Precooling Of The Rotor; Time-Controlled Cooling; Prevent Cooling Being Switched On During Run-Out - Hettich ROTINA 380 Mode D'emploi

EN
33.2

Precooling of the rotor

For quick precooling of the unloaded rotor and the accessories, it is a good idea to do a centrifugation run with
the continuous operation setting and a speed of about 20% of the maximum rotor speed.
The precooling is done automatically with the PREC (PRECOOLING) program.
Precooling is not possible if program linkages are being used.

Press the key. The LED in the
count starts from 00:00.

Press the key to end the centrifugation run. Run- down is carried out with the selected run- down
OPEN / STOP
parameters. The run-down parameter is displayed e.g.
Once the rotor has come to a standstill, the LED in the
displayed. The right-hand LED in the
starts blinking and continues blinking until the lid is opened.
During the centrifugation run, the speed of the rotor, or the resulting RCF value, the sample temperature and the
remaining time or expired time are displayed.
33.3

Time-controlled cooling

If necessary it can be set so that cooling begins after a certain amount of time once centrifugation run has been
started.
The delay time can be set in 1-second increments from 15 to 900 seconds. If no time delay is required, set to "0". No
delay time is set ex works.
When the rotor is at a standstill, the delay time can be set as follows:

Keep the key held down for 8 seconds.
PROG
After 8 seconds,  Machine Menu  appears in the display.

Press the key as often as necessary until the ->Settings is displayed.
PROG

Press the key. The SOUND / BELL = off/on is displayed.
START

Press the key as often as is needed until the delay time is displayed, e.g. Cool acc time = 0.
PROG

Use the adjusting knob

0 = no delay time

Press the key to save the setting.
START
Briefly, Store Settings ... is displayed as confirmation, followed by -> Settings.

Press the key once to leave the "Settings" menu or press the
OPEN / STOP
"Machine Menu".
33.4

Prevent cooling being switched on during run-out

If necessary it can be set so that at the end of the centrifugation run during run-out, once the specified speed has
been attained, cooling is not switched on.
This avoids whirling up the sediment in the sample.
The speed can be set between 0 RPM and the maximum speed of the rotor (Nmax) in increments of 10.
When the rotor is at a standstill, the speed is set as follows:

Keep the key held down for 8 seconds.
PROG
After 8 seconds,  Machine Menu  appears in the display.

Press the key as often as necessary until the ->Settings is displayed.
PROG

Press the key. The SOUND / BELL = off/on is displayed.
START

Press the key as often as is needed until the Cool dec speed = ... rpm.
PROG

Use the adjusting knob

Press the key to save the setting.
START
Briefly, Store Settings ... is displayed as confirmation, followed by -> Settings.

Press the key once to leave the "Settings" menu or press the
OPEN / STOP
"Machine Menu".
64/165
key blinks until the rotor has been imported, it is subsequently lit. The time
key also switches off, the left LED in the
OPEN / STOP
to set the value you want.
to set the value you want.
9. The right-hand LED in the
key switches off and
OPEN
OPEN / STOP
OPEN / STOP
key is lit.
OPEN / STOP
OEFFNEN is
key
OPEN / STOP
key twice to leave the
key twice to leave the