Elmo Rietschle C-VLR 62 OXY User manual

C
C-Serie
C-Series
Klaue
Claw
Edition: 1.0 ·27.09.2022 ·BA 882-31-OXY-EN
Operating Instructions
C-VLR 62 | 122 OXY
Vacuum pump
Translation of the original Operating Instructions
Keep in a safe place for future reference!

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Table of contents
Table of contents
1 Foreword................................................................... 4
1.1 Principles ................................................................... 4
1.2 Target group ................................................................. 4
1.3 Supplier documentation and accompanying documents .............................. 4
1.4 Directives, standards, laws ..................................................... 4
1.5 Copyright ................................................................... 4
1.6 Disclaimer .................................................................. 5
1.7 Specialist terms and meaning ................................................... 5
2 Safety ..................................................................... 6
2.1 General..................................................................... 6
2.2 Labelling of warnings .......................................................... 6
2.3 Symbols and meaning ......................................................... 6
2.4 Intended use ................................................................ 8
2.5 Inadmissible operating modes................................................... 8
2.6 Personnel qualification and training............................................... 8
2.7 Personal protective equipment .................................................. 9
2.8 Safety-conscious working ...................................................... 9
2.9 Responsibilities of the user ..................................................... 10
2.10 Hazardous substances ........................................................ 10
2.10.1 Conveying media ..................................................... 10
2.10.2 Auxiliary materials and lubricant.......................................... 10
2.11 Safety equipment, monitored functions............................................ 11
2.12 Emergency Stop / Emergency Off ................................................ 11
2.13 Protection of environment ...................................................... 11
3 Transport and storage ........................................................ 12
3.1 Transport ................................................................... 12
3.1.1 Unpack and check the as-delivered condition............................... 12
3.1.2 Lift and transport ..................................................... 12
3.2 Storage..................................................................... 13
3.2.1 Ambient conditions during storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4 Product overview and functioning .............................................. 14
4.1 Data plate................................................................... 15
4.2 Description.................................................................. 15
4.3 Fields of application........................................................... 16
5 Installation ................................................................. 17
5.1 Preparation of installation ...................................................... 17
5.2 Installation .................................................................. 17
5.3 Connection of pipes........................................................... 18
5.4 Check lubricating oil .......................................................... 19
5.5 Connect to the energy supply network ............................................ 19
5.6 Pressure monitoring ........................................................... 20

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Table of contents
6 Commissioning and decommissioning .......................................... 21
6.1 Start-up .................................................................... 21
6.1.1 Installation check ..................................................... 21
6.1.2 Check the rotation direction ............................................. 22
6.2 Operation ................................................................... 22
6.2.1 Discharge condensate ................................................. 22
6.3 Decommissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.3.1 Decommissioning of the machine ........................................ 23
6.3.2 Storing the machine ................................................... 23
6.4 Recommissioning............................................................. 23
7 Maintenance and repair....................................................... 24
7.1 Ensure operational safety....................................................... 24
7.2 Maintenance table ............................................................ 25
7.3 Preparing maintenance works ................................................... 25
7.4 Clean vacuum pump .......................................................... 25
7.5 Lubricating Oil ............................................................... 26
7.5.1 Refilling of oil ........................................................ 26
7.5.2 Oil change........................................................... 27
7.6 Air filter ..................................................................... 27
7.7 Motor and coupling ........................................................... 28
7.7.1 Motor .............................................................. 28
7.7.2 Coupling ............................................................ 28
7.8 Repair / service .............................................................. 29
7.9 Spare parts.................................................................. 30
8 Errors...................................................................... 31
9 Disassembly and disposal..................................................... 32
9.1 Disassembly................................................................. 32
9.2 Disposal .................................................................... 32
10 Technical Data .............................................................. 33

