Among the precision instruments in the laboratory, thermostatic water bath have become indispensable equipment in fields such as chemical synthesis and biopharmaceuticals due to their precise temperature control and stable performance. However, many users neglect daily maintenance, resulting in decreased equipment efficiency or even premature scrapping. Reasonable maintenance of the reaction bath will reduce the failure rate and extend its service life, ensuring that experimental data is always accurate and reliable.
1. Daily cleaning and basic maintenance
① Surface cleaning standards
After daily use, wipe the equipment casing with a dust-free soft cloth to prevent liquid residue from corroding the surface.
Focus on cleaning the operation panel and heat dissipation port to prevent dust blockage.
② Internal tank management
Empty the residual liquid in the tank every 3 days and rinse with deionized water or alcohol to avoid salt crystallization damaging the inner wall.
When not in use for a long time, the liquid should be emptied to prevent the growth of mold.
2. Thermal fluid maintenance
① Liquid selection and replacement cycle
Choose high-purity thermal oil or ethylene glycol solution recommended by the manufacturer to avoid mixing.
Replace the heat transfer fluid every 6 months or after 800 hours of operation.
② Key points for liquid injection operation
Ensure that the equipment is turned off during refueling and use a filter to remove impurities.
The liquid level should not exceed ⅔ of the tank height, as excessive overflow can damage the circuit.
3. The core of precise temperature control
① Temperature Calibration Procedure
Perform three-point calibration with a thermometer every month (-20℃, 0℃, 40℃). If the deviation exceeds ±0.3℃, contact the manufacturer for adjustment.
② Running process monitoring
Monitor the abnormal noise and vibration of the compressor, which may indicate bearing wear or refrigerant leakage.
4. Environmental optimization and heat dissipation management
① Equipment layout guidelines
Maintain a space of at least 50cm around and avoid stacking items at the top that hinder heat dissipation.
It is recommended to configure a dedicated regulated power supply, with voltage fluctuations controlled within ±5%.
② Maintenance of cooling system
Clean the condenser fins with compressed air every week, as dust accumulation can reduce efficiency by 40%.
It is recommended to install laboratory air conditioning during the high temperature season. When the ambient temperature is above 30℃, the load should be reduced for operation.
