Deublin 7100 Series User manual

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Number: GB
Version:
Rev. Page 1 of 14 ©DEUBLIN
Rotating Unions
Series
7100
OPERATING MANUAL

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Number: GB
Version:
Rev. Page 2 of 14 ©DEUBLIN
Content
1 For your Safety _________________________________________________________3
1.1 Intended Use ___________________________________________________________ 3
1.1.1 Example of Application ____________________________________________________ 4
1.2 Misuse ________________________________________________________________ 4
1.3 Safety Instructions _______________________________________________________ 5
1.3.1 Hazards due to hot surfaces________________________________________________ 5
1.3.2 Hazards by improper hoses ________________________________________________ 5
1.3.3 Hazards due to the media__________________________________________________ 5
1.3.4 Hazards by faulty installation _______________________________________________ 5
1.4 Structure of Pictograms ___________________________________________________ 6
2 Information as to this Manual_______________________________________________6
3 Information on the Name Plate _____________________________________________6
4 Information on the Design _________________________________________________7
4.1 Filtering of the Medium ____________________________________________________ 7
4.2 Connecting Options of the Rotating Union at the Machine Shaft ____________________ 7
4.3 Fit, Shape and Positional Tolerances _________________________________________ 7
4.4 Prepare Installation of the Rotating Union _____________________________________ 7
4.5 Options of Hose Installation ________________________________________________ 8
4.5.1 Connection of hose to the rotating union ______________________________________ 8
4.5.2 Connection of a drain line __________________________________________________ 9
5 Installation _____________________________________________________________9
6 Information on the Operation _______________________________________________9
7 Storage ______________________________________________________________10
8 Maintenance __________________________________________________________10
8.1 Maintenance Intervals____________________________________________________ 10
8.2 Daily Inspection ________________________________________________________ 10
9 Trouble Shooting _______________________________________________________ 11
9.1 Potential Causes for Errors and their Elimination ________________________________11
9.2 Pack Rotating Union for Transport __________________________________________ 12
10 Disposal ______________________________________________________________ 12
10.1 Dispose of Packaging ____________________________________________________ 12
10.2 Dispose of Rotating Union ________________________________________________ 12
11 Spare Parts ___________________________________________________________ 13

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Number: GB
Version:
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1 For your Safety
This chapter provides information on the safe handling of Deublin rotating unions.
QFor your own safety and the safety of other people read this operating manual carefully and
completely prior to working on or with Deublin rotating unions.
QThis operating manual exclusively describes the rotating unions of the manufacturer Deublin. In
the further description/explanation the name “Deublin” is left out for a better readability.
QAlways use the latest version of the operating manual, available under www.deublin.eu.
QThis operating manual is a material part of the specified rotating unions. The operator is respon-
sible for the personnel to take note of this manual.
QThe operator of the rotating unions shall not make any modifications or attachments to and ret-
rofitting of the rotating union without the manufacturer’s consent.
QPlease follow the additional instruction “Installation” for a secure and correct installation of the
rotating union. The installation instruction is included with the delivered union.
1.1 Intended Use
The rotating unions of series 7100 supply the feeding of hydraulic oil. The respective medium has to
comply with the following specification: Mineral oils according to DIN 51524-2 (HL; HLP) | ISO 6743-
4 HM, viscosity classes 10, 22, 32, 46, 68 and 100 cSt.
The admissible performance of the rotating unions depends upon the diameter of the pipe through
which the consuming equipment is provided with hydraulic oil.
Max. pressure Min. pressure Max. speed Temperature range
300 bar
(2,900 PSI) 3 bar (40 PSI) 8,000 min-1 statically: -40 up to 90 °C
dynamically: -10 up to 70 °C
Details on the operating range of the rotating unions are provided in the catalogue and/or the model-
specific installation drawing.
The rotating unions referred to are designed for non-potentially explosive environments and non-com-
bustible media.
The rotating unions of the serie 7100 can be used as one-way or multi-passage version depending on
the type of connection.

