User Instructions
- Original Instructions-
Split Mechanical Seal MSS
For Piloted and Non-Piloted Models
Installation and Maintenance Instructions for Machinery Parts
Experience in Motion
2
1. Drawing, Brief Description, Function
See the annex for the installation drawing.
1.1 Specifications
for the operations described herein:
Application limits:
Product pressure (bar) Vacuum / 5 1)
Va
cuum / 7
2)
Test pressure product chamber (bar) 8 3)
Speed (rpm) 350
1)
1750
2)
Product temperature (°C) up to 121
1)
dry
2)
wet
3)
statically, v = 0 m/s
The application limits specified are maximum load values and assist in
preselection. The application limits must be checked for every application.
A warranty in an individual case is possible only when FLOWSERVE
knows the exact application conditions and these have been confirmed in
a seperate agreement.
1.2 Brief description
The split mechanical seal MSS is delivered as a bidirectional, partially assembled
mechanical seal. While it has been designed for rugged industrial applications and
ease of installation, it does require careful assembly in a clean environment according to the following installation steps.
The MSS seal is primarily designed to seal agitator shafts and can be run dry up
to 350 rpm or wet up to 1750 rpm. Consult your local nearest Flowserve Sales and
Service Representative, regarding other applications.
1.3 The spring force and the product pressure push the seal ring against the mating ring.
The seal faces are sealed from the shaft sleeve, respectively from the housing, by
sealing elements (e. g. O-rings). The faces of the seal ring and the mating ring are
designed as sealing faces.
!
The installation chamber for the mechanical seal type MSS must be checked
against the corresponding drawing and table of dimensions. It must be ensured
that all dimensions, surface qualities and tolerances (e. g. concentricity, runout,
fits) are observed.
3
Split Mechanical Seal MSS - Installation and maintenance instructions for machinery parts
1.4 Function
The faces of the seal ring and the mating ring are designed as sealing faces. The seal
faces of the seal rings are contacting and wearing slightly, when the machine shaft
rotates. The consumed quantity of product leakage is low and depends on the operating conditions, it enters the atmosphere through the seal gap.
!
The product pressure may not exceed the values given under item 1.1.
1.5 Function conditions
The MIXERPAC’s function is obtained only when the following conditions are fulfilled:
•
Plane-lapped seal faces.
•
Perpendicularity between the seal faces and the shaft centerline.
•
Unforced clearance of the rotating parts within the specified tolerances.
•
Prevention of sedimentation on the surfaces of the shaft or shaft sleeve by e. g.
crystalliation or polymerisation.
•
Prevention of the product from adhering in the area at the seal gaps.
•
Permanent fluid film in the seal gaps.
•
Adherence to the specified operating data as per item 1.1 respectively the data
sheet.
If these function conditions are not fulfilled, the leakage rate increases and parts
of the product can escape into the atmosphere. Additionally, disregarding of these
issues can result in high component temperatures.
!
See the Directive 94/9/EC. EN 13463, Part 1 - 8.
2.0 Information on Safety
2.1
DANGER:
This symbol means, that failing to observe this information involves
the risk of personal injury and / or considerable damage to property.
!
IMPORTANT: This symbol draws your particular attention to important informa-
tion that is possibly not clear even to qualified personnel. This information, however, must be observed to prevent malfunctions that in
turn could directly or indirectly give rise to serious injury and / or
property damage.
2.2 The customer and / or the operator must ensure that all persons assigned to handle,
assemble or run the machine have carefully read these installation and maintenance
instructions, before they commence any installation and maintenance work at the
MSS or before operate the machine. These personnel must be fully acquainted with
the layout and function of the MSS and the respective support system.
4
2.3 Damage may cause leakage in gaseous form. The hazardous effects correspond
to those of the product, and there may be hazard to persons or the environment.
The operator’s regulations concerning work safety, accident prevention, and pollution for this plant section must be adhered to without exception.
2.4
!
Components coming into contact with the leakage must be corrosion-resistant or
corrosion-proof.
2.5
!
Mechanical seals must be decontaminated before they are sent to FLOWSERVE
for maintenance or repair.
2.6
!
When employing elastomers of EP (ethylene-propylene) or butyl rubber, do not
use any grease or oil on a mineral basis as a lubricant.
2.7
A loss, a re-establishment or a change of the power supply for the machine and /
or the barrier system may not impair the properties of the mechanical seal and /
or involves a risk of personal injury and / or considerable damage to property.
2.8
Assigned protection devices from the machine manufacturer must be accordingly
arranged and may no cause additional endangerments. They must ensure the
necessary range for the accessibility to maintenance work to the mechanical seal.
2.9
The electrical supply of the machine must correspond to the protection targets of
the Directive 2006/95/EC.
No endangerments for persons and environment may proceed from a non electric
power supply.
3.0 General
3.1 All illustrations and details in these instructions are subject to technical alterations
that are necessary in improving the mechanical seal.
