Overloading Rotors; Operating Instructions; Attaching Rotor Lid; Closing The Lid - Labnet Spectrafuge 24D Instruction Manual

7.5 Overloading Rotors

The maximum load of the rotor and the maximum speed have been established by the manufacturer. Do not attempt to exceed these
values. The maximum speed of the rotor has been measured for liquids having a homogeneous density of 1.2 g/mL or less. In order to
centrifuge liquids with a higher density it is necessary to reduce the speed. NOTE: Failure to reduce the speed may result in damage to
the rotor and centrifuge. The revised maximum speed can be calculated with the following formula:
Example:
Where the density of the liquid is 1.7, the new maximum speed would be calculated as follows:
If in doubt concerning maximum speeds, please contact the manufacturer for assistance.

8.0 Operating Instructions

CAUTION: Never attempt to operate the centrifuge with rotors or adapters that show signs of corrosion or mechanical
damage. Never centrifuge strongly corrosive materials that may damage the rotors, accessories, or bowl of the unit.

8.1 Attaching Rotor Lid

After the rotor has been properly secured and loaded, attach the rotor lid to the rotor. Always use the rotor lid for safety and to
allow the rotor to reach proper speed. Make sure the rotor lid snaps securely into place, by pressing down on center catch.

8.2 Closing the Lid

Close the centrifuge lid. This microcentrifuge has a lid lock that activates only when a run is started.

8.3 Lid Release

The lid will remain locked during a centrifuge run. Once the run has been completed and the rotor has come to a stop, a beep will
indicate the end of a run, and the lid will unlock automatically.
CAUTION: Do not attempt to open the lid of any centrifuge until the rotor has come to a complete stop.
In the event of a power failure or malfunction, it may be necessary to open the lid manually.
1. Disconnect the power cord from the wall socket.
2. Remove the plastic plug, located on the left side of the unit.
3. Pull the wire (attached to the plug) to open the lid lock manually.

8.4 Lid Lock

The centrifuge can be started only when the lid is securely closed. When a run is started, the lid lock automatically activates.
CAUTION: Do not attempt to open the lid during a centrifuge run. At the end of the run, the lid will automatically unlock. Never
attempt to override the lid lock mechanism. Doing so is dangerous and could damage the centrifuge.

8.5 Speed Selection

The speed (rpm or g-force) can be selected from 500 to 13,300 rpm in 100 rpm increments or from 100 to 16,300 x g with the knob
on the right. Rpm or g-force display is set by pressing the knob. Turn the knob to increase or decrease the value.
4 | LABNET SPECTRAFUGE 24D MICROCENTRIFUGE
Reduced speed (n ) =
red higher density value
1.2
n =
red 1.7
1.2
x max. speed (n
x 13,300 = 11,174 rpm
)
max