VWR 1814 Serie Manuel D'instructions page 6

Operation
1. Inspect the rotor and inner centrifuge surfaces for cracks and crazing.
2. Load the rotor with sample tubes. Note: It is recommended that the rotor be loaded
and the lid placed on the rotor while the rotor is out of the centrifuge.
3. Always use the rotor cover on the rotor. Press the rotor cover onto the rotor by
applying pressure and twisting slightly.
4. Open the centrifuge lid and press the rotor onto the octagonal rotor drive spindle. The
rotor is precision balanced for quiet operation at maximum speed. To minimize
vibration and maintain quiet operation, the point of the black arrow on the underside of
the rotor should be aligned with the black mark on the octagonal drive spindle.
5. Close the lid and select the mode of operation
Modes of Operation - Normal
To program for normal operation, do the following:
1. On the right hand side of the microcentrifuge, press the MODE key once to select
RPM or g-force as indicated by the Display Mode Indicator.
2. Press either the up or down arrow key to select the desired speed or g
3. To set the TIME, press either the + or - key to select the desired run time.
4. Press lightly on the lid, while pressing the GREEN start key to begin the run.
5. You will hear a BEEP at the end of the run when the lid lock is released. To stop the unit
before the time period expires, press the RED stop key.
Modes of Operation - Pulse
To program for PULSE operation, do the following:
1. Select RPM or g as previously explained.
2. Set the time to ZERO
3. Press lightly on the lid
4. Press and hold the GREEN start key. The time will count up in seconds.
5. Release the GREEN start key to stop.
6. You will hear a BEEP at the end of the run when the lid lock is released.
Manual Lid Lock Release
Should a power failure occur while the centrifuge is in operation, the lid of the centrifuge will
remain locked until power is restored. However, it is possible to gain access to valuable
samples by releasing the lid lock manually.
1. Locate the plastic release button on the front of the centrifuge.
2. Pry the button out of the centrifuge housing.
3. A wire is attached to the button. Once the button is free of the housing, tug firmly on
the button and wire to release the lid lock.
4. The lid of the centrifuge can now be opened and samples removed.
5. Before operating the centrifuge again, replace the release button.
NOTE: Do not attempt to operate the release while the rotor is spinning.