Notice – VACUUBRAND VNC 2 E User Manual

Page 19

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.: 999199 / 28/11/2012

Notes on configuring the controller

Time delay

• At the end of the process the coolant continues to flow according to the preset time delay. If an in-line

valve is connected, a connected pump also runs for the preset time delay with in-line valve closed for

self cleaning.

Notes on selecting the factory-set configuration

The controller VNC 2 can be adapted optimally to the specific application by choos-

ing the appropriate factory-set mode depending on the components, the application,

and the process.

Automatic valve detection:

When switching on, the controller checks the actual valve configuration. If a valve is

connected, it is monitored and operated automatically until the controller is switched

off. In-line valves and coolant valves are monitored equally.

The preselected values from last operation (e.g. for pressure, speed or switch-off

time) are stored. In case of similar operation conditions it is possible to start immedi-

ately, if the preselections are chosen appropriately.

If selecting another factory-set mode (keep key ”Esc” pressed while switching on),

the configuration for this mode is adopted, the actual configuration gets replaced.

Factory-set mode ”Vacuum control” (pControl)

Controller controls

- pump and / or isolation valve according to preset pressure in two-point control or

continuous pumping

- coolant valve

Vacuum control (pControl): Two point control with 5 minutes time delay.
p set

: 25 mbar, ∆p: Auto, t Off: off, limit: 1060 mbar.

Changing the factory-set configuration:

Keep key ”Esc” pressed while switching on the controller. Select the configuration by

pressing key t or s and confirm by pressing key ”Enter”.

Attention: For factory-set configurations other than ”Vacuum control” (pCon-
trol

) please order separate instructions for use!

NOTICE