Eppendorf C5702 RH Centrifuge - Manual (Page 14)

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When working with Ficoll ® density gradients or other sensitive applications (e.g. certain types of blood and urine
centrifugations) slower acceleration and braking ramps can be switched on for the Centrifuge 5702 / 5702 R / 5702 RH.
This makes the centrifuge accelerate and decelerate gently. This guarantees optimal centrifugation results.
Press the SHORT key for longer than 5 seconds while the centrifuge lid is open. On the Centrifuge 5702, the text in the
display changes from "br on" (brake on) to "br OF" (brake off). The symbol
appears in the display of Centrifuges
5702 R / RH. The slower acceleration and braking ramps are now activated. The current status will be displayed when the
SHORT button is pressed for less than 5 seconds while the centrifuge lid is open.
To switch faster acceleration and braking back on, press the short key for longer than 5 seconds again while the centrifuge
lid is open. The "br on" message appearing briefly in the display signals the reactivation of the faster acceleration and
braking ramps.
For centrifugation, time can be counted either immediately from the start or not until attainment of the preset speed.
Pressing the START / STOP button for longer than 2 seconds with the centrifuge lid open switches the "at set rpm" mode,
symbolized by the pictogram
.
To exit the "at set rpm" mode again and begin counting down the centrifugation time immediately after starting the
centrifuge, press the START / STOP button again for longer than 2 seconds with the centrifuge lid open until the pictogram
is displayed.
Press and hold down the OPEN button for longer than 2 seconds with the centrifuge lid open to toggle between "b on"
(signal tone on) and "b OF" (signal tone off). Press the OPEN button for less than 2 seconds with the centrifuge lid open to
display the current status. With the Centrifuge 5702 R / 5702 RH the selected signal tone is symbolized by the pictogram
.
The current status is shown when the OPEN button is pressed for less than 2 seconds while the centrifuge lid is open
(Centrifuge 5702).
To secure the centrifuge parameters against unintentional adjustment, the Centrifuge 5702 and the Centrifuge 5702 R /
5702 RH allows you to lock in the parameters you need.
Press and hold down OPEN- and SHORT-button simultaneously for at least 5 seconds with the centrifuge lid open.
After 5 seconds the dial adjuster is disabled and the centrifugation parameters are locked against unintentional
adjustment. "Lo on" appears in the display of the Centrifuge 5702. In the display of the Centrifuge 5702 R / 5702 RH the
locked parameters are symbolized by an additional pictogram
. The preset parameters can then no longer be altered,
whether the centrifuge is running or not. The START/STOP button can still be used to start and stop the centrifuge
however. It is also still possible to switch the signal tone and rcf switch on and off.
With the Centrifuge 5702 R / 5702 RH it is also possible to additionally lock a program called up against unintentional
resetting. A program already written is called up through the program buttons and then – as described above – the
program buttons and dial adjustor setting deactivated.
To enable the dial adjuster again, press and hold down OPEN- and SHORT-button simultaneously for 5 seconds with the
centrifuge lid open. The display shows "Lo OF" or
(5702 R / 5702 RH ). The current status ("Lo on") can be displayed
on the Centrifuge 5702 by briefly pressing the SHORT and OPEN buttons while the lid is open.
3.12 Adjusting the acceleration and braking ramps
soft
3.13 At set rpm
3.14 Activating and deactivating the signal tone
3.15 Parameter lock
Operation
3 Operation
3