Heidolph ROTAVAC User manual

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ROTAVAC vario Pumping unit
Instruction manual

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[GB] It is imperative to read this instruction man-
ual prior to initial operation! Comply with safety
instructions!
Keep for further use!
This documentation is not subject to revision
service!

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➨Danger! Immediate danger. Death or severe injuries as well as damage
to equipment and environment can occur.
☞Warning! Possible danger. Severe injuries as well as damage to equip-
ment and environment can occur.
• Caution!Possibledanger.Slightinjuriesaswellasdamagetoequip-
ment and environment can occur.
Note. Disregarding of notes may cause damage to the product.
Caution! Hot surface!
Isolate equipment from mains before removing the cover.
NOTICE

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V2.12
Deutsch
English
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Español
Türkçe
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Ρyccкий
Polski
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Reset / Language selection
1 switch off 2 press both
3 turn
4 press
V2.12
Deutsch
English
Français
Italiano
Español
Türkçe
Portuguê
Ρyccкий
Polski
Nederl.
Suomi
日本語
中文
한국어

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Contents
Reset / Language selection .....................................................................................5
Safety information!.....................................................................................................7
1.1 General information......................................................................................................................7
1.2 Intended use.................................................................................................................................7
1.3 Setting up and installing the equipment .......................................................................................7
1.4 Ambient conditions .......................................................................................................................8
1.5 Operating conditions ....................................................................................................................8
1.6 Safety during operation ................................................................................................................9
1.7 Maintenance and repair.............................................................................................................. 11
2 Standard items and options .................................................................................12
3 Technical data........................................................................................................13
3.1 Gas inlet temperatures ..............................................................................................................14
3.2 Wetted parts ..............................................................................................................................15
3.3 Pump parts ................................................................................................................................15
4 Use and operation .................................................................................................18
4.1UsingaROTACOOLreuxcooler.............................................................................................18
4.2 Installing in a vacuum system ....................................................................................................18
4.3 Condensate cooler (accessory)..................................................................................................19
4.4 During operation.........................................................................................................................20
4.5 Attention: Important notes regarding the use of gas ballast .......................................................21
4.6 Shutdown ...................................................................................................................................22
5 Controller ...............................................................................................................23
5.1 Menu guide..........................................................................................................26
5.2 Function Pump down.........................................................................................27
5.3 Function Vac control ..........................................................................................29
5.4 Function Auto mode...........................................................................................31
5.5 Function Program...............................................................................................32
Exampleforuse ..............................................................................................................................33
5.6 Function VACUULAN .........................................................................................34
5.7 Examples for use................................................................................................35
5.7.1Vacuumforltrationandsuction ............................................................................................35
5.7.2 Vacuum for gel dryer, drying chambers and vacuum concentrators ......................................35
5.7.3 Vacuum for distillation and evaporation (e. g. rotary evaporator)...........................................36
5.7.4VacuumforVACUU•LANnetworks ........................................................................................36
5.8 Function Conguration......................................................................................37
6 Readjustment of the controller ............................................................................38
7 Interface parameters .............................................................................................39
7.1 Setting of the interface ..............................................................................................................39
7.2 Read commands ......................................................................................................................40
7.3 Write commands .......................................................................................................................43
8 Assembling the condensate cooler (accessory) ................................................45
9 Troubleshooting ....................................................................................................46
10 Cleaning the pressure transducer .....................................................................49
11 Replacing diaphragms and valves.....................................................................50
11.1 Cleaning and inspecting the pump heads ...............................................................................51
11.2 Replacing the diaphragm.........................................................................................................53
11.3 Replacing the valves and assembly of the pump heads .........................................................54
11.4 Replacing the overpressure safety relief device at the condenser ..........................................57
12 Warranty, liability, copyright...............................................................................58
13 FAQ / repair work.................................................................................................59
14 Conrmation of condition of unit.......................................................................60

