Thermo Scientific 420 Series, Operating And Maintenance Manual

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1. Press the button beneath the Time setpoint. Hold will begin to flash.
2. Press either arrow to access the Countdown Time setpoint. The preset
time setpoint will begin to flash.
3. Press the up or down arrows to set the desired operating time in five
minute increments. Hold either arrow to scroll in that direction.
4. When the desired elapsed time is set (8 hours, 30 minutes in this
example), press the Time button to return to the Operating Screen.
Pressing the Start button will start the shaker and begin the countdown
sequence. When 00:00 is reached, the shaker will automatically shut
off and the Cycle Complete alarm will sound.
The orbital shaker control system monitors and provides alarms for nine
operating parameters.
Parameter . . . . . . . . . . . . . . . . . . . . . .Alarm Message
Overtemp Setpoint Status . . . . .Overtemp Shutdown
Cycle Status . . . . . . . . . . . . . . . . . . .Cycle Complete
Loss of Input Power . . . . . . . . . . . . . . .Power Failure
RPM versus Setpoint . . . . . . . . . . . . . .RPM Tracking
Drive Belt Integrity . . . . . . . . . . . . . . . . .Check Belt
Temp Sensor Integrity . . . . . . . . . . . . . . .Sensor Fault
Temp Control Status . . . . . . .Temperature High/Low
Platform Movement Status . . . . . . . .Platform Stalled
Motor Fuse Integrity . . . . . . . . . . . . . . . .Check Fuse
Orbital Shaker 2-5 Thermo Scientific
Section 2
Operation
Change from Hold to
Countdown
Figure 2-3. Flashing Hold
Figure 2-4. Time Set
The Shaker Alarms