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15 Programming

15.1 Programme input/alteration

If no key is pressed for 8 seconds long after the selection or during the input of parameters, the previous

values will be shown in the display. The input of parameter then has to be executed again.

• Select the RPM or RCF display with the key

RCF

. RCF values are displayed in > <.

• Select the desired parameters using the button

SELECT

and set using the knob .

In order to set continuous operation, the parameters t/min and t/sec must be set to zero with the knob.

Continual running is represented in the display by the following symbol, "∞".

• The parameter PROG STO can be selected using the button

SELECT

and the desired program position set using

the knob .

• Press the button

START / IMPULS

in order to store the setting on the desired program position. ∗∗∗ ok ∗∗∗ is

displayed briefly as confirmation.

If the key

START / IMPUL

is pressed without the parameter PROG STO being activated, the settings are always

stored in the program place #.

The previous data in the program position is overwritten during saving.

15.2 Programme recall

• Select the parameter PROG RCL using the button

SELECT

and set the desired program position using the knob

• Press the button

START / IMPULS

. The centrifugation data of the selected program position is displayed.

• The parameters can be checked by pressing the button

SELECT

To leave the parameter display press the button

OPEN / STOP

or press no button for a period of 8 seconds.

16 Centrifugation

When the centrifuge is running, according to EN / IEC 61010-2-020, no persons, dangerous substances or

objects may be within the safety margin of 300 mm around the centrifuge.

If the permissible weight difference within the rotor loading has been exceeded, the drive shuts down during

the start-up, the unbalance display lights up, and IMBALANCE is displayed.

A centrifugation run can be stopped at any time by pushing the key

OPEN / STOP

All parameters can be selected and altered during the centrifugation run (see Chapter “Entering centrifugation

parameter”).

You can switch-over at any time between the RPM and RCF display with the key

RCF

. The input of the

centrifugation radius is necessary if you are working with the RCF display.

OPEN OEFFNEN is displayed, a further operation of the centrifuge is only possible after opening the lid

once.

If R xx n-max xxxxx is displayed, then no centrifugation run has taken place as the rotor was changed

beforehand, refer to Chapter " Rotor Identification ".

• Turn on the mains switch. Switch position Ι.

• Load the rotor and close the centrifuge lid.

16.1 Centrifugation with pre-set time

• Adjusting time or recall a programme with pre-set time (see Chapter "Programming").

• Press the key

START / IMPULS

. The LED in the button

START / IMPULS

lights up for as long as the rotor turns.

• After expiration of the time or with truncation of the centrifugation run by pushing the key

OPEN / STOP

, the run-

down is effected with the selected brake step. The brake step is displayed.

During the centrifugation run the rotational speed of the rotor or the subsequently resulting RCF value, the sample

temperature (only in centrifuges with cooling) and the remaining time will be displayed.

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Universal R-320 Operations Instructions Page 38

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