KNF LABOPORT SC820G Manual De Instrucciones página 164

Operation
56
The vacuum system is operated from the vacuum controller
with the aid of
à
a rotary knob (Fig. 13/3) and
à
a touchscreen (Fig. 13/1).
The rotary knob has the following functions:
à
Rotate: Change the pump output or adjust the setpoint
pressure (depending on the mode selected).
Change the setpoint settings:
à
CW: Decrease
à
CCW: Increase
à
Press: Interrupt the active process and switch to manual
process control (in this case, pressing begins evacuation).
Different functions can be initiated depending on whether
the knob is pressed briefly or for a longer time:
à
Press briefly:
Starts a process or stops the current pumping phase
and switches to temporary pressure regulation at the
current pressure value
à
Press for longer:
Pressing for a longer period during temporary pres-
sure regulation initiates a manual evacuation instruc-
tion until the rotary/push knob is released again. The
new pressure value is used as the new setpoint value
for temporary pressure regulation.
Contents of the touchscreen:
à
Displays of the most important process variables (Fig. 14);
à
Menus for selecting the mode (Fig. 15/1).
à
Menus for selecting the unit for the pressure display (Fig.
16/4).
à
Operating buttons (Fig. 15) with the functions:
à
Starting and stopping a process (4);
à
Opening and closing the venting valve (2);
à
Opening and closing the coolant valve (accessory) of
the condenser (3).
Translation of Originial Operating Instruction, KNF 339416-339418 02/23
Vacuum system SC820G / SC840G