Thermo Electron SORVALL RC3BP, Operating Instructions Manual

Page: 25 / 64

3-8
Controls, Indicators, and Displays SORVALL

Centrifuges
If, during the QC RUN, an observed RUN display temperature
is not within
±
2
°
C of SET temperature (as could be the case
when there is a significant temperature change with a short
run), the centrifuge will continue to repeat that step of the QC
RUN sequence until the observed temperature is within range.
The data will not be logged until the programmed run is
completed successfully, at which time the centrifuge will move
on to the next set of programmed parameters.
NOTE
If you plan on using the QC RUN feature, consider the
following as you save runs to program memory:
• QC programs should all apply to using the same rotor.
• QC RUN programs should not use HOLD.
• Programs with SPEED=400 rpm, TIME=00:00, and
TEMP=40 will be ignored in the QC RUN sequence.
• Although you may choose otherwise, to minimize the
time it takes to perform a QC RUN, we recommend
the following: Starting with program 1, save runs to
program memory in order – sorted first by temperature
(highest first), then, if there is more than one run at a
single temperature, by speed (lowest first).
ROTOR SPEED TIMED DEG C PROG #
H6000A 2900 04:00 22 1
H6000A 4000 03:00 22 2
H6000A 3800 03:45 4 3
H6000A 5000 05:30 4 4
H6000A 400 00:00 40 5
While the QC RUN sequence is in progress, the centrifuge will
output (to a connected computer) the observed speed and
temperature along with the SET speed and temperature for
automatic data logging and simple performance verification.
• SLOW START chooses gentle acceleration from 0 to 250 rpm
(acceleration transitions to the normal, maximum rate at 250
rpm), with the slow start rate defined by selection of one of ten
different acceleration profiles. The profiles are numbered for
ease of selection, with number 1 being the slowest, most gradual
rate, and each successive rate being incrementally faster up to
number 10.
• SLOW STOP chooses gentle deceleration from 500 to 0 rpm
(normal deceleration braking from set speed transitions to the
more gradual rate at 500 rpm), with the rate defined by selection
of one of ten different deceleration profiles. The profiles are
numbered for ease of selection, with number 1 being the slowest,
FOR EXAMPLE :
The programs at right are listed in correct
order for using QC RUN; PROG # 5 will
be ignored by the centrifuge when
performing the run (program values shown
are for example purposes only, actual set
parameters will vary).