Operating instructions

149
Service
External Calibration/Span Adjustment with Default Weights
S-CAL: Extern. adj. factory-def. wt. *
Press key Display Action
“Tare” 0.000 kg
“Start” – 20.0000 kg Place weight on pan: 20 kg
+ 0.003 kg Wait until 0.00X kg is displayed
“Start” 20.000 kg Press CF to end routine
External Adjustment with Automatic Weight Detection
S-CAL: Ext. adj. auto detect
Press key Display Action
“Tare” 0.000 kg
“Start” – 20.0000 kg Place weight on pan: 20 kg
(Tolerance of the weight: ± 2%)
+ 0.002 kg Wait until 0.002 kg is displayed
“Start” 20.000 kg Press CF to end routine
External Calibration/Adjustment with Operator’s Weights
S-CAL: Ext. adj. user-def. wt. *
Press key Display Action
“Tare” 0.000 kg
“Start” – 25.0000 kg Place weight on pan: 25 kg
+ 0.002 kg Wait until 0.002 kg is displayed
“Start” 20.000 kg Press CF to end routine
* Can also be adjusted without activating the service mode
Replacing the PCB
When replacing the PCB, always make sure before you re-insert the PCB that
there is enough heat-conducting paste between the housing and the cooling surfaces
of the electronic components.
Before closing the unit back up, you must also check all seals between the housing
and the display unit and replace them if necessary.
Note:
– Make sure the spacers are positioned properly!
– The PCBs are intrinsically safe. Therefore, you do not have to conduct
a high-voltage test after you reassemble the unit.
– If you conduct a high-voltage test, the electronic components on the PCB
will definitely be destroyed.
– Only technicians certified by Sartorius to work on explosion protected
equipment may perform soldering work on the PCB!