Elmo Rietschle C-DLR 301 Quick guide

C
C-Serie
C-Series
Klaue
Claw
Edition: 2.0 ·20/01/2023 ·BA 887-EN
Translation of the original
Operating Instructions
C-DLR 301
Compressor
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 ................................................................... 5
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-DLR301 ................................................... 14
4.2 Product overview C-DLR301 with frequency converter ............................... 15
4.3 Data plate................................................................... 16
4.4 Description.................................................................. 17
4.5 Fields of application........................................................... 17
4.6 Accessories ................................................................. 17
5 Installation ................................................................. 18
5.1 Preparation of installation ...................................................... 18
5.2 Installation .................................................................. 18
5.3 Connection of pipes........................................................... 19
5.4 Check lubricating oil .......................................................... 19
5.5 Connect to the energy supply network ............................................ 19
5.5.1 Connect motor, machine without frequency converter ........................ 20
5.5.2 Connect motor, machine with frequency converter ........................... 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 Decommissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.2.1 Decommissioning of the machine ........................................ 22
6.2.2 Storing the machine ................................................... 22
6.3 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 Cleaning of the compressor..................................................... 24
7.5 Lubricating Oil ............................................................... 25
7.5.1 Check/refill oil level.................................................... 25
7.5.2 Oil change........................................................... 26
7.6 Air filter ..................................................................... 27
7.7 Motor and coupling ........................................................... 28
7.7.1 Motor .............................................................. 28
7.7.2 Coupling / Fan ....................................................... 28
7.8 Safety valve ................................................................. 29
7.9 Frequency converter .......................................................... 29
7.10 Repair / service .............................................................. 29
7.11 Spare parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8 Errors...................................................................... 31
9 Disassembly and disposal..................................................... 33
9.1 Disassembly................................................................. 33
9.2 Disposal .................................................................... 33
10 Technical Data .............................................................. 34

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Foreword
1 Foreword
1.1 Principles
These Operating Instructions:
• Are a part of the following contact-free running claw compressors.
• C-DLR 301
• C-DLR 301 with frequency converter (variants Fxxx)
• Describes the safe and proper use 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 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 887
Declaration of Conformity C 0079
Declaration of no-objection 7.7025.003.17
Connection diagram
(in the cover of the frequency converter) –
Spare parts list Spare parts documents E 887
Data sheet Technical data and characteristic curves D 889
Info sheet Storage guideline for lubricants I 100
Info sheet Storage guideline for machines I 150
Operating Instructions Operating instructions of the frequency convert-
er INVEOR M –
The documents can be ordered from our Service or downloaded using the following link:
• http://www.gd-elmorietschle.com
The operating instructions for the frequency converter is available at the following link:
• https://www.kostal-industrie-elektrik.com
1.4 Directives, standards, laws
See Declaration of Conformity.

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Foreword
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.
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
• Changing 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 Specialist terms and meaning
Term Explanation
Machine Compressor and motor combination ready to be connected
Motor Compressor drive motor
Compressor Machine to produce excess pressure
Frequency converter A frequency converter allows an infinitely variable control of the speed.
Claw 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 ex-
cess pressure in bar (g)
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-DLR Type name of compressor
FC Frequency converter

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Safety
2 Safety
The manufacturer shall not be liable for damages caused by non-observance of the whole documentation.
2.1 General
These Operating Instructions contain basic instructions for installation, commissioning, maintenance and in-
spection works 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 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.
Warns of the 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:
• All non-explosive, non-combustible, non-aggressive and non-poisonous, dry gases and gas-air
mixtures
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 machine is only permitted to be operated within the speed range and frequency range that is speci-
fied on the data plate of the frequency converter
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, 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
• Operation without standard safety valve
• Using the machine in areas with ionising radiation
• Modifications to machine and accessories
• Changes of the basic settings of the frequency converter
• 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. 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 (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. 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
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 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.
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