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1.1.1 Example of Application
In this example, the principle of the rotating union is described on the basis of a two-way version with
flanged rotor. Other models of series 7100 operate in the same way.
Fig. 1: Schematic diagram two-way version
A rotating union is installed at one end of the shaft, e.g. a two-way version as in this example. The latter
is fitted with two pipes (A) through which the consuming equipment is supplied with hydraulic oil. The
medium leaking from the rotating union is carried off through a leakage line (B) in a controlled way.
1.2 Misuse
This chapter provides information on known misuse of rotating unions of the 7100 series.
The rotating unions are not suitable for the areas and applications described herein. Use in such areas
or for such applications constitutes a misuse endangering people and machines and is therefore pro-
hibited.
Prohibition for the following areas:
QPotentially explosive areas
The rotating unions of the 7100 series shall not be used in potentially explosive areas, as they
are not approved for the requirements in potentially explosive areas. Operation in such areas
may cause explosions.
QFood
Food, cleaning and disinfectant residues cannot be removed from the rotating unions. People
may suffer poisoning.
Prohibition for the following applications:
QConveying of combustible media or hydrocarbons
Combustible media or hydrocarbons may ignite or cause explosions.
QConnection to a piping system with excessive pressure
If excessive pressure is applied to the rotating unions, supply pipes can come off and cause
personal injury or property damage.
QOperation without lubrication
Dry operation (without medium) of the rotating union causes damage to the axial face seals.
QConnection to fixed pipes
If connection is via fixed pipes, the rotating unions may leak and the ball bearings may get dam-
aged.
QConveying of media which are too hot
If the media exceed the maximum admissible temperature for the rotating union, the static seals
(elastomeric seals) can be damaged which may result in leaky rotating unions and personal in-
jury or property damage.
This list is not comprehensive and will be updated with results from product observation.
B
A

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1.3 Safety Instructions
This chapter provides information on the hazards through rotating unions.
1.3.1 Hazards due to hot surfaces
The rotating unions are heated by the temperature of the medium. Skin contact with heated rotating
unions can cause injuries.
QUse safety gloves and PPE (Personal Protective Equipment) protecting against heat when han-
dling the rotating union.
QAttach a clearly visible danger sign visibly on/next to the rotating union in order to warn of dan-
ger.
1.3.2 Hazards by improper hoses
For the connection of the rotating union to the machine, you have to choose appropriate hoses for the
respective medium, which meet, the specifications for the application.
If you use incorrect hoses, they may become porous or burst. This can cause personal injury and/or
property damage to components of the machine.
QIn case of the medium hydraulic oil, use hoses which are suitable for the maximum system pres-
sure of the machine and the maximum temperature of the media.
Hoses for leakage lines
If the cross-section of the hose used is smaller than that of the connection of the rotating union, an ex-
cessive pressure may develop in the hoses. Hoses may burst and cause serious injuries.
QUse hoses which fit the cross-section of the connections.
1.3.3 Hazards due to the media
When working on the rotating union, injuries can be caused by skin or eye contact with the media.
QObserve the safety instructions for the flow media. Observe the COSHH Safety Data Sheet for
the flow media.
1.3.4 Hazards by faulty installation
If the rotating unions are installed incorrectly, hoses and connections may become leaky. The medium
can escape. Depending on the medium, personal injury or property damage to the components of the
machine may occur.
QBefore installing the rotating union ensure that no feed pressure and no residual pressure is ap-
plied to the pipeline system of the machine.
QInstall the rotating union on the machine using hoses only, in order to avoid stress on the rotat-
ing union.
QInstall the hoses free from stress.
QInstall the hoses to the rotating union prior to mounting it at the machine shaft.

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1.4 Structure of Pictograms
This chapter provides information on the meaning of the pictograms used in the manual.
Warning
Potentially dangerous situation, which may result in death or serious injury.
Note
Potentially harmful situation in which the product or surrounding objects can be dam-
aged.
Application notes
and other useful information.
2 Information as to this Manual
The copyright as to this manual remains with Deublin. Subject to changes!
QYou can download the latest version of this manual under www.deublin.eu.
QAlways use the latest version of the operating manual.
3 Information on the Name Plate
Model number
DEUBLIN‘s internal identification / date of manufacture
MADE IN <<country of manufacture>>
Fig. 2: Name plate
The coding of the model number is described in the catalogue. The model number corresponds to the
order number.
Warning
Note
Info

