Elmo Rietschle V Series User manual

V
V Serie
V Series
Drehschieber
Rotary Vane
Edition: 1.2 ·27/09/2023 ·BA 381-EN
Operating Instructions
V-DTN 16 | 26 | 41
Compressor
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 Technical terms and abbreviations ............................................... 5
2 Safety ..................................................................... 6
2.1 General..................................................................... 6
2.2 Indication 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 ..................................................... 9
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............................................ 10
2.12 Emergency Stop / Emergency Off ................................................ 10
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 Lifting and transporting................................................. 12
3.2 Storage..................................................................... 13
3.2.1 Ambient conditions during storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4 Product overview and functioning .............................................. 14
4.1 Product Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Data plate................................................................... 15
4.3 Description.................................................................. 15
4.4 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 Pressure control valve ......................................................... 18
5.5 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 ..................................................... 20
6.1.2 Check the rotation direction ............................................. 20
6.2 Operation ................................................................... 21
6.3 Decommissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.3.1 Decommissioning of the machine ........................................ 21
6.3.2 Storage of the machine ................................................ 21
6.4 Recommissioning............................................................. 21
7 Maintenance and repair....................................................... 22
7.1 Ensure operational safety ...................................................... 22
7.2 Maintenance table ............................................................ 23
7.3 Preparing maintenance works ................................................... 23
7.4 Cleaning of the compressor..................................................... 23
7.5 Air filter ..................................................................... 24
7.6 Blades ..................................................................... 25
7.7 Motor ...................................................................... 26
7.8 Repair / service .............................................................. 26
7.9 Spare parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8 Errors...................................................................... 28
8.1 Table of malfunctions.......................................................... 28
9 Disassembly and disposal..................................................... 30
9.1 Disassembly................................................................. 30
9.2 Disposal .................................................................... 30
10 Technical Data .............................................................. 31

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Foreword
1 Foreword
1.1 Principles
These Operating Instructions:
• Are part of the following dry running rotary vane compressors of type V- DTN 16 | 26 | 41.
• Describe how to use these compressors safely and properly in all life phases and are to be observed by
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 these 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 381
Declaration of Conformity C 0082
Declaration of no-objection 7.7025.003.17
Spare parts list Spare parts documents E 381
Data sheet Technical data and characteristic curves D 381
Info sheet Storage guideline for machines I 150
The documents can be ordered via our Service or downloaded using the following link:
• http://www.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 manufacturing 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 Technical terms and abbreviations
Term Explanation
Machine Compressor and motor combination ready to be connected
Motor Drive motor of the compressor
Compressor Machine to produce excess pressure
Rotary vane Design or operating principle of the machine
Volume flow The volume flow determines how much air or gas volume per time unit is
delivered by a compressor or flows through a pipe, specified in m³/h
Final compression pressure Maximum excess pressure that a compressor can generate, given as
excess pressure in bar
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
V-DTN Type of compressor

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Safety
2 Safety
The manufacturer is not responsible for damages due to non-observance of the overall 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 damages.
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 machine may not be removed, not even if the machine is resold. For all queries about
the product, please always quote the serial number.
The operating company is responsible for observing local regulations.
2.2 Indication 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 potential risk of injury
It warns of electrical voltage
It warns of suspended loads
It 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:
• Conveying of air with a relative humidity of 30 to 90 %
• All non-explosive, non-combustible, non-aggressive and non-poisonous, humid gases and gas-air
mixtures
The machine must only be operated in such areas as described in the operating instructions:
ØOnly operate the machine in technically perfect condition
ØThe machine is only permitted to be operated at ambient temperature and inlet temperature between 5
and 40 °C
Please contact us for temperatures outside this range.
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 explosive, inflammable, aggressive or poisonous media, e.g. dust
as per ATEX zone 20-22, solvents as well as gaseous oxygen and other oxidising agents
• 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
• 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 permitted to stay within the area of the machine and must be kept away from the dan-
ger zone 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.
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 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.