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Safety information!
1.1 General information
Read and comply with this manual before installing or operating the equipment.
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.
1.2 Intended use
☞The pump and all system parts must not be used on humans or animals.
☞Prevent any part of the human body from coming in contact with vacuum.
☞Ensure that the individual components are only connected, combined and oper-
ated according to their design and as indicated in the instructions for use.
☞Comply with notes on correct vacuum and electrical connections, see section
”Use and operation”.
• Thepumpsaredesignedforambient temperatures during operation between
+10°Cand+40°C.Checkthemaximumtemperaturesifinstallingthepumpina
cabinetorahousingandmakesureventilationisadequate.Installanexternal
automaticventilationsystemifnecessary.Ifpumpinghotprocessgasesmake
surethatthemaximumpermittedgasinlettemperature,whichdependsonsev-
eralparameterslikeinletpressureorambienttemperature(see”Technicaldata”),
isnotexceeded.
• Particles and dust must not be aspirated.
Use the equipment for the intended use only, i.e. for generation, control and meas-
urement of vacuum in vessels designed for that purpose.
1.3 Setting up and installing the equipment
➨Equipment must be connected only to a suitably fused and protected electri-
cal supply and a suitable earth point. Failure to connect the motor to ground may
resultindeadlyelectricalshock.
 Themainscablemaybetted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.
☞Due to the high compression ratio of the pump, the pressure at the outlet port
might get higher than the maximum permissible pressure compatible with the
mechanical stability of the system.
☞Do not permit any uncontrolled pressurizing(e.g.makesurethattheexhaust
pipelinecannotbecomeblocked).Ifthereisanexhaustisolationvalve,makesure
that you cannot operate the equipment with the valve closed. Risk of bursting!
NOTICE
NOTICE

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☞ Alwaysprovideafreeandpressurelessexhaustpipeline.
☞ Max.permitted pressure at the pressure transducer: 1.5 bar (absolute).
☞Avoid overpressure of more than 0.2 bar in case inert gas is connected to the
pump, the gas ballast connection or to a venting valve.
• Complywithmaximum permissible pressures at inlet and outlet and pressure
differences, see section ”Technical data”. Do not operate the pump with overpres-
sure at the inlet.
• Check that mains voltage and current conform with the equipment (see rating
plate).
• Connectpipesgastightatinletandoutletofthepump.
• Attention:Flexibleelementstendtoshrinkwhenevacuated.
Provide a rm level platform for the equipment and check that the system to be
evacuatedismechanicallystableandthatallttingsandhoseconnectionsarese-
cure.Ensureastablepositionofthepumpwithoutanymechanicalcontactexceptof
the pump feet. Comply with all applicable safety regulations.
Keep a distance of minimum 20 cm between fan and ambient parts (e.g. housing,
walls,...).Checkfanregularlyfordust/dirt,cleanifnecessarytoavoidacutbackof
ventilation.
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).
The diameter of the inlet and outlet pipeline should be at least as large as the diam-
eter of the pump connection pipelines.
Comply with all applicable and relevant safety requirements (regulations and
guidelines), implement the required actions and adopt suitable safety meas-
ures.
1.4 Ambient conditions
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. Directive EN 61010-1 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 outdoors,
installation in altitudes of more than 1000 m above mean sea level, conductive pol-
lution or bedewing.
Pay attention to the permissible maximum ambient and gas inlet temperatures
(see ”Technical data”).
1.5 Operating conditions
➨The pumps have no approval for operation in or for pumping of potentially
explosive atmospheres.
➨The pumps are not suitable to pump
-unstable substancesandsubstances whichreactexplosivelyunder
impact (mechanical stress) and/or when being exposed to elevated
temperatures without air,
- self inammable substances,
- substances which are inammable without air and
-explosive substances.
NOTICE
NOTICE