3.2 The copyright on these installation and maintenance instructions is the property of
FLOWSERVE. These installation and maintenance instructions are intended for the
assembly, operating, and supervisory personnel and contain regulations and drawings of a technical character that may not, in full or in part, be copied, distributed,
used without authorization for competitive purposes, or given to others.
3.3 We point out that we accept no liability for any instances of damage or malfunctions
of the machine incurred through nonadherence to these installation and maintenance
instructions.
5
Split Mechanical Seal MSS - Installation and maintenance instructions for machinery parts
4.0 Transport, Storage
4.1 The mechanical seal must be transported and stored in the unopened original packaging. The storage site must be dry and free of dust. Influences through temperature
or irradiation must be avoided.
4.2 Parts or complete mechanical seals that have been dropped or otherwise subjected to
heavy impacts during transport must not be installed. An inspection by FLOWSERVE
becomes necessary.
4.3 After a storage period of three years the mechanical seal must be inspected for prop
erties as new. This applies in particular to the secondary seals and seal faces. We
recommend an inspection by FLOWSERVE.
4.4
!
If the machine is to be preserved with integrated mechanical seal the preserving
medium must not impair the function of the mechanical seal by e. g. fouling or
hardening or swelling the secondary seals.
4.5 The mechanical seal must be transported with adequate tools, e. g. by using
industrial trucks or lifting devices.
5.0 Preparing for Installation
5.1
!
The mechanical seal may be installed when there are no visible signs of damage
to the mechanical seal. This applies in particular to the static faces of the flange,
centrings and the static sealing elements.
!
Before installing, consult the specifications on the accompanying documents to
verify that the correct mechanical seal has been installed correctly and is suitable
for the specified application. Do not exceed the design data.
!
Requisite for all assembly work are the installation drawing and parts list and the
tools and aids required for the assembly.
!
Vibrations must not be allowed to reach the installed mechanical seal when the
machine is operating or in particular when it is shut down. Vibrations can be
stopped e.g. by structural measures on the machine.
!
Installation of this seal requires the use of an adhesive to bond the O-ring secondary seals together. Do not allow the adhesive to come in contact with the skin.
!
The installation chamber for the mechanical seal must be checked against the
corresponding drawing and table of dimensions. It must be ensured that all
dimensions, surface qualities and tolerances (e. g. concentricity, runout, fits) are
observed.
6
!
Ensure the highest degree of cleanness. Force must not be used to install the
seal. Use only suitable tools and devices.
!
The seal faces of the mechanical seal are important functional sections and may
not be damaged.
!
All functional and assembly areas for the secondary seals (e.g. O-rings) must be
dimensionally accurate, free of scratches and burrs, flash-free and rounded.
!
The fitting surfaces of the mechanical seal and the installation chamber must be
undamaged and dry. Ensure the highest degree of cleanness.
!
A thin coat of product-compatible grease (e. g. Molykote M55) is to be applied to
the sealing elements. Excess grease is to be avoided.
!
Depending on the installation direction, a lubricant, (e. g. Molykote D321R) or
PTFE spray without solvent, must be applied to the shaft or shaft sleeve.
!
The areas for the clamp-connections must remain free of grease, otherwise the
adhesive force will become inadequate for correct functioning
5.2
Equipment Check
5.2.1 Follow plant safety regulations prior to equipment disassembly:
• lock out motor and valves.
• wear designated personal safety equipment.
• relieve any pressure in the system.
• consult plant MSDS files for hazardous material regulations.
5.2.2 Dismantle the machine in accordance with the instructions from the machine manu
-
facturer to reach the installation chamber for the mechanical seal.
5.2.3 Remove existing mechanical seal and gland or packing gland (follower flange) and
the first few rings of compression packing down to the lantern ring.
5.2.4 Make sure the shaft or sleeve in the seal shaft packing (P) area and the seal hous
ing bore (B) and face are clean and free of burrs, cuts, dents or corrosion that might
cause leakage past the rotating face gasket or stationary face mounting O-rings.
5.2.5 Check equipment dimensions to ensure that they are within the dimensions shown
in Figures 1 and 2 or 3. Critical dimensions include shaft or sleeve OD (A), seal
housing bore (B), and the distance to the first obstruction (J).
5.2.6 Check gland bolting to ensure that bolt size (D) and bolt circle (F) conform to the
dimensions shown in Figures 2 or 3.
7
Split Mechanical Seal MSS - Installation and maintenance instructions for machinery parts
!
Tools needed for installation:
- A 5/32“ T-handle or right angle Allen wrench.
- An open end wrench for the gland bolts.
- Two (2) 1/8“ Allen wrenches.
!
Cleanliness during installation is crucial to the satisfactory operation of the MSS
seal.
!
Installation of this seal requires the use of an adhesive to bond the O-ring
secondary seals together. Do not allow the adhesive to come in contact with the
skin.
There are two basic models of the MSS seal, piloted, see Figure 2, page 9, and
NON-Piloted, see Figure 3, page 13.
