Labnet Z400K High Capacity Centrifuge - Manual (Page 13)

Z 400 K / March 1997 13 E
4.6 Preselection of temperature and pre-cooling
Pre-cooling: Pre-cooling: Pre-cooling: Pre-cooling: Pre-cooling:
To avoid considerable temperature deviations at the beginning of an operation at
low temperatures, pre-cool the centrifuge together with the rotor before insertion
of the samples.
For pre-cooling please proceed as under:
1. Insert a rotor into the centrifuge and secure it correctly to the motor shaft.
2. Set the desired working temperature.
3. To shorten the pre-cooling process, set a speed which is about 20% of the
maximum speed indicated for the rotor.
4. Start the centrifuge.
5. Within 10-15 minutes the centrifuge should reach the selected temperature.
Preselection of temperature:
Preselection of temperature: Preselection of temperature: Preselection of temperature: Preselection of temperature:
3 2 1
With the centrifuge lid open, the temperature can be set with the knob (1).
With the centrifuge lid closed or during a run you have to press additionally key
"preset" (3) to change or set the temperature.
The temperature can be preselected from -10°C up to +40°C.
With open lid the temperture display shows the preset temperature and with a
closed lid or during a run the display shows the actual rotor temperature.