Elmo Rietschle C Series User manual

C
C-Serie
C-Series
Klaue
Claw
Edition: 1.2 ·11.04.2021 ·BA 885-EN
Operating Instructions
C-VLR 301
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 Product overview C-VLR301.................................................... 14
4.2 Data plate................................................................... 15
4.3 Description.................................................................. 15
4.4 Fields of application........................................................... 16
4.5 Accessories ................................................................. 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 .......................................................... 18
5.5 Connect to the energy supply network ............................................ 19
5.5.1 Connection of motor................................................... 19

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Table of contents
6 Commissioning and decommissioning .......................................... 20
6.1 Start-up .................................................................... 20
6.1.1 Installation check ..................................................... 21
6.1.2 Check the rotation direction ............................................. 21
6.2 Operation ................................................................... 21
6.2.1 Discharge condensate ................................................. 21
6.3 Decommissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.3.1 Decommissioning of the machine ........................................ 22
6.3.2 Storing the machine ................................................... 22
6.4 Recommissioning............................................................. 22
7 Maintenance and repair....................................................... 23
7.1 Ensure operational safety....................................................... 23
7.2 Maintenance table ............................................................ 24
7.3 Preparing maintenance works ................................................... 24
7.4 Clean vacuum pump .......................................................... 24
7.5 Lubricating Oil ............................................................... 25
7.5.1 Check/refill oil level.................................................... 26
7.5.2 Oil change........................................................... 26
7.6 Air filter ..................................................................... 26
7.6.1 Mesh filter ........................................................... 26
7.6.2 Intake filter (accessories) ............................................... 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.................................................................. 29
8 Errors...................................................................... 30
9 Disassembly and disposal..................................................... 31
9.1 Disassembly................................................................. 31
9.2 Disposal .................................................................... 31
10 Technical Data .............................................................. 32

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Foreword
1 Foreword
1.1 Principles
These Operating Instructions:
• Are a part of the following contact-free, running claw vacuum pump C-VLR301.
• Describe how to use these pumps safely and properly in all life phases and are true for 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 885
Declaration of Conformity C 0080
Declaration of no-objection 7.7025.003.17
Spare parts list Spare parts documents E 885
Data sheet Technical data and characteristic curves D 890
Info sheet Storage guideline for lubricants I 100
Info sheet Storage guideline for machines I 150
Manufacturer’s declaration EU Directive 2011/65/EU (RoHS II) —
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 not 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
CD Pump in standard design
XD Pump with corrosion-protective coating

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Safety
2 Safety
The manufacturer is not responsible for damage 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:
• Symbols for connections
• Data plate and motor data plate
• Information signs and warning plates
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
serious injuries if not avoided.
CAUTION …warns of a hazardous situation, which can cause slight or medium per-
sonal 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.
Warns of potential risk of injury
Warns of electrical voltage
Warns of suspended loads
Warns of hot surface
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
Disconnect the plant and secure it against unexpected restart
Information, note
Protection of environment

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Safety
2.4 Intended use
The machine is suitable for conveying the following media:
• Standard model:
All non-explosive, non-combustible, non-aggressive, and non-poisonous, dry gases, and gas-air
mixtures
• XD model:
All non-explosive, non-combustible, non-aggressive and non-poisonous, damp gases, and gas-air
mixtures
The machine must only be operated in such areas as are described in the operating instructions:
• Only operate the machine in technically perfect condition
• The 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
• The permissible back pressure may not be exceeded
Maximum permissible back pressure: + 50mbar
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 or poisonous media, e.g.
dust as per ATEX zone 20-22, solvents as well as gaseous oxygen and other oxidation agents, water
vapour, water vapour (does not apply to the XD model), 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
• Operation without cover sheet
• Using the machine in areas with ionising radiation
• Back pressures on the outlet side: > +50mbar
• Modifications to machine and accessories
• 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 of legal age. Unauthor-
ised persons are not allowed to stay within the operating area and must be prevented from entering operat-
ing 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 (e.g. locksmith, mechanics)
• 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 vacuum
pump.
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:
• 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 vacuum pump does not have its own Emergency Stop or Emergency Off. This must be implemented
by the user by, e.g. the integration of the pump in the user’s safety plan.
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
1Eyebolt
2Transportation lashing
3 12
3Fixing screw
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) Tightly fasten the eyebolt (Fig. 1/1) and the fixing screw (Fig. 1/3) on the transportation lashing (Fig. 1/2).
c) To lift and transport the machine, hook it in the eye bolt and the transportation lashing using a hoisting gear.
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: -20°C to +70°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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Product overview and functioning
E
E
N
F
Q
N H
P
A
F
B
F
F
P1
O M
K I
B1
D
B2
4 Product overview and functioning
4.1 Product overview C-VLR301
A Vacuum connection
BExhaust air connection
B1Exhaust silencer
B2 Condensate drain (only „XD“ model)
DInlet flange
ECooling air inlet
F Cooling air outlet
H Oil filling point
I Oil sight glass
K Oil discharge point with magnet
MOil recommendation plate
NData plate
ODirection of rotation arrow
P Drive motor
P1Motor data plate
Q Hot surfaces > 70 °C
Fig. 2 Vacuum pump C-VLR 301

