6 Stirring operation
Thermo Scientific
20
50108226_02.2007
:
The stirring bar symbol turns when the stirrer is active. How the symbol turns
indicates the selected stirring mode.
Stirrer: Symbol continuously turns in the same direction
Interval: Symbol alternates between turning clockwise and turning
counterclockwise
Shake: Symbol rocks back and forth
:
The stair symbol indicates reduced stirring power. The power is adjustable:
For the TELEMODUL 20 C in 4 increments between 25 % and 100 %.
For the TELEMODUL 40 C in 10 increments between 10 % and 100 %.
*
:
The asterisk symbol remains visible on the display until the set speed (rpm) has been
reached (soft start).
Three program keys (9) are available for storing repeated combinations of parameters.
Changes to the parameters are stored as a part of the currently active program. The
speed can always be adjusted by simply turning the adjusting wheel (8).
Press one of the program keys P1, P2 or P3 (9).
Programs can be selected only if the control unit has been turned off with the
START/STOP key (11). All other settings can be adjusted while the unit is turned on.
The adjusting wheel (8) serves two purposes: selecting a menu and adjusting values.
Press the adjusting wheel (8).
The display shows the main menu (Table 4)
Select a function by turning the adjusting wheel (8).
The selection marker indicates the selected function.
Confirm your selection by pressing the adjusting wheel (8).
The display will show the appropriate selection menu (Table 4). Repeat the
process until you have reached the desired settings menu.
Use the adjusting wheel (8) to make the desired adjustment (e.g. to the stirring
power).
Confirm your setting by pressing the adjusting wheel (8).
The display will return to the previous menu. The marker will point to back.
Select another menu.
or
Confirm all settings by again pressing the adjusting wheel (8). Repeat until the
stirring display (Figure 10) reappears.
alternatively:
Press the program key (9) for which you made the settings. The settings are
stored, and the stirring display (Figure 10) reappears.
6.3.3 Stirring
Fill stirring vessels no more than half full (upper rotation speed range) or three-
quarters full (lower rotation speed range).
Place a magnetic stirring bar into every stirring vessel.
Place the stirring vessel on the stirring point (1) of the magnetic stirrer.
Select a program key (9).
Start the stirrer using the START/STOP key (11).
Set the desired speed using the adjusting wheel (8).
