Power Failure; Rpm Tracking; Check Belt - Thermo Scientific MAXQ SHKE435HP Operating And Maintenance Manual

Section 2
Operation

Power Failure

RPM Tracking

Check Belt

2-8 Orbital Shaker
Power Failure alerts the operator that
electrical power to the unit was
interrupted, under specific operating conditions.
While the system returns to normal operation when power is restored, the
alarm message remains and the audible tone continues to sound to alert the
operator. Both the display message and the audible tone are cleared by
pressing the Silence button.
Note The alarm will not occur if the power failure is less than 15 seconds
in duration, while the unit is shaking.
If power is interrupted for more than 1½ hours while the unit is turned on
but not shaking, a Power Failure alarm will occur. The purpose of the
alarm in this case is to alert the user that an extended duration power
failure occurred during the Hold interval after a timed shaking operation,
or during a period of incubation only. This alarm will also occur any time
the unitis turned on after being turned off for more than 1½ hours (such
as when the unit is shipped from the factory, or when it is returned to use
after a period of storage).
RPM Tracking alerts the operator by
either alarm message shown below that
the platform speed has varied ±5 RPM.
In the alarm state, the audible alarm is
muted by pressing the Silence button, but rings back in about 15 minutes,
if the alarm condition is still present. However, the message and indicator
lights persist until the fault is corrected. Afterward, the remaining relevant
alarm components are cleared by pressing the Silence button.
Check Belt alerts the operator that the
drive belt may have broken, is slipping
because it needs tightened, or something
is slowing or preventing platform movement.
In the alarm state, the audible alarm is muted by pressing the Silence
button, but rings back in about 30 minutes, if the alarm condition is still
present. However, the message and indicator lights persist until the fault is
corrected. Afterward, the remaining relevant alarm components are cleared
by pressing the Silence button.
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