Starting And Stopping A Run - Fisher Scientific MARATHON 3000 Operation Manuals

3.2

Starting and Stopping a Run

Manual Operation
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3. Lift the rotor off the shaft.
Read Section 2.5, for a general description of the front
panel. The settings displayed on the front panel always
govern the operation of the unit. The display above the
Program key shows the unit's operating mode. It is
important that the unit be in the correct mode for the
desired operation.
The PROGRAM display can be one of the following:
•
blank The unit is in manual operation.
•
1-99 The unit is under control of the displayed
stored program number.
The rest of the display indicates the last parameters
selected.
For manual operation, press the MANUAL key so that the
program display is blank. Select the desired temperature
(3000R only), speed/g-force, run time, acceleration mode,
and braking mode. Press START, to start the spin.
The rotor will accelerate to 100 - 200 rpm and then coast
for a few seconds while the rotor recognition system
verifies the rotor and set parameters.
The time display counts down, and displays the time
remaining in the current spin, during manual operation.
The specified run time begins when the START key is
pressed. Braking begins when the set time elapses. Run
time does not include braking time.
The spin will stop automatically, at the end of the desired
interval. A run can, also, be stopped, at any time, by
pressing the STOP key.
The settings can be changed during a manual run. These
changes affect the run in progress. If the time setting is
changed, during a run, the unit adjusts the count-down
timer, to display the revised setting as the total time of the
run. If the new time selected is less than the elapsed time,
the run will end.
MARATHON Series Operation Manual
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