VACUUBRAND MV 2 VARIO - Manual (Page 15)

page 15 of 41
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.: 999035 / 15/12/2009
☞ Condensate and deposits in the pressure transducer affect the measuring result.
☞ In case of deposits, aggressive or condensable media, install a gas washing bottle before the pressure
transducer if necessary.
☞ In order to avoid malfunction it is important to position the pressure transducer in the vacuum line so as
to avoid flow of condensate towards the pressure transducer.
☞ Clean pressure transducer if necessary, see section ”maintenance”.
gauge head
VSK 5
Shutdown:
Short-term:
Has the pump been exposed to condensate?
➨ Allow the pump to continue to run at atmospheric pressure for a few minutes (con-
tinuous pumping, setting ”HI”).
Has the pump been exposed to media which may damage the pump materials or forms
deposits?
➨ Check and clean pump heads if necessary.
Long-term:
➨ Take measures as described in section short-term shutdown.
➨ Separate pump from the apparatus.
➨ Close inlet and outlet port (e. g. with transport caps).
➨ Store the pump in dry conditions.
Max. permitted pressure at the pressure transducer: 1.5 bar (ab-
solute).
Attention: Risk of bursting!
☞ The display flashes at a pressure higher than 1100 mbar.
☞ Comply with max. permitted pressure.
☞ Inside a vacuum system where evaporation occurs, e. g.
rotary evaporator, the vacuum is not uniform, e. g. a cold
condenser acts as pump or the vacuum in the pipeline is
lower than in the system. Therefore carefully choose posi-
tion where to connect the gauge head.
➨ Connect the cable of the gauge head to the female connec-
tor at the rear side of the vacuum controller.
➨ Connect the gauge head to the vacuum system by using a
small flange connection or a hose connection.
☞ The device is adjusted together with the gauge head at the
factory. If the gauge head is replaced a readjustment is rec-
ommended.
➨ Connect cable from the frequency converter of the pump to
the controller (rear side): trip line and power supply of the
frequency converter.
female connector to
connect gauge head
VSK 5