Common faults of constant temperature and humidity box
2Th Filter Pleating Machine,Air Filter Cleaning Machine,Filter Paper Pleating Machine,Paper Pleated Machine ChangZhou FENGJU Machinery Equipment CO., LTD , https://www.czfengjumachinery.com
1. How to solve the problem if the low temperature fails to reach the target and the temperature drops slowly?
A. If the temperature drops very slowly, you need to check the following points, whether the studio has been dried before the low temperature test, the studio must be dried before the test, and then put in the test sample for testing; whether the test sample in the workroom Excessive placement will cause the air in the working room to not be fully circulated. After eliminating the above reasons, it is necessary to consider whether it is a failure of the refrigeration system, and the maintenance of the refrigeration system requires the operation of professional personnel from the manufacturer.
B. If the temperature has a tendency to rise after reaching a certain value, first check whether it is caused by the use environment of the constant temperature and humidity box, whether the ambient temperature of the device and the location (the distance between the box and the wall) meet the requirements, etc. (There are provisions in the equipment operation instructions).
2. What should I do if the temperature control shows abnormal pressure?
First, check the placement of the equipment, whether it is more than 30 cm away from the wall, because poor heat dissipation will cause the pressure on the high pressure side of the compressor to be too high, so if it is caused by improper placement, it needs to be adjusted in time; second, check the instrument Whether the surrounding is a sealed space, if the surrounding is a closed space, it will cause temperature rise in the environment, and also cause excessive pressure on the high pressure side of the compressor, so please keep the surroundings ventilated; if it is not the above fault, please ask a professional for inspection and repair.
3. In the high temperature test, the temperature change cannot reach the test temperature value, how to solve it?
Analysis: You can check the electrical system and troubleshoot one by one.
A. If the temperature rises very slowly, you need to check the air circulation system and whether the adjustment baffle of the air circulation is normally opened.
B. If the temperature rises quickly, check whether the air circulating motor is operating normally. If the temperature overshoot is severe, then you need to tune the PID setting parameters. If the temperature rises directly, over-temperature protection, then the controller fails and the control instrument must be replaced.