vacuubrand MD 8C VARIO User manual

page 1 of 51
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.: 999073 / 15/12/2009
Chemistry pumping units with speed control
MD 8C VARIO
MV 10C VARIO
PC 2008 VARIO
PC 2010 VARIO
PC 2012 VARIO
Instructions for use
Technology for Vacuum Systems

page 2 of 51
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.: 999073 / 15/12/2009
After sales service: Contact your local dealer or call [phone].
Dear customer,
Your VACUUBRAND diaphragm pump shall support you at your work for a long time without any trouble
and with full load output.Thanks to our large practical experience we attained much information how you
could add to an efficient application and to personal safety. Please read these instructions for use prior to
the initial start-up of your pump.
VACUUBRAND diaphragm pumps are the result of many years of experience in construction and practical
operation of these pumps combined with the latest results in material and manufacturing technology.
Our quality maxim is the ”zero fault principle”:
Every delivered diaphragm pump is tested extensively including an endurance run of 18 hours.Due to this
endurance run, also faults, which occur rarely, are reported an can be corrected. Every single diaphragm
pump is tested on achievement of the specification after the endurance run.
Every VACUUBRAND pump leaving our factory achieves the specification.We feel obliged to this
high quality standard.
We are aware that the vacuum pump should not draw a part of the real work and we hope to contribute
with our products to an effective and troublefree realisation of your work.
Yours
VACUUBRAND GMBH + CO KG

page 3 of 51
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the validity of this document with respect to his product. manual-no.: 999073 / 15/12/2009
Attention! Important notes!
Not permitted! Misuse may cause damage.
Caution! Hot surface!
Isolate equipment from mains.
Note.
Contents
Safety information! ....................................................................................................4
Technical data............................................................................................................ 8
Description ..............................................................................................................12
Notes on operation..................................................................................................14
General view basic setups ......................................................................................19
Working with the controller .....................................................................................20
General view basic setup ”vacuum control” ......................................................... 23
Basic setup vacuum control...................................................................................24
Basic setup continuous pumping..........................................................................28
General view basic setup VACUU•LAN .................................................................30
Basic setup VACUU•LAN ........................................................................................31
Readjustment ..........................................................................................................33
How to determine the best distillation conditions ................................................34
Interface parameters ...............................................................................................35
Read commands .....................................................................................................36
Write commands...................................................................................................... 37
Accessories .............................................................................................................38
Troubleshooting ......................................................................................................39
Replacing diaphragms and valves ........................................................................41
Calibration in the factory.........................................................................................47
Notes on return to the factory ................................................................................48
Health and safety clearance form ..........................................................................49

