Thermo Scientific 7400 Series, Operating And Maintenance Manual

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Change Low Level
(Start Filling) Setpoint
Refer to Figures 2-1 and 2-2.
1. Turn the key switch to the Programming Access position (.) and verify
that the desired scale is selected on the Bar Graph.
2. If the yellow Fill Valve Open indicator is lit, the system is in Fill Mode.
3. Press High Level.
4. Press the up arrow to raise the high level setpoint. A flashing orange
LED will begin to move upward. Release the up arrow when it reaches
the desired level on the bar graph. If lowering the high level (stop
filling) setpoint, press the down arrow. The flashing orange LED will
begin to move downward.
5. Release the down arrow when the stop filling (high level) setpoint is
reached.
6. Press Enter to store the new setting in the microprocessor memory.
Return the key switch to the Lock position.
Refer to Figures 2-1 and 2-2.
1. Turn the key switch to the Programming Access position (.) and verify
that the Bar Graph is set to the desired scale.
2. If the yellow Fill Valve Open indicator is lit, the system is in the fill
mode.
3. Press Low Level.
4. Press the up arrow to raise the low level (start filling) setpoint. A
flashing orange LED will begin to move upward. Release the up arrow
when it reaches the desired level on the bar graph.
5. If lowering the low level (start filling) setpoint, press the Down Arrow.
The flashing orange LED will begin to move downward. Release the
Down Arrow when the low level (start filling) setpoint is reached.
6. Press Enter to store the new setting in the microprocessor memory.
Return the key switch to the Lock position.
Note Depending on the new setpoints, filling will not begin until the
chamber liquid level falls below the new low level setpoint.
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2-4 7007400 Cryoplus Thermo Scientific
Section 2
Operation
Change High Level
(Stop Filling) Setpoint