VACUUBRAND PC 3012 VARIO plastic housing - Manual (Page 41)

page 41 of 129
Connect the vacuum connection of the controller via hose
or PTFE tubing to the vacuum application. The cross-sec-
tion of the tubing should be as large as possible.
Inside a vacuum system where evaporation occurs, e.g.,
a rotary evaporator, the vacuum is not uniform. For ex-
ample, a condenser can act as a pump, or the vacuum in
the connecting tubing can be higher or lower than in the
application itself. This affects the measurement results as
well as the control levels. Therefore, carefully choose the
position where to connect the vacuum controller sensor.
Position the controller CVC 3000 and its vacuum line in
such a way that condensate cannot flow towards the pres-
sure transducer.
Condensate and deposits will affect the measurement re-
sults. Clean the pressure transducer, if necessary. See
section “Cleaning the pressure transducer”, pg. 81.
Pumping units PC 30xx VARIO with separator (at inlet)
and exhaust waste vapor condenser (at outlet)
Carrying the pumping units PC 3002 / PC 3003 / PC
3004 VARIO:
Hold the pumping unit with one hand at its handle and tilt
it slightly backwards.
Reach with the other hand underneath the pumping unit
and lift the pumping unit.
Or: Use the recessed grips on the side of the pump (below
pump heads). Do not grab if the pump is hot.
Attention: Do not grab the pumping unit at the holders of
the waste vapor condenser or of the catchpot!
Assembling the hose nozzle with union nut:
➨
Take the hose nozzle with attached compression fer-
rule and union nut out of the catchpot and put onto
inlet connection.
➨
Tighten the union nut by hand until you can feel the
stop. Then tighten an additional 1/4 rotation with an
open-ended wrench (size 17mm) for final installation.
NOTICE