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• The pumps are not suitable for pumping substances which may form deposits
inside the pump. Deposits and condensate in the pump may lead to increased
temperatureseven tothepoint ofexcessing themaximumpermitted tempera-
tures!
• Ifthereisadangerofformationofdepositsinthepumpchamber(checkinlet
and outlet of the pump), inspect the pump chambers regularly and clean if neces-
sary.
• Thepumpsarenot suitable for pumping dust and have no approval for opera-
tion below ground.
If pumping different substances, it is recommended to purge the pump with air or
inert gas prior to changing the pumped media in order to pump out residues and to
avoid reactions of the pumped substances with each other and with the pump ma-
terials.
Take into consideration interactions and chemical reactions of the pumped me-
dia. Ensure that the materials of the wetted parts are compatible with the pumped
substances, see section ”Technical data”.
1.6 Safety during operation
➨ Adoptsuitablemeasurestopreventthereleaseofdangerous,toxic,explosive,
corrosive,noxiousorpollutinguids,vapoursandgases.Incaseinstallanap-
propriatecollectinganddisposalsystemandtakeprotectiveactionforpumpand
environment.
➨Prevent any part of the human body from coming into contact with vacuum.
➨ Theusermusttakesuitableprecautionstopreventany formationof explosive
mixturesintheexpansionchamberorattheoutlet.Incaseofe.g.adiaphragm
crack,mechanicallygeneratedsparks,hotsurfacesorstaticelectricitymayignite
thesemixtures.Useinertgasforgasballastorventingifnecessary.
➨ Potentiallyexplosivemixturesattheoutletofthepumphavetobedrainedap-
propriately,suckedoffordilutedwithinertgastonon-explosivemixtures.
☞Pay attention to the symbol ”hot surfaces” on the equipment. Adopt suitable
measures to prevent any danger arising from the formation of hot surfaces or
electricsparks.Provideasuitableprotectionagainstcontactifnecessary.
☞ Ensurethattheexhaustpipelineisalwaysfreeandpressureless.
☞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 is not con-
taminated.
☞Attention: Ifthepressureishigherthanapproximately1080mbarthepressure
reading becomes incorrect (saturation of the pressure transducer). The display
ashes.Immediate pressure relief necessary! Risk of bursting!
NOTICE

page 10 of 61
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• Complywithapplicableregulationswhendisposingofchemicals.Takeintocon-
sideration that chemicals may be polluted.
 Takeadequateprecautionstoprotectpeoplefromtheeffectsofdangeroussub-
stances(chemicals,thermaldecompositionproductsofuoroelastomers),wear
appropriate safety-clothing and safety glasses.
• Useonlygenuine spare parts and accessories. Otherwise safety and perform-
ance of the equipment as well as the electromagnetic compatibility of the equip-
ment might be reduced.
PossiblytheCEmarkortheC/USconformitybecomesvoidifnotusinggenuine
spare parts.
• Switchingofanin-linevalveoropeningofaventingvalvebythecontrollermust
not lead to a critical dangerous situation under any circumstances.
• Attention: If Auto-Start is preselected, the process starts immediately after a
power failure without pressing any further key. It is the user’s responsibility to
ensure that no dangerous status of the system due to the automatic start-up can
occur and to provide appropriate safety measures. If necessary, the user has to
checkprior to starting process control whether the option ”Auto-Start” is ena-
bled.
Donot startthepump ifthepressure differencebetweeninletand outletportex-
ceeds1.1baratmaximum.
Preventanybackpressureofgasesandthebackowofcondensates.
Neversuckliquidsordustintothepump.
Provide appropriate protective measures (i.e precautions which allow for the require-
ments of the respective application) even for the case of failure and malfunction.
Failure of the pump (e.g. due to power failure) or of connected components, of parts
of the supply or change of parameters must not lead to a critical dangerous situa-
tionunderanycircumstances.Incaseofdiaphragmcracksorleaksinthemanifold
pumped substances might be released into the environment or into the pump hous-
ing or motor. Comply especially with notes on operation and use and maintenance.
Due to the residual leak rate of the equipment,theremight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.
The controller is powered by a short circuit proof wide-range power supply with
integrated overload protection.
The motor is protected by a temperature sensor at the circuit board: Current
limitation if the temperature at the circuit board is higher than 70°C, switching off the
pumpifthetemperatureishigherthan85°C.Incaseofblockadeofthemotor(after
10 attempts to start-up) the pump is switched off.
If the pump is switched off due to safety measures, manual reset is necessary. Isolate
the pump from mains. Eliminate the cause of failure before restarting the pump.
NOTICE

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1.7 Maintenance and repair
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.
➨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 defective
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sufcientcoolingofthepump.
NOTICE
Ensure that maintenance is done only by suitably trained and supervised techni-
cians. Ensure that the maintenance technician is familiar with the safety procedures
which relate to the products processed by the pumping system.
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 12 of 61
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Item qty P/N 200-240 V
50/60 Hz
P/N
100-120 V
50/60 Hz
ROTAVAC vario Pumping unit 1 591-00142-00 591-00142-01
Standard items ROTAVAC vario control / ROTAVAC vario tec
ROTAVAC vario control (pump) 1
Power cord 1 14-007-003-81 14-007-003-89
Instruction manual 1 01-005-005-24
Warrantycard/
Conrmationofconditionofunit 1 01-006-002-58
2 Standard items and options
Item P/N
ROTAVAC vario Pumping unit condensate cooler 591-00084-00
Accessories (optional)

