How to solve common faults of constant temperature humidity chamber

The constant temperature humidity chamber will cause different levels of damage to the machine and equipment after long-term temperature running-in. Therefore, the following points are common troubleshooting solutions for the constant temperature humidity chamber.

1. When the constant temperature humidity chamber is conducting the high temperature test, if the temperature change cannot reach the preset value, the electrical system shall be subject to fault detection one by one,. When the temperature rises slowly, it indicates that the air circulation system is abnormal, and check whether the adjusting baffle in the air circulation system is normally opened.

2. When the ultra-low temperature of the constant-temperature and constant-humidity test chamber cannot reach the index value specified in the experiment, further observation of the temperature change must be carried out to determine whether the temperature drop is relatively slow or whether there is a warming condition after the temperature reaches a certain value.

If the former condition occurs, it is necessary to check whether the individual studio has been air-dried before the ultra-low temperature experiment, so that the individual studio can maintain a dry natural environment, and then put in the experimental samples to carry out the experiment, and check whether the experimental samples are placed too much, so that the wind energy in the studio can be fully circulated. After clearing the problem, it is necessary to check the common faults in the refrigeration unit. The latter condition is caused by the poor use environment of the equipment, and the placement temperature does not meet the requirements.

When conducting a humid, hot, and humid experiment in a constanttemperature humidity chamber, the actual humidity that occurs will reach 100%, with a much lower value. This condition will be caused by the dryness of the gauze on the wet bulb sensor. Therefore, it is necessary to check whether there is a water shortage in the wet bulb temperature sensor’s water tank, and the water level in the water tank is automatically controlled based on the water level sensor. Check the water supply equipment of the water level sensor and check whether the water supply is normal and whether the water level sensor is normal.

When other abnormal faults occur during the constant temperature humidity chamber test, you can query the operating instrument panel, which can reflect the matching common faults and transmit the common fault data signal according to the method of audible alarm, so that the operator can compare the faults and clear them.

Cause analysis of excessive current in constant temperature humidity chamber:

1. The power supply voltage input to the constant temperature humidity chamber is too low, which reduces the allowable working voltage, and then leads to excessive starting current.

2. The output power and current of the compressor in the constant temperature humidity chamber increased, but it did not reach the “axle holding” or “cylinder jamming”, resulting in the electrical failure to reach the rated speed, making the compressor unable to rotate, resulting in excessive starting current.

3. The refrigeration unit of the constant temperature humidity chamber is affected by external factors, such as the cooler is close to the wall, and there are too many stains on the pipe. Of course, the effect of gas condensation is poor, and the hot gas cannot be released.

4. Sudden power failure or sudden power-on, the time interval is short, and under the condition that the high and low pressure in the system are not balanced, resulting in start-up difficulty, resulting in excessive current of the compressor.

5. The refrigerant in the compressor of constant temperature humidity chamber leaks, the temperature cannot be reduced, and the motor rotates continuously, resulting in excessive current.

6. The starting relay fails, causing the overload protector of the constant temperature humidity chamber to fail, resulting in excessive current.

Five factors affecting the power consumption of constant temperature humidity chamber:

1. The constant temperature humidity chamber should be placed in a cool and ventilated place and away from the dry environment. When placing the equipment, it is necessary to leave appropriate space on the left and right sides of the equipment for cleaning and heat dissipation. Because the higher the environment around the small constant temperature humidity chamber, the higher the power consumption of the equipment.

2. The tightness of the sealing strip of the equipment shall be checked frequently. If the sealing strip is deformed, it will affect the tightness of the closing, cause the leakage of cold air and increase the power consumption of the equipment.

3. After the constant temperature humidity chamber is used for a period of time, it may produce a lot of ice and frost. Once the frost cannot be defrosted regularly, it will affect the refrigeration effect of the equipment. Excessive power consumption will also cause certain damage to the compressor of the equipment.

4. Every time the door of the chamber is opened, when there is cold air exposure and hot air intrusion, the compressor must be started again, the number and time of opening and closing the door should be reduced as much as possible when storing samples, and the action of opening and closing the door should be fast to avoid causing current loss.

5. Always pay attention to cleaning the small constant temperature humidity chamber. The surface of the compressor and condenser should be cleaned every two to three months. The more dust is accumulated, the worse the heat dissipation effect is, and the greater the power consumption is. When cleaning, cut off the power supply and wipe it with a wet cloth.

Precautions for routine maintenance of constant temperature humidity chamber:

1. The make-up water tank and water recovery water tank shall be regularly cleaned and maintained every three months.
2. The water level control floating ball set can be cleaned once every six months after the connecting screw is removed.
3. After removing the six screws around the humidification cylinder, remove the scale, which can be done once every six months. (Note: Please turn off the emptying in the furnace and the main power switch before removal.)
4. Maintenance of water filter. This component is a consumable material, which needs to be replaced regularly according to the quality of water. In other words, the replacement frequency will be higher if the water quality is poor or the number of water return cycles is large.

LISUN lauched Temperature Humidity Chamber | Thermal Chamber | Climate Chamber is according to IEC60068-2-1 (GB/T2423.1) and IEC60068-2-2 (GB/T2423.2), IEC60068-2-78, IEC60598-1, GB/T2423.17, GB/T5170.2, GB/T5170.5. The climate chamber is used to test the CFL/LED which meets IES LM-80-08, electricity products, automative cars, home appications and mobiles.

What is Climate Chamber?

Climate chambers is used to simulate a temperature enviromental condistions, it may also be called environmental chambers or Thermal Chamber or Temperature Chamber. You can click the below videos to learn the details and also how to operate it.

GDJS-015B Temperature Humidity Chamber | Thermal Chamber