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4.11.1
Checking the Optical System (Visual Inspection)
Always check the optical system (articulated mirror arm, focusing handpiece) for potential
defects before starting therapy.
•
Verify that the articulated mirror arm has been firmly screwed in place on the laser.
•
Check the focusing handpiece for cleanness by holding it against a light source (backlight
check).
•
Select the "PILOT" line with the "SELECT" button, then select a high brightness level
(approx. 70%) for the pilot laser.
•
Aim the pilot beam at a light-colored (white) surface and focus it. The beam must exit the
handpiece centrically, irrespective of the position of the handpiece and the articulated arm.
There should be no scattered red light.
4.11.2
Testing the Optical System
To perform the optical system test, proceed as follows:
•
Connect a 127-mm handpiece.
•
Set the system to single pulse mode, 10 W, pulse length between 50 ms and 0.1 s.
•
Verify that all persons present are wearing protective goggles.
•
Set the pilot laser brightness to approx. 20%.
•
Hold an appropriate test object (wooden spatula, sheet of paper) into the beam's focus.
•
Have a non-reflecting beam trap (e.g. surgical towel, floor surface) in place behind the test
object, ensuring a distance of at least 50 cm between the test object and the trap.
•
Set the system to "laser ready".
•
Operate the footswitch and hold it down until one pulse has been emitted. Be sure to keep
the test object steady during this process!
•
The burn spot generated on the test object should exactly coincide with the focal point of
the red pilot beam. For example, if the laser beam burns a little hole through the wooden
spatula, the red aiming beam should – ideally – disappear through the hole and be
reflected on the beam trap surface as a red spot. If the CO
are not perfectly aligned with each other, there will be spot misalignment. Should the two
spots deviate from each other by more than 1 mm, do not use the system and call the
Technical Service to have your optical system realigned!
4.11.3
Testing the Irrigation Air Output
Set the system to single-pulse mode – 10 W, pulse length of 8 ms – for safety reasons. When
pressing the "laser ready" button, a gentle air flow should now be felt at the distal end of the
handpiece.
Attention!
Do not operate the footswitch!
32
MCO25plus Operating Instructions
laser beam and the pilot beam
2
V 4.1
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