Setting The Brake Step; Centrifugation; Centrifugation With Preselected Time; Continuous Operation - Hettich EBA 20 Bedienungsanleitung

11

Setting the brake step


Switch off the mains switch.

Keep the key beneath the speed indicator and the key

Switch on the mains switch and release the keys again.
The speed indicator shows the machine version and the time indicator shows the set brake step: e.g.:
RPM x 100 t
If the machine version and brake step are not displayed, press the
displayed.
The machine version is set by the manufacturer and cannot be changed.

Set the desired brake step with the keys
Step 1 = short run-down time, Step 0 = long run-down time.
For run-down times, see chapter "Anhang/Appendix, Rotor und Zubehör/Rotor and accessories".

Press the key to save the setting.
STOP
12

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.
The centrifugation run can be interrupted at any time by pressing the key
The time and speed can be changed during the centrifugation run, with the keys
If the key or is kept pressed, the value changes with increasing speed.
After a centrifugation run, the display flashes until the cover is opened or a key is pressed.
If the symbol " " (lid closed) and " " (lid open) flashes alternately in the rotation indicator
centrifuge can only be continued after opening the lid.

Switch on the mains switch (switch position "").

Load the rotor and close the centrifuge cover.
12.1

Centrifugation with preselected time


Set the desired speed with the keys

Set the desired time with the keys

Press the key . The rotation indicator
START
The time is displayed in minutes. The last minute is counted down in seconds.
When the time is displayed in minutes, a point flashes next to the number.

After expiry of the time or if the centrifugation run is interrupted by pressing the key
with the set brake step.
During the centrifugation run the rotor speed and the remaining time are displayed.
12.2

Continuous operation


Set the desired speed with the keys

Set the time to zero with the key

Press the key . The rotation indicator
START
The first minute is counted up in seconds, and then the time is displayed in minutes.
When the time is displayed in minutes, a point flashes next to the number.

Press the key to end the centrifugation run. The rotor runs down with the set brake step.
STOP
During the centrifugation run the rotor speed and the expired time are displayed.
START
RPM x 100
STOP
beneath the time indicator.
beneath the speed indicator.
beneath the time indicator.
appears while the rotor is turning.
beneath the speed indicator.
beneath the time indicator. "--" is displayed.
appears while the rotor is turning. The time count starts from 0.
pressed simultaneously.
START
t
STOP
key under the speed indicator until they are
.
STOP
STOP
EN
.
, operation of the
, the rotor runs down
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