page 13 of 61
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the validity of this document with respect to his product. Manual-no.: 999248 / 28/04/2011
We reserve the right for technical modications without prior note!
3 Technical data
Type ROTAVAC vario Pumping unit
Maximumpumpingspeed(ISO21360) m3/h 1.7
Ultimate vacuum (absolute) without gas
ballast* mbar 5
Ultimate vacuum (absolute) with gas bal-
last* mbar 7
Maximumpermissibleinletpressure
(absolute) bar 1.1
Maximumpermissibleoutletpressure
(absolute)
bar 1.1
Maximumpermittedpressuredifference
between inlet and outlet 1.1
Maximumpermissiblepressure(absolute)
at gas ballast valve bar 1.2
Permissible ambient temperature
storage
operation
°C
°C
-10 to +60
+10 to +40
Permissible relative atmospheric moisture
during operation (no condensation) % 30 to 85
Rated power kW 0.16
No-load speed** min-1 0 - 2400
Maximumpermissiblerangeofsupply
voltage (+/-10%)
Attention: Observe specications of rating plate!
100-120V~50/60Hz
200-240V~50/60Hz
Maximumratedcurrentat:
100-120V~50/60Hz
200-230V~50/60Hz
A
A
1.6
0.7
Motor protection temperature sensor on the pcb
(current limitation)
Degree of protection IEC 529 IP 20
Inlet hosenozzleDN8/10mm
Outlet hose nozzle DN 8 mm
A-weighted emission sound pressure
level*** (uncertainty KpA: 3 dB(A)) dB(A) 42
DimensionsLxWxHapprox. mm 294x192x299
Weightapprox. kg 6.0
* Ultimate vacuum with function ”Pumpdown” and at speed ”HI”
** Note: In the motor speed range between 0 and approx. 200 rpm the pump is running automatically
in a cycled interval operation.
*** Measurement according to EN ISO 2151:2004 and EN ISO 3744:1995 at 1500rpm and ultimate
vacuumwithexhausttubeatoutlet.

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* The actual vacuum control range in your special application might be reduced due to ultimate vacu-
um of the pump, quantity of gas occurring etc.
We reserve the right for technical modication without prior notice!
3.1 Gas inlet temperatures
Operating condition Inlet pressure Permitted range of gas
temperatures at inlet
Continuous operation > 100 mbar (high gas load) +10°C to +40°C
Continuous operation < 100 mbar (low gas load) è 0°C to +60°C
Short-time (< 5 minutes) < 100 mbar (low gas load) -10°C to +80°C
Controller
Pressure transducer ceramic diaphragm (alumina), capacitive, abso-
lute pressure, gas type independent
Display LCD graphic display, illuminated
Pressureunits/scale(selectable) mbar, Torr or hPa
Measuring range (absolute) 1080 mbar - 0.1 mbar (810 Torr - 0.1 Torr)
Maximum control range with internal pressure
transducer (absolute)*
1060 mbar – 1 mbar (795 Torr – 1 Torr),
Turbo-Mode(<1mbar/Torr)
Resolution 0.1 mbar
Maximumpermissiblepressureatpressure
transducer (absolute) 1.5 bar (1125 Torr)
Maximumpermissibletemperatureofgaseous
media
continuous operation: 40°C,
for short periods up to 80°C
Measurement uncertainty (absolute) after careful
adjustment and at constant temperature <±1 mbar (0.75 Torr)
Temperaturecoefcient <±0.07mbar/K(0.05Torr/K)
Ambient temperature range (operation) 10°C to +40°C
Ambient temperature range (storage) -10°C to +70°C
Permitted relative atmospheric moisture during
operation (no condensation) 30% to 85%
Maximumpermitted current of connectedvalves
(connected components) 4 A
Venting connection hose nozzle for hose 4-5 mm
Maximumadmissiblepressureatventing
connection 1.2 bar absolute
Degree of protection according to IEC 529
(front side) IP 42
Interface RS 232 C