page 4 of 51
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.: 999073 / 15/12/2009
Safety information!
Remove all packing material, remove the product from its packing-box, remove the
protective covers from the inlet and outlet ports and keep, inspect the equipment.
If the equipment is damaged, notify the supplier and the carrier in writing within three
days; state the item number of the product together with the order number and the
supplier’s invoice number. Retain all packing material for inspection.
Do not use the equipment if it is damaged.
If the equipment is not used immediately, replace the protective covers. Store the
equipment in suitable conditions.
☞Read and comply with this manual before installing or operating the equipment.
☞Transport the pump at the provided handles.
Use the equipment for the intended use only, i.e. for generation and measurement
of vacuum in vessels designed for that purpose.
☞Prevent any part of the human body from coming in contact with the vacuum.
☞Comply with notes on correct vacuum and electrical connections, see section ”Use
and operation”.
☞Make sure that the individual components are only connected, combined and op-
erated according to their design and as indicated in the instructions for use.
Comply with national safety regulations and safety requirements concerning the
use of vacuum and electrical equipment.
☞The mains switch for the controller and the pump is at the rear side of the control-
ler.
☞After switching off the pump, wait at least 60 sec.before next switching it on again.
☞Due to the high leakage current (up to 3,5 mA), a too low rated fault-current circuit
breaker may be activated, especially if several pumps are operated parallelly.
Attention: Make sure that a ground wire connection is established before the
equipment is connected to mains supply!
➨The pumping units MD 8C VARIO, MV 10C VARIO, PC 2008 VARIO, PC 2010 and
PC 2012 VARIO are devices with double-pole cutoff and a symmetric capacitive
circuit.
☞If the leakage current is obtained by measuring the equivalent leakage current
(according to VDE 0701, September 2000, section 5.7), the measured value may
be divided by a factor of 2 in case the device is equipped with a double-pole cutoff
and a symmetric capacitive circuit.
☞The shock currents according to EN 61010 are below the limit of 3,5 mA.
☞Equipment must be connected only to a suitable fused and protected electrical
supply and a suitable earth point. Failure to connect the motor to ground may
result in deadly electrical shock.
☞The supply cable may be fitted with a moulded European IEC plug or a plug suit-
able for your local electrical supply. If the plug has been removed or has to be
removed, the cable will contain wires colour coded as follows: green or green and
yellow: earth; blue or white: neutral; brown or black: live.
☞Check that mains voltage and current conform with the equipment (see rating plate).
☞If the equipment is brought from cold environment into a room for operation, allow
the equipment to warm up (pay attention to water condensation on cold surfaces).
☞Pay attention to the max. permitted ambient temperature and make sure ventila-
tion is adequate.
☞Check fan (underside the pump) regularly for dust/dirt. Clean if necessary.
Comply with all relevant safety requirements (regulations and guidelines) and adopt
suitable safety measures.

page 5 of 51
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the validity of this document with respect to his product. manual-no.: 999073 / 15/12/2009
☞Provide a firm level platform for the equipment and check that the system to be
evacuated is mechanically stable and that all fittings are secure.
Attention: Flexible elements tend to shrink when evacuated.
Due to the high compression ratio of the pumps, pressure at the outlet port might be
generated being higher than the max. permitted pressure compatible with the me-
chanical stability of the system.
☞Comply with maximum permitted pressures and pressure differences, see sec-
tion ”Technical data”. Do not operate the pump with overpressure at the inlet.
Do not permit any uncontrolled pressurizing (e. g. make sure that the exhaust pipe-
line cannot become blocked). If you have an exhaust in-line valve, make sure that you
cannot operate the equipment with the valve closed. Risk of bursting!
☞Ensure that the system design does not allow the exhaust pipeline to become
blocked.
☞Max. permitted pressure at the pressure transducer: 1.5 bar (absolute).
☞Secure coolant hoses at the hose nozzles (e.g. with hose clip) to prevent their
accidental slipping.
☞Check liquid level in the separator (inlet) and the collecting flask (outlet) regularly
and drain condensate in time.
☞Ensure that the system design does not allow the coolant outlet pipeline to become blocked.
☞Check the overpressure safety relief device at the exhaust waste vapour condenser
in appropriate intervals.
☞Avoid overpressure of more than 0.2 bar in case inert gas is connected.
☞The diameter of the inlet and outlet pipeline should be at the least as large as the
diameter of the pump connection pipelines.
To the best of our knowledge the equipment is in compliance with the requirements of
the applicable EC-directives and harmonized standards (see ”Declaration of con-
formity”) with regard to design, type and model, especially directive IEC 1010. This
directive gives in detail conditions, under which the equipment can be operated safely
(see also IP degree of protection).
☞Adopt suitable measures in case of differences, e. g. using the equipment out-
doors, installation in altitudes of more than 1000 m above mean sea level, conduc-
tive pollution or dewiness.
Pay attention to symbol ”hot surfaces” on the equipment (according to IEC 1010 rec-
ommendation).
☞Adopt suitable measures to prevent any danger arising from the formation of hot
surfaces or electric sparks.
The pumps are not suitable to pump dangerous or explosive gases or explosive
or flammable mixtures. Ensure that the materials of the wetted parts are compatible
with the pumped substances, see section ”Technical data”.
☞Adopt suitable measures to prevent the release of dangerous, explosive, corrosive
or polluting fluids.
☞Use inert gas for gas ballast or venting if necessary.
☞The user must take suitable precautions to prevent any formation of explosive
mixtures in the expansion chamber. In case of a diaphragm crack, mechanically
generated sparks, hot surfaces or static electricity may ignite these mixtures.
☞Take adequate precautions to protect people from the effects of dangerous sub-
stances (chemicals, thermal decomposition products of fluoroelastomers), wear
appropriate safety-clothing and safety glasses.
☞Comply with applicable regulations when disposing of chemicals.Take into consid-
eration that chemicals may be polluted.

