Maintenance; Overview; Regular Maintenance - Omtech USB3020A User Manual

5. Maintenance

5.1 Maintenance Overview
The use of procedures other than those specified herein may result in hazardous laser radiation exposure.
Before any cleaning or maintenance work, always switch off the device and disconnect it from its power supply.
Always keep the system clean, as flammable debris in the working and exhaust areas constitutes a fire hazard.
ONLY allow trained and skilled professionals to modify or disassemble this device.
• Clean and cool water must be provided to the system at all times.
• The working table must be cleaned and the waste bin emptied on a daily basis.
• The mirrors and the focus lens must be checked every day and cleaned if required.
• The exhaust system must be checked every week and cleaned if required.
• The beam alignment should be checked weekly.
• The wiring should be checked every week for loose connections.
• The guide rails should be lubricated at least twice a month.
• The whole laser machine and its accessories must be checked overall every month and cleaned where required.

5.2 Regular Maintenance

5.2.1 Cleaning the Water System
NEVER touch or adjust your engraver's water supply while the pump is still connected to its power supply.
The laser tube requires cool and clean distilled water to avoid overheating. Tepid water at room temperature or a little
below is ideal. The laser tube requires at least 2 gallons (7.5L) of cool and clean distilled water to avoid overheating. If
the temperature of the water ever approaches 75°F (24°C), discontinue work until it has cooled or find a way to reduce
its temperature without interrupting the supply of water to the laser tube. The water should never be allowed to become
too cold either, which could also cause the glass laser tube to shatter during use. During winter or if ice is used to cool
hot water, ensure the temperature never falls below 50°F (10°C).
More water should be added every few days to ensure evaporation does not cause the pump to become exposed during
use.
5.2.2 Clean the Mirrors and Lens Daily
Dust and engraving debris will accumulate on your mirror and focus lens, resulting in energy loss and damage. They
should all be cleaned frequently, ideally daily or after each use.
The mirrors may be cleaned in place. Use a lens-cleaning tissue or cloth or a cotton swab with an acetone or alcohol
cleaning solution. Take care not to touch the surface of the mirro directly with your fingers. Sterile single-use rubber
gloves are helpful for this purpose. To avoid scratching the mirrors' surface coating or misaligning the laser beam's path,
swab each mirror as gently as possible. For best results, begin in the center and rotate slowly to the outer edges in a soft
circular pattern.
To clean the focus lens, remove it from the laser head, clean it in the same way as the mirrors, and then replace it. During
replacement, be mindful to leave the concave side facing down.
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