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Foreword
1 Foreword
1.1 Principles
These Operating Instructions:
• Are part of the following contactlessly operating claw vacuum pumps C-VLR 62 | 122 OXY with active
cooling
• Describe how to use these pumps safely and properly in all life phases and they apply to all responsible
persons
• Include general information on installation, commissioning, maintenance and inspection
• Must be available at the place of application.
Figures presented in these Operating Instructions serve for better understanding and can deviate from the
components installed. This does not influence the validity of the details set out in the instructions.
1.2 Target group
Target group for these Operating Instructions are the technically trained specialist personnel which have
been qualified by appropriate training and instruction.
1.3 Supplier documentation and accompanying documents
Document Contents No.
Supplier documentation
Operating Instructions BA 882-31-OXY
Declaration of Conformity C 0107
Declaration of no-objection 7.7025.003.17
Data sheet Technical data and characteristic curves D 882-31-OXY
Spare parts list Spare parts documents E 882-31-OXY
Info sheet Storage guideline for lubricants I 100
Storage guideline for machines I 150
The documents can be ordered from our Service or downloaded using the following link:
• http://www.gd-elmorietschle.com
1.4 Directives, standards, laws
See Declaration of Conformity.
1.5 Copyright
These Operating Instructions are intended for the customer's internal purposes.
Unless expressly permitted, passing on to third parties, copying of these documents, except for internal pur-
poses, as well as using and providing their contents to third parties, even in excerpts, is prohibited.
Contraventions will lead to claims for damages.

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Foreword
1.6 Disclaimer
Please note that we cannot accept any liability for damages arising from failure to observe the instructions.
Gardner Denver Schopfheim GmbH does not assume liability for the following cases:
• Not intended use
• Not complying with these instructions
• Nonobservance of all documents and specifications belonging to the overall documentation
• Erection, operation, maintenance and repair by insufficiently qualified staff
• Modification or removing of the part or serial number
• Using spare parts that have not been approved by Gardner Denver Schopfheim GmbH
• Unauthorised modifications to the machine or the accessories supplied by Gardner Denver Schopfheim
GmbH
Please, also consider that repairs are only allowed to be done by authorised workshops using original spare
parts; otherwise our guarantee will expire.
1.7 Specialist terms and meaning
Term Explanation
Machine Pump and motor combination ready for connection
Motor Pump drive motor
Vacuum pump Machine for creating underpressure (vacuum)
Claw Design or operating principle of the machine
Suction capacity Vacuum pump, volumetric flow related to the condition in the inlet con-
nection, specified in m3/h
Final pressure (abs.) The maximum vacuum that a pump reaches while the inlet opening is
closed, displayed as absolute pressure in mbar (abs.)
Permanent vacuum Vacuum or the inlet pressure range, at which the pump operates in con-
tinuous operation.
The permanent vacuum or inlet pressure is ≥ than the final vacuum and <
than the atmospheric pressure.
Noise emission Noise emitted at a specific loading state indicated as a numeric value,
sound pressure level dB(A) as per EN ISO 3744.
Abbreviation Meaning
Fig. Figure
Tab. Table
C-VLR Model description of the vacuum pump
OXY Machine pumps for delivering gases with increased percentage of oxy-
gen and other oxidising agents

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Safety
2 Safety
The manufacturer shall not be liable for damages due to non-observance of the whole documentation.
2.1 General
These operating instructions contain basic instructions for installation, commissioning, maintenance and in-
spection work which must be obeyed to ensure the safe operation of the machine and prevent physical and
material damage.
Observe the safety instructions in all chapters.
The operating instructions must be read by the responsible technical personnel / user before installing and
commissioning and must be fully understood. The contents of the operating instructions must always be
available on site for the technical personnel / user. Instructions attached directly to the machine must be
obeyed and must always remain legible. For example, this applies to:
• Symbols for connections
• Data plate and motor data plate
• Information and warning signs
The data plates on the vacuum pump may not be removed, even if the machine is resold. For all queries
about the product, please always quote the serial number.
The user is responsible for observing local regulations.
2.2 Labelling of warnings
Warning Danger level
DANGER ...warns of a hazardous situation, which will lead to death or life-threatening
injuries if not avoided.
WARNING ...warns of a potentially dangerous situation, which can lead to death or seri-
ous injuries if not avoided.
CAUTION …warns of a hazardous situation, which can cause slight or medium personal
injuries if not avoided.
NOTICE ...warns of a situation that can cause damages to or destruction of material
assets if not avoided.
2.3 Symbols and meaning
Symbol Explanation
ØInstructions, action
a), b),... Instructions in several steps
Results
Reference