page 6 of 51
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the validity of this document with respect to his product. manual-no.: 999073 / 15/12/2009
Due to the residual leak rate of the equipment, there may be an exchange of gas,
albeit extremely slight, between the environment and the vacuum system.
☞Adopt suitable measures to prevent contamination of the pumped substances or
the environment.
Pumping at high inlet pressure may lead to overpressure at the gas ballast valve.
☞Pumped gases or condensate might be pushed out in case the valve is open.
☞If an inert gas supply is connected, ensure that the inlet pipeline cannot become
contaminated.
The controller is equipped with a short circuit proof transformer with an integrated
overload protection (no fuses).
The pump is equipped with a frequency converter which checks the electronic sys-
tem of the converter and of the motor of the pump extensively.The motor is protected
by an additional thermal cutout (see section “Troubleshooting”).
Electronic equipment is never 100% fail-safe.This may lead to an indefinite status of the
equipment. Ensure that in case of failure the pump and the vacuum system always will
turn into a safe status. Provide protective measures against malfunction and failure.
☞Operating the pump with high or low frequency, stand still of the pump or operating
an external venting valve must not lead to a critical dangerous situation under any
circumstances.
Ensure that in case of failure the pump and the vacuum system always will turn into a
safe status.
☞In case of diaphragm cracks or leaks in the manifold pumped substances might be
released into the environment or into the pump housing.To reduce the risk of leaks,
ask for a diaphragm pump with additional safety diaphragm.
☞Comply especially with notes on operation and use and maintenance.
☞Failure of the pump (e. g. due to power failure) or of connected components, parts
of the supply (e. g. coolant) or change of parameters (e. g. increase of pressure in
the coolant system) must not lead to a critical dangerous situation under any cir-
cumstances.
Use only genuine spare parts and accessories.
☞Otherwise safety and performance of the equipment as well as the electromagnetic
compatibility of the equipment might be reduced.
Possibly the CE mark becomes void if not using genuine spare parts.
The A-weighed emission sound pressure level of the pump does not exceed 70 dB(A).
Measurement according to EN ISO 2151:2004 and EN ISO 3744:1995 with standard
silencer or exhaust tube at outlet.
Ensure that maintenance is done only by suitable trained and supervised techni-
cians. Ensure that the maintenance technician is familiar with the safety procedures
which relate to the product processed by the vacuum system and that the equipment,
if necessary, is appropriately decontaminated before starting maintenance.
Comply with local and national safety regulations.
Wear parts have to be replaced regularly. In case of normal wear the lifetime of the
diaphragms and valves is > 10000 operating hours. Bearings have a typical durability
of 40000 h.
In case of overload the motor is shut down by a thermal cutout in the winding.
☞Manual reset is necessary. Switch off the pump or isolate the equipment from mains.
Wait approx. five minutes before restarting the pump.
☞Avoid high heat supply (e. g. due to hot process gases).
☞Ensure sufficient air admittance if pump is installed in a housing.

