containing alcohol or ammonia to prevent damage to the surface coating.
Internal cleaning: When cleaning the sample container, avoid water or impurities from entering the interior of the equipment. If the probe is contaminated, it should be wiped with a special cleaning solution or 75% alcohol. It is strictly prohibited to use organic solvents (such as acetone) to corrode the probe material.
Moisture proof treatment: Keep the equipment dry after work is completed. If it is not used for a long time, cut off the power, clean the equipment, and apply oil to prevent rust (such as the spindle and oil cylinder parts).
2、 Deep maintenance: Regular maintenance improves equipment performance
Mechanical component maintenance
Lubrication and maintenance: Inject oil to the rotating parts such as gears, bearings, and balls of the disperser once a week to prevent overheating or abnormal noise. If component wear is found (such as increased bearing clearance), it needs to be replaced immediately.
Tightening inspection: Check the equipment fasteners (such as screws and nuts) monthly for looseness to prevent vibration from causing component detachment or misalignment.
Transmission system maintenance: Check the AC contactor every six months and conduct a comprehensive overhaul of the equipment every year, including adjusting the tension of the transmission belt and replacing the oil seal, to ensure smooth operation of the mechanical parts.
Electronic component maintenance
Circuit inspection: Regularly check electronic components such as power cords, plugs, buttons, etc. If aging or damage is found, they should be replaced in a timely manner to prevent leakage or short circuits.
Software update: If the device is equipped with a software control system, it is necessary to download and install the latest version in a timely manner, fix known vulnerabilities, and optimize performance (such as automatic calibration of dispersed parameters).
Anti static treatment: When operating in a dry environment, anti-static wristbands or grounding pads can be used to prevent static electricity from damaging electronic components.
Core component calibration and replacement
Probe calibration: Regularly calibrate the probe using standard samples (such as uniformly sized silica suspension) to ensure accurate dispersion. If the deviation of the calibration result exceeds 5%, it is necessary to contact the manufacturer to adjust or replace the probe.
Transducer testing: Check the energy conversion efficiency of ultrasonic transducers every 2 years. If the output power drops by more than 20%, the transducer needs to be replaced to maintain equipment performance.
Sealing ring replacement: According to the frequency of use, replace the equipment sealing ring every 6-12 months to prevent internal corrosion caused by liquid leakage.
3、 Fault prevention and emergency response
Common troubleshooting
Unable to start: Check if the power cord is securely plugged in and if the fuse is blown. If there is no display on the control panel, it may be a circuit board malfunction and professional maintenance needs to be contacted.
Poor dispersion effect: Confirm that the sample particle size is uniform and there is no agglomeration, and check whether the power and frequency settings match the sample characteristics. If the parameters are correct, it may be due to probe wear or transducer aging, and the components need to be replaced.
Abnormal noise: Immediately stop the machine and check if the mechanical components (such as bearings and gears) are loose or damaged, in order to avoid further wear and tear that may cause the equipment to be scrapped.
Emergency response measures
Overheating protection: If the equipment works continuously for more than 1 hour, it will automatically shut down. Wait for 30 minutes for it to cool down before restarting, and improve the ventilation environment (such as adding a cooling fan).
Liquid leakage: Immediately turn off the power, wipe off the liquid on the surface of the equipment, and check if the sealing ring is damaged. If liquid enters the internal circuit, contact the manufacturer for repair and do not disassemble it by yourself.
Data loss: Regularly backup device parameters and calibration records. If data loss occurs due to software failure, backup files can be used for recovery or technical support from the manufacturer can be contacted.
4Ultrasonic disperserLong term storage and handling standards
Storage environment: When the device is not in use for a long time, it should be placed in a dry and dust-proof environment with humidity controlled at ≤ 60%. Desiccants or dehumidifiers can be used to maintain indoor humidity and prevent metal parts from rusting.
Shockproof and fall proof: handle the equipment with care, use special packing boxes and fill cushion materials (such as foam plastics) to prevent the probe or circuit board from being damaged by violent vibration or impact.
Dust cover: When storing, it is necessary to cover the device with a dust cover to prevent dust from entering the interior. If the surface of the equipment is contaminated, it needs to be wiped with a soft cloth before covering.