28
BÜCHI
Fat Determination
B-820/B-821
Ensure that the unit has been commissioned according to
the instructions in Section 4, Putting into operation.
5.1
Control, operating and display elements
The main power switch is located at the back of the unit.
If, in the case of a failure, the current requirement of the unit
increases to more than 12 A, a bimetallic switch interrupts
the circuit, which automatically turns the main power switch
off. After the fault has been rectified, the unit can be operated
by turning it on once again.
The operating panel shows:
햲
Display
햳
Lamp lights up when the unit is ready for an injection or a
gas flow measurement.
햴
Lamp lights up when the determination or preheating
process is running.
햵
Lamp lights up when a failure has occurred.
햶
Each menu command has its own help text which can be
called up via the display.
햷
Pressing this key moves the application one step up on the
menu hierarchy. Exceptions are the sample weight/mode,
the elimination table and the data output table, where pres-
sing the <ESCAPE> key will return you to the main menu.
햸
Moves the cursor up within a menu.
5
Operation
Figure 18: Control, operating and display elements
5 Operation
