High Pressure Alarm For Precision Air Conditioner Refrigerator

Reasons and solutions for the high-voltage alarm of precision air-conditioning refrigerators in computer rooms:

Generally, the precision air-conditioning freezer in the computer room is equipped with a full set of protection devices. When the refrigerator has a high-pressure alarm, it will automatically activate the protection device, and the corresponding fault indicator light will light up. At this time, the refrigeration unit will not stop running, and the operator should use the following methods to troubleshoot, or contact the refrigeration machine manufacturer for consultation.

1. The high-pressure alarm of the water-cooled refrigerator is generally related to the cooling water system. Water-cooled chillers are supplied with circulating cooling water through a fluid cooling tower. If you are not already using a fluid cooler, we recommend that you use a fluid cooler to generate cooling water. The cooling tower has a relatively high precision in controlling the water temperature, otherwise the circulating water with a relatively high temperature will circulate to the cooler, and high pressure problems will occur. Otherwise, if there is any problem with the fluid cooler, the delivery of cooling water will be unsafe and stable.
2. The cooling water flow rate is too small, or the temperature is too high, and the heat is not good, and this problem will also occur. The flow of cooling water is very small. It is necessary to check whether the pipe size of the matching device matches the size of the refrigeration unit, and whether the water valve is opened to the maximum direction. If it is an air-cooled freezer, we must check whether the ambient temperature of the equipment exceeds 40°C. When necessary, the heat must be discharged in time to ensure that the refrigeration unit is in an air circulation environment; 3. The refrigeration unit runs for too long, causing scale and other debris to accumulate on the tube wall or in the condenser copper tube. This will inevitably affect the refrigeration cycle system. Therefore, we strongly recommend that the circulating water of the refrigeration unit is provided by the closed cooling tower, because the cooling circulating water in the closed cooling tower is a closed loop water that is closed and does not contact the outside world, and the cooling circulating water in the closed cooling tower does not contact the outside world. Contact will not cause pollution to the circulating water. At the same time, the circulating water is soft water and is not easy to scale, which can prolong the service life of the refrigerator and produce better heat dissipation efficiency.
3. Check whether the refrigerant is excessive. The refrigeration unit will be filled with an appropriate amount of refrigerant before leaving the factory, so there is no refrigerant leakage. Too much or too little refrigerant is not acceptable. The user does not need to add refrigerant. If there is too much refrigerant, It will only affect whether the unit can be used normally.
4. If the expansion valve is too small, we can gradually adjust the opening of the expansion valve to eliminate the problem.www.gwbrefrigeration.com