vacuubrand BioChem-VacuuCenter BVC 21 User manual

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page 1 of 27
BioChem-VacuuCenter
BVC 21
BVC 01
Instructions for use
Technology for Vacuum Systems

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 2 of 27
After sales service:Contact yourlocaldealeror call+49 9342808-193.
Dearcustomer,
YourVACUUBRANDdiaphragmpumpsshould supportyouforalongtime withouttroubleandwithmaximal
power.Thankstoour longpracticalexperiencewe havemuch information how you couldensure powerful
application and personal safety.Please read these instructions for use before the initial operation of your
pump.
VACUUBRANDdiaphragmpumps aretheresult ofmany yearsofexperiencein construction andpractical
operationofthesepumps combinedwiththelatestdevelopmentsinmaterial andmanufacturingtechnology.
Our quality maxim is the ”zero fault principle”:
Every diaphragmpump, leavingour company,istestedintensivelyincludingan endurance runof 18hours.
Therefore also faults, which occur rarely, are identified and can be eliminated immediately.
The achievement of the specifications after the endurance run is tested for every pump.
EveryVACUUBRAND pump achievesthe specifications.We feel obliged to thishighqualitystandard.
We know thatthevacuumpump cannottakea part ofyourreal work andhope thatourproducts contribute
to an effective and trouble-free realisation of your work.
Yours
VACUUBRANDGMBH +CO KG

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page 3 of 27
Attention! Important notes!
Not permitted! Misuse may cause damage.
Caution!Hot surface!
Isolateequipmentfrom mains.
Note.
Contents
Safety information! ....................................................................................................4
Technical data............................................................................................................8
Use and operation...................................................................................................12
Accessories - spare parts.......................................................................................16
Troubleshooting ......................................................................................................17
Replacing diaphragms and valves ........................................................................18
Assembling of components ...................................................................................22
Cleaning and decontaminating ..............................................................................23
Notes on return to the factory ................................................................................24
Health and safety clearance form ..........................................................................25

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 4 of 27
Safety information!
Remove all packing material, remove the product from its packing-box, remove the
protectivecovers fromtheinlet andoutletports andkeepthem.Inspectthe 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
equipmentin suitableconditions.
☞Readandcomplywiththismanualbeforeinstalling or operating the equipment.
☞Transportthepump attheprovidedhandles.
☞☞
☞☞
☞If the equipment is used in combination with hazardous materials (e. g. in
medical-microbiological laboratories) check all relevant safety and health re-
quirements and determine the applicability of regulatory limitations prior to
use if necessary.
☞For aspiration of liquids connect the system BVC 01 to a suitable vacuum supply.
☞☞
☞☞
☞Before operating the equipment read and comply with the sec-
tion ”Cleaning and decontamination”!
Ensurethat theequipmentis suitablefor theintendedapplication. Usethesystem only
for aspiration of liquids.
☞☞
☞☞
☞The system is not designated to be used in contact with the human body.
☞Comply with notes on correct vacuum and electrical connections.
☞Makesure thattheindividualcomponentsare onlyconnected,combinedandoper-
ated 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.
☞Equipment must be connected only to a suitable fused and protected electrical
supplyandasuitableearthpoint.Failureto connectthemotor togroundmayresult
in deadly electrical shock.
☞Thesupply cablemaybe fittedwitha mouldedEuropeanIECplugoraplugsuitable
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):
Pumpswith dual-voltage motor (100-120V / 200-230V;50/60 Hz):
☞The equipment must be connected to a suitable fused and protected electrical
supplyanda suitable earth pointonly, provideslow-blowfuseaccordingto voltage
supply(see ”Technical data”).
☞Check that the voltage changeover switch is positioned correctly.
Attention: If the pump is switched on with the voltage not correctly selected,
the motor may be damaged!