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Safety
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 machine. Furthermore, those people are seen to be unauthorised persons, who
are, because of their physical, cognitive, and health abilities, not able to recognise hazards, caused by this
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
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, out-
put of hot pumped media or cooling air
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

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Safety
• All safety instructions and signs on the machine 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 machine 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.
ØBefore using our services each time, for occupational safety and environmental protection reasons, it is
necessary to indicate and declare hazardous substances on or in the device.
ØSend the declaration of clearance filled in and signed back to Gardner Denver.
If no declaration takes place, we must assume that the device is free from such substances. In case of
doubt, our service department reserves the right to reject the acceptance until the safety has been deter-
mined 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 safety data sheets of the substances used
ØObserve the intended use
ØObserve the maintenance intervals
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.

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Safety
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 Eyebolt
1
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 Lifting and transporting
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 compressor is supplied on a pallet.
a) Unload the compressor using a forklift or pallet truck and transport it to the place of installation.
b) Tighten the eyebolt (Fig. 1/1) firmly.
c) For lifting of the compressor it must be suspended by lifting equipment using the eyebolt.
d) Lift the compressor off the pallet and align it.
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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O
E
B
A
F
D
N
G1
A
F
G
Setup and operation
4 Product overview and functioning
4.1 Product Overview
Fig. 2 V-DTN compressor
AAir intake
BOutlet connection
DPressure control valve
ECooling air inlet
FCooling air outlet
GCover
G1 Inlet grating
NData plate
ORotation direction arrow

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Fig. 3 Data plate (example)
Setup and operation

  

 






 

  



1 Model / size (mechanical version)
2 Serial number
3 Year of construction
4 Data matrix barcode
5 Material number
6 Flow rate 50Hz / 60Hz
7 Motor data 50Hz / 60Hz
8 Speed 50Hz / 60Hz
9 Motor output 50Hz / 60Hz
10 Operating mode
11 Excess pressure 50Hz / 60Hz
9
4 5
11
2
810
1 3 6
7
4.2 Data plate
The following information is encoded as barcode:
• Material number (MA)
• Production order (PR)
• Serial Number (SC)
4.3 Description
The V-DTN machines are one-step, dry running rotary vane compressors. The rotary vanes of the ro-
tor mounted on the motor shaft divide the pump housing into multiple chambers whose volumes change
periodically.
The compressors are equipped with a threaded connection on the outlet side and a silencer on the inlet
side. The intake air is cleaned by an integrated micro fine filter. The carbon dust caused by the scoring of the
blades can also be separated by an integral filter.
The compressor V-DTN is installed in a noise-reducing cover of plastics. A fan provides for the cooling of
the compressor. In manufactured sizes with higher motor output, the compressed air is cooled by a cooling
segment.
The pressure control valve enables the adjustment of the pressure to the required value, however with an
upper limit.

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Setup and operation
4.4 Fields of application
The dry-running rotary vane compressors V-DTN are suitable for the generation of excess pressure. Excess
pressure can be between 0 and the value (bar) stated on the data plate. Continuous operation is permissible.
The compressors are suitable for conveying air with a relative humidity of 30 to 90%.
The compressors have a nominal flow rate of 15m³/h (DTN 16), 25m³/h (DTN 26) and 40 m3/h (DTN40) at
50 Hz. The load limits (bar) on the outlet side are stated on the data plate. Data sheet D381 shows the de-
pendency of the flow rate on the excess pressures.
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 (data plate).
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
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
• Good ventilation in the installation room
• Cover (Fig. 2/G) and inlet grating (Fig. 2/G1) must be readily accessible.
5.2 Installation
CAUTION Burns due to hot exhaust gases!
If the pressure control valve responds, compressed air can get out at a tempera-
ture of >70 °C!
ØPlace the machine in a way that hazards due to hot exhaust gases are
avoided.
ØInstall safeguards, if necessary, or define protective distances.
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: 10 ° 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 bearing surface must be at least the same size as the machine.
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 10 cm away
from the adjacent walls. Cooling air coming out must not be sucked in again.
ØFor maintenance works, provide for a space of at least 30cm around the
machine.
a) Align the machine in the place of installation and, if necessary, bolt to the ground.
b) If available, check optional accessories for the correct mounting and correct electrical connection.
An output reduction is noticeable when installed at more than 1000m above sea level. In this case,
please contact us.

