Thermo Electron SORVALL RC3BP, Operating Instructions Manual

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3-17
RC3 BP™ Controls, Indicators, and Displays
DRIVE FAULT DETECTED – CALL SERVICE
The microcomputer detected either that the drive motor is
not responding, or that the tachometer circuit has failed.
Wait for the rotor to stop spinning (this could take as long as
20 minutes), then use the mechanical override to remove all
sample from the rotor, unplug the centrifuge and contact
Thermo
Service. Read the WARNING . (WatchLog Network™
record: incomplete, DRIVE.)
FLOOR TEMP SENSOR FAILURE
The chamber floor temperature sensor has indicated either a
temperature above 55
°
C, or an open circuit. The fault indi-
cates a sensor failure or a refrigeration problem. After the
rotor stops and the chamber door is opened, note if the
chamber is warm – if so, the rotor may be too hot to touch.
Unplug the centrifuge and contact
Thermo
Service.
(WatchLog Network™ record: incomplete, FLOOR SEN-
SOR.)
ROTOR OVER MAX SPEED – CONTACT SERVICE
Speed was more than 200 rpm higher than the rotor's maxi-
mum rated speed, indicating improper speed control or a
faulty tachometer circuit. Remove all sample from the rotor
after it stops, then unplug the centrifuge and contact
Thermo
Service. (WatchLog Network™ record: ROTOR OVER-
SPEED.)
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 20 minutes), then use the mechanical override to
remove all sample from the rotor, unplug the centrifuge and
contact
Thermo
Service. Read the WARNING . (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 20
minutes), then use the mechanical override to remove sample
from the rotor, unplug the centrifuge and contact
Thermo
Service.
Read the WARNING
. (WatchLog Network™ may
not record: incomplete, UNEXPECTED ISR.)
3-17/3-18
!
W A R N I N G
Do not open the chamber
door when the rotor is spinning. In
the event of a tachometer failure (or
any failure where RUN speed does
not register), the brake will not operate
and the rotor will coast to a stop –
from high speed, deceleration to 0
could take 20 minutes or more. Before
using the mechanical override to open
the chamber door, use the viewing
port in the door to make sure that the
rotor has stopped spinning. Opening
a chamber door when a rotor is
spinning exposes hazardous energy;
contact with a spinning rotor could
cause personal injury.