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.: 999164 / 19/05/2009
page 21 of 75
☞
Maximally permitted pressure: 1.5 bar (absolute).
☞
Attention
: At pressures above 1080 mbar the pressure transducer gets saturat-
ed, the pressure measurement grows erroneous. Release pressure immediately.
Risk of bursting!
☞
Inside a vacuum system where evaporation occurs, e. g. rotary evaporator, the
vacuum is not uniform, e. g. a condenser acts as pump or the vacuum in the pipe-
line is lower than in the system. This effects the measurement results as well as
the controlling. Therefore carefully choose position where to connect the vacuum
controller. Install the CVC 3000 so that no condensate can flow towards the pres
-
sure transducer. Clean pressure transducer if necessary, see section ”Cleaning
the pressure transducer”.
Assembling the hose nozzle with union nut at the inlet:
➨
Take the hose nozzle with attached compression ferrule
and union nut out of the round bottom flask 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 17 for final installation.
The catchpot at the inlet prevents droplets and particles from
entering the pump.
☞
Lifetimes of diaphragms and valves are enhanced.
☞
Improves vacuum in case of condensation.
Round bottom flasks (PC 300x VARIO):
Both round bottom flasks are coated with a protective layer to
prevent disintegration in case of breakage or implosion.
➨
Assemble the catchpots at the inlet and at the outlet using
joint clips.
PC 301x VARIO:
➨
Assemble the inlet catchpot with centring ring and clamp-
ing ring at the inlet of the pump.
➨
Assemble the collecting flask at the exhaust waste vapour
condenser using joint clips.
➨
Install a vacuum connection (hose) between the pressure
transducer (measurement connection at the rear of the
CVC 3000) and the vacuum system.
catchpot at
outlet
Pumping units PC 30xx VARIO
with separator at the inlet and exhaust waste vapour condenser at the outlet:
☞
Connect the vacuum connection of the controller via hose or PTFE tubing to the
vacuum application. The diameter of the pipelines should be as large as possi-
ble.
catchpot at inlet
drain screw
CVC 3000
The CVC 3000 is equipped with an internal capacitive pressure transducer with ce-
ramic diaphragm to measure the actual pressure independently of the gas type and
with reference to the vacuum, i. e. absolute.
Pumps NT VARIO and VARIO-B:
☞
Connect the controller CVC 3000 via the VACUU•BUS cable of the NT VARIO or
VARIO-B pump to the diaphragm pump.
Attention
: Do not cant when assembling
or removing plug connections! Obey correct positioning of the plug. To connect
further components use Y-adapters and extension cables VACUU•BUS.
PC 300x VARIO
15
16
8
catchpot at inlet
