EagleBurgmann eMG Series User manual

EagleBurgmann Germany GmbH & Co. KG
Äussere Sauerlacher Straße 6-10 . D-82515 . Wolfratshausen . Tel.: [phone] . Fax: [phone]
[email protected] . www.eagleburgmann.com
OPERATING MANUAL
EagleBurgmann Mechanical Seal (M.S.)
Type eMG and versions
Applies to all mechanical seals of the same series
These instructions are intended for the assembly, operating and supervising
personnel and should be kept at hand on site.
PLEASE READ this manual carefully and OBSERVE the information contained as to:
Safety Transport / Storage Information about the product
Installation Operation Servicing
If there are any unclear points please contact EagleBurgmann by all means!

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Table of Contents
Keywords and Symbols.......................................................................................................3
GENERAL SAFETY NOTES...............................................................................................4
Instructions for worker's protection......................................................................................5
Notes on explosion protection .............................................................................................5
TRANSPORT / STORAGE..................................................................................................6
Transport.............................................................................................................................6
Storage, "mothballing" (long term storage)..........................................................................7
INFORMATION ABOUT THE PRODUCT...........................................................................9
Manufacturer and country of origin......................................................................................9
Type series..........................................................................................................................9
Versions...............................................................................................................................9
Materials............................................................................................................................10
Designated use..................................................................................................................10
Operating limits..................................................................................................................11
Operating conditions..........................................................................................................12
Drawings............................................................................................................................12
Description.........................................................................................................................12
Seat Versions....................................................................................................................13
Required space, connecting dimensions...........................................................................13
Supply of M.S....................................................................................................................13
Emissions..........................................................................................................................14
INSTALLATION ................................................................................................................15
Assembly utilities...............................................................................................................15
Preparation for assembly...................................................................................................15
Assembly / installation.......................................................................................................17
Supply connections ...........................................................................................................21
OPERATION.....................................................................................................................22
Safe operation...................................................................................................................22
Start-up..............................................................................................................................22
SERVICING.......................................................................................................................23
Maintenance......................................................................................................................23
Directives in case of failure................................................................................................23
After-sales service by EagleBurgmann..............................................................................23
Reconditioning (repair) ......................................................................................................24
Disassembly / removal ......................................................................................................24
Spare parts........................................................................................................................25
Required details for enquiries and orders..........................................................................25
Disposal of the mechanical seal........................................................................................26
Copyright...........................................................................................................................26

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Keywords and Symbols
Following symbols for particularly important information are used:
"Attention, please pay special attention to these sections of text"
DANGER!
Draws attention to a direct hazard that will lead to injury or death
of persons
WARNING!
Draws attention to the risk that a hazard could lead to serious
injury or death of persons
CAUTION!
Draws attention to a hazard or unsafe method of working that
could lead to personal injury or damage to equipment
ATTENTION!
Identifies a potentially dangerous situation. If it is not avoided the
product or something in its vicinity could be damaged
IMPORTANT!
Identifies tips for use and other particularly useful information.

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GENERAL SAFETY NOTES
Any person involved in assembly, disassembly, start-up, operation and
maintenance of the mechanical seal must have read and understood this
operating manual and in particular the safety notes. We recommend the user
having this confirmed.
EagleBurgmann mechanical seals are manufactured to a high quality level and they
have a high working reliability. Yet, if they are not operated within their intended
purpose or handled inexpertly they may create risks.
The machine has to be set up in such a way that seal leakage can be led off and
disposed of properly and that any personal injury caused by spurting product in the
event of a seal failure is avoided.
Any operation mode that affects the operational safety of the mechanical seal is not
permitted.
Unauthorised modifications or alterations of the mechanical seal are not permitted.
Mechanical seals must be installed, operated, maintained and removed by
authorised, trained and supervised qualified personnel only. In case the
personnel has no long years of experience in handling with and operating of
mechanical seals and their supply systems, for this purpose, EagleBurgmann offers
corresponding seminars for achieving of the required knowledge.
The responsibilities for the respective jobs to be done have to be determined
clearly and observed in order to prevent ambiguous competencies from the point of
security.
Any work to be done on the mechanical seal is generally only permitted when the
seal is neither operating nor pressurised. The machine must be protected against
accidental start-up.
WARNING! Seals that have been used with hazardous substances must be properly
cleaned so that there is no possible danger to people or to the environment.
Apart from the notes given in this manual, the general regulations for worker's
protection and those for prevention of accidents have to be observed.