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page 5 of 27
Due to the high compression ratio of the pumps, pressure at the outlet port might be
generatedbeinghigherthanthemax. permittedpressurecompatible withthemechani-
cal 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.
Donot permitany uncontrolled pressurizing (e.g. makesure thatthe exhaustpipe-
line cannot become blocked). If you have an exhaust-isolation valve, make sure that
you cannot operate the equipment with the valve closed. Risk of bursting!
☞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
diameterof thepump connectionpipelines.
Maximumliquid level incollecting bottle:approx.80%,dependingonthe application
(in case of low boiling liquids or in case of suction of liquids which tend to foam, the
maximumliquidlevel mightbe reduced).
To the best of our knowledge the equipment is in compliance with the requirements of
theapplicable EC-directivesand harmonizedstandards (see”Declarationofconform-
ity”)with regardtodesign, typeand model,especiallydirectiveIEC 1010.This directive
givesin detailconditions, underwhichthe equipmentcan beoperatedsafely(seealso
IPdegree ofprotection).
☞Adoptsuitable measuresincase ofdifferences,e. g.usingthe equipmentoutdoors,
installation in altitudes of more than 1000 m above mean sea level, conductive
pollutionor dewiness.
Pay attention to symbol ”hot surfaces”on the equipment.
☞Adopt suitable measures to prevent any danger arising from the formation of hot
surfaces or electric sparks.
The pumps have no approval for operation in or for pumping of potentially ex-
plosiveatmospheres.
Ifpumping different substances, purgethe pumpwith inertgas prior tochanging the
pumped media in order to pump out residues and to avoid reactions of the pumped
substances with each other with and the pump material. Ensure that the materials of
the wetted parts are compatible with the pumped substances, see section ”Technical
data”.
Takeintoconsideration interactions and chemical reactions ofthe pumpedmedia.
Thepumps arenot suitable for pumpingsubstances whichmayform depositsinside
thepump.
☞If there is a danger of the formation of deposits in the pump chamber (check inlet
andoutlet ofthepump) inspectthepumpchamberregularlyand cleanifnecessary.
☞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).
☞Make sure ventilation is adequate if pump is installed in a housing or if ambient
temperatureis elevated.
Complywithallrelevant safety requirements (regulationsand guidelines)and adopt
suitable safety measures.
☞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: Flexibleelements tendto shrinkwhen evacuated.

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page 6 of 27
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 temperatureswithoutair.
Thepumpsarenot suitable topumpself inflammable substances,substances which
areinflammable withoutairandexplosive substances.
The pumps are not suitable for pumping dust and have no approval for operation
belowground.
☞Adoptsuitable measuresto preventthe releaseofdangerous, explosive,corrosive
or polluting fluids.
☞The user must take suitable precautions to prevent any formation of explosive
mixtures in the expansion chamber or at the outlet. 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
appropriatesafety-clothing andsafety glasses.
☞☞
☞☞
☞Use appropriate safety work materials and methods if necessary,e.g.steam
sterilization, sterilization indicators or germicides.
☞Use the system only in combination with the integrated hydrophobic filter (steriliz-
able)to protectpump andenvironment(people).
☞Observethe reagentmanufacturer´sinformation.
☞Obey applicable regulations when disposing of chemicals.Take into consideration
that chemicals may be polluted.
The motor is shut down by a thermal cutout in the winding.
☞Attention:Manual reset is necessary.Switch off the pump or isolate the equipment
from mains.Wait approx.five minutes before restarting the pump.
☞Attention:In case of supply voltage below 100V, the lock of the cutout might be
restricted and thepump mightrestart on its own aftersufficient cooling down.Take
suitable precautions, if an automatic restart of the pump may lead to a critical
dangeroussituation.
☞Avoid high heat supply (e.g.due to hot process gases).
☞Ensure sufficient air admittance if pump is installed in a housing.
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
theenvironment.
Ensure that in case of failure the pump and the vacuum system always will turn into a
safe status.
Never operate a defective or damaged device.
☞Check collecting bottle for fissures regularly.Do never use a collecting bottle
with fissures nor expose it to vacuum.
☞Incase ofdiaphragm cracksor leaksin themanifold pumpedsubstances mightbe
releasedinto theenvironmentor intothe pumphousing.Toreduce theriskof leaks,
askfor adiaphragm pumpwith additionalsafety diaphragm.
☞Obeyespecially noteson operationand useand maintenance.
☞Failureof thepump (e.g.due topowerfailure)mustnot leadto acritical dangerous
situation under any circumstances.
Useonly genuine spare parts and accessories.
☞Otherwisesafety andperformanceof theequipment aswellas theelectromagnetic
compatibility of the equipment might be reduced.
Possibly the CE mark or the C/US conformity becomes void if not using genuine
spare parts.

