Correct maintenance method for osmotic pressure gauge (core points)
Proper daily maintenance can significantly reduce the occurrence rate of malfunctions, extend the service life of instruments, and reduce maintenance costs. Maintenance should follow the principles of "regular cleaning, regular calibration, standardized storage, and timely maintenance". The specific operations are as follows:
（1） Daily cleaning (after daily use)
Cleaning of sample contact area: Use specialized cleaning solution (selected according to the instrument manual) to gently wipe the probe, sample cell, and guide hole, remove residual samples and reagents, and avoid sample drying and clogging of the probe or corrosion of parts; After cleaning, rinse with distilled water and dry with a dust-free cloth to avoid water stains.
Instrument surface cleaning: Use a clean dust-free cloth to wipe the instrument housing and operation panel, remove dust and stains, and prevent dust from entering the interior of the instrument, affecting the normal operation of the circuit or optical path; Do not use corrosive cleaning agents (such as alcohol, acetone) to wipe the operation panel to prevent damage to the display screen or buttons.
Waste liquid cleaning: Clean the instrument waste liquid collection box in a timely manner to prevent waste liquid from overflowing and corroding the internal components of the instrument. After cleaning, rinse the collection box with distilled water, dry it, and put it back in place.
（2） Regular maintenance (weekly/monthly)
Weekly inspection: Check whether the power supply and wiring of the instrument are intact, whether they are loose or damaged; Check if the refrigeration system is operating normally and if there are any abnormal noises or leaks; Check the sensitivity of the probe, and if there is any measurement deviation, clean or calibrate it in a timely manner.
Monthly maintenance: Check the internal pipelines of the instrument, remove residual liquid from the pipelines, and avoid pipeline blockage; Check the sealing of the piston/airbag. If there is any air or liquid leakage, replace the sealing ring in a timely manner; Clean the heat dissipation port of the instrument, remove dust, ensure good heat dissipation, and avoid damaging core components due to overheating.
（3） Regular calibration (every 3-6 months)
Calibration is the key to ensuring measurement accuracy and avoiding faults. It is necessary to use standard calibration reagents for calibration according to the requirements of the instrument manual. The specific operation is as follows:
Before calibration, the instrument needs to be preheated for 30 minutes to ensure that it is in a stable state;
Follow the instructions to add standard calibration reagents of different concentrations in sequence, complete the calibration operation, and record the calibration data;
If the calibration result exceeds the allowable error range, it is necessary to check the probe, sensor and other components, clean or replace them, and recalibrate until they meet the standard;
After calibration is completed, keep the calibration records properly for easy traceability and maintenance in the future.
（4） Storage and idle maintenance
Daily storage: Place the instrument in a dry, ventilated, stable temperature (recommended 15-25 ℃), dust-free, and non corrosive gas free environment, avoiding direct sunlight and high temperature and humidity; The instrument should be placed steadily, avoiding vibration and preventing internal components from loosening.
Long term idle (not used for more than 1 month): Turn off the instrument power and unplug the power cord; Clean the residual liquid and reagents inside the instrument, and cover all parts of the instrument with a dust cover after cleaning; Regularly (every 15 days) power on and preheat for 30 minutes, check the operating status of the instrument to avoid component aging; Core components such as probes and sensors should be stored properly to avoid damage.
（5） Maintenance precautions
During maintenance, it is necessary to turn off the instrument power and unplug the power cord to avoid electric shock or damage to the instrument circuit;
Strictly follow the instructions of the instrument to select cleaning solutions and calibration reagents, and prohibit the use of reagents that do not meet the requirements to avoid corrosion of components;
During cleaning and maintenance, move gently to avoid forcefully inserting or colliding with precision components such as probes and sensors to prevent damage;
Regularly train maintenance personnel to familiarize themselves with maintenance procedures and precautions, and avoid operational errors;
Establish maintenance records, detailing maintenance time, maintenance content, and calibration data, to facilitate subsequent tracking of instrument status and timely detection of potential faults.
English
