vacuubrand ME 8S User manual

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.: 696261 - 999021 / 08/05/2008
Technology for Vacuum Systems
Instructions for use
Customized equipment ME 8S
696261
Attention: Please observe the notes in the supplementary sheet.

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.: 696261 - 999021 / 08/05/2008

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.: 696261 - 999021 / 08/05/2008
Notice: Customized equipment
Date: 08.05.2008
Equipment (Product): ME 8S - 230 V 50/60 Hz
Material No.: 696261
Instructions for use for the standard equipment: ME 8
The customized product identified above is based on a standard product which
has been modified following the customer´s requirement for modification.
Therefore, certain features of the customized product are different from those of
the corresponding standard product. In general we do not have sufficient experi-
ence whether the modifications made meet the customer´s requirements. It is the
customers responsibility to check the suitability of the equipment for the in-
tended application prior to use.
The instructions for use of the standard product are enclosed.
It is the user‘s responsibility to check very carefully if specific information given
in the instructions for use can be applied to the customized product.
In particular, the following differences have to be considered:
Spare parts:
8x Valve (FFKM) .......................................................................................................................... 636972
4x Diaphragm (PTFE) .................................................................................................................. 637239
8x O-ring (FPM) ............................................................................................................................ 637090
1x Face wrench ............................................................................................................................. 637580
Wetted plastic parts are made of materials with higher resistance against pumped substances:
Attention: Check compatibility of components made of aluminium with the pumped substances.
Wetted material of seals at fittings: FPM
stnenopmoC strapdetteW
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sevlaVMKFF

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.: 696261 - 999021 / 08/05/2008

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.: 999021 / 07/05/2008
page 1 of 22
ME 8 - MZ 4 - MD 4 - MV 2
Diaphragm pumps
Instructions for use
Technology for Vacuum Systems

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carefully the validity of this document with respect to his product. Manual-no.: 999021 / 07/05/2008
page 2 of 22
After sales service:Contact your local dealer or call [phone].
Dear customer,
Your VACUUBRAND diaphragm pumps should support you for a long time without trouble and with maximal
power.Thanks to our long practical experience we have much information how you could ensure powerful
application and personal safety. Please read these instructions for use before the initial operation 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 developments in material and manufacturing technology.
Our quality maxim is the ”zero fault principle”:
Every diaphragm pump, leaving our company, is tested intensively including an endurance run of 18 hours.
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.
Every VACUUBRAND pump achieves the specifications.We feel obliged to this high quality standard.
We know that the vacuum pump can not take a part of your real work and hope that our products contribute
to an effective and trouble-free realisation of your work.
Yours
VACUUBRAND GMBH + CO KG

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page 3 of 22
Attention! Important notes!
Not permitted! Misuse may cause damage.
Caution! Hot surface!
Isolate equipment from mains.
Note.
Contents
Safety information! ....................................................................................................4
Technical data............................................................................................................7
Use and operation ...................................................................................................11
Accessories - Installation .......................................................................................12
Troubleshooting ...................................................................................................... 14
Replacing diaphragms and valves ........................................................................15
Notes on return to the factory ................................................................................19
Health and safety clearance form ..........................................................................20

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carefully the validity of this document with respect to his product. Manual-no.: 999021 / 07/05/2008
page 4 of 22
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 equip-
ment.
☞ Transport the pump at the provided handles.
Use the equipment for the intended use only (i.e. for generation of vacuum).
☞ 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 oper-
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
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 suitable
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).
☞ Make sure ventilation is adequate if pump is installed in a housing or if ambient
temperature is elevated.
Comply with all relevant safety requirements (regulations and 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: 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 mechani-
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.
Do not permit any uncontrolled pressurizing (e. g. make sure that the exhaust pipe-
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!
☞ Ensure that the system design does not allow the exhaust pipeline to become
blocked.
☞ 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.

