<p><b>Introduction</b></p><p>Output power: 40 W</p><p>Dimensions: Length 700 mm</p><p><b>Installation instructions:</b></p><p>1. Determine the positive and negative poles of the laser tube ( Near the spiral glass tube inside is positive and the other is negative).</p><p>2. Insert the water inlet pipe and outlet pipe into the water, usually the positive high pressure line is the input, the part of light output is the exit. Before you launch the machine, you need to check the tube to see whether it is normal. </p><p>3. Adjust the optical path with the laser and test switch on the machine. The ultimate goal is to make the laser point enter from the middle of the entrance hole of the laser head, and then adjust the vertical optical path.</p><p>4. When the light path is adjusted, the engraving can be cut or used, according to the actual situation to control the power output.</p><p><b>[WARNING]</b></p><p>1. The high-voltage power supply of the laser requires reliable isolation!</p><p>2. The cooling water should have at least 20 liters, and change it every two weeks.</p><p>Suitable temperature less than 30 grades</p><p>3. In winter, the water in the laser tube needs to be discharged first to prevent the tube from freezing and cracking.</p><p>4.This laser product is not visible light. The laser beam has a burn or more serious damage to the body. In the area of ​​the optical path of the optical transmission, the laser burn must be avoided during work and when you using !</p><p>Avoid of unnecessary damage, please open one end of the tube and then take the tube out carefully.</p>