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 7 of 27
Notesconcerningthesterilization of wettedparts(see”Technicaldata”)seesection
”Cleaning and decontaminating”.
☞☞
☞☞
☞It is the user´s responsibility to ensure effective sterilization.
TheA-weighted emissionsoundpressure levelofthe pumpdoesnot exceed70dB(A).
Measurementaccordingto ENISO 2151:2004and EN ISO3744:1995 withstandard
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,
ifnecessary,isappropriately decontaminatedbeforestarting maintenance.
Complywith localand nationalsafety 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. Motor capacitors have a typical durability in the range of 10000 to 40000 h
dependingstronglyontheoperationconditionslikeambienttemperature,humidityorload.
☞Checkevery capacitorregularlyby measuringits capacityandestimating itsopera-
tiontime. Exchangeoldcapacitorsearlyenough topreventafailure.If anoveraged
motor capacitor fails it might get hot and even melt and may cause a flame to form
which could be dangerous for persons and equipment in the vicinity.The ca-
pacitors have to be replaced by an electrician.
➨Isolate equipment from mains and wait two minutes before starting mainte-
nance to allow the capacitors to discharge.
☞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
dangeroussubstances ifcontamination hasoccurred.
☞Ensurethatthepump cannot be operatedaccidentally.Neveroperatethepump
if covers or other parts of the pump are disassembled. Never operate a defec-
tive or damaged pump.
☞Beforestarting maintenanceventthepumpand allow sufficientcoolingof thepump.
Draincondensate, ifapplicable.
Inorder tocomply withlaw(occupational, healthand safetyregulations, safetyatwork
law and regulations for environmental protection) vacuum pumps, components and
measuring instrumentsreturned tothemanufacturercanberepairedonly whencertain
procedures(see section”Notes on return to the factory”) arefollowed.

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 8 of 27
Technical data
*pump with dual range motor 100-120/200-230 V 50/60 Hz
We reserve the right for technical modifications without prior notice!
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ssaM gk 11 4

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 9 of 27
We reserve the right for technical modifications without prior notice!
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ecivedlortnocerusserP MPF/AP

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 10 of 27
BioChem-VacuuCenter BVC 21
fig.:BVC 21 230 V 50/60 Hz
diaphragmpump
pressurecontrol device catchpot
outlet
filter
connectingtube
inletdiaphragm pumpwith coupling
(doublesided sealedif removed)
➨Connectthe tubeof theVacuuHandControltothehose nozzleof thecoupling ofthe bottlehead.
➨Assemble the connecting tube with filter.
collecting
bottle
screwcap
blindcap
(forfurther
connections)
coupling
terminalbox
on/off switch
underneathwarninglabel
BVC 21 100-120/200-230 V 50/60 Hz:
on/off switch
at terminal box

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 11 of 27
BioChem-VacuuCenter BVC 01
VacuuHandControl VHC
hosenozzle
(connectionto vacuumsupply)
fixing clip
adapter
aspirationtube
controlbutton
handle
thumbwheel
lockingring
pressure
controldevice
blindcap
(for further connections)
filter
connectingtube
solenoidoperated
isolation valve
inlet isolation valve with
coupling (double sidedly
sealedif removed)
➨Assemble the screw cap with filter and connecting tube.
➨Connectthe tubeof theVacuuHandControl tothe hosenozzle ofthecoupling atthe bottlehead.
collecting bottle
screwcap
coupling
(connectionVHC)

