OERTLI OS 4, Service Manual

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2021-03-23 / Rev. 10 VV016042 29
9.2 General servicing procedure
Laser servicing consists of a two-level procedure.
First-level support:
Direct support at the unit shall only be carried out by service technicians authorized by Oertli. This comprises preventive
maintenance and calibration. If the
difference between the power settings and the power measured after calibration is more
than 20% , second-level support will take place.
Second-level support:
All other maintenance steps take
place in the manufacturer’s support location. The second-level repair facility also provides
service engineers with service information and advice.
9.3 Maintenance schedule
The laser system must be checked and/or calibrated once a year. The routine includes:

Calibration of working beam

Calibration of aiming beam

Checking system according to Appendix D) Functional test
9.4 Inspection and cleaning of test fibre
The test fibre end face on both sides must be inspected prior to connection and if neces-
sary cleaned. Otherwise the test fibre might get damaged and erroneous calibration may
result.
DANGER!
Direct or scattered laser radiation
Eye or skin damage
► Never inspect a fibre end face that is connected at the other end to a laser
STEP 1: Fibre inspection
1.
2.
3. Remove protective endcap on one side
of the test fibre and put it on a clean sur-
face.
Connect fibre to the inspection scope
and adjust the focus ring so that you see
a clear endface image.
The fibre connector must be clean and
completely free of particles, otherwise
continue with cleaning
clean fibre
not clean
not clean not clean