Seal chamber requirements
Figure 1
!
- Bearings must be in good condition.
- Maximum axial movement of shaft (end play) = 0.010inch (0.25 mm) FIM.
- Maximun combined shaft eccentricity and shaft deflection at face of housing
total = 0.150 inch (3.8 mm) FIM.
Shaft or sleeve O.D.
±0.001” (0.025 mm)
Face of seal housing to be square to
the axis of the shaft within 0.020”
(0.5 mm) FIM. and have a 63 µinch
(Ra 1.6 µm) finish or better.
Shaft or sleeve finish to be 32 µinch
(Ra 0.8 µm) finish
or better
A
J
B
8
6.0 Installation
6.1 The mechanical seal type MSS is installed in the mixer in accordance with the ins-
tructions from the machine manufacturer and with consideration to the following
recommendations.
The machine to take the mechanical seal type MSS must be earthed in accordance with the applicable regulations for electrical installations (e. g. VDE rules)
to conduct away any electrostatic build-up and so prevent spark formation.
Parts of the mechanical seal, which needs to be entered during assembly works,
needs to be secured against slipping, stumbling or falling (e. g. by holding
devices).
Installation of the mechanical seal type MSS on the machine may take place
during machine breakdown only.
!
The areas for the clamp-connections must remain free of grease, otherwise the
adhesive force will become inadequate for correct functioning.
!
There are two basic models of the MSS seal, piloted, see Figure 2, page 9, and
NON-Piloted, see Figure 3, page 13.
6.2 Installation of Piloted MSS (see Figure 2).
6.3 Spray one end of one of the split stationary face seat gasket O-rings
6
with the
adhesive accelerator provided. Apply one drop of the adhesive provided to the other
end. Position the split O-ring around the shaft and bond the joint ends together. Hold
for one minute to assure a suitable bond. Lubricate the O-ring with the silicone lubricant provided. Place the bonded O-ring on the seal chamber (stuffing box) face.
Bond O-ring joint ends together Ref. 6.3
Install Insert Halves Reference 6.4
9
Split Mechanical Seal MSS - Installation and maintenance instructions for machinery parts
Dimensional Data for MSS with Piloted Insert
(Reference Figure 2)
MSS with Piloted Insert
Figure 2
2 - D f Studs equally
spaced on F, bolt circle
A B C D E F G H J
±.001" ±0.005" Min. Min. Min. Min.
1.000 2.250 3.38 0.500 5.75 4.75 0.75 3.44 4.44
1.125 2.375 3.50 0.500 5.88 4.88 0.75 3.44 4.44
1.250 2.500 3.62 0.500 6.00 5.00 0.75 3.44 4.44
1.375 2.625 3.75 0.500 6.12 5.12 0.75 3.44 4.44
1.500 2.750 3.88 0.500 6.25 5.25 0.75 3.44 4.44
1.625 2.875 4.00 0.500 6.38 5.38 0.75 3.44 4.44
1.750 3.000 4.12 0.500 6.50 5.50 0.75 3.44 4.44
1.875 3.125 4.25 0.500 6.62 5.62 0.75 3.44 4.44
2.000 3.250 4.38 0.500 6.75 5.75 0.75 3.44 4.44
2.125 3.375 4.50 0.500 6.88 5.88 0.75 3.44 4.44
2.250 3.500 4.62 0.500 7.00 6.00 0.75 3.44 4.44
2.375 3.625 4.75 0.500 7.12 6.12 0.75 3.44 4.44
2.500 3.750 4.88 0.500 7.25 6.25 0.75 3.44 4.44
2.625 3.875 5.00 0.500 7.38 6.38 0.75 3.44 4.44
2.750 4.000 5.12 0.500 7.50 6.50 0.75 3.44 4.44
2.875 4.125 5.25 0.500 7.62 6.62 0.75 3.44 4.44
3.000 4.250 5.38 0.500 7.75 6.75 0.75 3.44 4.44
3.125 4.375 5.50 0.500 7.88 6.88 0.75 3.44 4.44
3.250 4.500 5.62 0.500 8.00 7.00 0.75 3.44 4.44
3.375 4.625 5.75 0.500 8.12 7.12 0.75 3.44 4.44
3.500 4.750 5.88 0.500 8.25 7.25 0.75 3.44 4.44
3.625 4.875 6.00 0.500 8.38 7.38 0.75 3.44 4.44
3.750 5.000 6.12 0.500 8.50 7.50 0.75 3.44 4.44
3.875 5.125 6.25 0.500 8.62 7.62 0.75 3.44 4.44
4.000 5.250 6.38 0.500 8.75 7.75 0.75 3.44 4.44
4.125 5.375 6.50 0.500 8.88 7.88 0.75 3.44 4.44
4.250 5.500 6.62 0.500 9.00 8.00 0.75 3.44 4.44
4.375 5.625 6.75 0.500 9.12 8.12 0.75 3.44 4.44
A B C D E F G H J
±.001" ±0.005" Min. Min. Min. Min.