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carefully the validity of this document with respect to his product. Manual-no.: 999021 / 07/05/2008
page 5 of 22
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 conform-
ity”) 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 outdoors,
installation in altitudes of more than 1000 m above mean sea level, conductive
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 have no approval for operation in or for pumping of potentially ex-
plosive atmospheres.
If pumping different substances , purge the pump with 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 material. Ensure that the materials of
the wetted parts are compatible with the pumped substances, see section ”Technical
data”.
Take into consideration interactions and chemical reactions of the pumped media.
The pumps are not suitable for pumping substances which may form deposits inside
the pump.
☞ If there is a danger of the formation of deposits in the pump chamber (check inlet
and outlet of the pump) inspect the pump chamber regularly and clean if necessary.
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.
The pumps are not suitable to pump self inflammable substances, substances which
are inflammable without air and explosive substances .
The pumps are not suitable for pumping dust and have no approval for operation
below ground.
Ensure that the materials of the wetted parts are compatible with the pumped sub-
stances, 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 or at the outlet. In case of e.g. 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.
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.

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.: 999021 / 07/05/2008
page 6 of 22
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.
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 or the C/US
conformity becomes void if not using genuine spare parts.
Ensure that maintenance is done only by suitably trained and supervised technicians.
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. Motor capacitors have a typical durability in the range of 10000 to 40000 h
depending strongly on the operation conditions like ambient temperature, humidity or load.
☞ Check every capacitor regularly by measuring its capacity and estimating its opera-
tion time. Exchange old capacitors early enough to prevent a failure. If an overaged
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.
Before starting maintenance vent the system, isolate the pump and other compo-
nents from the vacuum system and the electrical supply, drain condensate and allow
sufficient cooling of the pump.
Before starting maintenance, wait two minutes after isolating the equipment from
mains to allow the capacitors to discharge.
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.
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 the pump might restart on its own after sufficient cooling down.Take
suitable precautions, if an automatic restart of the pump may lead to a critical
dangerous situation.

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carefully the validity of this document with respect to his product. Manual-no.: 999021 / 07/05/2008
page 7 of 22
Technical data
We reserve the right for technical modification without prior notice!
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* Pump with dual-voltage motor (100-120/200-230 V 50/60 Hz)

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carefully the validity of this document with respect to his product. Manual-no.: 999021 / 07/05/2008
page 8 of 22
We reserve the right for technical modification without prior notice!
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➨ C°08+otC°01-
Gas inlet temperatures:

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carefully the validity of this document with respect to his product. Manual-no.: 999021 / 07/05/2008
page 9 of 22
ME 8
MZ 4
inlet
outlet
with silencer
pump rating plate
outlet with silencer
inlet
pump rating plate
outlet with silencer

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.: 999021 / 07/05/2008
page 10 of 22
MD 4
MV 2
inlet
pump rating plate
outlet with silencer
inlet
pump rating plate
outlet with silencer

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carefully the validity of this document with respect to his product. Manual-no.: 999021 / 07/05/2008
page 11 of 22
Use and operation
Installing in a vacuum system:
☞ Avoid throttling losses by using connecting pipes with large diameter and keeping
them as short as possible.
☞ Reduce the transmission of vibration and prevent loading due to rigid pipelines.
Insert elastic hoses or flexible elements as couplings between the pump and rigid
pipes.
☞ Use a suitable valve to isolate the pump from the vacuum system if you need to
allow the pump to warm up before pumping condensable vapours or if cleaning the
pump before it is switched off.
☞ Connect the exhaust to a suitable treatment plant to prevent the discharge of dan-
gerous gases and vapours to the surrounding atmosphere. If necessary use a catch-
pot to prevent the drainage of condensate back into the pump and run the exhaust
line downwards.
During operation:
Max. ambient temperature : 40 °C
☞ Make sure ventilation is adequate if pump is installed in a housing or if ambient
temperature is elevated.
☞ 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).
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 the pump might restart on its own after sufficient cooling down.Take
suitable precautions, if an automatic restart of the pump may lead to a critical
dangerous situation.
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 mechani-
cal stability of the system.
Do not start the pump if the pressure difference between inlet and outlet ports exceeds
max. 1 bar. Attempts to start the pump at higher difference may cause blockade and
damage of the motor.
☞ Check compatibility with max. permitted pressure at outlet and max. pressure dif-
ference between inlet and outlet ports.
Prevent internal condensation, transfer of liquids or dust. The diaphragm and valves
will be damaged, if liquids are pumped in significant amounts.
A warm up period (approx. 15 min.) is required to ensure that the rated ultimate total
pressure and pumping speed are attained.
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 form
deposits ?
☞ Check and clean pump heads if necessary.
Long-term:
➨ Take measures as described in section short-term shutdown.
➨ Separate pump from the apparatus.
➨ Close manual gas ballast valve (see ”accessoires”).
➨ Close inlet and outlet port (e. g. with transport caps).
➨ Store the pump in dry conditions.