page 7 of 51
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the validity of this document with respect to his product. manual-no.: 999073 / 15/12/2009
➨Isolate equipment from mains and wait two minutes before starting mainte-
nance to allow the capacitors to discharge.
☞Ensure that the pump cannot be operated accidentally. Never operate the pump
if covers or other parts of the pump are disassembled. Never operate a defec-
tive or damaged pump.
☞Attention: The pump might be contaminated with process chemicals which have
been pumped during operation. Ensure that the pump is decontaminated before
maintenance and take adequate precautions to protect people from the effects of
dangerous substances if contamination has occurred.
☞Before starting maintenance vent the pump, isolate the pump and other compo-
nents from the vacuum system. Allow sufficient cooling of the pump. Drain conden-
sate, if applicable. Separate the pump from the coolant circuit.
Repair of the gauge head VSK 5 is not possible.
In order to comply with law (occupational, health and safety regulations, safety at work
law and regulations for environmental protection) vacuum pumps, components and
measuring instruments returned to the manufacturer can be repaired only when certain
procedures (see section ”Notes on return to the factory”) are followed.

page 8 of 51
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the validity of this document with respect to his product. manual-no.: 999073 / 15/12/2009
Technical data
* Technical data according to EN 61010-1 and EN 1012-2.
The pump achieves its ultimate pumping speed and ultimate vacuum only at operating temperature and at 60 Hz (after approx. 15 min.)
** VACUUBRAND pumps of type MD 8C VARIO / MV 10C VARIO / PC 2008 VARIO / PC 2010 VARIO / PC 2012 VARIO are pumps for professional use at vacuum technical
systems connected to low-voltage power supply systems of trade, research or industry. To connect the pumps to a public low-voltage power supply system, ask the
competent power authorities for a connection permission or use an appropriate mains filter.
We reserve the right for technical modifications without prior notice!
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Gas inlet temperatures:

page 9 of 51
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.: 999073 / 15/12/2009
* The actual vacuum control range in your special application might be reduced due to ultimate vacuum of the pump, quantity of gas occurring etc.
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page 10 of 51
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.: 999073 / 15/12/2009
MD 8C VARIO
inlet
gas ballast valve
rating plate
pressure transducer VSK 5
controller CVC 2000
II
pump MD 8C VARIO
with frequency converter
outlet
handle
inlet
gas ballast valve
rating plate
pressure transducer VSK 5
controller CVC 2000
II
pump MV 10C VARIO
with frequency converter
outlet
handle
MV 10C VARIO

page 11 of 51
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the validity of this document with respect to his product. manual-no.: 999073 / 15/12/2009
PC 2008 VARIO
exhaust waste vapour condenser
with protective cover
collecting flask for
condensate
outlet (gas!)
(hose nozzle 10 mm)
controller CVC 2000
II
pump
MD 8C VARIO
with frequency
converter
inlet
(vacuum connection)
pressure transducer VSK 5
handle
separator at the inlet
PC 2010/2012 VARIO
(Fig.: PC 2010 VARIO)
exhaust waste vapour con-
denser with protective cover
collecting flask for
condensate
controller CVC 2000
II
pump
MV 10C VARIO
with frequency
converter
inlet
(vacuum connection)
pressure transducer VSK 5
handle
separator at the inlet
overpressure safety
relief device at the
exhaust waste
vapour condenser
cooling water outlet
(hose nozzle 6 mm)
cooling water inlet
(hose nozzle 6 mm)
rating plate
overpressure safety
relief device at the
exhaust waste
vapour condenser
cooling water inlet
(hose nozzle 6 mm)
cooling water outlet
(hose nozzle 6 mm)
rating plate
outlet (gas!)
(hose nozzle 10 mm)

page 12 of 51
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.: 999073 / 15/12/2009
The controller can be adapted to the specific application by choosing another basic
setup than ”Vacuum control” (factory-set), see section ”General view basic set-
ups”.
The status of the controller respectively of the connected accessories is displayed by
corresponding symbols on the LCD. After switching on the version of the software is
displayed. Then the basic setup is displayed as well as the symbols ”coolant valve”
and ”venting valve”, if the valves are preselected.
Description
General view display
automatic mode
Pressure reading
selectable
pressure units
process control
active
warning (in combination with
other symbols)
setups coolant valvepump symboltime
counter
venting valve
remote operation
setup vacuum control or
continuous pumping
setup VACUU•LAN