4.500 5.750 6.88 0.500 9.25 8.25 0.75 3.44 4.44
4.625 5.875 7.00 0.500 9.38 8.38 0.75 3.44 4.44
4.750 6.000 7.12 0.500 9.50 8.50 0.75 3.44 4.44
4.875 6.250 7.25 0.500 9.62 8.62 0.75 3.44 4.44
5.000 6.500 7.75 0.625 10.75 9.50 0.94 4.00 5.00
5.250 6.750 8.00 0.625 11.00 9.75 0.94 4.00 5.00
5.500 7.000 8.25 0.625 11.25 10.00 0.94 4.00 5.00
5.750 7.250 8.50 0.625 11.50 10.25 0.94 4.00 5.00
6.000 7.500 8.75 0.625 11.75 10.50 0.94 4.00 5.00
6.250 7.750 9.00 0.625 12.00 10.75 0.94 4.00 5.00
6.500 8.000 9.25 0.625 12.25 11.00 0.94 4.00 5.00
6.750 8.250 9.50 0.625 12.50 11.25 0.94 4.00 5.00
7.000 8.500 9.75 0.625 12.75 11.50 0.94 4.00 5.00
7.250 8.750 10.00 0.625 13.00 11.75 0.94 4.00 5.00
7.500 9.000 10.25 0.625 13.25 12.00 0.94 4.00 5.00
7.750 9.250 10.50 0.625 13.50 12.25 0.94 4.00 5.00
8.000 9.500 10.75 0.625 13.75 12.50 0.94 4.00 5.00
8.250 9.750 11.00 0.625 14.00 12.75 0.94 4.00 5.00
8.500 10.000 11.25 0.625 14.25 13.00 0.94 4.00 5.00
8.750 10.500 11.50 0.625 14.50 13.25 0.94 4.00 5.00
9.000 11.000 12.25 0.750 16.00 14.50 1.25 4.81 5.81
9.500 11.500 12.75 0.750 16.50 15.00 1.25 4.81 5.81
10.000 12.000 13.25 0.750 17.00 15.50 1.25 4.81 5.81
10.500 12.500 13.75 0.750 17.50 16.00 1.25 4.81 5.81
11.000 13.000 14.25 0.750 18.00 16.50 1.25 4.81 5.81
11.500 13.500 14.75 0.750 18.50 17.00 1.25 4.81 5.81
12.000 14.000 15.25 0.750 19.00 17.50 1.25 4.81 5.81
!
Note: Dimension J reflects
minimum distance required
for the assembled seal
plus additional axial space
required for seal assembly
C
J
H
G
A
E
K1
5
P1
K
2
1
P2
P
3
6
B
K1
57
10
!
Be careful not to let O-ring fall in to the bore.
6.4 Install the stationary face halves
2
around the shaft with the lapped face outward
(non-lapped face is identififed with a groove or part marking) away from the seal
chamber face. Hold the stationary face up
and place the bonded O-ring over the stationary face shoulder closest to the seal
chamber face. Pilot the inner stationary face
shoulder into the seal chamber bore.
6.5 Bond and lubricate the second statio
-
nary face seat gasket O-ring
6
around
the shaft and place it over the outer stationary face shoulder.
6.6 Position the gland ring halves
1
around the shaft with the counterbore
facing the stationary face. Place the
gland halves around the stationary face
and fas-ten them together using the
shoulder screwsK2 provided.
!
Be sure the gland ring joints are in line with the stationary face joints and
the two bolt holes are in line with the bolt holes or studs in the seal chamber
face.
!
It is imperative that the centering of the mechanical seal type MSS components
in the mixer vessel’s assembly flange without force. Under no circumstances may
the given fit tolerances be exceeded.
6.7 Carefully fasten the gland to the seal cham
-
ber by tightening the nuts or bolts to a 30
lb-in (3.4 Nm) maximum torque while feeling
for sealing face mismatch at the stationary
face joints. If any mismatch exists, loosen
the nuts or bolts and shift the stationary face
halves until no mismatch is felt. Retighten the
nuts or bolts.
!
Do not overtighten the gland nuts or
bolts
as overtightening on some equipment may cause the stationary face to
distort which may result in leakage at the
sealing faces. It is not necessary for the
gland to have metal-to-metal contact with
O-ring over the stationary face outer shoulder
Reference 6.5
Fasten the gland ring to the seal
housing
Reference 6.7
11
Split Mechanical Seal MSS - Installation and maintenance instructions for machinery parts
the seal chamber face for the inner stationary face O-ring to form a seal. The
gland face must, however, be square with the axis of the shaft to within 0.020“
FIM.
Components provided by the customer for installing the mechanical seal type
MSS, e.g. fastening screws, must prove adequate both in the choice of material
and the dimensions. It must not be possible to overstress these components, e.
g. the max permitted tightening torque must not be exceeded.
