Constant temperature and humidity test chamber if there is no cooling or slow cooling is also a more complex issue, involving many factors, the solution can refer to the following steps from easy to difficult to gradually check.


1. Operating status: if there is a click operation button, if no restart is clicked.

2, test time: long-term experiments at low temperatures easily lead to evaporator ice, then we only need high temperature 60 degrees baking two hours of processing can be restored to normal.

3, test products: whether the product has heat, excessive heat will also lead to no lower temperature or slow cooling; adjust the number of products to the device can normally cool.

4. Leakage of cabinet: Mostly caused by lax sealing of the door, check whether the silicone strip of the door is aged or broken and whether the door is locked. Choose to replace the new seal or door lock!

5, the ambient temperature: cooling temperature requirements on the environment is high, generally require room temperature maintained at about 25 degrees, if the temperature is too high, you need to install air conditioning in the room or install an exhaust fan on the wall to reduce the indoor temperature.

6. Cycling fan: Check whether the circulating fan in the laboratory is operating normally, if the wind wheel is abnormal, and then repair or replace it.

7. Condenser: Check whether the condenser fins in the equipment cooling system are blocked by dust. Use a brush or blower to clean the surface.

8. Air circulation: Check whether the air outlet and air return of the air circulation system are blocked by the tested products, and adjust the product quantity to ensure that the air circulation is normal.

9. Electrical system: Check whether the contactor of the compressor is controlled, whether the thermal overload relay is abnormal and whether the compressor supply voltage is normal. Replace electronic components!

10. Refrigeration system: Focus on checking whether the compressor is burned, whether the refrigerant is leaking, and whether the condenser fan is running; then, check the leakage, repair welding, add refrigerant, and re-commission the equipment.

Anderson warm reminder: The temperature and humidity test chamber electrical system and refrigeration system maintenance or professional engineers to deal with, so as not to increase the damage outweigh the benefits!

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