page 13 of 51
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.: 999073 / 15/12/2009
Keys
• pressure setting (only vacuum control)
• adapting process pressure
• ”key p▲” or ”key p▼”
• setting frequency
• setting time for switch-off (only VACUU•LAN)
• switching (toggling) in setups
• ”key ▲” or ”key ▼”
• start or stop of process control or
• confirmation of selected values or mode
• operating venting valve (only if
valve is connected and prese-
lected)
Rear side CVC 2000
II
• switch on/off automatic mode (only vacuum control)
• special function (in combination with another key)
connection power
supply frequency
converter
mains switch
connection mains
cable
female connector to connect
trip line frequency converter
female connector to connect a coolant
valve and/or a venting valve
serial interface
RS 232 C
female connector to connect
the gauge head VSK 5
thread M8 for stand rod
(included)

page 14 of 51
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.: 999073 / 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 trans-
ducer.
☞Clean pressure transducer if necessary, see section ”Cleaning and assembling
components”.
Max. permitted pressure at the pressure transducer: 1.5 bar (ab-
solute).
☞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.
gauge head
VSK 5
Notes on operation
Assembling the enclosed components (PC 2008/2010/2012 VARIO):
inlet
➨Assemble separator with centring ring and clamping ring to
the inlet of the pump.
fixing screw
➨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
➨Assemble controller CVC 2000
II
with fixing screw at the con-
troller support.
The separator at the inlet prevents droplets and particles from
entering the pump.
☞Lifetimes of diaphragms and valves are enhanced.
☞Improves vacuum in case of condensation.

page 15 of 51
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.: 999073 / 15/12/2009
cooling water inlet
(hose nozzle Ø 6 mm)
cooling water outlet
(hose nozzle Ø 6 mm)
outlet port (gas!)
(hose nozzle Ø 10 mm)
Prior to use:
☞Max. ambient temperature: 40 °C
☞Make sure ventilation is adequate if pump is installed in a housing or if ambient tem-
perature is elevated. Keep a distance of min. 20 cm between fans and ambient parts.
☞Check fan cover (underside pump motor) regularly for dust/dirt. Clean if necessary.
☞If pump is installed in altitudes of more than 1000 m above mean sea level check
compatibility with applicable safety requirements, e. g. IEC 60034 (motor may over-
heat due to insufficient cooling).
☞If the gas ballast valve is open, a power failure may cause accidental ventilation of
the pump. In case this constitutes a potential source of danger, take appropriate
safety measures.
☞When assembling, ensure vacuum-tightness. After assembly, check the complete
system for leaks.
☞If toxic media or media harmful to health are pumped, connect an exhaust pipeline
at the outlet and/or dispose of the exhaust gases accordingly (hood).
Installing in a vacuum system:
☞Avoid throttling losses by using connecting pipes with large diameter and keep
them as short as possible.
☞Reduce the transmission of vibrations and prevent mechanical loading due to rigid
pipelines.Insert elastic hoses or flexible elements as couplings between the pump
and rigid pipes.
Attention: Flexible elements tend to shrink when evacuated!
☞Use a suitable valve to isolate the pump from the vacuum system to allow the
pump to warm up before condensable vapours are pumped or to clean the pump
before it is switched off.
Exhaust waste vapour condenser:
➨Assemble hose nozzles for coolant inlet and coolant outlet
pipelines at the exhaust waste vapour condenser.
The exhaust waste vapour condenser enables an efficient
condensation of the pumped vapours at the outlet.
☞No backflow of condensates.
☞Controlled recovery of condensates.
☞Next to 100% solvent recovery.
☞The isolation cover protects against glass splinters in case
of breaking, acts as thermal isolation to avoid condensation
of humidity and is intended to absorb shocks.
➨Attach the pipelines of the coolant circuit to the respective hose nozzles (see im-
age) at the waste vapour condenser. Check hose connections prior to starting op-
eration of the cooling system.
➨Attention: Install hoses of the cooling system in a way to avoid flow / dropping of
condensed water to the pumping unit (especially cables and electronic parts).
☞Secure coolant hoses at the hose nozzles (e.g. with hose clip) to prevent their
accidental slipping.
☞Install an optional coolant valve always only in the inlet line of the exhaust waste
vapour condenser.
☞Ensure that the coolant outlet pipeline is always free and that it cannot get blocked.
☞The gas outlet (hose nozzle 10 mm) must not be blocked.The exhaust pipeline has
always to be free and pressureless to enable an unhindered discharge of gases.
☞Connect the exhaust to a suitable treatment plant to prevent the discharge of dan-
gerous gases and vapours to the surrounding atmosphere.