6.8 Mount the rotating seal face halves
3
around the shaft and fasten them together
using the cap screwsKprovided, tighten to
a 30 lb-in (3.4 Nm) torque maximum. Check
for seal face joint mismatch. If any mismatch
exists, loosen the cap screws and shift the
rotating seal face halves until no mismatch is
felt. Retighten the cap screws.
Note: There are threads on both halves of the
rotating seal face. Align halves carefully so
as to not allow a gap between halves during
tightening.
The shaft sleeve can be displaced in radially or axially direction, if the seal drive
connection is not accomplished according the requirements.
6.9 Clean the rubbing faces
of the stationary face and rotating face ring with alcohol
and place the rotating face so that its rubbing face is against the stationary face rubbing
face.
6.10 Position the split rotating face gasket
O-ringParound the shaft, bond and
lubricate as in Step 6.3, and push the
O-ring into the rotating face bore.
6.11 Install the white split backing ring
P1
into the rotating face bore next to the
O-ring. Install the two black elastomer
backing rings
P2
. Be sure to stagger
the backing ring joints by 120° .
!
Do not bond the backing ring joints
together or with each other.
6.12 Mount the seal drive halves
5
around the shaft and loosely fasten them together
with the shoulder screwsK1 provided. Line up the pins in the seal drive with the
holes in the rotating face and slide the seal drive towards the rotating face until a
Reference 6.8
Reference 6.10
12
0.12“ (3 mm) spring gap is achieved
using the two 1/8“ Allen wrenches as
spacers. Tighten the shoulder screws
completely and lock seal drive to shaft.
Designs that incorporate set screws
57
in the seal drive, after tightening
sholder screwsK1, tighten the set
screws57 to lock the seal drive to
the shaft.
The seal is now ready for operation.
See paragraph 8.0, „Starting up the
Machine“, before start-up.
!
Once more check the running precision as per paragraph 5.2.6 and the installation dimensions according the
assembly drawing.
The installation dimensions of the mechanical seal type MSS must apply to the
dimensions shown on the assembly drawing. Non-compliance of the information
shown on the assembly drawing may cause in damages.
!
For special problems encountered during installation, contact your nearest
Flowserve Sales and Service Representative or Authorized Distributor.
6.13 Installation of Non-Piloted MSS (see Figure 3).
6.14 Spray one end of the split gland gasket O-ring
G
with the adhesive accelerator
provided. Apply one drop of the adhesive provided to the other end. Position the
split O-ring around the shaft and bond the joint ends together. Hold for one minute
to assure a suitable bond. Lubricate the O-ring with the silicone lubricant provided.
Place the bonded O-ring on the seal chamber (stuffing box) face.
6.15 Remove the retainer halves
RP
from the face of the gland halves1 and save the
retainer halves and cap screws
K3
for Step 6.20.
6.16 Position the gland ring halves
1
around the shaft and fasten
them loosely together
using the shoulder screwsK2 provided.
6.17 Use some silicone lubricant provided to hold the gland gasket O-ring in its groove
and position the gland on the seal chamber face by loosely tightening the nuts or.
(See paragraph 6.7).
6.18 Bond one of the split stationary face seat gasket O-rings
6
and lubricate as in
Step 6.14. Place the bonded O-ring in the gland counterbore.
Mount seal drive halves and set spring gap
Reference 6.12
13
Split Mechanical Seal MSS - Installation and maintenance instructions for machinery parts
4.500 6.88 0.500 9.25 8.25 1.06 3.38 4.38
4.625 7.00 0.500 9.38 8.38 1.06 3.38 4.38
4.750 7.12 0.500 9.50 8.50 1.06 3.38 4.38
4.875 7.25 0.500 9.62 8.62 1.06 3.38 4.38
5.000 7.75 0.625 10.75 9.50 1.31 3.88 4.88
5.250 8.00 0.625 11.00 9.75 1.31 3.88 4.88
5.500 8.25 0.625 11.25 10.00 1.31 3.88 4.88
5.750 8.50 0.625 11.50 10.25 1.31 3.88 4.88
6.000 8.75 0.625 11.75 10.50 1.31 3.88 4.88
6.250 9.00 0.625 12.00 10.75 1.31 3.88 4.88
6.500 9.25 0.625 12.25 11.00 1.31 3.88 4.88
6.750 9.50 0.625 12.50 11.25 1.31 3.88 4.88
7.000 9.75 0.625 12.75 11.50 1.31 3.88 4.88
7.250 10.00 0.625 13.00 11.75 1.31 3.88 4.88
7.500 10.25 0.625 13.25 12.00 1.31 3.88 4.88
7.750 10.50 0.625 13.50 12.25 1.31 3.88 4.88
8.000 10.75 0.625 13.75 12.50 1.31 3.88 4.88
8.250 11.00 0.625 14.00 12.75 1.31 3.88 4.88
8.500 11.25 0.625 14.25 13.00 1.31 3.88 4.88
8.750 11.50 0.625 14.50 13.25 1.31 3.88 4.88
9.000 12.25 0.750 16.00 14.50 1.69 4.62 5.62
9.500 12.75 0.750 16.50 15.00 1.69 4.62 5.62
10.000 13.25 0.750 17.00 15.50 1.69 4.62 5.62
10.500 13.75 0.750 17.50 16.00 1.69 4.62 5.62
11.000 14.25 0.750 18.00 16.50 1.69 4.62 5.62
11.500 14.75 0.750 18.50 17.00 1.69 4.62 5.62
12.000 15.25 0.750 19.00 17.50 1.69 4.62 5.62
A C D E F G H J
±.001" Min. Min. Min. Min.
