Cleaning The Mirrors; Cleaning The Exhaust System; Cleaning The Water Chiller - Omtech PRO 2440 User Manual

3. Remove the air assist hose and the guide wire from the laser nozzle.
4. Loosen the bolt in the upper part of the laser head that holds the middle part in place.
5. Carefully slide the middle part of the laser head out and remove the lens from its casing.
6. Examine the lens's O-ring and—if necessary—clean it with a cotton bud and lens-cleaning fluid.
7. Remove any coarse dust from the lens as well as possible by applying pressurized air.
8. Examine the lens's surfaces. If it is necessary to clean it, begin by flushing its surfaces with lens-cleaning fluid.
Set it on a lens-safe cloth, apply more cleaning fluid, and allow about one minute for it to take effect. Gently wipe
it clean with a lens tissue wetted with the cleaning fluid. Repeat the process on the other side of the lens.
NEVER use the same cleaning tissue twice. Dust accumulated during the first use might scratch the other
side of the lens during the second.
9. Examine the lens's surfaces again. Repeat the process above until no dust or haze is present.
10. Return the lens and its O-ring to their housing, being careful that the lens's rounded convex side is facing upward
away from the workbed.
11. Carefully reassemble the laser head in reverse order and then restore the nozzle connections.

6.2.3 Cleaning the Mirrors

The mirrors should be similarly cleaned if there is any debris or haze on their surfaces to improve performance and
avoid permanent damage. The 1st lens is located at the back left of the machine beyond the far end of the left Y axis.
It is more easily reached from the laser bay behind the top rear access door. The 2nd lens is located on the left Y axis
beside its connection to the X axis rail. It may be easier to reach from the top left access door. The 3rd lens is located
on top of the laser head on the X axis rail. The most detritus accumulates on the 3rd mirror and it should be checked
daily along with the focus lens. The 1st and 2nd lens should be checked daily if needed but are usually fine if they
are only checked once a week.
The mirrors can be cleaned in place using a lens-cleaning tissue or lens-safe cloth. They can also be removed for
cleaning by turning them counterclockwise. Again, be careful not to touch the mirrors' surfaces directly. Avoid
pressing hard enough to grind in any debris and risk scratching. If the mirrors are removed for cleaning, reinstall
them by turning them in place clockwise while being careful to avoid any scratches.

6.2.4 Cleaning the Exhaust System

Check the intake filter for the air assist at least one a week, cleaning it as needed. At the same time, check the
condition of the cooling fans for the water chiller and the bottom right access door. Use a small brush, vacuum, or
compressed air to gently clear any visible dust.
At the same time, check main fan and surrounding ducts for excessive accumulation of dust and debris. For best
results, use a brush, vacuum, or compressed air to remove large accumulation of dust and debris and use mild
cleansers and soft rags or paper towels to fully clean the fan and its blades at least once a month.
While you are doing the weekly inspection, check the seams and joints of the ducts for any damage or leaks. If any
are found, immediately repair them. Caulk or special-purpose aluminum foil tape generally work best if available;
standard duct tape can deteriorate over time, especially near heated components.

6.2.5 Cleaning the Water Chiller

Your water chiller should form a closed system, keeping dust and other contaminants out of your coolant and
minimizing the need to replace it. Clean exterior surfaces as above, being careful not to get any electronic components
wet. Check the water quality on your gauge upon first use and at least every month afterwards.
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