Common faults in low temperature system of high and low temperature test chamber (Part 2)
As mentioned in the previous section, if the compressor does not work, there may be a short circuit or an open circuit in the coil. You need to measure it, hook the clamp meter to any one of the three power lines of the compressor, and set the clamp meter to At the current "500A" position, set a temperature lower than the ambient temperature on the controller, run the machine, and observe whether the corresponding contactor of the compressor is attracted. If it is not attracted, it may be a button problem. If it is pulled in, immediately observe the value on the ammeter, whether the current value gradually decreases and falls below the rated current of the compressor. If the current is always large, the compressor may be short of oil and unable to start. The compressor needs to be replaced. machine; 4. Other parts In the low and high temperature test chamber, if the temperature change does not reach the test temperature value, you can check the electrical system to eliminate the obstacles one by one. If the temperature rises very slowly, you should check the wind circulation system and take a look at the adjustment gear of the wind circulation. Whether the board is turned on normally, on the contrary, check whether the motor of the wind cycle is normal. If the temperature is too fast, then the PID setting parameters need to be adjusted. If the low temperature of the test chamber does not reach the set target, you need to check the temperature cooling rate. If the cooling rate is very slow or there is a tendency to rise, in short, when the temperature does not reach the low temperature that the test chamber should be able to achieve and the set temperature target value, the former should check whether the studio is dried before the low temperature test To keep the studio dry, and then put the test samples into the work room for testing, whether the test samples in the work room are arranged too much, so that the wind in the work room cannot be fully circulated. , You need to contact the after-sales personnel of the professional manufacturer of the high and low temperature test box in time for maintenance. Common faults in low temperature system of high and low temperature test chamber Product categories of Cabinet Furniture, we have years of experience in the manufacture of furniture, Shoes Cabinet, Bedside Table, Cupboard , TV Stand and Coffee Table suppliers/factory, wholesale high-quality products of Study Desk , Gaming Desk and Working Desk . We have the perfect after-sales service and technical support. We hope we can cooperate happily.
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