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Instructions for worker's protection
WARNING! If the medium to be sealed and/or the supply liquid is subject to the
Hazardous Substances Regulation (GefStoffV), the instructions for handling
dangerous substances (safety data sheets to Directive 91/155/EEC) and the
accident prevention regulations have be observed.
Medium to be sealed and/or supply medium may escape if the seal fails. Injury of
persons and environment must be prevented by the user providing for splash
protection and wearing of safety goggles. Care has to be taken by the user for
proper disposal of the leakage. The user has to control these measures.
The user has to check what effects a failure of the mechanical seal might have and
what safety measures have to be taken to prevent personal injury or damage to the
environment.
Notes on explosion protection
Mechanical seals are mechanical parts, which are put in circulation for general
technical purposes. They are not components within the meaning of Directive
2014/34/EU.
The respective probation as to explosion protection for the provided temperature
class must be carried out during the conformity assessment of the machine, into
which the mechanical seal is installed, by the machine manufacturer.
In case the assessment is carried out by the end user, the respective additional
operating manual has to be requested from EagleBurgmann.

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TRANSPORT / STORAGE
Transport
If not specified differently by contract, the EagleBurgmann standard packaging is
used which is suitable for dry transport by truck, train or plane. The warning signs
and notes on the packaging must be observed.
In addition, seaworthy packaging may become necessary.
Notes for income inspection:
Check packaging for visible damage.
Open packaging carefully. Do not damage or lose parts supplied separately.
Check if consignment is complete (delivery note). Inform the supplier immediately
in writing if parts are damaged or missing.
The mechanical seal has to be protected from damage during transport and storage.
The transport case in which the seal is supplied is well suited for this purpose and
should be kept for a possible return transport.
ATTENTION! If the machine as well as the mechanical seal installed into the machine
are transported together, the shaft must be protected from deflection at all times,
shocks and axial displacement by means of a suitable machine support.
Damage at the M.S. caused by insufficient protection during transport is excluded
from the warranty.

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Storage, "mothballing" (long term storage)
The following recommendations apply to all mechanical seals which have been
supplied and stored in their undamaged original packaging, as well as to seals
which have been installed in a machine (e.g. pump, compressor, agitator, etc.) but
have not yet been put into operation.
Mechanical seals and spare parts are super finished and repeatedly tested machine
elements. For storage special conditions have to be followed.
Sliding materials and secondary sealing elements are subject to material-specific and
time-based alterations (distortion, ageing) which might reduce the full efficiency of the
mechanical seals. Hence, this may be avoided by observing the storage instructions.
For the stock keeping of elastomers, special conditions are required. For all rubber-
elastic parts the rules of DIN 7716 resp. of ISO 2230-1973 (E) are valid.
Optimum conditions for storing of mechanical seals
dust free
moderately ventilated
constant temperature
relative air humidity below 65 %,
temperature between 15 °C and 25 °C.
Protect the mechanical seal from
direct exposure to heat (sun, heating)
ultraviolet light (halogen or fluorescent lamps, sunlight, arc welding)
presence or development of ozone (arc welding, mercury vapour lamps, high-
voltage devices, electric motors)
risk of embrittlement of elastomeric materials
It must be recognised that a difference exists between:
M.S. stored in the stock room
M.S. installed in the machine, but not yet in operation.

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M.S. in the stock
IMPORTANT! Store the seal in the original packaging lying on a flat surface.
Check the packaging periodically for damage.
Sealings packed in plastic-foil with humidity indicators have to be checked every
8 weeks. The check has to be recorded.
Packaging exceeding 50 % rel. humidity values must be sent to the manu-
facturer or the nearest EagleBurgmann service centre for inspection and new
packaging.
Unused stored mechanical seal under optimum conditions:
For reasons of safety, after 3 years from delivery of the mechanical seal the M.S.
should be returned to EagleBurgmann resp. nearest EagleBurgmann Service
centre for
Exchange of all secondary seals and springs
Verification of the flatness of the faces
Perhaps static pressure test.
M.S. installed into the machine:
ATTENTION! "Mothballing" (long term storage) of the mechanical seals is not allowed.
In case of a "mothballing" (long term storage) of complete machines with mechanical
seals installed EagleBurgmann has to be contacted.
Do not use corrosion protection agents.
Risk of deposition and possibly chemical attack of the secondary seals.
Due to longer erecting times of newly designed plant the period between delivery of
the mechanical seal and its installation and start-up in the machine may exceed a
period of 2-3 years.
After 3 years at the latest and in good time before the planned start-up of the plant
the seal has to be dismantled sent to the manufacturer or the nearest
EagleBurgmann service centre where it can be checked and reconditioned, if
necessary.
EagleBurgmann does not accept any warranty for damage caused by improper
storage.

