In order to prevent the core accessory (laser) of the laser engraving machine from being damaged by freezing in cold winter, we provide you with the following three solutions:
1. If there is absolutely no power failure in the local area, do not turn off the chiller or water pump at night. At the same time, in order to save energy, the temperature of low-temperature and normal temperature water is adjusted to 5 ~ 10 ℃, so as to ensure that the coolant is in a circulating state and the temperature is not lower than the freezing point.
2. Drain the cooling liquid in the laser, laser output head and water cooler after use every day. All cooling water in the laser, laser output head, processing head and water chiller must be discharged completely in order to effectively protect the whole set of water cooling pipes and related devices!
3. Use antifreeze or glass water as coolant.
When the laser engraving machine is often powered off and does not have the conditions for draining the coolant every day, antifreeze must be used. The base fluid of antifreeze is generally composed of alcohol and water. When selecting or preparing antifreeze, its freezing point should be 5 ℃ lower than the minimum temperature of the environment. Glass water at minus 35 degrees can be used, or ethylene glycol can be blended with purified water in the ratio of 1:1, which can reach minus 25 degrees without freezing.