60 90 570 D 3485
46 D 3485.201.04.09.02 09.2007
8 Maintenance and service
8.2 Safety checks
The following safety checks must be performed every 24 months by a quali-
fied service engineer:
z Visual inspection of the unit and its accessories for mechanical damage
that might impair operation
z General function check
z Check of the audible and visual indicators
z Earth leakage current NC and SFC accd. to IEC 601
z Housing leakage current NC and SFC accd. to IEC 601
z Patient leakage current NC and SFC accd. to IEC 601
z Laser power measurement with calibrated measuring equipment in the
range between 0.5 W and 7 W
8.3 Maintenance
The SIROLaser does not require special maintenance. In case of malfunc-
tioning, see chapter Technical support, repair and testing. However, Sirona
Dental Systems GmbH recommends the following actions to be taken at reg-
ular intervals:
NOTICE
i
If national or local legal regulations require additional safety checks for your la-
ser unit, these regulations must be complied with and the corresponding
checks must be performed.
The manufacturer accepts responsibility for the safety of the laser unit only if
the following prerequisites are fulfilled:
z Modifications of the laser unit or repair work must be performed by autho-
rized personnel.
z The electrical system at the premises where the SIROLaser is installed
must comply with the applicable legal requirements for electrical installa-
tions.
z The laser unit must be used in compliance with the instructions provided
in this manual.
8.4 Basic troubleshooting
In case of malfunctions, check the following first:
¾ Check the connection of the power cord.
¾ Check the connection of the INTERLOCK device.
¾ Check the connection of the optical fiber.
¾ Be sure that all operational steps have been executed correctly.
Action Interval Person in charge
Check of the optical fiber (see chapter 4.7
“Connecting the optical fiber” on page 22)
before each treatment
session
Operator
Calibration of the laser (see chapter 8.1
“Calibration-Check” on page 43)
weekly Operator
Safety checks (required by law in some
European countries)
every 2 years Sirona Dental Systems GmbH, local dental
distributor or authorized service center
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