6 | Operation
BÜCHI Labortechnik AG
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Operation Manual Interface I-300 Pro
Fig. 60: Selecting "eco mode"
6.7
Setting hysteresis
The hysteresis setting is only relevant if the distillation system is not being operated
with a BUCHI Vacuum Pump V-300 but with a different make of pump or with a labo-
ratory vacuum supply, and is controlled by means of a valve.
The hysteresis setting ensures precise pressure regulation by the valve or the valve
unit. The hysteresis is the maximum allowed deviation of the vacuum from the speci-
fied setting before the system corrects the pressure. The pump is switched off/valve is
closed when the vacuum has reached the lowest possible pressure. If the pressure
rises and the set hysteresis is exceeded, the pump is switched on again/the valve
opened again.
Navigation path
➔
Configuration
➔
Settings
➔
Pressure hysteresis
u
Navigate to the "Settings" screen and select the menu item "Pressure hysteresis",
see Chapter 6.1 "Navigating the menu", page 44.
Fig. 61: Setting pressure hysteresis