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Safety
Symbol Explanation
Warning signs Obey all safety instructions with this symbol in order to avoid injury or
death.
It warns of the potential risk of injury
It warns of electrical voltage
It warns of suspended loads
It warns of hot surface
Caution: Use of oxygen
Mandatory signs Obey all instructions with this symbol in order to avoid injury or death.
Observe the Operating Instructions
Wear eye protection
Wear protective gloves
Wear safety shoes
Wear ear protection
Use a dust mask
Disconnect the plant and secure it against unexpected restart
Information, note
Protection of environment

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Safety
2.4 Intended use
If not used as intended, this can cause dangerous operating conditions and oxidizing mixtures can be
generated.
The machine is suitable for conveying the following media:
• All non-explosive, non-combustible, non-aggressive and non-poisonous dry gases and gas-air
mixtures
• It is suitable for exhausting air or other gases with increased percentage of oxygen (content by volume
larger than 21 %) and other gaseous oxidising agents.
The machine is permitted to be operated only in such areas that are described in these operating
instructions:
ØOnly operate the machine in technically perfect condition
ØThe machine must only be operated at an ambient temperature and inlet temperature of between 5 and
40 °C
Please contact us for temperatures outside this range
ØThe permissible back pressure may not be exceeded
Maximum permissible back pressure: + 50mbar
ØFor lubrication, use the specified oil type OXY-GEAR-LUBE 160 only
Any use extending beyond this use is seen as not in accordance with the intended use.
The intended use also includes the compliance with the operating data and operating agents specified in the
operating instructions, the listed maintenance works, as well as the details in the documentation issued by
the manufacturers of components and attachments.
If used under critical conditions and/or in case of any doubts, please contact the manufacturer. Non-obser-
vance can cause machine failures.
2.5 Inadmissible operating modes
• extracting, conveying and compressing of explosive, inflammable, aggressive, oxidative or poisonous
media, e.g. dust as per ATEX zone 20-22, solvents, water steam, liquids or solids
• Erection and operation in potentially explosive environment (explosive gas/vapour/mist-air mixtures or
dust-air mixtures or hybrid mixtures of air and flammable substances)
• Using the machine in non-commercial plants unless the necessary precautions and protective measures
are taken in the plant
• Operation of the machine when it is only partially assembled
• Using the machine in areas with ionising radiation
• Back pressures on the outlet side: > +50mbar
• Modifications to machine and accessories
• Using oil that have not been approved by Gardner Denver Schopfheim GmbH
• Operation by not or not sufficiently qualified personnel
2.6 Personnel qualification and training
All works are only allowed to be done by qualified and trained specialist personnel that have been trained
about the safety regulations for handling of oxygen plants and of legal age. Unauthorised persons are not
allowed to stay within the operating area and must be prevented from entering operating rooms by suitable
measures.
ØEnsure that people entrusted with working on the machine have read and understood these operating
instructions before starting work, particularly the safety instructions for installation, commissioning, main-
tenance and inspection work
ØResponsibilities, competences and monitoring of personnel must be regulated by the operating company.

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Safety
ØThe following works are only allowed to be done by technical specialist personnel, who have been trained
and instructed for the works assigned:
• Transport only by forwarding agents
• Erection, commissioning, maintenance and inspection works, as well as troubleshooting by technical
specialist personnel trained in the use of oxygen plants
• Works on the electrical system are only allowed to be done by electricians
ØPersonnel to be trained and laypersons may only carry out work on the machine when under the su-
pervision of authorised specialist personnel and must be instructed about possible hazards in a safety
instruction.
Specialist personnel:
Persons that can evaluate work assigned to them and evaluate possible risks as a result of their training,
knowledge and experience as well as the applicable regulations.
Qualified electrician:
Specialist personnel that has obtained an electrotechnical specialist education and is familiar with work for
setting up, operation and maintenance of electrical systems and operating material.
Unauthorised persons:
Unauthorised persons are persons who cannot appropriately prove that they are qualified, trained, or in-
structed for the works on the compressor. In addition, those persons shall be seen as unauthorised who,
due to their physical, cognitive, and health abilities, are not able to recognise hazards caused by the
machine.
2.7 Personal protective equipment
The user must make sure that the required protective clothing and protective equipment is available on the
plant and used by the personnel. The national legal provisions and the national regulations for industrial
safety must be observed.
Recommended protective equipment:
Wear eye protection
Wear protective gloves
Wear safety shoes
Wear ear protection
2.8 Safety-conscious working
The following safety regulations apply in addition to the safety instructions and intended use listed in these
instructions:
• Accident prevention regulations, safety and operating regulations
• Standards and laws in force
ØHot parts of the machine must not be accessible during operation or must be fitted with a guard
ØPersons must not be endangered by the free extraction or discharge of pumped media
ØRisks arising from electrical energy must be eliminated
ØThe machine must not come into contact with flammable materials.
Risk of fire due to hot surfaces, output of hot pumped media or cooling air