page 15 of 61
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the validity of this document with respect to his product. Manual-no.: 999248 / 28/04/2011
3.2 Wetted parts
Components Wetted materials
Pump
Housing cover PTFE
Head cover ETFEcarbonbrereinforced
Diaphragm clamping disc ETFEcarbonbrereinforced
Diaphragm PTFE
Valves FFKM/PTFE
Inlet PP, stainless steel, FPM
Distributor (at inlet) PP
O-ring FPM
Outlet ETFE
Tubing PTFE
Screw-inttings ETFE/ECTFE
Controller
Sensor Aluminiumoxideceramic
Sensor housing PPS/glassbre
Sensor seal Chemicallyresistantuoroelastomer
Venting valve seal FPM
We reserve the right for technical modication without prior notice!
Position Component
1 chemistry diaphragm pump
2 controller
3 mains connection
4ON/OFFswitch
5 inlet
6 outlet
7 gas ballast valve
3.3 Pump parts
Position Component
8 control cable
9 condensate cooler
10 catchpot
11 coolant inlet
12 coolant outlet
13 overpressure safety relief device
14 accessory foot

page 16 of 61
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the validity of this document with respect to his product. Manual-no.: 999248 / 28/04/2011
1
5
2
7
4
3
6
Rear side controller
ROTAVAC vario Pumping unit
8
jacksforconnectionof
VACUU•BUScomponents(e.g.,
coolantvalve)externalventing
valve)
connection plug of the
VACUU•BUSlinetoVARIOpump
rating plate vacuum connection
venting connection
serial interface
RS 232 C

page 17 of 61
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the validity of this document with respect to his product. Manual-no.: 999248 / 28/04/2011
9
11
12
4
6
5
3
7
13
10
14
ROTAVAC vario Pumping unit with condensate cooler
(accessory)

page 18 of 61
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the validity of this document with respect to his product. Manual-no.: 999248 / 28/04/2011
4 Use and operation
4.2 Installing in a vacuum system
• Connectionlinesatthepumpinlethavetobegastight.Particlesanddustmust
notbeaspirated,theuserhastoprovideappropriateltersifnecessary.Theuser
mustensuretheirsuitabilityconcerninggasow,chemicalresistanceandsafe-
ness against clogging prior to use.
• Connectanexhaustlinegastightatthepumpoutletifnecessary.Alwaysdispose
ofexhaustgasesappropriately(e.g.intoafumehood).Ifthereisriskofreleaseof
dangerousorpollutinguids,installanappropriatesystemtocatchanddispose
ofthoseuids.
• Reducethetransmissionofvibrationandpreventloadingduetorigidpipelines.
Insertelastichosesorexibleelementsascouplingsbetweenthepumpandrigid
pipes. Attention:Flexibleelementstendtoshrinkwhenevacuated.
• Theexhaustlinehasalwaystobefree(pressureless)toensureanunimpeded
discharge of gas.
• Especiallyifthegasballastvalveisopen,apowerfailuremaycauseuninten-
tional ventilation of the pump and the vacuum system. In case this constitutes a
potentialsourceofdanger,takeappropriatesafetymeasures.
• Makesureventilationisadequateifthepumpingunitisinstalledinahousingor
ifambienttemperatureiselevated.Provideexternalventingifnecessary.Keepa
distance of minimum 20cm between fan and ambient parts.
Whenswitchingonthecontrollerfortheveryrsttime,amenutoselectthelanguageofthecontroller
menu is displayed. Select the desired language (e.g. ”English”)byturningtheselectionknobandpress
toconrm.Thenselectthepressureunit(”mbar”, ”Torr” or ”hPa”) in the same way.
It is possible to access the language selection menu at any time by switching on the controller
while keeping the selection knob pressed.
4.1 Using a ROTACOOL reux cooler
If using the ROTAVAC vario Pumping unit together with
theROTACOOLreuxcooler,placetheROTAVACvario
Pumping unit directly on top of the ROTACOOL.
If using the ROTAVAC vario Pumping unit without the
ROTACOOL reux cooler, an extra foot has to be in-
stalled for operation with the condensate cooler (14; in-
cluded in the scope of delivery of the condensate cool-
er). Position the ROTAVAC vario Pumping unit simply
ontheextrafoot,therebyplacingthepump’sfeetinthe
fourhollowsoftheextrafoot.
Install the coolant hoses in such a way that the stability
of the pump is assured even with a full catchpot