Dimensional Data for MSS with Non-Piloted Insert (
Reference Figure
3)
A C D E F G H J
±.001" Min. Min. Min. Min.
1.000 3.38 0.500 5.75 4.75 1.06 3.38 4.38
1.125 3.50 0.500 5.88 4.88 1.06 3.38 4.38
1.250 3.62 0.500 6.00 5.00 1.06 3.38 4.38
1.375 3.75 0.500 6.12 5.12 1.06 3.38 4.38
1.500 3.88 0.500 6.25 5.25 1.06 3.38 4.38
1.625 4.00 0.500 6.38 5.38 1.06 3.38 4.38
1.750 4.12 0.500 6.50 5.50 1.06 3.38 4.38
1.875 4.25 0.500 6.62 5.62 1.06 3.38 4.38
2.000 4.38 0.500 6.75 5.75 1.06 3.38 4.38
2.125 4.50 0.500 6.88 5.88 1.06 3.38 4.38
2.250 4.62 0.500 7.00 6.00 1.06 3.38 4.38
2.375 4.75 0.500 7.12 6.12 1.06 3.38 4.38
2.500 4.88 0.500 7.25 6.25 1.06 3.38 4.38
2.625 5.00 0.500 7.38 6.38 1.06 3.38 4.38
2.750 5.12 0.500 7.50 6.50 1.06 3.38 4.38
2.875 5.25 0.500 7.62 6.62 1.06 3.38 4.38
3.000 5.38 0.500 7.75 6.75 1.06 3.38 4.38
3.125 5.50 0.500 7.88 6.88 1.06 3.38 4.38
3.250 5.62 0.500 8.00 7.00 1.06 3.38 4.38
3.375 5.75 0.500 8.12 7.12 1.06 3.38 4.38
3.500 5.88 0.500 8.25 7.25 1.06 3.38 4.38
3.625 6.00 0.500 8.38 7.38 1.06 3.38 4.38
3.750 6.12 0.500 8.50 7.50 1.06 3.38 4.38
3.875 6.25 0.500 8.62 7.62 1.06 3.38 4.38
4.000 6.38 0.500 8.75 7.75 1.06 3.38 4.38
4.125 6.50 0.500 8.88 7.88 1.06 3.38 4.38
4.250 6.62 0.500 9.00 8.00 1.06 3.38 4.38
4.375 6.75 0.500 9.12 8.12 1.06 3.38 4.38
2 - D f Studs equally
spaced on F, bolt circle
C
J
H
G
A
E
K1
1
K
K2
3
G
M2
P2
P1
P
6
5
RP
2
K3
.12"
57
MSS with of Non-Piloted Insert
Figure 3
14
6.19 Install the stationary face halves2 around the shaft with the lapped face outward
(non-lapped face is identified with a groove or part marking) away from the seal
chamber face. Insert the stationary face into the gland bore and nest it in the O-ring
6
while making sure there is no sealing face mismatch at joints. If mismatch is
present, gently remove it.
!
Be sure the stationary face joints are in line with the gland ring joints.
6.20 Bond and lubricate the second stationary face mounting O-ring
6
around the
shaft as in Step 6.14 and place it over the stationary face outer shoulder.
6.21 Securely attach the retainer halves
RP
to the face of the gland using cap screws
K3
while positioning the retainer over the outer stationary face mounting O-ring.
6.22 Tighten the shoulder screws
K2
in the gland ring halves1while feeling for sealing face mismatch at the stationary face joints. If any mistach ocurs, loosen the
shoulder screwsK2 and shift the stationary face halves to remove the mismatch
then continue with tightening the shoulder screws.
6.23 Insert the plastic centering device
M2
between the insert ID and the shaft.
6.24 Tighten the gland fastening nuts or bolts holding the gland to the seal chamber
to
30 lb-in (3.4 Nm) maximum torque while feeling for seal face mismatch at stationary
face joints. If any mismatch exists, loosen gland fastening nuts or bolts and shoulder and retighten the nuts or bolts.
!
Do not overtighten the gland fastening nuts or bolts as overtightening on some
equipment may cause the stationary face to distort which may result in leakage
at the sealing faces. It is not necessary for the gland to have metal-to-metal contact with the seal chamber face for the inner stationary face mounting O-ring to
form a seal. The gland face must, however, be square with the axis of the shaft
to within 0.020“ FIM (0,5 mm).