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Safety
2.9 Responsibilities of the user
During the whole operating period of the machine, the operating company is obliged to prove that the limits
have been met and the required maintenance and inspection works have been performed.
The user must ensure that:
• The regulations for safety and health at work BGR 500 issued by the professional associations (Operation
of oxygen plants) or other relevant national regulations are meet.
• All works for installation, commissioning and maintenance are carried out by authorised and qualified
specialist personnel, who gained enough information by an in-depth study of the operating instructions
• All works on electrical equipment are done by an electrician in compliance with the regulations for electri-
cal installations
• The Operating Instructions are always available at the site of operation of the machine for the whole life
phase
• All safety instructions and signs on the vacuum pump are always complete and legible
• The operating and maintenance personnel take note of all safety instructions - especially of information
provided in these Operating Instructions - and observe them
• The personal protective equipment is available and is used by the personnel
• All safety-relevant regulations are met
• Unauthorised persons cannot enter the operating site
• Fire warning and firefighting possibilities have been installed and are active
• These Operating Instructions shall be amended by working instructions, as well as the duties to su-
pervise and report. With this they shall consider the operational distinctions. Among others, it refers to
instructions referring to:
• Organization of work
• Work procedures
• Specialist personnel assigned
In the event of accidents caused by the vacuum pump notify the Gardner Denver Schopfheim GmbH. Please
find contact data on the back page.
2.10 Hazardous substances
2.10.1 Conveying media
Machinery that may have contact to hazardous substances can cause serious burns, cauterisation or poi-
soning during disassembly, maintenance and repair work.
ØEach time before using our services, it is necessary for reasons of occupational safety and environmental
protection to indicate and declare hazardous substances on or in the plant.
ØSend the completed and signed declaration of no objection back to Gardner Denver Schopfheim. If no
declaration has been sent, we must assume that the plant is free from such substances. In case of doubt,
our service department reserves the right to reject the acceptance until the safety has been determined
without doubt.
2.10.2 Auxiliary materials and lubricant
Incorrect auxiliary materials and lubricants may decompose at high temperatures. The resulting vapours may
be harmful to health and cause fires.
ØUse exclusively the recommended auxiliary materials and lubricants
ØObserve the oil recommendation sign on the machine
ØObserve the safety data sheets of the substances used
ØEnsure proper use
ØObserve the maintenance intervals

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Safety
2.11 Safety equipment, monitored functions
Missing or non-functional safety equipment may lead to dangerous operating states and thus result in life-
threatening injuries.
ØDo not modify or bypass safety equipment and safety functions
ØCheck the function at regular intervals
2.12 Emergency Stop / Emergency Off
Missing safety equipment may lead to hazardous operating states. This can result in severe to mortal injury.
ØThe machine does not have its own Emergency Stop or Emergency Off. This must be implemented by
the user, for instance, by integration of the machine in the user's safety concept.
2.13 Protection of environment
Environmental damage may be caused by the incorrect disposal of operating material and materials. For
questions about environmental protection as well as national regulations, please consult your local disposal
company.
ØAll operating materials as well as all gases, vapours or liquids, e.g. lubricating oil escaping during opera-
tion and maintenance must be collected and disposed of in an environmentally friendly manner.

