Thermo Electron SORVALL RC3BP, Operating Instructions Manual

Page: 55 / 64

Maintenance SORVALL

Centrifuges
5-6
7. After termination, immediately after the rotor stops and the
door unlocks, open the chamber door and measure the
sample temperature using the same calibrated thermometer
used earlier.
The measured sample temperature should be within 2
°
C of SET
temperature. If required, repeat this procedure at any other
speed/temperature ranges that are commonly used in your run
protocols.
If an out-of-range temperature is observed, re-equilibrate the
chamber, rotor, and test fluid temperatures to match desired
sample temperature, and repeat the test run.
Emergency Sample Recovery
If the main power shuts off because of a power failure or a system
malfunction while the rotor is spinning, the
RC3 BP™ chamber
door will not open. A mechanical override is provided to allow
sample recovery in the case of an emergency. This procedure should
never be used routinely, or while the rotor is spinning, and is
intended for emergency sample recovery only.
Read the WARN-
ING .
The mechanical door release lever is inside in the back cabinet
panel (see figure 5-2). To open the chamber door, insert a small
screwdriver or similar tool through the hole in the grommet, and
push the door release lever in (toward the front of the centrifuge).
Then (while holding the release lever in) lift the door latch handle
and pull the door open.
W A R N I N G
Do not open the chamber
door when the rotor is spinning. In
the event of a power 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.
!
Figure 5-2. Location of Mechanical Door Release Lever
MECHANICAL
DOOR RELEASE
LEVER