How to Change the Cooling Water in a Laser Marker

Detailed demonstration of the entire procedure for replacing the cooling water in a laser marking machine, including operational steps, precautions, and maintenance tips.With clear text and illustrations, the booklet helps users understand the correct way to change the cooling water, avoiding damage to equipment caused by abnormal water temperatures and extending the life of the laser marking machine.

Why is it necessary to replace the cooling water regularly?

When a laser engraver is working, it produces a great deal of heat. The cooling water is like a fever reducer for the equipment.If the water is not changed for a long time, bacteria may breed in the water and cause scale to build up, leading to reduced heat dissipation efficiency and even blockage of the water pipes.The lighter problems will affect the quality of the marking, while the more serious ones will burn out the laser--and the cost of repairing the laser is much more than the trouble of changing the water!

Preparing to replace the cooling water.

Don't forget the tools and materials.

Before you start, make sure you have a supply of antifreeze coolant (don't substitute tap water!), a funnel, a towel, a bucket, and a pair of rubber gloves.Remember to check the specifications in the user's manual to make sure you are using the right type of coolant. Different models may have different requirements.

Safety cannot be ignored.

Turn off the power first, wait until the laser has stopped working, and then operate.If the machine has just been working, it is best to wait half an hour for the water temperature to drop, to avoid burns.

Demonstrates the steps to replace them.

Old water must be completely drained.

Find the drain valve at the bottom of the equipment (usually located on the side or back), and use a bucket to catch the old water as it drains out.Check the water tank gauge to make sure that the tank is completely drained.If the water that comes out is cloudy or has impurities, it is suggested that you run distilled water through the pipes to clean them.

Adding new water is an art.

Open the drain plug and slowly pour in the new coolant through a funnel.When the level reaches 80 % of the set point, the pump stops and equipment is activated to circulate the water for two minutes to remove the air bubbles. Finally, the remaining amount of water is added.Do not fill it up completely, as the presence of air bubbles will affect the cooling effect.

Things to check after a water change.

Water leakage tests must be done.

After the equipment is started, the focus is on checking the joints, using a piece of absorbent cloth to wipe the joints and observe for any leaks.If a loose connection is discovered, the machine should be stopped immediately and the connection tightened.

Monitoring water temperature for details.

Allow the device to run for 15 minutes, and check to see if the temperature of the water remains stable within the range of 25-30 ℃.If the temperature fluctuates by more than 5 ° C, then the pump may need to be checked or the air bled again.

Tips for daily care.

It is recommended that the coolant be changed every three months. In a humid environment, the period should be shortened.Pay attention to changes in the water level; if the water level drops too quickly, there may be a leak in the pipe.It should be stored in a cool, dry place, and used up within six months of opening.