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Transport and storage
Fig. 1 Load handling equipment for lifting and transporting
1
1Eyebolt
3 Transport and storage
3.1 Transport
WARNING Death by falling down or tipping over of the transported goods!
Falling or tipping over of transported goods can cause serious or fatal injuries.
Limbs can be crushed.
ØSelect the lifting device according to the total weight to be transported.
ØSecure the machine against tipping over and falling.
ØAlways attach the machine on all present load handling equipment.
ØDo not stand underneath a suspended load.
ØPut the goods to be conveyed on a horizontal base
(max. inclination: 10 ° in all directions).
3.1.1 Unpack and check the as-delivered condition
a) Unpack the machine on receipt and check for transport damage.
b) Immediately notify the manufacturer of transport damages.
c) Check the scope of deliveries for completeness.
d) Dispose of the packaging in accordance with the local regulations in force.
3.1.2 Lift and transport
WARNING Bodily injury resulting from improper operation!
Improper operation of the lifting gear and the transported goods can cause seri-
ous or fatal injuries.
ØLift and transport the machine only on the permissible load handling
equipment.
ØLoads crosswise to the load handling equipment are not permitted.
ØAvoid impact stress.
ØWear your personal protective equipment.

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Transport and storage
The pump is supplied on a pallet.
a) Unload the pump using a forklift or pallet truck and transport to the installation location.
b) Tighten the eyebolt (Fig. 1/1) to the head contact.
c) The machine must be suspended on the eyebolt using the lifting device for lifting.
d) Lift the pump from the pallet and align.
3.2 Storage
NOTICE Material damage caused by improper storage!
Improper storage can damage the machine.
ØObserve the storage conditions described below.
3.2.1 Ambient conditions during storage
• Dust-free
• In a dry place
• Vibration free
• Protected against sun radiation
• Storage temperature: -10°C to +60°C
• Rel. air humidity: max. 80 %
• Close the openings air-tight
The machine must be stored in a dry environment with normal air humidity. It should not be
stored for more than 6 months.
See Info "Storage instructions", page 4.

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A Vacuum connection G 1½
BExhaust air outlet G 1½
B1Exhaust silencer
DInlet flange with non-return valve
ECooling air inlet
FCooling air outlet
HOil filling point
IOil sight glass
KOil discharge point
MOil recommendation plate
NData plate
ODirection of rotation arrow
PDrive motor
P1Motor data plate
QHot surfaces > 70 °C
XCondensate drain
Fig. 2 Vacuum pump C-VLR 62 OXY (C-VLR 122 has the same design)
Product overview and functioning
F
F
E
B1
A
B
K
P
Q
N
X
F
I
P1
E
D
O
H M
4 Product overview and functioning

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Fig. 3 Data plate (example)
Product overview and functioning
Johann-Sutter-Straße 6+8, D-79650 Schopfheim, www.elmorietschle.de Made in Germany
EN 60034
C-VLR 62 OXY (31)
100,00 / 100,00 mbar (abs)
62,0 / 74,0 m³/h
SN: SC10436756001
1,50 I 1,80 kW
vacuum pump
1450 I 1745 /min
ID: 10289731GD
S1 100%
BJ: 2022
1 Model / size (mechanical version)
2 Serial number
3 Year of construction
4 Data matrix barcode
5 Article No.
6 Speed 50Hz / 60Hz
7 Motor output 50Hz / 60Hz
8 Operating mode
9 Suction capacity
10 Final pressure (abs.)
7
4 5
10
2
689
1 3
4.1 Data plate
The following information is encoded as barcode:
• Material number (MA)
• Production order (PR)
• Serial Number (SC)
4.2 Description
The C-VLR62| 122 type with active cooling is a double-shaft rotary-piston vacuum pump in which the claws
roll off against each other without contacting each other and dry. The counter-rotating claw rotors are syn-
chronised by a gear pair in the gearbox. The gears of the synchronized gearbox and the bearings are lubri-
cated with oil. These components are in a gear case that also contains the oil supply. Oil conveying device
always ensures that the bearings and the gears are sufficiently supplied with oil at all permissible speeds.
The gearbox and the compression chamber are separated from each other by special seals.
The C-VLR 62 | 122 is enclosed in an insulation hood. In order to dissipate the generated heat away from the
compressor, the cooling air is sucked through between the compressor and the hood using a drum fan that
sucks in the fresh cooling air (Fig. 2/E) and discharges the heated air out of the cooling air outlet (Fig. 2/F). It
is driven via a coupling by a flanged, three-phase standard motor.
The VLR 62 | 122 has a connection flange on the inlet side and an exhaust silencer on the outlet side
(Fig. 2/B1). An integrated non-return valve prevents the evacuated system from being ventilated after the
pump has stopped. This non-return valve includes a mesh filter to avoid damages due to pollution. Depend-
ing on the mechanical variant, a vacuum relief valve is integrated in the machine.
To be able to distinguish them from the standard variants, the VLR OXY pumps are blue painted.

