Vacuubrand VNC 1 Bedienungsanleitung PDF herunterladen (Seite 13)

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.: 999118 / 16/12/2009

page 13 of 35

Notes on operation

For operation it is necessary to install valves and/or vacuum pumps.

Max. permitted pressure at pressure transducer: 2 bar (abso-

lute).

☞ The display flashes at a pressure higher than 1060 mbar.

☞ Inside a vacuum system where evaporation occurs, the

vacuum is not uniform. This effects the value of the meas-

ured pressure and such the controlling. Therefore carefully

choose the position where to connect the pressure trans-

ducer.

☞ Condensate and deposits at the pressure transducer falsify

the measurement result.

☞ If residues occur or when working with aggressive or con-

densable substances, install a gas washing bottle in front of

the pressure transducer.

☞ Position controller in such a way, that condensate can

not flow into the pressure transducer.

☞ If necessary, clean pressure transducer, see section ”Clean-

ing the pressure transducer”.

☞ Setting of interface parameters, see ”Interface parameters”.

☞ Presettings at controller, see ”Factory-set modes and menu structure”.

☞ Operating the controller, see ”Working with the controller”.

vacuum connec-

tion

Assignment of pins

1 cooling water valve

2 + 24V

3 isolation valve

4 external error -

5 external error +

6 mass (PWM -)

7 PWM + (speed control signal for VARIO pumps)

8 +12 V

Note: Texts written in Courier font mirror the display of the LCD of the controller.

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Vacuubrand VNC 1 Bedienungsanleitung Seite 13