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 12 of 27
Use and operation
Installation:
☞Max.ambient temperature:40°C
➨Remove the protective foils from the fittings at the flask head and the protective
covers from the inlet of the diaphragm pump or the solenoid operated valve.
➨Assemblethe connectingtubewith filterbetweenthe bottleheadand theinletof the
diaphragmpump (BVC21) orthe inletof thesolenoid operatedvalve(BVC01).
➨Connect the aspiration tube of the VacuuHandControl VHC to the coupling at the
bottlehead.
➨Connect the female connector of the mains cable to the pressure control device.
☞Make sure ventilation is adequate if pump is installed in a housing or if ambient
temperature is elevated.Keep a distance of min.20 cm between fans and ambient
parts.
☞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
overheat due to insufficient cooling).
☞Before switching on the pump check that mains voltage and current conform
with the equipment!
Pump with dual-voltage motor:
☞Check that the voltage changeover switch underside the terminal box is posi-
tioned correctly.
Attention: If the pump is switched on with the voltage not correctly selected,
the motor may be damaged! Pay attention to the warning label on the on/off
switch and remove after having set the voltage changeover switch to the correct
position!
Selecting the supply voltage:
Attention:
Before starting the pump, check that
the voltage selection switch under-
side the terminal box is correctly
positioned.
Change the selection at the voltage
changeover switch only if the pump
is separated from mains.
Voltage selection switch:
Use a screw driver to adjust the supply
voltage on the voltage changeover
switch at the terminal box of the pump:
”115”correspondsto100-120Vand
”230”correspondsto 200-230V.
During operation:
Thepump achievesits pumping speed, ultimate total vacuum andvapourpumping
rateonly atoperating temperature(after approx.15minutes).
☞Preventinternal condensation,transferofliquids ordust.Thediaphragmand valves
will be damaged, if liquids are transfered through the pump in significant amounts.

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 13 of 27
The motor is shut down by a thermal cutout in the winding.
☞Manualresetisnecessary.Switchoff thepumpor isolatetheequipmentfrom mains.
Wait approx.five minutes before restarting the pump.Identify cause of failure and
eliminate.
☞Attention:In case of supply voltage below 100V, the lock of the cutout might be
restricted andthe pumpmightrestart on its ownaftersufficient coolingdown.Take
suitable precautions, if an automatic restart of the pump may lead to a critical
dangeroussituation.
Operate the system only with the integrated hydrophobic filter.
☞Protection of the pump against liquids and contamination.
☞Protectionofthe environment/useragainst contamination(risk ofinfection!).
An automatic pressure control switches the vacuum pump according to the require-
ments and provides the appropriate vacuum for the next aspiration.
Max. permitted power draw atthe vacuumpump connection:6A ohmic,1.5A induc-
tive.
Shutdown:
Short-term:
Hasthe pumpbeen exposedto condensate?
➨Allow the pump to continue to run at atmospheric pressure for a few minutes.
Hasthe pumpbeen exposedto mediawhich maydamagethepumpmaterials orform
deposits?
➨Check and clean pump heads if necessary.
Long-term:
➨Takemeasuresas describedin section short-term shutdown.
➨Separatepump fromthe apparatus.
➨Close inlet and outlet port (e.g.with transport caps).
➨Store the pump in dry conditions.

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carefully the validity of this document with respect to his product. Manual-no.: 999054 / 15/12/2009
page 14 of 27
VacuuHandControl VHC
Theinstrumentallows theaspirationof excess liquids.TheVHCis suppliedcompletely withthree different
adapters (included in delivery) to hold with pasteur pipettes, capillaries and pipette tips (100 µl).
Push the locking ring on the control button (release aspiration
tube).
Switch off pump.
Aspiration of liquid:
Press control button until the liquid has been aspirated. Re-
lease the control button to stop aspiration.
Forcontrolled aspirationofexcess liquids,the aspirationspeed
can be regulated by using the integrated control button. Small
amountsofliquids canbetakenup manuallybyusingthe thumb
wheel and then sucked into the collecting bottle.
Beforeaspiration:
Push back the locking ring from the control button.
Choosethe appropriateadapterandcarefully insertthe pipette
intothe adapter.
Position pipette tip by turning the fixing clip in such a way that
working iscomfortableandfatigue-proof.Removeadapterfrom
fixing clip if is hard to turn. Squeeze fixing clip and turn to de-
sired position. Put adapter back in fixing clip.
Attention:Never insertfilled pipettesdue toriskof contamina-
tion and infection.Wear protective gloves!
Working at different work places:
Disconnect bottle VTC with VacuuHandControl VHC from the
inlet of the pump.The bottle VTC is portable.If the aspiration
effect ceases, connectVTC to the diaphragm pump for a short
time until the pump is switched off by the automatic pressure
control.
Afteraspiration:
Carefully pull pipette out of the adapter.
Attention:Risk ofcontaminationand infection.Wearprotective
gloves and eye protection! Dispose of pipettes according to
appropriateregulations.

