Setting Acceleration And Deceleration Rates; To Activate Both Soft-Start And Soft-Stop Functions - Beckman Coulter Microfuge 20 Series Instructions For Use Manual

2
Press the
Once the rotor reaches 1/3 of the maximum rotor speed (5000 RPM) and the precool
temperature value is reached and remains stable for one minute, the program ends with the
indication
NOTE
If the precooling program is selected and then deselected without actually being started, the set
temperature will be reset to the old value. If, however, the precooling run is started, the limited set
temperature will also be used for the following runs, but it will not be saved in the program.

Setting Acceleration and Deceleration Rates

Microfuge 20 series centrifuges feature two acceleration rates — fast and soft (or slow), and two
deceleration rates — fast and soft (or slow). See below for actual times of fast and soft acceleration
and deceleration by rotor.
Table 2.1 Acceleration and Deceleration Rates by Rotor (in minutes:seconds)
Rotor
FA241.5
FA241.5P
FA4x8.2P
FA361.5
a. Times are approximate; actual times vary depending on the the rotor load, run speed, and
voltage fluctuations.

To activate both Soft-start and Soft-stop functions

1
Press the
Program mode ends if no other keys are pressed within 15 seconds.
2
Press the
Both soft-start and soft-stop functions are now activated.
3
Press the
B30162AA
key.
START/STOP
.
Precool OK
Microfuge 20
Acceleration Deceleration
Fast Soft Fast
0.26 1:03 0:22
0:16 1:03 0:16
0:11 1:03 0:13
0:26 1:03 0:22
key until the
MENU Soft-stop/start
or cursor key until the
key to confirm the selection.
MENU
Microfuge 20R
Acceleration
Soft Fast Soft
1:05 0:26 1:02
1:05 0:16 1:02
1:05 0:11 1:02
1:05 0:26 1:02
function flashes on the display.
is displayed.
Soft-stop/start on
Run Procedure
a
Deceleration
Fast Soft
0:22 1:05
0:16 1:05
0:13 1:05
0:22 1:05
2
Operation
2-9