Single-point constant temperature and humidity test box alarm how to deal with single-point constant temperature and humidity test box alarm cause analysis Why some customers have no way to alarm single point constant temperature and humidity test box, in fact, in most cases, the device's alarm is The operator did not operate properly during the operation. This is why the manufacturer must send professional equipment operators when sending the equipment. The following are some of the relevant information of the test box alarm, including three main reasons: cooling system, temperature system, fan system:
(1) Single point constant temperature and humidity test chamber refrigeration system:
1. Refrigeration compressor overpressure alarm: When the refrigerant pressure of the refrigeration system exceeds the set value, the equipment stops and alarms, and the equipment must be returned to normal operation after troubleshooting and manual reset.
2. Power supply phase loss and phase sequence alarm: When the external power supply of the equipment lacks phase and the phase sequence changes, the equipment stops and alarms. After the fault is removed, the equipment can resume normal operation.
3, circulating cooling water shortage alarm: When the cooling water circulation system water pressure is insufficient, the equipment stops and alarm, must be troubleshooting and reset the equipment to resume normal operation.
4. Refrigeration compressor overheating alarm: When the compressor coil is overheated and the line power supply is abnormal, the equipment stops and alarms. After the fault is removed, the equipment can resume normal operation.
(b) Single point constant temperature and humidity test chamber temperature system:
1. Over-temperature alarm in the cabinet: The over-temperature protection device is installed in the sensor and channel of the sample area, and the over-temperature protection device is installed on the operation panel. When the temperature in the test area exceeds the allowable temperature set on the panel, the equipment is stopped and alarmed. , must set the highest temperature of 10 °C equipment to work.
2. Sample over-temperature protection: When the temperature in the sample area exceeds the protection temperature set by the controller, the equipment is stopped and alarmed. The equipment must be properly operated after the fault is removed and reset. The sample over temperature protection is divided into upper limit protection and lower limit protection, and the user can arbitrarily set according to their needs.
(C) single-point constant temperature and humidity test chamber fan causes:
1. Fan overheat alarm: When the fan coil overheats, the equipment stops and alarms. The equipment must be allowed to resume operation after the fault is removed.
2. Fan over-current alarm: When the fan current exceeds the allowable value, the equipment stops and alarms, and the equipment must be allowed to resume normal operation after over-current troubleshooting is completed.
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