Rotor Code Selection; To Select The Correct Rotor; Precooling The Centrifuge (20R Refrigerated Models Only); To Precool The Centrifuge - Beckman Coulter Microfuge 20 Series Instructions For Use Manual

Operation
Run Procedure

Rotor Code Selection

Select the installed rotor to allow for the correct RCF value to be selected and displayed.
NOTE
All of the available rotors for the Microfuge 20 and Microfuge 20R have the same rated speed
of 15,000 RPMs.

To select the correct rotor

1
Press and hold the
2
Press the
Rotor codes
• Code 1: Not used
• Code 2: FA241.5
• Code 3: FA241.5P
• Code 4: FA4x8.2P
• Code 5: FA361.5
• Code 6: Not used
3
Press the
The rotor code setting will be saved after approximately 15 seconds if no other key is pressed
within this time period.
4
Install the rotor. See the specific rotor manual for complete information.

Precooling the centrifuge (20R refrigerated models only)

To maintain sample integrity during low temperature runs it is recommended to precool the empty
rotor and instrument prior to the run. This centrifuge has a special program that precools the
centrifuge under defined conditions.
NOTE
Once the precooling program is loaded, the set temperature can only be set to values below the actual
temperature. If the limits of the setting range are reached during the setting process, the temperature
display flashes for approximately one second.

To precool the centrifuge

1
Press the
The display shows 1/3 of the maximum rotor speed and the corresponding RCF value. The
runtime field indicates ' ¥' (continuous run). The set temperature cannot be higher than the
actual temperature.
2-8
key until the rotor unit flashes on the display.
MENU
or cursor key until the correct rotor is displayed.
key to confirm the selection.
MENU
key to load the precooling program.
PRECOOL
displays.
Precool on
B30162AA