6.25 Remove the centering device
M2
. Retain it for use with the spare parts kit.
6.26 Mount the rotating seal face halves
3
around the shaft and fasten them together
using the cap screwKprovided, tighten to a 30 lb-in (3.4 Nm) torque maximum.
Check for seal face joint mismatch. If any mismatch exists, loosen the cap screws
and shift the rotating face halves until no mismatch is felt. Retighten the cap.
6.27 Clean the rubbing faces
of the rotating and stationary face with alcohol and place
the rotating face so that its rubbing face is against the stationary rubbing face. See
Step 6.9.
6.28 Position the split shaft packing O-ring
P
around the shaft and bond the joint ends
together as in Step 6.14. Lubricate the O-ring with the silicone lubricant provided
and push the O-ring into the seal ring bore. See Step 6.10.
15
Split Mechanical Seal MSS - Installation and maintenance instructions for machinery parts
6.29 Install the white split backing ringP1 into the seal ring bore next to the O-ring.
Install the two black elastomer backing rings
P2
. Be sure to stagger the backing
ring joints by 120°.
!
Do not bond the backing ring joints together.
6.30 Mount the seal drive halves
5
around the shaft and loosely fasten them together
with the shoulder screwsK1 provided. Line up the pins in the seal drive with the
holes in the rotatig face and slide the seal drive towards the rotating face until a
0.12“ (3 mm) spring gap is achieved using the two 1/8“ Allen wrenches as spacers.
Tighten the shoulder screws completely
and lock seal drive to shaft.
Designs that incorporate set screws
57
in the seal drive, after tightening shol-
der screwsK1, tighten the set screws57 to lock the seal drive to the shaft.
The seal is now ready for operation.
!
For special problems encountered during installation, contact your nearest
Flowserve Sales and Service Representative or Authorized Distributor.
7.0 Connecting the Seal Support System
7.1 The mechanical seal type MSS is pressurized from the product pressure, see para-
graph 3.1, due to this the connection of a seal support system is inapplicable.
7.2 A check can now be conducted on the mixer’s sense of rotation (without pressurized
product chamber).
8.0 Starting up the Machine
!
The MSS seal is designed to run dry at speeds of up to 350 rpm. If operated
dry, no special environmental controls are necessary. For wet operation of up to
1750 rpm, make sure that the seal water flush, Plan 32, is adequate to remove
seal generated heat and that the flush is on before start-up of the equipment.
Contact your nearest Flowserve Sales and Service Representative or Authorized
Distributor, for seal flush requirements
!
Parts of the mechanical seal type MSS, which rotate during operation of the
machine, must be secured against contacts, in accordance with the specifications from the machine manufacturer.
8.1 The mechanical seal type MSS is ready for operation of the machine after it has been
installed.
8.2 The installed mechanical seal type MSS is bidirectional.
16
8.3 For the static pressure test on the product vessel the vessel pressure may not exceed the
values given under item 1.1.
Temperatures at the component surfaces of the mechanical seal type MSS
correspond to the operating temperatures of the product. Suitable precautions
against contacts are necessary.
!
The mechanical seal type MSS will be damaged when the conditions given under
item 1.5 are not maintained.
!
Follow the instructions both for start up and re-commisioning of the machine
after a machine breakdown, see items 8.0 to 8.3.
Escaping leakage must not form an explosive mixture.
8.4 Possible malfunctions
:
SYMPTOM CAUSE
Dramatic increase
of the leakage rate
- Shaft rotates eccentric.
- Damage to the mechanical seal
(product enters the atmosphere).
8.5 The mixer shaft may be stopped at any time.
!
The mechanical seal type MSS cannot function during all assembly and maintenance work.
9.0 Shutting Down the Machinet and MSS Removal
9.1 The machine can be shut down at any time under normal conditions.
9.2 Before the mechanical seal type MSS can be removed the machine must first be shut
down and the mixer vessel depressurized.
9.3 The shaft may be shut down under pressurized conditions.
9.4 Remove the mechanical seal type MSS by the instructions for installation in reverse
order.
Der Removing the mechanical seal type MSS from the machine may take place
during machine breakdown only.
Temperatures at the component surfaces of the mechanical seal type MSS
correspond to the operating temperatures of the product. Suitable precautions
against contacts are necessary.
Removing the seal may release product! All information and regulations regarding safety measures and protective clothing with respect to this plant section
must be observed and strictly adhered to. The operator must ensure the proper
17
Split Mechanical Seal MSS - Installation and maintenance instructions for machinery parts
disposal of the media collected when the machine is vented or drained.
9.5 Carefully replace the removed mechanical seal type MSS in the original packaging
(e.g. wooden crate) and store or send this to FLOWSERVE for inspection.
9.6
!
Follow the instructions for recommissioning of the machine, after a machine
breakdown, see items 8.0 to 8.3.
