How to Troubleshoot the Failure of a Constant Temperature and Humidity Chamber
If your constant temperature and humidity chamber is not reaching the required test conditions, start by observing the temperature behavior. If the temperature drops slowly or starts rising after reaching a certain point, there could be several reasons. For the slow temperature drop, check if the chamber was properly dried before starting the low-temperature test. Ensure that the chamber is dry and that the test samples are not overcrowded, as this can restrict airflow and affect cooling efficiency. If these factors are ruled out, it might indicate an issue with the refrigeration system, which should be addressed by contacting the manufacturer’s technical support.
In cases where the temperature rises after reaching a set value, the problem may stem from improper placement of the equipment. Make sure the ambient temperature around the unit is within the recommended range and that there is enough space between the back of the cabinet and the wall, as specified in the user manual.
When humidity levels fail to reach the desired setting—either hitting 100% unexpectedly or falling far below the target—this could be due to issues with the wet bulb sensor. Check if the gauze on the sensor is dry or damaged, and ensure the water tank has sufficient water. The water level controller should be functioning correctly, and the gauze may need cleaning or replacement if it has hardened over time. If humidity remains inconsistent, the humidification system might be at fault. Inspect the water supply system, boiler water level, and control settings. If everything appears normal, consult a professional technician for further diagnosis.
During testing, if the chamber suddenly fails and displays error messages or emits alarm sounds, refer to the control panel’s troubleshooting guide. This will help identify the type of fault, allowing you to contact a specialist quickly for resolution. Different environmental testing equipment may exhibit unique issues, so each case should be evaluated individually.
Regular maintenance is essential for long-term performance. Clean the condenser coils regularly, lubricate moving parts according to the manufacturer's instructions, and conduct routine checks on the electrical system. These steps ensure the chamber operates efficiently and reliably over time.
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