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Installation
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
NOTICE Property damage due to high forces or torques!
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.
NOTICE Property damage due to reverse running!
Running in the reverse direction can damage the compressor.
ØFor connection pipes (with the same pipe cross section as the machine
connection) and more than 3 m length, it is reasonable to install a non-return
valve (accessories¦ ZRK) in order to avoid reverse running after the machine
has been stopped.
NOTICE Property damage in case of parallel operation!
If parallel operation of multiple compressors is used, a switched off compressor
can be damaged by the flow rate of the operating compressors.
ØFor parallel operation, an external non-return valve must be installed in the
outlet line downstream of each compressor.
a) Remove the blind plug on the outlet connection (Fig. 2/B).
b) Connect the pipe with the outlet connection (Fig. 2/ B).
If the inlet line is too narrow and/or too long, the flow rate of the compressor will be reduced.
5.4 Pressure control valve
As standard, the compressors are equipped with a pressure control valve.
The required pressure ranges can be adjusted using the pressure control valve (Fig. 2/D) in accordance with
the symbol plate affixed to the rotary knob.
NOTICE Property damage!
If the permissible final compression pressure (see data plate) is exceeded, this
can damage the compressor.
ØOperation without the standard control valve does not comply with the intend-
ed use.

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Installation
5.5 Connection of motor
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 must be installed by the operating company.
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.
Please find the electrical data of the motor on the data plate (Fig. 2/N) or the motor data plate. 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 in the terminal box of the motor.
Machines with AC motors that have an apparent power greater than 1.7 kVA or three-phase motors with an
apparent power greater than 5.2 kVA, or motors with starting currents greater than 60 A are not designed for
direct grid start.
High starting torques occur when the motor is started. The mechanical load must be reduced.
This can be achieved, for example, by starting the motor with a star-delta starter, soft starter or frequency
converter.
Permissible tolerances:
• -25 % /+10 % voltage deviation referred to the 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) Directly connect the motor in the terminal box or use the optional connector (accessories).
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
WARNING Risk of injury due to improper operation!
Improper operation of the machine can cause serious or fatal injuries.
ØOnly use the machine in accordance with the intended use. See chapter2.4.
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!
ØWait until it stands still. The machine is only allowed to be switched on again
after it stands still.
6.1 Start-up
6.1.1 Installation check
WARNING Risk of injury!
A faulty installation as well as missing or non-functional safety equipment may
lead to severe injury.
ØPut the machine into operation only after it has been ensured that the instal-
lation has been carried out flawlessly and the requirements for installation,
assembly and electrical installation have been observed.
The following checks must be carried out:
• No damages to the compressor and the accessories attached due to transport or assembly
• Compressor stands safely on the floor in a horizontal installation position
• Correct connection of the pipelines (inlet side, outlet side), check for leak tightness!
• Tight fit of the screw and flange connections
• Electrical installation complies with the specifications (connection diagram)
• The installation room is equipped with an adequate ventilation system
• Compressor and pipelines cleaned
• Check the function of optional accessories (if present)
6.1.2 Check the rotation direction
NOTICE Property damage due to wrong direction of rotation!
Running the machine in reverse direction for a long time may cause damage to
the blades and cause breaking of blades.
ØUse a phase sequence indicator to check the direction of rotation
(anti-clockwise).
The intended direction of rotation of the drive shaft is indicated by the rotation direction arrow (Fig. 2/O).
a) Start the motor briefly (max. two seconds) to check the direction of rotation. If looking at the motor fan, it
must rotate clockwisely.
CAUTION! During this starting up, the outlet line must not be connected.
b) After a possible correction of the direction of rotation, restart the motor.