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INFORMATION ABOUT THE PRODUCT
All technical information given is based on the results of extensive testing and on our
long term practical experience. However, in view of the great diversity of possible
applications the technical data can only be taken as being of approximate nature. We
can only guarantee the safe and efficient functioning in individual cases if we have
been comprehensively informed of the operating conditions to which they will be
subject, and if this has been confirmed in a separate written agreement.
Manufacturer and country of origin
EagleBurgmann Germany GmbH & Co. KG
Äußere Sauerlacher Str. 6-10
D - 82515 Wolfratshausen
Germany
Type series
EagleBurgmann Mechanical Seal (M.S.)
eMG/dw-G..
eMG1/dw-G..
eMG12/dw-G..
eMG13/dw-G..
eMG..S../dw-G..
eRMG../dw-G..
dw = specified shaft diameter
G.. = respective seat version
Versions
The seal types mentioned before are also usable as multiple mechanical seals in
tandem arrangement together with a pressureless supply (buffer) fluid system (API,
plan 52) or as dual mechanical seals (back-to-back / face-to-face) together with a
pressurised supply (barrier) fluid system (API, plan 53) (also in combination with seal
types of other series). Consultation with the EagleBurgmann company is
recommended.

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Materials
The materials of the mechanical seal depend on the application and are bound to the
customer order. They can be found on the drawing, and/or in the parts lists attached
to the documentation.
Designated use
This mechanical seal is exclusively designed for the use in the specified application.
A different utilisation or usage of the seal going beyond the specification is
considered contrary to its designated use and excludes a liability for possible
consequences by the manufacturer.
Operation of the seal under conditions lying outside the limits stated in paragraph
"Operating limits" is considered contrary to its designated use.
Should the mechanical seal be operated under different conditions or in a different
application EagleBurgmann must confirm that such a change is safe in advance of
subsequent operation.
Changes to operating conditions have to be documented.

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Operating limits
ATTENTION! Operating limits depending on the materials used.
Type: eMG and versions
Shaft diameter (dw) : 15 ... 110 mm
Temperature to be sealed (t1) : -20 ... +120 °C
Sliding speed (vg) : 10 m/s
Material combination : eSiC-Q7 / eSiC-Q7
A / eSiC-Q7
B / eSiC-Q7
Pressure to be sealed (p1) : 18 bar g
Material combination : Q1 / Q1
Pressure to be sealed (p1) : 10 bar g
Please observe that the given operating limits interact, and therefore not all
extreme values can be called on simultaneously.
Type: eRMG..-G6 and versions 1)
Shaft diameter (dw) : 15 ... 38 mm
Shaft speed (n) : max. 3600 rpm
Material combination : A / eSiC-Q7
Temperature to be sealed (t1) : -20 ... +140 °C
Pressure to be sealed (p1) : 16 bar g
Temperature to be sealed (t1) : -20 ... +120 °C
Pressure to be sealed (p1) : 25 bar g
Material combination : eSiC-Q7 / eSiC-Q7
B / eSiC-Q7
Temperature to be sealed (t1) : -20 ... +120 °C
Pressure to be sealed (p1) : 18 bar g
1) For other material combinations and seats the operating limits of the seal type
eMG apply.
Beyond that, the range of application of the respective product depends on the
diameter, the materials used, the operation mode and the media to be sealed.
If there are any unclear points please contact EagleBurgmann.

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Operating conditions
The exact operating data for the respective application, e.g. medium to be sealed,
operating pressure, operating temperature, speed, etc., are listed in the operating
manuals and the specification sheets of the machine manufacturer and/or the end
user.
The selection of the mechanical seal (type, suitability, materials) should be done by
EagleBurgmann staff or other authorised persons. A wrong selection by
unauthorised persons is not covered by EagleBurgmann's warranty.
Drawings
The status of the drawing at the time of delivery of the product and the corresponding
documentation is decisive.
In the following description all figures in parentheses, e.g. (2) define the respective
part item no. in fig. 1. The part item no. may vary from those stated on the
corresponding assembly drawing.
Description
Fig. 1
single seal
unbalanced
bi-directional
rotating seal face (1.1)
elastomeric bellows (1.2)
spring assembly (1.3)
disc (1.4)
no glued joints
rotating, torsion-free elastomeric
bellows serving as
face housing
secondary sealing element
driver
applying of force to the seal face by
means of "L"-rings and rotating
cylindrical single spring
(spring assembly #1.3)
stationary seat (2)
o-ring / rubber cup (3)
axial movability
dw = 15 … 18 mm ±1.0 mm
dw = 20 … 26 mm ±1.5 mm
dw = 28 … 110 mm ±2.0 mm

