What are the maintenance methods for the 96 hole nitrogen blowing concentrator?
Date: 2025-12-02Read: 0
The maintenance of the 96 hole nitrogen blowing concentrator should revolve around core modules such as the gas path system, heating system, sample bearing components, and control system, taking into account daily cleaning, regular calibration, and long-term maintenance. This can ensure the accuracy and stability of equipment operation, extend its service life, and avoid the impact of component failures on experimental efficiency. The following are detailed maintenance methods, according toDaily maintenance, regular calibration, long-term care, and fault preventionFour dimensional classification explanations: -
Daily maintenance after use (mandatory at the end of each experiment)
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Clean sample carrying platformThe sample platform is mostly made of PTFE coating or stainless steel material, and it needs to be dipped immediately after the experimentabsolute ethanolWipe with a dust-free cloth to remove sample residue, solvent traces, and crystals, especially cleaning the dirt in the pores and gaps to prevent corrosion of the coating or affecting thermal conductivity uniformity. If there are stubborn stains, they can be wiped with a neutral cleaner, then wiped clean with distilled water and dried.
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Clean the nozzle componentThe nozzle is a key component for nitrogen blowing and is easily blocked by sample splashing. Remove the air nozzle exhaust (some models can be disassembled as a whole), use a fine soft brush to remove surface attachments, and then useUltrasonic cleanerClean with anhydrous ethanol for 5-10 minutes, air dry and reinstall to ensure smooth ventilation of each nozzle and avoid uneven blowing due to blockage.
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Check the sealing of the gas pathTurn off the nitrogen cylinder/generator and observe if the instrument pressure gauge is stable. If the pressure drops rapidly, it may be due to loose pipeline joints or aging sealing rings. Tighten the joint and replace it with a new sealing ring if necessary (it is recommended to use a spare fluororubber sealing ring of the same specification).
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Shutdown standard operationFirstly, turn off the nitrogen gas source and wait for the instrument heating module to cool to room temperature (≤ 50 ℃) before cutting off the power to avoid direct power failure and damage to the heating element and control system at high temperatures.
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Regular calibration and in-depth maintenance (weekly/monthly/quarterly, adjusted according to usage frequency)
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Weekly: Inspection of gas path and heating systemApply soap solution to gas pipelines and joints every week to check for air leaks; Start the instrument to run without load, observe whether the heating module heats up smoothly, record the temperature difference between each hole position, and if it exceeds ± 1 ℃, handle it in a timely manner. At the same time, clean the dust from the instrument's heat dissipation port to avoid affecting heat dissipation.
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Monthly: Temperature and flow calibration: UseStandard thermometerPlace the simulated sample into the sample well, compare the temperature displayed by the instrument, and adjust it through the calibration function of the control panel when the error exceeds ± 0.5 ℃; with the help ofSoap film flowmeterCalibrate the nitrogen flow rate to ensure that the actual flow rate is consistent with the set value. If there is a significant deviation, contact the manufacturer to repair the flow controller.
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Quarterly: Core component maintenanceOpen the side cover of the instrument, clean the dust on the internal circuit board and fan (use a hair dryer with a cold air setting); Check if the thermocouple connection of the heating aluminum block is secure. If there is poor contact, it needs to be re plugged and fixed; Check if the power cord is aging or damaged, and if the grounding is good to avoid the risk of leakage.
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Maintenance during long-term idle period (applicable for downtime exceeding one month)
- Thoroughly clean all components of the equipment, especially the air nozzle, sample platform, and pipelines, to ensure that there are no residual solvents or samples.
- Disconnect the power supply and nitrogen connection, empty the residual nitrogen in the gas pipeline, seal the gas interface to prevent dust from entering.
- Place the device in a dry and ventilated environment, avoiding moisture or direct sunlight. Run it for 30 minutes without load every month, and power on the heating module and control system for self inspection to prevent component aging.
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Common fault prevention and specialized maintenance
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Prevent damage to the heating moduleIt is strictly prohibited to operate at high temperature for a long time without load on the sample platform to avoid deformation of the aluminum block caused by dry burning; The volume of the sample solution should be controlled within the specified range (usually not exceeding 2/3 of the pore volume) to prevent boiling overflow and corrosion of the heating element.
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Protection control systemAvoid operating in humid environments and prohibit touching the control panel with wet hands; Regularly backup the program data in the instrument to prevent data loss caused by sudden power outages.
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Nitrogen source supporting maintenanceNitrogen cylinders need to be replaced regularly, with a purity of ≥ 99.99% to prevent impurities from entering the gas path; If using a nitrogen generator, it is necessary to maintain the filter element and molecular sieve of the generator synchronously to ensure the cleanliness of the gas source.