RC12
BP™
Controls, Indicators, and Displays
3-21/3-22
MOTOR OVERHEAT DETECTED - CALL SERVICE
Indicates that high motor temperature has tripped its thermal
switch, or that the motor temp circuit is otherwise open. Wait
for the rotor to stop spinning, remove all sample from the
rotor, unplug the centrifuge and contact Thermo Service.
(WatchLog Network™ record: MOTOR SENSOR.)
ROTOR OVER MAX SPEED – CONTACT SERVICE
Speed was more than 200 rpm higher than the rotor's
maximum rated speed, indicating improper speed control
or a faulty tachometer circuit. Wait for the rotor to stop
spinning (this could take as long as 30 minutes), then use
the mechanical override to remove all sample from the
rotor, unplug the centrifuge and contact Thermo Service.
Read the WARNING on page 3-18. (WatchLog Network™
record: ROTOR OVERSPEED.)
SHUNT OVERHEAT DETECTED - CALL SERVICE
Indicates that high brake resistor temperature has tripped its
thermal switch (indicating that the resistor was energized
when it should not have been), or that the brake circuit is
otherwise open. Wait for the rotor to stop spinning, remove
sample from the rotor, unplug the centrifuge and contact
Thermo Service. (WatchLog Network™ record: SHUNT
OVERDRIVE.)
TACH FAULT DETECTED – CALL SERVICE
During a run, the tachometer signal was lost, indicating
that the tachometer circuit has failed, or that the drive
shaft is damaged. Wait for the rotor to stop spinning (this
could take as long as 30 minutes), then use the mechanical
override to remove all sample from the rotor, unplug the
centrifuge and contact Thermo Service. Read the WARN-
ING on page 3-18. (WatchLog Network™ record: TACH
FAULT.)
UNEXPECTED ISR – CALL SERVICE
The microprocessor has detected erroneous information or
encountered a processing problem. The run in progress may
or may not be terminated; the controls and displays might
lock-up. Turn the main power switch OFF and back ON. If
the fault recurs, turn the main power switch OFF. Wait for
the rotor to stop spinning (this could take as long as 30
minutes), then use the mechanical override to remove sample
from the rotor, unplug the centrifuge and contact Thermo
Service. Read the WARNING on page 3-18. (WatchLog
Network™ may not record: UNEXPECTED ISR.)
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