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4 Information on the Design
This chapter provides information as to which items have to be observed in the design in order to have
a positive effect on the service life of the rotating union.
You can obtain the drawings of the rotating unions from Deublin in order to integrate the
rotating union in your drawing.
4.1 Filtering of the Medium
Unfiltered media with a particle size of more than 60 µm result in increased wear of the rotating union.
The larger the particles in the media, the higher the wear of the rotating union is.
QInstall a filter upstream of the rotating union which filters the medium according to purity class
17/15/12 ISO 4406:2017.
4.2 Connecting Options of the Rotating Union at the Machine Shaft
Fig. 3: Options for the installation on the machine shaft
The rotating unions can be fastened on the machine shaft by a threaded rotor (A) or by means of a
flanged rotor (B) depending on the rotating union.
4.3 Fit, Shape and Positional Tolerances
Functioning of the rotating unions is only ensured if you observe the specifications of Deublin regarding
design of fits, shape and positional tolerances. If you do not meet them, O-rings can be damaged, the
medium can escape, for instance. Corresponding information can be found in the technical drawing of
your rotating union.
QMake sure that all specifications by Deublin on the installation of the rotating union in your ma-
chine are observed.
4.4 Prepare Installation of the Rotating Union
Sharp edges at the bore hole of the roller can damage the O-rings of the rotating union.
QProvide the bore hole of the roller with a chamfer of 30° in order to prevent the O-rings from be-
ing damaged when pressing them in.
QRound sharp edges off by polishing the junctions between shafts and rotating unions.
Info
Info
BA

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4.5 Options of Hose Installation
The following examples show how to install the hoses at the rotating unions.
These connecting options ensure that the hoses do not transfer stress to the rotating unions when the
machine shaft moves.
QPlease pay attention to the chapter “1.3 Security Advices” regarding the design.
4.5.1 Connection of hose to the rotating union
The hoses must be installed without stress and bends so that they do not apply any forces to the rotating
union. The following figures show examples of installation.
Fig. 4: Connect hoses with 90° elbows
Fig. 5: Connect hoses with straight connections

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4.5.2 Connection of a drain line
Damage of component due to overpressurised drain line
If the rotating union is connected to pressurised drain lines, the leaking medium cannot
be carried off. If the media cannot escape through the drain line, the union will be dam-
aged.
QConnect the hoses to drain lines which are not pressurised.
During operation hydraulic oil leaks from the rotating union. In
order to carry this off in a controlled way, the rotating union is
to be fitted with one or several drain connections depending
on the model.
QThe leaking medium has to be conveyed pressureless back
to the tank. The pressure in the drain line must not exceed
0.5 bar.
Fig. 6: Connection of drain line
5 Installation
The union installation is described in an additional leaflet which is supplied with each rotating union.
Please follow the additional instruction “Installation” for a secure and correct installation of the rotating
union. The instruction “Installation” is available online via www.deublin.eu.
QEnsure that the person installing the rotating union receives the following information:
- Position and location of the rotating union in the machine
- Plan for connection of hoses
- Position of leakage line
- Information on the media
6 Information on the Operation
Damage to components due to no lubrication (Dry run)
The hydrostatic seal of the rotating unions is lubricated by the medium. If the rotating
unions are operated without medium present they are not lubricated and will thus be
damaged.
QEnsure that the rotating unions are operated with a medium.
QSwitch off the plant/machine, if the rotating unions are operated without medium.
Damage of component due to insufficient pressure
If insufficient pressure is applied to the rotating union, the rotor and the housing are
subject to excessive wear.
QMake sure that the rotating unions are provided with the specified minimum pressure.
Note
Note
Note

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7 Storage
Damage of component due to incorrect storage
If you store the rotating unions incorrectly, they become leaky or get damaged.
QStore the rotating unions in a dry area between 3 °C and 40 °C.
QStore rotating unions for two years at the most.
8 Maintenance
This chapter provides information on how to extend the service life of the rotating unions by means of
maintenance.
8.1 Maintenance Intervals
You can avoid early wear of the rotating unions, if you adhere to the maintenance intervals described
herein.
Risk of injury due to hot or cold surfaces
The rotating unions are heated or cooled by the temperature of the medium.
Skin contact with these heated or cooled rotating unions can cause severe injuries.
QBefore starting to work on the rotating union, allow the machine to cool down.
QUse safety gloves and PPE (Personal Protective Equipment) protecting against heat
or cold depending on the application of the rotating unions.
8.2 Daily Inspection
Check the rotating unions for tightness.
Risk of injuries due to applied line pressure
If you have to work on the rotating union and feed pressure of the medium is applied or
there is residual pressure in the piping system of the machine, the medium can escape
under pressure when releasing the connections. You and other people may suffer se-
vere injuries.
QEnsure that no feed pressure is applied.
QEnsure that there is no residual pressure in the piping system.
During operation of the machine, leakages may occur at the
connections and hoses depending on the requirements to the
rotating unions.
QCarry out daily visual inspections in order to check wheth-
er leakages occurred at the connections (see arrows).
If you detect leakage:
1. Stop the machine.
2. Replace the defective hoses with new ones.
3. Seal leaking connections.
4. If the rotating union is worn and leaks, replace it with a new
one. Repair kits for various models can be obtained from
Deublin.
Note
Warning
Warning
Fig. 7: Inspect visually