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Seat Versions
This operating manual applies also to the mentioned seal versions with slight
modifications and/or to combinations with seats not stated in this manual.
Required space, connecting dimensions
The required installation space for the mechanical seal is decisive for the design of
the housing parts by the machine manufacturer. The connecting dimensions have to
be checked by the machine manufacturer by means of the EagleBurgmann drawing
before mounting the mechanical seal.
Supply of M.S.
The mechanical seal has to be constantly wetted by liquid medium. The medium to
be sealed must not damage the M.S. neither chemically (e.g. corrosion,
embrittlement) nor physically (e.g. erosion, abrasion).
For a safe operation of the mechanical seal we recommend applying at inboard the
most suitable type of circulation described in API 610 / 682. This measure protects
the seal cavity from deposition of solids.
To operate multiple seals special supply systems are required. Please contact
EagleBurgmann.

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Emissions
A mechanical seal is a dynamic seal that cannot be free of leakage due to physical
and technical reasons. Seal design, manufacture tolerances, operating conditions,
running quality of the machine, etc. mainly define the leakage value. In fact,
compared to other sealing systems there is few leakage.
During the running-in phase of the M.S. an increased leakage may occur.
If the leakage amount does not decrease or if there are other malfunctions the
mechanical seal has to be shut down, removed and checked for reasons of safety.
The leakage can be liquid or gaseous. Its aggressiveness corresponds to that of the
medium to be sealed.
Leakage of the M.S. at outboard side has to be drained and disposed of properly.
IMPORTANT! Components which may have contact with the leakage have to be
corrosion-resistant or have to be adequately protected.
WARNING! If the medium to be sealed and/or the supply liquid is subject to the
Hazardous Substances Regulation (GefStoffV), the instructions for handling
dangerous substances (safety data sheets to Directive 91/155/EEC) and the
accident prevention regulations have be observed.

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INSTALLATION
Assembly utilities
ethyl alcohol
cellulose-tissue (no rag, no cloth!)
o-ring lifter
cardboard discs to cover the sliding faces during installation
assembling aid (e.g. sleeve, special tool etc.)
low-surface-tension water (e.g. with chloride-free surfactants
such as sodium dodecyl sulphate (SDS)) for elastomeric bellows seals
and static elastomeric secondary sealing elements of seats
ATTENTION! Oil or grease as assembly agent is not permitted in any case
Preparation for assembly
ATTENTION! To prevent damage to the seal, do not remove it from its packaging
until all the work described below has been completed.
Check the parts of the machine for:
chamfered edges
(sliding cones i.e. 2 mm / 30° or in
accordance with EN 12756)
radiused transitions
mating fits fine finished:
Rz 10 µm (= N7 = CLA 63)
shaft surface in the area of the
bellows: Rz = 10 µm (= N7 =
CLA 63)
surfaces for:
static secondary sealing elements
fine finished: Rz = 10 µm (= N7 =
CLA 63)
Shoulder or stop device for the bellows of the mech. seal to absorb axial forces
Check on the machine:
damage of connecting surfaces to the M.S.
mating dimensions, rectangularity and concentricity to the shaft axis.
Fix the machine shaft in centric and axial position.

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Type and quality of the shaft bearing have a major influence on the well-functioning
and the service life of the M.S.
Therefore, before installation of the M.S. both the
concentricity accuracy of the shaft
and the run-out accuracy between shaft and machine housing
have to be checked.
The maximum permitted axial displacements have to be considered, and the
instructions of the manufacturer have to be observed.
Concentricity accuracy of the shaft (acc. to DIN ISO 5199):
Shaft diameters up to 50 mm: max. 0.05 mm
Shaft diameters 50 mm - 100 mm: max. 0.08 mm
Eccentricity and run out as specified by EagleBurgmann!
Eccentricity of the inner surface of the seal
chamber to the shaft:
max. 0.2 mm
Run-out accuracy of the vertical contacting
surface between seal chamber and shaft axis:
Shaft speed ≤ 750 rpm: max. 0.2 mm
Shaft speed 1000 rpm: max. 0.15 mm
Shaft speed 1500 rpm: max. 0.08 mm
Shaft speed 3000 rpm: max. 0.025 mm
In case of installation into other machines the shown values apply as directive.
Prepare the assembly place, take away any not required tool, cuttings, dirty
cleaning wool etc.
Cover the work bench with a piece of clean, non-fibrous cardboard.

