Thermo Scientific 11174729, Instruction Manual

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Chapter 5
INSTRUCTIONS FOR USE
Thermo Fisher Scientific MR23i 5-7
The flashing arrowhead indicates T (For an explanation of T
see Chapter 4: “OPERATING PRINCIPALES” Section “REFRIGE-
RATION SYSTEM” ). Use the keypad to input a value and then (if
required) the +/- key to change the mathematical sign of the value.
Alternatively, the user has the choice of directly selecting one of the
most popular operating temperatures (4, 20 or 37°C) and/or using
+/- to introduce a negative value.
If wished use to first indicate temperature selection then sel-
ect the temperature. Select ENTER to return to the simple pro-
gramming screen.
C) Time related : Integral, hold
On the simple programming screen, use to move the
flashing arrowhead to indicate the time then select DETAILS.
The flashing arrowhead indicates integral selection. For more infor-
mation on integral select ABOUT INTEGRAL and also MORE
INFO for an accurate definition.
Select ESC/ESC to return to the time / integral screen. If this appli-
cation has just been used, VIDEOset will indicate the recently total-
led integral value.
Selection of ENTER will return the user to the simple programming
screen but with control by integral instead of time, ensuring the
highest possible run-to-run reproducibility (see
Chapter 4: “OPE-
RATING PRINCIPALES” Section “INTEGRATION” ).
Note This will only be possible if a rotor has already been selected, the
integral value being linked to the ‘g’ force which is calculated from
the centrifugation radius of the rotor.
Alternatively, use to indicate time and enter a value or press
HOLD for operation with no time limit.
Selection of ENTER makes a return to the simple programming
screen.
To use the modified parameter changes without permanently
storing them select END PROG.
During a run controlled by the integrator, the preset value for time
will indicate REPROducible, the integral value will count down and
the timer will count up the corresponding time.
SAVING AN APPLICATION /
PASSWORD PROTECTION
From the simple programming screen select SAVE APPLI (if the
flashing curser
is on temperature, it will be necessary to select
to make SAVE APPLI reappear). The application save screen
appears, proposing the next available empty memory. If required,
use and to review other memories whose application program
parameter values are indicated at the right hand side of the screen.