As we all know, it is necessary to take good low-temperature anti freezing measures for lasers in winter. What problems should we pay attention to when changing water for chillers in winter? See the following three options:
L Keep the chiller running
Under the condition that there is no power failure in the local area, the chiller can be kept running, and the low temperature water and normal temperature water can be set at about 5 ℃ to ensure that the cooling water is higher than the freezing point and save electricity.
L Drain the cooling water in the machine
Drain the cooling water in the laser and chiller after each use.
Drainage method of chiller:
Remove the water pipe at the water inlet from the chiller, and then ventilate the water inlet (WATER IN) with compressed gas until the residual water in the chiller is blown out.
Drainage method of multimode laser:
Remove the water pipe at the water inlet from the laser, and then ventilate the water inlet (WATER IN) with compressed gas until the residual water in the water-cooled pipe inside the laser is blown out of the water outlet.
Drainage method of single-mode laser:
Remove the water pipe at the water inlet from the laser, and then ventilate the water inlet (WATER IN) with compressed gas until the residual water from the water cooling pipe inside the laser is blown out of the WATER outlet. Then plug the water inlet and outlet with water pipe (or rubber plug) to prevent dust from entering the interior of the water light.
L Replace cooling water with antifreeze
When the operating environment is frequently powered off and the cooling water cannot be drained every day, antifreeze must be used.
Selection of antifreeze
Please select the antifreeze with proper freezing point according to the local temperature. The choice of antifreeze is not that the lower the freezing point is, the better, but that of antifreeze slightly lower than the local temperature according to the local minimum temperature.
Professional brand antifreeze is recommended. Note: Any antifreeze cannot completely replace deionized water, and it is not recommended to use it for a long time all year round. It is recommended to clean the pipeline with deionized water or distilled water after winter, and resume using deionized water or distilled water as coolant.
If the machine is shut down for a long time (such as during the Spring Festival shutdown), it is recommended to drain the cooling water in the equipment, and use compressed air to blow the residual water in the equipment, including the laser and chiller.