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Product overview and functioning
4.3 Fields of application
The claw vacuum pumps are suitable for sucking out of air or other gases with increased percentage of oxy-
gen (content by volume above 21 %).
They are suitable for the evacuation of closed systems or for a continuous vacuum within the following in-
take pressure ranges: 100 - 1000 mbar (abs.)
The maximum suction capacity with unrestricted suction is 62 m3/h or 120 m3/h at 50 Hz.
Data sheet D 882-31-OXY shows the dependency of the suction capacity on the intake pressure.
XD model: The vacuum pump is equipped with a corrosion-protective coating and is suitable for conveying
water-damp gases (water vapour).
If the unit is switched on more frequently (at regular intervals of approx. 10 times per hour) or at
higher ambient temperatures and inlet temperatures, excess temperature limit of the motor wind-
ing and the bearings may be exceeded.
Contact the manufacturer regarding such operating conditions.
Observe the ambient and intake temperature (see chapter2.4).
Observe the protection class of the motor (motor data sign).
If it is installed in the open air the unit must be protected from environmental influences (e.g. by a
protective roof).

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Installation
5 Installation
WARNING Risk to due to improper installation and commissioning!
Improper or wrong installation can cause fire and serious injuries or death.
ØOnly authorised specialist personnel that have been trained about the safety
regulations for handling of oxygen plants are allowed to install and commis-
sion the pump.
ØThe regulations for safety and health at work BGR 500 issued by the profes-
sional associations (Operation of oxygen plants) or other relevant national
regulations must be met.
5.1 Preparation of installation
WARNING Risk of fire due to inadmissible oxygen concentration!
The vacuum pump OXY is not gas-tight. For freely blowing out vacuum pumps
the percentage of oxygen in the room air will be increased. Oxygen enrichment in
the room air can cause fire.
ØSufficiently vent the place of installation. The oxygen content by volume in the
room air may not exceed 21%.
Ensure the following conditions:
• Machine freely accessible from all sides
• Do not close ventilation grids and holes
• Sufficient space for installing and removing pipes and for maintenance work, particularly for the instal-
lation and deinstallation of the machine
• No influence by external vibrations
• Hot exhaust air from other machines may not be sucked in the cooling system
• Oil filling position (Fig. 2/H), oil sight glass (Fig. 2/I) and oil drain (Fig. 2/K) must easily be available.
• For maintenance works, provide for a space of at least 50cm around the machine.
5.2 Installation
CAUTION Burns due to hot exhaust gases!
Place the freely blowing machine in a way that hazards due to hot exhaust gases
are prevented.
NOTICE Property damage caused by improper installation!
Improper erection and installation can damage the machine.
ØThe machine may only be operated when it is set up horizontally
(Max. inclination: 8 ° in all directions).
ØSecure the machine against tipping over and falling.
ØThe floor must be plane and even.
ØThe bearing surface must be designed to be able to carry the weight of the
machine (see chapter10 “Technical Data”).
ØThe floor space for installation must be at least the same size as the machine.
ØIf a non-return valve is integrated in the pump, it may not be removed.

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Installation
NOTICE Property damage from overheating!
Due to too low cooling capacity, the machine can overheat and can be damaged.
ØEnsure for a good aeration and venting of the installation room.
Observe the ambient temperature: min. +5°C, max. +40°C
ØThe cooling air inlets and the cooling air outlets must be at least 30 cm away
from the adjacent walls. Cooling air coming out must not be sucked in again.
a) Align the pump at the installation location and if necessary, bolt to the substrate.
b) If available, check optional accessories for the correct mounting and correct electrical connection.
An output reduction is noticeable when installed at more than 1000 m above sea level. In this case,
please contact us.
It is possible to install the machine on a firm base without anchoring. When installing on a sub-
structure we recommend fixing it with flexible buffers.
5.3 Connection of pipes
WARNING Risk of fire due to polluted inlet medium!
If pollutants are sucked in, especially organic substances, this can cause an
acute risk of fire.
ØTo protect the vacuum pump OXY, the user must install an appropriate filter
on the inlet side.
ØBefore connecting, the pipes must be cleaned and must be free from organic
substances.
CAUTION Risk of injury due to closed exhaust air opening!
Closed, restricted or covered exhaust air openings can cause too high back
pressure in the machine.
ØThe exhaust air opening must not be closed or restricted.
ØDo not install any blocking devices.
ØMaximum permissible back pressure: + 50 mbar
If the back pressures are higher due to the process, please contact us.
ØPrevent liquids from accumulating in the exhaust line.
ØBefore connecting hose or pipelines, the blind plugs at the exhaust air outlet
must be removed.
ØRegularly check the connected exhaust lines for pollution.
ØUse only suitable pipelines.
NOTICE Material damage resulting from too high forces and torques of the pipes
acting on the unit!
If forces and torques during installation and operation are too high, the machine
can be damaged.
ØOnly screw in pipes by hand.
ØIf necessary, use flexible connections.