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 











1 Model / size (mechanical version)
2 Serial number
3 Year of construction
4 Data matrix barcode
5 Article No.
6 Speed
7 Motor output
8 Operating mode
9 Suction capacity
10 Final pressure (abs.)
7
4 5
10
2
689
1 3
Fig. 3 Data plate (example)
Product overview and functioning
4.2 Data plate
The following information is encoded as barcode:
• Material number (MA)
• Production order (PR)
• Serial Number (SC)
4.3 Description
The C-VLR301 model is a double-shaft, rotary piston vacuum pump, in which the claws roll against each
other without contacting each other and dry. The counter-rotating claw rotors are synchronised by a gear
pair in the gearbox. The gears of the synchronized gearbox and the bearings are lubricated with oil. These
components are in a gearbox that also contains the oil supply. Oil conveying devices always ensure that the
bearings and the gears are sufficiently supplied with oil at all permissible speeds. The gearbox and the com-
pression chamber are separated from each other by special seals. The gearbox is sealed from the outside
with piston sealing rings and O-rings, the compressor chamber with piston rings.
The C-VLR 301 has a connection flange on the inlet side and an exhaust silencer on the pressure side
(Fig. 2/B1). The intake air is cleaned by a mesh filter. An integral non-return valve prevents the evacuated
system from being ventilated after the pump has stopped. A vacuum relief valve is incorporated into the
machine.
The C-VLR301 is enclosed in an insulation hood. In order to dissipate compression heat, 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.

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Product overview and functioning
4.4 Fields of application
This contact-free running claw vacuum pump, C-VLR 301, can be operated in continuous operation at any
pressure between 700 mbar (abs.) and an inlet pressure of 150mbar (abs.).
When evacuating closed systems the volume to be evacuated must be no more than 2% of the nominal
pumping capacity of the vacuum pump.
The pumping capacity with unrestricted suction is 290m3/h at 50Hz. Data sheet D890 shows the depend-
ency of the pumping capacity on the intake pressure.
Design „XD“: The vacuum pump is equipped with a corrosion-protective coating and is suitable for convey-
ing 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.
If it is installed in the open air the unit must be protected from environmental influences (e.g. by a
protective roof).
4.5 Accessories
The following accessories are options and on request available from Gardner Denver.

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Installation
5 Installation
We urgently recommend having the installation carried out by qualified specialist personnel. Gardner Denver
does not accept liability for damages caused by improper carrying out of installation.
5.1 Preparation of installation
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 point (Fig. 2/H), oil sight glasses (Fig. 2/I) and oil drain (Fig. 2/K) must easily be accessible.
• 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”).
ØIf a non-return valve is integrated in the pump, it may not be removed.
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.
NOTICE Property damage due to polluted inlet air!
Pollutions in the inlet air can damage the machine.
ØTo protect the machine the operator should install appropriate filters on the
suction side.
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.

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MAX
MIN
Fig. 4 Oil level in the sight glass
Installation
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
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.
The vacuum connection is located on the suction flange.
a) Remove the blind plug/adhesive film on the vacuum connection (Fig. 2/A) and exhaust air outlet
(Fig. 2/B).
b) Connect the pipes with the vacuum connection (Fig. 2/A).
c) The exhausted air can be blown out through the exhaust air outlet (Fig. 2/B) on the exhaust silencer
(Fig. 2/B1) or led 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
a) Check the lubricating oil level through the oil
sight glass (Fig. 2/I) and top up, if necessary.
b) Fill the lubricating oil for the gear wheels and
bearings at the oil filling point (Fig. 2/H) up to the
middle of the sight glass (Fig. 2/I).
Oil change and suitable types: see
chapter7.5.2 “Oil change” on page 26
c) Reclose the oil filling points.

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Installation
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.
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 at the installation location must comply with the details on the
motor data plate.
ØPermissible tolerances:
• ± 5 % voltage deviation
• ± 2 % frequency deviation
5.5.1 Connection of motor
Please find the electrical motor data on the data plate (Fig. 2/N) or the motor data plate (Fig. 2/P1). The mo-
tors comply with DIN EN 60034 and are designed in protection class IP 55 and insulation class F. The appro-
priate connection diagram is located in the terminal box of the motor (not existing for the version with plug
connection).
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 motor protection switch.
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.

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Commissioning and decommissioning
6 Commissioning and decommissioning
6.1 Start-up
WARNING Risk of injury due to improper operation!
Improper operation of the machine can cause serious or fatal injuries.
ØStrictly observe the safety instructions. Especially observe the safety instruc-
tions in chapter2 .
CAUTION Risk of burns on hot surfaces!
When the machine is at operating temperature the surface temperatures on the
components may rise to above 70 °C. This can cause serious burns.
ØDo not touch hot surfaces (indicated by warning signs).
ØWear suitable protective gloves, if necessary.
CAUTION Risk of injury due to drawing in and trapping!
Due to the high suction capacity possibly parts of the body are drawn in the inlet
connection and injured.
ØDo not put your hands onto the inlet connection to check the suction.
ØBy barriers or keeping sufficient distance make sure that parts of the body
can be drawn into the inlet connection.
CAUTION Risk of injury due to noise emission!
High sound pressure level can permanently damage hearing.
ØObserve measured sound pressure level, see chapter10.
ØWhen spending a long time in the vicinity of the running machine use ear pro-
tection to avoid permanent damage to hearing.
NOTICE Property damage!
Restarting of the machine if the machine has not stopped completely, can dam-
age the machine.
ØThe machine is only allowed to be switched on again after it stands still.