page 19 of 61
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the validity of this document with respect to his product. Manual-no.: 999248 / 28/04/2011
NOTICE Afterswitchingoffthepump,wait60sec.minimumuntilnextswitchingon.
Avoidthrottlinglossesbyusingconnectingpipeswithlargediameterandkeepthem
as short as possible.
Incaseofperturbingexhaustnoiseconnectanexhausthose.
Installoutletpipelinesalwaysfallingtoavoidbackowofcondensatetowardsthepump.
When assembling, ensure vacuum-tightness.Afterassembly,checkthecomplete
systemforleaks.
Secure hose connections at the pump appropriately against accidental detaching.
The controller can only be operated with components which are compatible to the
BUS system, e. g. optional coolant and venting valves.
Pressure transducer of the controller:
Max.permittedpressureatthepressuretransducer:1.5bar
(absolute).
☞ Thedisplayashesatapressurehigherthan1080mbar.
Release pressure immediately. Risk of bursting!
☞Condensate and deposits in the pressure transducer af-
fect the measuring result.
☞Clean pressure transducer if necessary.
vacuum
connection
Catchpot:
The round bottom ask is coated with a protective layer to
preventdisintegrationincaseofbreakageorimplosion.
➨Assemble the catchpot using the joint clip.
overpres-
sure safety
relief de-
vice
catchpot at
the outlet
4.3 Condensate cooler (accessory)
Condensate cooler:
➨Assemble hose nozzles for coolant inlet (1) and coolant
outlet (2) pipelines at the condensate cooler.
The condensate coolerenablesanefcientcondensationof
the pumped vapors at the outlet.
☞ Nobackow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condensa-
tionofhumidityandisintendedtoabsorbshocks.
Attach the pipelines of the coolant circuit to the respective hose nozzles (hose noz-
zles6-8mm,seeimage)atthewastevaporcondenser.Checkhoseconnections
prior to starting operation of the cooling system.
Secure coolant hoses at the hose nozzles (e.g. with hose clip) to prevent their ac-
cidental slipping.
outlet (gas!; hose nozzle 10 mm)
NOTICE
(2)
(1)

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4.4 During operation
•Maximum ambient temperature: 40 °C
• Makesureventilationisadequateifpumpisinstalledinahousingorifambient
temperature is elevated.
• Potentially dangerous gases or vapours at the outlet of the pump have to be
drained and disposed appropriately.
• Duetothehighcompressionratioofthepumps,pressureattheoutletportmight
begeneratedbeinghigherthanthemaximumpermissiblepressurecompatible
with the mechanical stability of the system. Ensure that the pump outlet cannot
becomeblockedorrestricted.
If pumping condensable vapours (water vapour, solvents, ....), let the pump run with
gas ballast to reduce condensation in the pump.
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insufcientcooling).
Do not start the pump if the pressure at outlet portexceeds maximum 1.1 bar
(absolute).Attemptstostartthepumpathigherpressuresmaycauseblockadeand
damage of the motor.
Checkcompatibilitywithmaximally permitted pressure at inlet and outlet.
Prevent internal condensation, transfer of liquids or dust. The diaphragm and valves
willbedamaged,ifliquidsarepumpedinsignicantamounts.
Check the pump regularly for external soiling and deposits, clean if necessary to
avoid an increase of the pump‘s operating temperature.
The motor is protected by a temperature sensor at the circuit board: Current
limitation if the temperature at the circuit board is higher than 70°C, switching off the
pumpifthetemperatureishigherthan85°C.Incaseofblockadeofthemotor(after
10 attempts to start-up) the pump is switched off.
If the pump is switched off due to safety measures, manual reset is necessary. Iso-
late the pump from mains. Eliminate cause of failure before restarting the pump.
Avoid high heat supply (e. g. due to hot process gases).
Awarmupperiod(approx.15min.)isrequiredtoensurethatratedultimatevacuum
and pumping speed are attained.
NOTICE
• 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.
• Ifnecessaryconnecttheexhausttoasuitabletreatmentplanttopreventthedis-
charge of dangerous gases and vapors to the surrounding atmosphere.
• Attention:Installhosesofthecoolingsysteminawaytoavoidow/droppingof
condensed water onto the pumping unit (especially cables and electronic parts).
• Ensure that the coolant outlet pipeline is always free and that it cannot get
blocked.
• Maximumpermissiblecoolantpressureatthecondensatecooler:6bar(abso-
lute)
• Installcoolantvalvesalwaysinthesupplylineofthewastevaporcondenseronly.
• Complywith themaximumpermissiblecoolantpressures ofadditionalcompo-
nents in the coolant circuit (e.g cooling water valve).
• Avoidoverpressureinthecoolant circuit(e.g. causedby blockedor squeezed
coolant hoses).