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9 Trouble Shooting
This chapter provides the following information:
1. Which problem may occur?
2. What can be the cause of the problem?
3. How can you eliminate this problem?
9.1 Potential Causes for Errors and their Elimination
Risk of injuries due to applied line pressure
If you have to work on the rotating union and feed pressure of the medium is applied or
there is residual pressure in the piping system of the machine, the medium can escape
under pressure when releasing the connections. You and other people may suffer seri-
ous injuries.
QEnsure that no feed pressure is applied.
QEnsure that there is no residual pressure in the piping system.
Error Potential causes Elimination
Rotating union is
leaky after installation
Incorrect installation 1. Stop the machine.
2. Ensure that the connections are sealed ac-
cording to the manual “Installation”.
3. Ensure that all hoses are installed without
stress.
4. Ensure that all seal faces are clean.
Seal faces of the rotating
union are damaged
1. Pack rotating union.
2. Send rotating union to Deublin for overhaul/
service.
Rotating union is defec-
tive
Rotating union leaks
before the end of the
expected service life
Medium is contaminated 1. Stop the machine.
2. Drain medium.
3. Send rotating union to Deublin for overhaul/
service, if required.
4. Mount new filter.
5. Flush the piping system of the machine.
6. Refill with new medium.
Rotating union is not de-
signed for the respective
application
1. EnsurethatthecorrectDeublinRotatingUnion
is used.
2. Contact Deublin if required.
Rotating union runs
untrue or wobbles
Thread and/or concen-
tricity outside the admis-
sible tolerance.
1. Stop the machine.
2. Remove rotating union.
3. Manufacture new thread or flange.
4. Install rotating union.
Rotating union is mount-
ed incorrectly.
Warning

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9.2 Pack Rotating Union for Transport
The rotating union has to be protected against mechanical impact and humidity during transport to en-
sure that the rotating union will arrive at Deublin without being damaged.
Risk of injury by high weight
The rotating unions are heavy (depending on the model > 25 kg). If you lift the rotating
unions on your own or without a lifting device, you and other people may suffer injuries.
QAlways mount the rotating union with appropriate assistance.
QUse a crane or lifting device for transport and installation of the rotating union.
1. Dismount the rotating union in reverse order of the installation (see Installation).
2. Ensure that the rotating union is free from the respective media.
3. Use a cardboard box which is suitable for the weight of the rotating union.
4. Cushion the base of the cardboard box with a soft material, e.g. air bubble film.
5. Wrap the rotating union with a soft material, e.g. air bubble film.
6. Ensure that no packing material or dirt can penetrate the opening of the rotating union.
7. Position the rotating union in the middle of the cardboard box.
8. Fill the free space around the rotating union with newspaper or another suitable material.
9. Close the cardboard box by means of tape.
10 Disposal
Risk of injury by high weight
The rotating unions are heavy (depending on the model > 25 kg). If you lift the rotating
unions on your own or without a lifting device, you and other people may suffer injuries.
QAlways mount the rotating union with appropriate assistance.
QUse a crane or lifting device for transport and installation of the rotating union.
10.1 Dispose of Packaging
QDispose of the packaging (cardboard box and plastics) according to the national standards,
regulations and directives.
10.2 Dispose of Rotating Union
Mainly, the rotating unions consist of metals, which can be reused within the reclamation of scrap. De-
contaminate unions / parts and dispose of in an “Environmentally Friendly” way.
QDismount the rotating union in reverse order to the installation (see Installation).
QFlush the rotating union.
QCollect the dirty flushing media.
QDispose of the collected flushing media according to the national standards, regulations and
directives.
QComply with the specification of the hydraulic oil manufacturer.
QDispose of the rotating union according to the national standards, regulations and directives.
In case of repair, Deublin disposes of all used parts.
Warning
Warning

