Specifications

PN SJ-IM-8AC
1-6
Description
Controls and Indicators
Run-Parameter Keys
Run-parameter keys are used to enter specific run information as follows.
DECEL When the DECEL key is pressed, a number representing the selected deceleration rate
(1 = MAX, 2 = SLOW, 3 = OFF) can be entered. If no number is entered, the
instrument decelerates at the rate set for the previous run.
PROGRAM • During setup — when the PROGRAM key is pressed a program number (one of nine
possible) can be entered.
• During centrifugation — the number of the program being run is displayed
Pressed to display scrolling list of compatible rotors and rotor entry codes. Can be
pressed repeatedly to scroll more quickly through the rotor list.
If the display shows speed in RPM, the key is pressed once to enter run speed (using
the keypad) in RPM (revolutions per minute); pressed twice to enter run speed in RCF
(relative centrifugal field). If the display shows speed in RCF, the key is pressed once to
enter speed in RCF or twice to enter speed in RPM.
Pressed to enter run time using the keypad. When TIME is pressed twice, HOLD mode
is selected. (Pressing it again reverts to time-entry mode.)
• Timed run — Run time up to 99 hours and 59 minutes can be set. If more than
59 minutes are entered in the minutes field, the system automatically converts the
entry to hours and minutes. Deceleration begins when the set time counts down
to zero.
• Continuous run (hold) — For runs of unspecified lengths, hold mode is used. When
99 hours, 59 minutes is reached, the system resets to 0 and continues counting. A
hold run continues until the STOP key is pressed.
Pressed to enter run temperature (using the keypad), from –10 to +40°C. If a new
temperature is not entered, the centrifuge uses the temperature set for the
previous run.
The centrifuge has two acceleration profiles: MAX — maximum acceleration from
0 RPM to set speed, or SLOW — slow acceleration from 0 to 500 RPM, followed by
maximum acceleration to set speed. The ACCEL key is used to select the maximum
acceleration or slow acceleration, provided to maintain optimum separation.
The centrifuge has three deceleration profiles: MAX — full dynamic braking to 0 RPM;
SLOW — brake to 500 RPM followed by reduced braking to a gentle stop; OFF (coast
from set speed to stop). The DECEL key is used to select the deceleration rate provided
to maintain optimum separation.
A toggle switch used to enter into and exit out of the program mode to create or recall
programs. When the key is pressed, the program number can be selected using the
keypad.
Saves the program in memory after program run parameters have been entered.