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MAX
MIN
Fig. 4 Oil level in the sight glass
Installation
The vacuum connection is located on the suction flange.
a) Remove the blind plug from the vacuum connection (Fig. 2/A) and exhaust air outlet (Fig. 2/B).
b) Connect the pipe to the inlet flange (Fig. 2/ D).
c) The exhausted air can be blown out through the exhaust air outlet (Fig. 2/B) on the exhaust silencer
(Fig. 2/Z) or conducted away using a hose or pipeline.
To avoid distorting in the piping system, we recommend using compensators.
d) Check that the maximum back pressure is not exceeded!
The suction capacity of the vacuum pump is reduced if the inlet pipe is too narrow and/or too
long.
5.4 Check lubricating oil
WARNING Risk of fire due to wrong lubricating oil!
Using the wrong lubricating oil can cause an acute danger of fire.
ØTo lubricate the vacuum pumps OXY it is only allowed to use oil type OXY-
GEAR-LUBE 160.
a) Check the lubricating oil level through the oil
sight glass (Fig. 2/I) and top up, if necessary.
See also chapter7.5 „Lubricating Oil“ on
page26
5.5 Connect to the energy supply network
DANGER Danger to life if the electrical installation has not been carried out profes-
sionally!
Installation that has not been carried out professionally or properly can cause
serious injuries or death. The whole electrical system can be destructed.
ØThe electrical installation must only be carried out by a qualified electrician
observing EN 60204.
ØThe main switch has to be provided by the user.
ØThe motor must be safeguarded via a motor protection switch. This must be
installed by the operating company.
ØObserve the operating instructions of the manufacturer of the frequency con-
verter when operating the frequency converter.
NOTICE Property damage due to wrong energy supply!
Wrong operating voltages, frequencies or currents can cause loss of power or
damages to the machine.
ØThe conditions in the place of installation must comply with the details on the
motor data plate or the data plate of the frequency converter.
Please find the electrical motor data on the data plate (Fig. 3) or the motor data plate (Fig. 2/P1). The motors
comply with DIN EN 60034 and are designed in protection class IP 55 and insulation class F. The appropri-
ate connection diagram is located in the terminal box of the motor (not existing for the version with plug
connection).

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Installation
Permissible tolerances:
• ± 5 % voltage deviation referred to nominal value
• ± 2% frequency deviation
a) Compare the motor data with the data of the existing mains network (current type, voltage, network
frequency, permitted current value).
b) The direction of rotation of the motor must correspond with the direction of rotation arrow (Fig. 2/O) on
the motor flange. Check the rotation direction!
c) Connect the motor via the plug connection or directly on the terminal box.
For securing, a motor protection switch and a strain relief provide for a screwed cable connection to
connect of the connecting cable.
We recommend using motor protection circuit breakers with delayed switch off, depending on a
possible excess current. Temporary excess current can occur when the machine is started under
cold conditions.
5.6 Pressure monitoring
NOTICE Property damage!
It is not allowed to operate the pump without pressure monitoring system.
ØThe pressure monitoring system is not included in the scope of delivery and
the user has to install itself.
For monitoring the vacuum pump the customer must install a pressure monitoring device to ensure that the
minimum permissible pressure is not undershot (e.g. pressure switch as etc.). If the permissible pressure is
undershot, the pump must be switched off to protect it from consequential damages.
Please find the pressure permissible for each pump on the data plate on the pump.