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11 Spare Parts
The rotating unions have a limited service life and include wearing parts. Wearing parts are excluded
from the warranty. All static and dynamic sealing elements of a component are considered wearing
parts, as well as ball bearings.
Repair kits are available for some models of the rotating unions and can be obtained from Deublin.
Please ask your Deublin Service.
You need special tools and repair instructions for repair of the rotating unions which can be obtained
from Deublin as well.
Note
If you do not want to repair your rotating union on your own, Deublin will be pleased to
help you. If requested, Deublin will exchange all wearing parts and clean all components
of the rotating union. Before repaired rotating unions leave the premises, they will be
subjected to an operational check. The repaired rotating union is returned with a stand-
ard “Deublin Warranty” valid for 12 months.
Info

©2021 Deublin GmbH | Florenz-Allee 1 | 55129 Mainz | Alle Rechte vorbehalten.
Reliability
Many years’ experience, ongoing liaison with customers, innovations sourced
inhouse and from suppliers place Deublin in a position providing
reliable Rotating Unions at the highest level.
When it comes to concrete applications, maximum service life is guaranteed
by matching the sealing to the respective medium.
The service life is also equally maximized by maintaining cleanliness when
storing and handling the Rotating Union and by adhering to the guidelines issued
by Deublin in respect of the conditions on the customer’s premises.
EUROPE
DEUBLIN Germany
Florenz-Allee 1
55129 Mainz, Germany
Phone: [phone]
E-Mail: [e-mail]
DEUBLIN Italy
Via Guido Rossa 9 - Loc. Monteveglio
40053 Comune di Valsamoggia (BO), Italy
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
DEUBLIN Austria
Lainzer Straße 35
1130 Wien, Austria
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
DEUBLIN France
61 Bis, Avenue de l‘Europe
Z.A.C de la Malnoue
77184 Emerainville, France
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
DEUBLIN Poland
ul. Bierutowska 57-59
51-317 Wrocław, Poland
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
DEUBLIN Spain
C/ Lola Anglada, 20
08228 Les Fonts (Terrassa), Spain
Phone: [phone]
E-Mail: [e-mail]
DEUBLIN United Kingdom
6 Sopwith Park, Royce Close, West Portway
Andover SP10 3TS, UK
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]o.uk
AMERICA
DEUBLIN USA
2050 Norman Drive
Waukegan, IL 60085-6747 U.S.A
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
DEUBLIN Brazil
Rua Fagundes de Oliveira, 538 - Galpão A11
Piraporinha
09950-300 – Diadema - SP - Brasil
Phone: [phone]
Fax: [phone]
E-Mail:
[email protected].com.br
DEUBLIN Mexico
Norte 79-A No. 77, Col. Claveria
02080 Mexico, D.F.
Phone: [phone]
Fax: [phone]
E-Mail: deublinmexicoc[email protected]
ASIA
DEUBLIN China
No. 2, 6th DD Street,
DD Port Dalian, 116620, China
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Shanghai Branch Office
Room 15A07, Wangjiao Plaza
No. 175 East Yan’an Road, Huangpu District
Shanghai 200002
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
DEUBLIN Asia Pacific
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#17-02 Singapore 308900
Phone: [phone]
Fax: [phone]
E-Mail: [e-mail]
DEUBLIN Japan
2-13-1, Minamihanayashiki, Kawanishi City
Hyogo 666-0026, Japan
Phone: [phone]
Fax: [phone]
E-Mail: customerservic[email protected]
2-4-10-3F, Ryogoku, Sumida-ku
Tokyo 130-0026, Japan
Phone: [phone]
Fax: [phone]
E-Mail: customerservic[email protected]
1-9-2-4F, Mikawaanjo-cho, Anjo City
Aichi 446-0056, Japan
Phone: [phone]
Fax: [phone]
E-Mail: customerservic[email protected]
DEUBLIN Korea
Star Tower #1003, Sangdaewon-dong 223-
25, Jungwon-gu, Seongnam-si, Gyeonggi-do,
South Korea
Phone: [phone]
Fax: [phone]
E-Mail: customerservic[email protected]