Thermo Electron SORVALL RC3BP, Operating Instructions Manual

Page: 43 / 64

Operation SORVALL

Centrifuges
4-8
To select the QC RUN feature, press MENU, input 1, install the
correct rotor, make sure WatchLog Network™ is running on the
connected computer, and press START. The QC RUN sequence
will begin, running program number 1, and the run status will
be displayed on the WatchLog Network™ computer screen.
If, during a QC RUN, the observed RUN temperature is more
than 2
°
C over SET temperature, the DEG C field in the SET
display will change to P-COOL. If the temperature is not within
2
°
C as a program is completed, the centrifuge will automatically
repeat that step of the QC sequence. That program will continue
repeating until observed temperature is within 2
°
C.
As each program is completed, WatchLog Network™ will record
the observed conditions from the completed program in the
database. If STOP is pressed during the QC RUN sequence,
WatchLog Network™ will record the data from the program
running at the time STOP was pressed, but will label that data
incomplete. After the rotor decelerates to zero and the door is
opened, the QC RUN option will return to a deselected condition,
and the LED status indicator will no longer be lit.
SELECT SLOW START?
This screen allows you to select a starting rotor acceleration rate
(to 250 rpm) that is more gentle than normal, maximum accel-
eration. If SLOW START is selected when START is pressed, the
rotor will accelerate at a more gradual rate up to 250 rpm, then
transition to normal, full acceleration to SET speed.
After selecting the SLOW START option, entering 1-10 selects
one of ten available starting rates, with 1 being the slowest
acceleration, and each successive setting incrementally faster,
up to a setting of 10. After SLOW START selections are com-
pleted, SELECT SLOW STOP? will appear in the display.
SELECT SLOW STOP?
This screen allows you to select a slow stop deceleration rate
(from 500 rpm) that is more gentle than a normal, full braking
stop. If SLOW STOP is selected, at run termination the rotor will
decelerate under full braking to 500 rpm, then transition to a
more gradual deceleration rate to stop. After selecting the SLOW
STOP option, entering 1-10 selects one of ten available stopping
rates. Entering 1 selects the slowest rate, and each successive
setting incorporates incrementally more braking up to a setting
of 10. After SLOW STOP selections are completed, SELECT
BRAKE OFF? will appear in the display. Selection of BRAKE
OFF will have an affect on SLOW STOP
(see the NOTE under
BRAKE OFF).