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page 15 of 27
Check level of liquid in the collecting bottle regularly.
Maximum liquid level in collecting bottle: approx.80 %,de-
pending on the application (in case of low boiling liquids or in
case of suction of liquids which tend to foam, the maximum
liquidlevel mightbe reduced).
Emptying of the collecting bottle:
☞Switchoffpump orisolate pumpfrom system,vent thesys-
tem (release VHC). Remove the connecting tube from the
filter, isolate connections in case.
☞Remove screw cap from the collecting bottle. Remove bot-
tlefrom thesupport.Sterilizeand disposeof collectedliquid
accordingto appropriateregulations.
Attention: Do not remove connections in case of liquid in the
tube.Donottouchcontaminatedparts whenremovingthescrew
cap.Risk ofinfection!Wearappropriateprotectiveclothing,e.g.
gloves.
Thehydrophobic filterretainswater andaqueoussolutions also
inthe form ofaerosols.Whenusing solvents ordue toevapora-
tion of water, condensate may be recovered in the catchpot.
☞Removejointclipandcatchpotanddraincondensateincase.
Important: Complywith applicableregulationswhen disposing
of solvents.
Changefilter ifnecessary (contaminated,no orbad aspiration,
pressure control device switches without demand of vacuum).
☞Useonly theoriginalsparepart andsterilizeand disposeof
thefilter accordingto appropriateregulations.
Note: After disinfection with alcohol allow the filter to dry com-
pletely because the filter may become clogged by alcohol.
filter
catchpot
Do not remove the metal fitting at the screw cap.
If the fitting is loose, tighten the fitting carefully.
metal fitting
screwcap

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page 16 of 27
Accessories - spare parts
Filter (hydrophobic) ............................................... 63 82 66
Silicone tube (1 m) NW 9/6..................................... 63 82 63
(connectingtube)
PVC tube (1 m) NW 12,8/6,4 ................................... 63 82 17
Collecting bottleVacuuTransContainerVTC ......... 68 80 57
(withfilter, couplingandblindcap)
Bottle with screw cap ............................................. 63 82 46
VacuuHandControlVHC ......................................... 68 80 56
ConnectionsetVHC ............................................... 68 80 60
(to connect aVHC to theVTC)
Silicone tube (2m) NW 6/3...................................... 63 81 99
(aspirationhoseforVHC)
Catchpot 250 ml...................................................... 63 88 70
Joint clip................................................................. 63 83 55
Pressure control device complete......................... 63 82 23
Tube clamp ............................................................. 63 82 16

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page 17 of 27
Troubleshooting
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èehtfodeepsgnipmupoN ?pmup
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qecivedlortnocerusserP .yltneuqerfsehctiws
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qgninnursipmuP .ylsuounitnoc
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A service manual with exploded view drawings, spare part lists and directions for
repairisavailable onrequest (onlyin Germanor English).
☞The service manual is for trained service people.

