VACUUBRAND MZ 2C VARIO - Manual (Page 26)

page 26 of 51
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. manual-no.: 999034 / 22/04/2008
Automatic mode
Additional switching on the automatic mode
➨ Press key MODE.
☞ “Auto” is displayed.
☞ After starting process control, the pressure is adapted to
the process automatically: The controller determines the pres-
sure and adapts if process parameters change.
☞ If automatic mode is switched on while vacuum control is
active, the process pressure is adapted.
Setting of maximum speed:
Setting the value for the speed by using key Mode
▲ or ▼:
☞ To activate set mode: Press key shortly. The current speed
is displayed for one second.
☞ With a second tip within one second or continuous pressing:
☞ Set speed. The new set point is stored when the key is re-
leased.
☞ The reduced maximum speed restricts the evaporation rate
in case of low boiling solvents and a carry over of sub-
stances.
☞ The utilisation of a condenser or a cold trap at the inlet can
be optimised.
☞ ☞ ☞ ☞ ☞ If selecting ”HI” (recommended) for motor speed the
maximum speed for automatic adaption of the motor
speed is restricted to a value corresponding to the sys-
tem size.
10.0
MODE
MODE
MODE
If automatic switching off is preselected and the controller
determinated that evaporation is completely finished:
☞ “Auto“ is flashing.
☞ The pump is switched off. If the controller measures a pres-
sure > 1060 mbar, the pressure is reduced to 1060 mbar to
avoid overpressure.
☞ The controller is still active, the control must be finished by
pressing key STOP or by venting (the coolant valve will not
be closed until then).
To use the advantages of the automatic mode optimal, switch
on ”Auto” before starting the process.
☞ Switching on automatic mode: Press key MODE.
☞ The controller determines the operating pressure.
☞ When activating the automatic mode if process control is
active (after pressing key START) the actual pressure is
stored as new boiling point and adjusted automatically.
Switching off the automatic mode
➨ Press key MODE.
☞ Switching off the automatic mode is possible at any time.
☞ “Auto” disappears.
☞ While vacuum control is active the actual pressure is stored
as new set point.