Omtech PRO 3655 User Manual page 119

Step 4.
Loosen the bolt in the upper part of
the laser head that holds the middle
part in place.
Step 5.
Carefully slide the middle part of the
laser head out and remove the lens
from its casing.
Step 6.
Examine the lens's O-ring and—if
necessary—clean it with a cotton swab
and lens-cleaning fluid.
Step 7.
Remove any coarse dust from the
lens as well as possible by applying
pressurized air.
Step 8.
Examine the lens's surfaces. If it is
necessary to clean it, begin by flushing
its surfaces with lens-cleaning fluid.
Step 9.
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.
Step 10. Examine the lens's surfaces again. Repeat the process above until no dust or haze is
present.
Step 11. 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.
Step 12. Carefully reassemble the laser head in reverse order and then restore the nozzle
connections.
NEVER use the same cleaning tissue twice. Dust accumulated during
the first use might scratch the other side of the lens during the
second.
112
Lens
Cotton Swab Laser Optic
Rolling Roll Across
Motion Surface