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.: 999054 / 15/12/2009
page 18 of 27
Tools:
-Phillips screw driver size 2
-Open-endedwrenchw/f17
-Hex key size 5
-Facewrench withtorque indicator
Diaphragm .................................................................................................................................63 97 86
Valve ..........................................................................................................................................63 88 36
Face wrench withtorque indicator ..............................................................................................63 75 80
Replacing diaphragms and valves
Allbearings areencapsulatedand arefilledwithlong-lifelubricant. Undernormaloper-
ating conditions, the pump is maintenance free.The valves and the diaphragms are
wear parts.If the rated ultimate vacuum is no longer achieved or in case of increased
noiselevel, thepump interior,the diaphragmsand thevalvesmust becleanedandthe
diaphragms and valves must be checked for cracks or other damage.
Depending on individual cases it may be efficient to check and clean the pump heads
ona regularbasis. Incase ofnormal wearthe lifetimeof thediaphragms andvalves is
>10000 operatinghours.
☞Preventinternal condensation,transferofliquids ordust.Thediaphragmand valves
will be damaged, if liquids are pumped in significant amount.
If the pump is exposed to corrosive gases or vapour or in case of deposits, mainte-
nanceshould becarried outfrequently.
☞Regular maintenance will improve the lifetime of the pump and also protect both
personeland environment.
Before starting maintenance vent the system, isolate the pump and other compo-
nents from the vacuum system and the electrical supply.Drain condensate if applica-
ble, avoid the release of pollutants. Allow sufficient cooling of the pump. Ensure that
the pump cannot be operated accidentally. Never operate the pump if covers or
otherparts ofthepump are disassembled.Neveroperate adefectiveor damaged
pump.
Ensure that the maintenance technician is familiar with the safety procedures which
relate to the products processed by the pumping system.
Attention: The pump might be contaminated with the process chemicals that have
beenpumped duringoperation. Ensurethatthe pumpis decontaminatedbeforemain-
tenance and take adequate precautions to protect people from the effects of danger-
ous substances if contamination has occurred.
☞Wear appropriate safety-clothing when coming in contact with contaminated com-
ponents.
☞☞
☞☞
☞Pleasereadsection”Replacingdiaphragmsand valves” completely before start-
ing maintenance.
Partially the pictures show pumps in other versions.This doesn’t influence replacing diaphragms and
valves of the pump.

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.: 999054 / 15/12/2009
page 19 of 27
housingcover
Cleaning and inspecting the pump head:
housing
connectingrod
diaphragmsupport disc diaphragm
headcover diaphragm clampingdisc
valve
washer
➨Useopen-ended wrenchw/f17, removethescrew-in fittings
together with the hose from the pump heads.
➨To checkthe valvesusehexkey size 5toremovefoursocket-
head screws from pump head and remove housing cover
with head cover and valves.
☞Never remove parts by using a spiky or sharp-edged tool
(e.g.screw driver),we recommendtouse arubber malletor
compressed air (to be blown carefullyinto port).
➨Remove head cover carefully from housing cover.Note po-
sition of valves and remove them.
☞Replace valves if necessary.
☞Use petroleum ether or industrial solvent to remove depos-
its. Do not inhale.
View of the disassembled pump head parts

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.: 999054 / 15/12/2009
page 20 of 27
Assembling pump head:
➨Byturning eccentricbushing (frontof connectingrod), bring
connecting rod into a position in which diaphragm is in con-
tact with housing and centred with respect to bore.
Replacing the diaphragm:
☞Checkdiaphragmfor damageand replaceif necessary.
➨To do so use Phillips screw driver to remove four counter-
sunkhead screwsand liftoff housingplatewithratingplate.
☞Use petroleum ether or industrial solvent to remove depos-
its if necessary. Do not inhale.
➨Use a face wrench to remove diaphragm support disc.
➨Checkfor washersunder clampingdisc. Makesure thatthe
originalnumber isreassembled.
☞Smaller number of washers: The pump will not attain ulti-
mate vacuum. More washers: Clamping disc will hit head
cover; noise or even blockade of the pump.
➨Usefacewrenchwithtorqueindicator (recommended:face
wrench with torque indicator fromVACUUBRAND,Cat.-
No.: 63 75 80) to assemble diaphragm clamping disc, dia-
phragm and diaphragm support disc (and eventually wash-
ers) to the connecting rod.
☞Make sure that the square head screw of the diaphragm
clamping disc is correctly seated in the guide hole of the
diaphragmsupportdisc.
Optimum torque for the diaphragm support disc: 6 Nm.
☞The optimum torque is achieved if the pointer in the handle
oftheVACUUBRANDfacewrench showstothelonger mark-
ingline.
➨Positionnewdiaphragm betweendiaphragm clampingdisc
withsquare headscrew anddiaphragmsupport disc.
☞Make sure that the square head screw of the diaphragm
clamping disc is correctly seated in the guide hole of the
diaphragmsupportdisc.
☞Attention: Position diaphragm with pale side to diaphragm
clampingdisc (topump chamber).