Buchi K-437, Руководство по эксплуатации, Страница: 22 / 34

6 Operation
22
K-437 Operation Manual, Version A
6 .4 Service menu
Accessing the service menu
K-437
SERVICE
Press the STOP button for approx. 3 seconds.
The service menu will appear. Use the STOP
button to move to the next submenu.
Contrast
The contrast is corrected by pressing the arrow buttons.
Maximum temperature
MAX 440
TEMP
For safety reasons, the maximum tempera-
ture ex works is limited to 420 °C. If a lower or
higher digestion temperature is required, it can
be changed here within a range of between
100 °C minimum and 450 °C maximum.
ATTENTION
Digestion temperatures of over 420 °C may result in a loss of nitrogen. If digestion times exceed 180
minutes, the rise in the temperature at the rack may result in the seals being damaged.
Temperature calibration
OFFSET 420 20
ACTUAL 418 21
If the actual temperature measured is different
from the specified temperature, use the arrow
buttons to correct it.