13.  Care and Maintenance
13.1  Service
To ensure the continued accuracy of your balance, we recommend scheduling  
regular servicing at least once a year. Sartorius Service offers different service 
contracts with maintenance intervals that are tailored to your needs (see  
www.sartorius.com/service). A calibration certificate should be issued as part of every 
maintenance session. Have a qualified electrician inspect the technical safety of the 
AC adaptor and its connections at appropriate intervals (e.g., every two years).
Repairs 
Repair work must only be carried out by trained service technicians. Never attempt to 
repair the equipment when the power is turned on! Unplug the AC adaptor from the 
electrical outlet (mains supply) beforehand. Repairs performed by untrained persons 
will invalidate the warranty, and may result in considerable hazards for the user and 
cause the balance to produce inaccurate results. Contact Sartorius Service or a 
Sartorius dealer for the proper repair of your balance.
The device must be unplugged during repair work. Unplug the power cord. 
Repairwork must only be performed by trained technicians.
13.2  Cleaning the Balance
Cleaning the Control Panel
Switch the display to Standby mode to avoid modifying the settings for operation 
during cleaning.
t  Touch the Menu key to switch to the application selection. 
t When 
j is then selected, the display goes off. 
t  To switch the display back on again: Select j at the bottom left of the display. 
The balance starts in the application that was most recently used before it was 
switched off.