page 16 of 51
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.: 999073 / 15/12/2009
During operation:
Do not start pump if pressure difference between inlet and outlet port exceeds max.
1 bar. Attempts to start pump at higher difference may cause blockade and damage of
the motor.
☞Check compatibility with max. permitted pressure at outlet and max. pressure
difference between inlet and outlet ports.
Due to the high compression ratio of the pumps, pressure at the outlet port might be
generated being higher than the max. permitted pressure compatible with the mechanical
stability of the system.
The pump achieves its pumping speed, ultimate total vacuum and vapour pumping
rate only at operating temperature (after approx. 15 minutes).
☞Prevent internal condensation, transfer of liquids or dust.The diaphragm and valves
will be damaged, if liquids are pumped in significant amounts.
☞Let the pump run with gas ballast to reduce condensation of pumped substances
(water vapour, solvents, ....) in the pump.
In case of overload the motor is shut down by a thermal cutout in the winding.
☞Manual reset is necessary. Switch off the pump or isolate the equipment from
mains. Wait approx. five minutes before restarting the pump. Identify cause of fail-
ure and eliminate.
☞Use and operation of the controller see section ”Working with the controller”.
☞Setting of interface parameters, see section ”Interface parameters”.
☞Preselections at the controller, see section ”Basic setups”.
Attention: Important notes regarding the use of gas ballast
☞Make sure that air/gas inlet through the gas ballast valve never lead to hazardous,
explosive or otherwise dangerous mixtures. If in doubt, use inert gas.
☞When using air rather than inert gas, risk of significant damage to equipment and/or
facilities, risk of personal injury or even loss of life exists due to the formation of
hazardous and/or explosive mixtures if air and pumped media react inside or at the
outlet of the pump.
For condensable vapours (water vapour, solvents, ...):
☞Do not pump vapour before pump has reached its operating
temperature. Pump vapour with cas ballast open.
☞Open gas ballast valve. (Closing of gas ballast valve by turn-
ing 180°.)
☞With gas ballast valve open ultimate vacuum will be reduced,
pumping speed is decreased.
☞Use inert gas at the air inlet to avoid the formation of explo-
sive mixtures.
In case of low boiling solvents when the formation of condensate is unlikely, the use of
gas ballast might be unnecessary.
☞Operating the pump without gas ballast increases the solvent recovery rates at the
exhaust waste vapour condenser.

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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.: 999073 / 15/12/2009
☞Separator at the inlet: Isolate or shut down the pump, admit
air or inert gas to atmospheric pressure, remove drain screw
and drain condensate.
☞Collecting flask at the outlet: Remove joint clip, remove flask
and drain condensate.
Attention: Notes concerning the operation of the exhaust waste vapour condenser
➨Check hose connections prior to starting operation of the cooling system.
➨Check coolant hoses regularly during operation.
☞Ensure that the coolant outlet pipeline is always free and that it cannot get blocked.
☞Maximum permissible coolant pressure at the exhaust waste vapour condenser:
6 bar (absolute)
☞Comply with the maximum permissible coolant pressures of additional components
in the coolant circuit (e.g coolant valve).
☞Avoid overpressure in the coolant circuit (e.g. caused by blocked or squeezed cool-
ant hoses).
☞Permissible range of coolant temperature at the exhaust waste vapour condenser:
-15°C to +20°C
☞The gas outlet (hose nozzle 10 mm) must not be blocked.The exhaust pipeline has
always to be free and pressureless to enable an unhindered discharge of gases.
➨Check the overpressure safety relief device at the exhaust
waste vapour condenser regularly, replace if necessary.
Check especially for sticking and cracks.
☞Connect the exhaust to a suitable treatment plant to prevent
the discharge of dangerous gases and vapours to the sur-
rounding atmosphere.
In case of condensation:
➨Check liquid level in both catchpots during operation. Avoid overflowing of the catch-
pots.
➨Check liquid level in both catchpots regularely and drain catchpots in time.
Important: Comply with applicable regulations when disposing solvents which may
be contaminated by pumped substances. Reuse if possible, purify if contaminated.
Draining the condensate:
drain screw

