Alarms; Overtemp Shutdown - Thermo Scientific SHKE8000 Series Maintenance Manual

Overtemp Shutdown

Thermo Scientific

Alarms

The Stackable 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 . . . . . . . . . . . .Temp High/Low
Platform Movement Status . . . . . . . .Platform Stalled
Motor Fuse Integrity . . . . . . . . . . . . . . . .Check Fuse
Both audible and visual alarm warnings for these nine parameters are
provided by the shaker. Visual flashing of the three diagonal indicator
lights on the control panel, a progression of text messages on the display,
and an audible tone alerts the operator that an alarm condition has
occurred, or currently exists.
For convenience, the audible tone is silenced by pressing the Silence
button, but will ring back in about 15 minutes if the alarm condition is
still present. However, the alarm warning indicator lights and alarm
messages continue until the alarm condition is corrected by the operator.
Then, pressing the Silence button clears the message from the display.
(The Check Belt and Check Fuse alarm messages clear from the display
when the unit is turned back on after correcting the alarm condition.)
As discussed in the Configuration section of this manual, the audible
alarm feature may be turned off to suit operator or laboratory needs. Refer
also to the Alarm Message/Corrective Actions chart in the Service section
of this manual.
Overtemp Shutdown alerts the operator that the overtemp setpoint has
been exceeded by a few tenths of a degree.
The Overtemp Shutdown message
displays and the heaters turn off, but the
platform and blowers continue to operate.
In the alarm state, the audible alarm is muted by pressing the Silence
button, but will ring back in about 15 minutes if alarm condition is still
present. The screen message and warning lights remain until the fault is
corrected. Then, alarm message is cleared by pressing the Silence button.
Section 2
Operation
Model SHKE8000 Series Shakers 2-7