9.7 When seals are returned to Flowserve for repair, decontaminate the seal assembly
and include an order marked „Repair or Replace.“ A signed certificate of decontamination must be attached. A Material Safety Data Sheet (MSDS) must be enclosed for
any product that came in contact with the seal. The seal assembly will be inspected
and, if repairable, it will be rebuilt, tested, and returned.
10.0 System Check
System check of the MSS may take place during machine breakdown only.
Ensure accessibility for the necessary range to operate the machine or for maintenance work at the MSS.
10.1
System checks of the MSS extend to the monitoring of the set values for pressure,
temperature and barrier or quench fluid consumption.
10.2 Removing the
MSS for an inspection becomes necessary when:
• The specified leakage values are exceeded and, after enquiries at FLOWSERVE,
no other written agreement ensues.
!
Examination of the leakage rates should take place at least once during
24 operating hours!
• After an installation period of more than three years.
• An inspection of the mixer is due, and a similarly long operating period is
expected thereafter..
11.0 Maintenance, Replacement Parts; Aftersales Service
11.1 Repairs must be conducted by FLOWSERVE within the guarantee period. In special
cases (emergencies) competent personnel may replace individual parts in situ after
consultation with FLOWSERVE.
!
Decontaminate the MIXERPAC and return it to a FLOWSERVE authorized repair
facility with an order marked „Repair“ or „Replace“.
A signed certificate of decontamination must be attached. A Material Safety Data
Sheet (MSDS) must be enclosed for any product that came in contact with the
18
MIXERPAC. The MIXERPAC will be inspected and if repairable, a quotation will be
made for restoring it to ist original condition. Upon acceptance of the quotation, the
MIXERPAC will be rebuilt, tested and returned to sender.
11.2
!
Replacement parts are to be ordered with the ID numbers given in the annexed
parts list.
11.3
!
A warranty is given only for the original replacement parts delivered by
FLOWSERVE. All parts of the MIXERPAC meet with high-precision dimensional
tolerances and are matched to one another. Only a part replacement as given in
the FLOWSERVE quality assurance documentation ensures smooth operation.
11.4
!
We expressly point out that original replacement parts and accessories not delivered by FLOWSERVE are not tested or released by FLOWSERVE. Under certain
circumstances therefore, using and / or installing such products may impair the
properties given in the MIXERPAC design and hence undermine the active and /
or passive safety. All incidents of damage incurred through the use of nonoriginal replacement parts or appurtenances render all liabilities and warranties on
the part of FLOWSERVE void.
Please note that special manufacturing and delivery specifications exist for all parts
of our products manufactured or procured by ourselves, and the replacement parts
are always offered in accordance with the latest technology and with the most current regulations and laws.
11.5 This product is a precision sealing device. The design and dimension tolerances are
critical to seal performance. Only parts supplied by Flowserve should be used to
repair a seal. To order replacement parts, refer to the part code and B/M number. A
spare backup seal should be stocked to reduce re-pair time:
2 Insert S Set Screws
P Shaft Packing C Springs
G, G1 Gaskets 3 Seal Ring
6 O-ring P1, P2 Back up Rings
K, K1, K2, K3 Screws
12.0 Annex
12.1 Assembly drawing, parts list.
44388 Dortmund, 01-17-2010 LI Rev. 0
-21-
FIS130eng Rev 07/10 Printed in Europe
flowserve.com
© Copyright 2010 Flowserve Corporation
TO REORDER REFER TO
B/M or Assy. #
Order #
Seal Type
To find your local Flowserve representative
and find out more about Flowserve Corporation,
visit www.flowserve.com
Flowserve Corporation has established industry leadership in the design and manufacture of its products. When
properly selected, this Flowserve product is designed to perform its intended function safely during its useful life.
However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used
in numerous applications under a wide variety of industrial service conditions. Although Flowserve can provide
general guidelines, it cannot provide specific data and warnings for all possible applications. The purchaser/user
must therefore assume the ultimate responsibility for the proper sizing and selection, installation, running, and
maintenance of Flowserve products. The purchaser/user should read and understand the Installation Instructions
included with the product, and train its employees and contractors in the safe use of Flowserve products in
connection with the specific application.
While the information and specifications contained in this literature are believed to be accurate, they are supplied
for informative purposes only and should not be considered certified or as a guarantee of satisfactory results by
reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, express or implied,
regarding any matter with respect to this product. Because Flowserve is continually improving and upgrading its
product design, the specifications, dimensions and information contained herein are subject to change without
notice. Should any question arise concerning these provisions, the purchaser/user should contact Flowserve
Corporation at any one of its worldwide operations or offices.
USA and Canada
Kalamazoo, Michigan USA
Telephone: 1 269 381 2650
Telefax: 1 269 382 8726
Europe, Middle East, Africa
Dortmund, Germany
Phone: +49 231 69640
Telefax: +49 231 6964-248
Asia Pacific
Singapore
Telephone: 65 6544 6800
Telefax: 65 6214 0541
Latin America
Mexico City, Mexico
Telephone: 52 55 5567 7170
Telefax: 52 55 5567 4224
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