Constant temperature and humidity test room low temperature cooling is a very slow solution

Constant temperature and humidity laboratory is widely used in electrical, electronic, aerospace, aviation, instrumentation and other industries, materials, parts and equipment to accelerate damp and heat test, alternating temperature test, etc.
, in order to evaluate
the behavior of the specimen under given environmental conditions.

What should I do if the cooling is very slow when the constant temperature and humidity test room is low? 1.
Check whether the door of the constant temperature and humidity test room is closed, and do not open the door when doing the test, so as not to affect the cooling rate
with a large temperature difference.

2, test whether the indoor ambient temperature is too high, constant temperature and humidity test room for the placement of ambient temperature is required, if the temperature is too high, find a way to reduce the ambient temperature, such as installing air conditioning in the house or opening the baffle below with a fan to blow, so as to achieve the effect of
cooling.

3, because the temperature can not be maintained, observe whether the refrigeration compressor can be started during the operation of the test chamber, and the compressor can be started during the operation of the environmental test equipment, indicating that the electrical circuit from the main power supply to each compressor is normal, and there is no problem
in the electrical system.

4, the condenser dust is too much, clean the ash of the condenser, the fan does not turn to observe whether the fan can be started during the operation of the test chamber, such as the fan can be started during the operation of the test chamber, indicating that the fan is normal
.

Check the refrigeration system of the constant temperature and humidity test room: 1, check the refrigeration system, first check the exhaust and suction pressure of the low-temperature R404 compressor of the two sets of refrigeration units are lower than the normal value, and the suction pressure is in a pumped state, indicating that the refrigeration dose of the main refrigeration unit is insufficient
.

2.
Touch the exhaust and suction lines of the compressor of the host group with your hands, and find that the temperature of the exhaust line is not high, and the temperature of the suction line is not low (no frost), which also shows that the refrigerant of the host group is insufficient
.

3.
Check whether the test workpiece is a live test with a large load, and measure the heat
of the workpiece during the live test.

If the heat is within 300W, there is no effect on the test chamber, but the heat is too large so that the temperature in the box is slow to cool down and cannot reach the instrument setting or not cooling
.

If you encounter a series of problems when using the constant temperature and humidity laboratory, you can consult
Dongguan Aipei Test Equipment Co.
, Ltd.