Digital Displays - Beckman Coulter Allegra X-5 Instructions For Use Manual

TIME
ACCEL
DECEL

Digital Displays

Digital displays indicate rotor speed, run time, and numbers that represent selected acceleration
and deceleration profiles (see
entered parameters, before the power was turned off. The displays serve a dual purpose:
• When the run parameters are being set (the input mode), the displays show the set values
(those selected by the operator). When a run parameter key (for example,
pressed, the appropriate display flashes to indicate that data can be entered.
• The actual (real-time) operating conditions of the centrifuge are displayed during the run, after
START
is pressed.
NOTE
Error messages (see
centrifuge emits a series of audible tones to alert the user to an error condition.
Figure 1.6 Digital Displays
PN B29071AE
The TIME key is used to select the run duration. When the TIME key is pressed, the last
digit on the TIME display flashes, indicating that the time can be entered with the
cursor keys.
• Timed run — Run time up to 9 hours and 59 minutes can be set. If the minutes
parameter exceeds 59, it is automatically converted into hours.
• Continuous run — If a run time of less than 1 minute or more than 9 hours and
59 minutes is selected, continuous operation is activated, and an infinity symbol
(∞) is displayed. Time is not counted down, and the run continues until the STOP
key is pressed.
The ACCEL key is used to select acceleration rates that protect delicate gradients.
When the ACCEL key is pressed, the ACCEL/DECEL display flashes, indicating that one
of ten preset rates can be entered with the cursor keys (9 is the fastest rate and 0 is
the slowest rate). Acceleration rates are described in
Acceleration/Deceleration Times (in
The DECEL key is used to select deceleration rates that maintain optimum separation
while protecting delicate gradients. When the DECEL key is pressed, the ACCEL/DECEL
display flashes, indicating that one of ten preset rates can be entered with the cursor
keys (9 is the fastest rate and 0 is a no-brake coast to stop). Deceleration rate
selections are described in
minutes:seconds).
Figure 1.6). When the power is turned on, they show the most recently
Table 3.1, Error Message
CHAPTER 2,
minutes:seconds).
CHAPTER 2, Acceleration/Deceleration Times (in
Chart) also appear on the displays, when applicable. The
Description 1
Controls and Indicators
TIME or RPM ) is
1-7