page 18 of 51
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.: 999073 / 15/12/2009
Shutdown:
Short-term:
Has the pump been exposed to condensate?
☞Allow the pump to continue to run at atmospheric pressure for a few minutes.
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.
➨Drain catchpots.
➨Close inlet and outlet port (e. g. with transport caps).
➨Store the pump in dry conditions.

page 19 of 51
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.: 999073 / 15/12/2009
setting pressure unit (mbar / Torr / hPa)
configuration of the coolant valve if applicable
setting basic setup
ready to
start
basic setup ”vacuum control” (factory set)
controller controls
- pump according to preset pressure value or in automatic mode
- coolant valve (optional)
- venting valve (optional)
basic setup ”VACUU•LAN”
controller controls
- pump according to preset pressure and time values
- coolant valve (optional)
- venting valve (optional)
General view basic setups
basic setup ”continuous pumping”
controller controls
- pump according to preset pumping speed
- coolant valve (optional)
- venting valve (optional)
configuration of the venting valve if applicable
CVC 2000
II

page 20 of 51
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.: 999073 / 15/12/2009
appropriate mode, vacuum control with or without automatic, continuous pump-
ing with preset pumping speed or VACUU•LAN: The components of the chemistry
vacuum system (coolant valve, venting valve) have to be preset once only. The mode
as from last operation and the preselected values (e. g. for pressure, speed or time for
switching off) are stored. In case of similar operation conditions it is possible to start
immediately, if the preselections are chosen appropriately.
Working with the controller
How to configurate the controller
Vacuum control:
☞Position control on preset pressure value.
☞The pumping speed is adapted to the occurring gas/vapour,
so that the preset pressure value is kept constant.
☞Operating in the equilibrium of the process by continuous
adaptation of the controller, no abrupt operation of valves.
☞Vacuum supply according to the requirements for lock cham-
bers or pumping systems not compressing against atmos-
pheric pressure, e. g. wide range turbomolecular pumps or
cryo pumps.
Continuous pumping with preset pumping speed:
☞Simple suction, sucking liquids by siphon, drying, sucking
off excesses, etc.
☞Suction with adjustable pumping speed.
☞Pumping down until the ultimate vacuum of the pump is
achieved (e. g. to dry a system).
☞System controlled by an interface: temporally or pressure
dependant variable pumping speed to optimise the process
conditions (e. g. to dry sensitive substances).
☞Pumping with pressure selection ”HI”: Optimum pumping
speed at any pressure.
Vacuum control in automatic mode:
☞Searching the boiling point and adjusting the set point auto-
matically if the boiling point changes (due to temperature
change, change of ingredients of solutions).
☞Adjusting the set point automatically after manual setting of
the boiling point (additional automatic mode in basic setup
vacuum control).
☞Automatic switching off after complete evaporation of the
solvent, if preselected.
In all basic setups:
☞If cooling water and/or venting valve have been connected
and preselected:
☞Process-adapted operation of the coolant valve.
☞Key-driven venting or adjustment of the set point by venting
if process control is active.
- the components of the VACUUBRAND chemistry vacuum system which are con-
nected to the system.
- the specific user and/or process requirements.
The vacuum controller CVC 2000
II
offers three basic setups depending on
The controller CVC 2000
II
can be adapted to the specific application by choosing the