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page 12 of 22
Accessories - Installation
Non return valve (flapper valve) ................................ 639683
(Simultaneous operation of two systems at different pressure
levels, stainless steel/FFKM, leak rate < 10
-3
mbar x l/s for pres-
sure differences > 500 mbar.)
Hose (caoutchouc) 10 mm ID .................................... 686002
Digital vacuum gauge DVR 2 .................................... 682902
ME 8
Small flange NW 16 .................................................. 662592
Clamping ring NW 10/16 (aluminium) ........................ 660000
Centring ring NW 10/16 (NBR)................................... 660190
MZ 4
Small flange NW 16 ................................................... 662590
Clamping ring NW 10/16 (aluminium) ........................ 660000
Centring ring NW 10/16 (NBR)................................... 660190
MZ 4
Gas ballast valve ....................................................... 685812
(Note seal rings when assembling.)
MD 4
Gas ballast valve ....................................................... 685812
(Note seal rings when assembling.)

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page 13 of 22
Assemble control valve first, then align and fasten gauge.
ME 8
Vacuum adjustment device (inlet) ........................... 696840
An additional part is necesssary:
Hollow bolt .................................................................. 639757
MZ 4
Vacuum adjustment device (inlet) ........................... 696840
MD 4
Vacuum adjustment device (inlet) ........................... 696840
MV 2
Vacuum adjustment device (inlet) ........................... 696840

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page 14 of 22
Troubleshooting
A service manual with exploded view drawings, spare parts list and directions for repair
is available on request.
☞ The service manual is for trained service people.
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page 15 of 22
Set of seals (diaphragms and valves) for ME 8 / MZ 4 / MD 4 ...................................................... 696812
Set of seals (diaphragms, valves and O-rings) for MV 2 ............................................................... 696834
O-rings for MD 4 .................................................................................................................... 8 x 637090
Face wrench with torque indicator ................................................................................................ 637580
Replacing diaphragms and valves
All bearings are encapsulated and are filled with long-life lubricant. Under normal oper-
ating conditions, the pump is maintenance free.The valves and the diaphragms as well
as the motor capacitors are wear parts. If the rated ultimate vacuum is no longer
achieved or in case of increased noise level, the pump interior, the diaphragms and the
valves must be cleaned and the 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
on a regular basis. In case of normal wear the lifetime of the diaphragms and valves is
> 10000 operating hours.
☞ Prevent internal condensation, transfer of liquids or dust.The diaphragm and 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-
nance should be carried out frequently.
☞ Regular maintenance will improve the lifetime of the pump and also protect both
man and environment.
Before starting maintenance vent the system, isolate the pump and other compo-
nents from the vacuum system and the electrical supply. Avoid the release of pollut-
ants. Allow sufficient cooling of the pump. Before starting maintenance, wait two min-
utes after isolating the equipment from mains 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.
Ensure that the maintenance technician is familiar with the safety procedures which
relate to the products processed by the pumping system.
The pump might be contaminated with the process chemicals that 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.
☞ Wear appropriate safety-clothing when you come in contact with contaminated com-
ponents.
☞☞
☞☞
☞Please read section ”Replacing diaphragms and valves” completely before star-
ting maintenance.
Partially the pictures show pumps in other versions.This doesn´t influence replacing diaphragms and
valves of the pump.
Tools required (metric):
- Phillips screw driver size 2
- Open-ended wrench w/f 17
- Hex key size 5
- Face wrench with torque indicator

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page 16 of 22
➨ To check the valves use hex key to remove four socket-
head screws from pump head and remove housing cover
with head cover, valves and O-rings (MD 4 / MV 2 only).
☞ Never remove parts by using a spiky or sharp-edged tool
(e.g. screw driver), we recommend to use a rubber mallet or
compressed air (to be blown carefully into 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.
Cleaning and inspecting the pump heads:
➨ Use open-ended wrench, remove screw-in fittings from all
pump heads.
View of the disassembled pump head parts
seal rings (only MD 4 / MV 2)
housing cover
diaphragm support disc
housing
rod
washer
diaphragm
diaphragm clamping disc
head cover
valve