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Assembly / installation
Mechanical seals are super-finished and repeatedly tested machine elements whose
handling during assembly requires special care during certain procedures,
particularly when dealing with sliding materials and elastomers.
For installation the assembly drawing has to be observed.
Unpack the seal.
If necessary, use suitable auxiliaries (e.g. crane, elevating machinery, lifting
device, eye bolts etc.).
ATTENTION! The regulations for the prevention of accidents have to be followed.
After having unpacked the mechanical seal:
remove the protective covers from the sliding faces
clean the sliding faces with ethyl alcohol and paper tissues
check the parts for possible damage.
Never place the seal faces or seats on their sliding faces without having covered
them adequately.
Clean all parts thoroughly.
Check before starting assembly:
complete availability of all components by means of the drawing
all components have to be clean and in perfect condition.
The order of assembly to install the mechanical seal into the machine depends on
the design of the machine and has to be determined by the machine manufacturer.
If the machine manufacturer specified auxiliaries (jigs and fixtures) they have to be
used in accordance with the specifications of the manufacturer.
The mechanical seal has to be installed under the cleanest conditions
and very carefully.
Avoid unnecessary rotation of the shaft (damage of the sliding faces is
possible).
Never use force during installation.
Avoid knocking! Damage to mechanical seals has an adverse effect
on their safe operation.
Observe the notes on the current drawing; if necessary, please
contact EagleBurgmann.

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Possible installation order:
Installation of the seat:
Feed the degreased sealing element (o-ring, rubber cup) onto the seat.
If available:
Mark the position of the rear slot at the seat, namely at the front side beside the
sliding face.
Align the seat with the torque transmission pin.
Cover the sliding face of the seat with a cardboard washer.
Press the seat slowly and without interruption into its position.
Use plenty of low-surface-tension water or ethyl alcohol as lubricant.
If necessary, use an assembling aid.
Remove the cardboard washer from the sliding face.
Check the rectangular position of the seat.
If available:
Install the axial seat lock.

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Order of assembly 1: The seal cover is assembled at the beginning.
Mount the seal cover with the seat installed before.
Clean the sliding faces thoroughly with ethyl alcohol and paper tissues (no cloth,
no rags!).
In case of material "BUKO" (carbon graphite) wipe it until the paper tissues stay
clean.
Do not touch the sliding faces any longer with bare fingers.
Do not lubricate the sliding faces but mount them in a clean and dry state.
Sprinkle the elastomer bellows and the shaft with low-surface-tension water or
ethyl alcohol to decrease frictional force during assembly of the seal.
ATTENTION! Oil or grease as assembly agent is not permitted in any case
Carefully feed the rotating unit (1.1 ... 1.4)
onto the shaft.
The fitting dimensions shown on the drawing
must be observed by all means.
For long pushing distances add liquid several
times.
Apply any assembly force only to the rear
side of elastomeric bellows (1.2)!
Preferably use a mounting sleeve.
Check spring assembly ("L"-rings, spring) and seal face for correct fit
(e.g. "L"-rings not in skew position etc.).
Mount stop device for bellows unit to absorb axial forces.
The fitting dimensions shown on the drawing must be observed by all means.
Any further assembly of the machine must be in accordance with the instructions
of the machine manufacturer.

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Order of assembly 2: The seal cover is assembled at the very end.
Sprinkle the elastomer bellows and the shaft with low-surface-tension water or
ethyl alcohol to decrease frictional force during assembly of the seal.
ATTENTION! Oil or grease as assembly agent is not permitted in any case
Carefully feed the rotating unit (1.1 ... 1.4)
onto the shaft, until the bellows shoulder
contacts the shaft shoulder.
For long pushing distances add liquid several
times.
Apply any assembly force only to the rear coil
of the spring!
If necessary, use an assembling aid.
Check spring assembly ("L"-rings, spring) and seal face for correct fit
(e.g. "L"-rings not in skew position etc.).
Clean the sliding faces thoroughly with ethyl alcohol and paper tissues (no cloth,
no rags!).
In case of material "BUKO" (carbon graphite) wipe it until the paper tissues stay
clean.
Do not touch the sliding faces any longer with bare fingers.
Do not lubricate the sliding faces but mount them in a clean and dry state.
Mount the seal cover with the seat installed before.
The fitting dimensions shown on the drawing must be observed by all means.
Any further assembly of the machine must be in accordance with the instructions
of the machine manufacturer.