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SLM-6200
Self contained cartridge
medium duty slurry seal
Installation
Instructions
Experience In Motion
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1 Cartridge Installation Instructions
The following instruction manual is designed to simplify the installation of the SLM-6200
slurry seal. The SLM-6200 is a dual (pressurized double) seal with a circulating device and
2 “barrier” uid connections.
By reading this manual and following its guidelines, seal performance can be improved
by eliminating the chances of premature failure due to improper installation. In addition to
these instructions, consult the seal assembly drawing included for your specic seal design,
materials of construction, critical dimensions, and any auxiliary piping connections.
As you go through this manual you will nd some of the instructions referenced with gure
numbers. These illustrations are provided to help you visualize what the instruction is trying
to explain. If these instructions are followed faithfully, the seal installation will be successful,
and maintenance personnel will understand the proper procedures to follow when pump
adjustment is necessary.
For special problems encountered during installation, contact your nearest Flowserve Sales
and Service Representative or Authorized Distributor.
Note: The SLM-6200 has been designed to leak water barrier uid into the process at
4 liters (1 gallon) per day. Barrier uid must be compatable and able to be relled while
pressurized. If another barrier uid is used leakage will increase.
Typical Dual SLM-6200 Cartridge Seal Figure 1
Inner Side:
Gland Gasket
Spring
Stator O-ring
Stator
Rotor
Rotor O-ring
Sleeve
Rotor Pin
Set Screw
Outer Side:
Retaining Screw
Gland
Rotor
Centering Plate
Stator O-ring
Stator
Sleeve Collar
Collar Snap Ring
Stator Spring
Sleeve O-ring
Rotor Snap Ring
Stator Pin
Gland Gasket
Gland
2
Spring Retainer Screw
Spring Retainer
Rotor Snap Ring
Rotor Pin
Sleeve O-ring
Rotor O-ring
Circulating Feature
The images of parts shown in these instructions may differ visually from the actual
parts due to manufacturing processes that do not affect the part function or quality.
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2 Recommendations
To ensure that your SLM-6200 Mechanical Seal will provide you with the longest possible
life, we recommend the following:
2.1 New radial and thrust bearings be installed in the pump.
2.2 The saddle ts of the bearing assembly should not be worn.
2.3 The axial end oat of the pump shaft must not exceed 0.25 mm (0.010 inch). See
Figure 2.
Check Axial Shaft Travel Figure 2
0.25 mm (0.010 inch) Maximum
Acceptable Axial Movement
2.4 Shaft radial runout should be less than 0.0005 mm per mm (0.0005 inch
per inch) of shaft/sleeve diameter. See Figure 3. Turn the shaft through
360° and observe the range of indicator movement.
Check Radial Shaft Runout Figure 3
Maximum Acceptable Radial
Runout 0.0005 mm per mm
(0.0005 inch per inch) of shaft
diameter
2.5 The shaft should deect no more than 0.30 mm (0.012 inch) at the seal chamber
face. See Figure 4.
Check Radial Shaft Deection Figure 4
Shaft should Deect no more than
0.30 mm (0.012 inch)
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2.6 Ensure that the shaft or shaft sleeve has a 1.6 mm (0.06 inch) x 30° chamfer on the
leading edge to prevent O-ring damage at seal installation.
2.7 Hardened shaft sleeves must not be used when cartridge sleeve locking is
accomplished by set screws bearing directly into the shaft sleeve. Any of the sleeve
collars that clamp the cartridge sleeve to the shaft sleeve may be used on hardened
shaft sleeves.
3 General Instructions
3.1 Ensure that the bearing assembly is mounted correctly (central and square) to the
pump pedestal and securely fastened.
3.2 Ensure that all t locations on the pedestal are clean and free of burrs.
3.3 Clean the pump shaft/sleeve surface, making sure it is clean of product and rust and
has no burrs.
3.4 If the pump design requires it, bolt seal adapter plate to equipment case/pedestal
(hand tighten only).
3.5 Locate the seal t of the adapter to the shaft by use of a dial indicator or centering jig.
The equipment shaft must be concentric to the seal adapter bore to within 0.38 mm
(0.015 inch). See Figure 5.
Center Adapter Plate to Shaft Figure 5
Centering Jig
Adapter to be Concentric
with Shaft within 0.38 mm
(0.015 inch)
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3.6 For adapters provided with a centering jig, simply insert the centering jig into the
adapter and tighten adapter bolts, alternately adjusting the cover location until the
centering jig can be removed by hand.
3.7 Apply a light coat of O-ring lubricant to the seal sleeve O-ring. (Silicone grease must
be used with EPDM gaskets.)
Warning: Do not apply anti-seize or other lubrication to the pump shaft/sleeve. Keep
the shaft/sleeve clean and dry. The use of lubricants will cause improper clamping
pressure by the clamp collar.
3.8 Orient the barrier inlet and outlet ports as illustrated. See Figure 6. If the ports are not
located 180° apart, position the outlet port at top dead center or as near to that as
possible.
Barrier Port Orientation Figure 6
Barrier Outlet
Barrier Inlet
4 Wet-Side (Impeller-Side) Installation
The following steps describe installation of the seal cartridge mounted on the wet, or
impeller, side of the equipment case. If your cartridge is designed to mount on the dry, or
bearing, side of the equipment case, skip to section 5.
4.1 Seal chamber face runout (perpendicularity) should be less than 0.001 mm per mm
(0.001 inch per inch) of indicated diameter. See Figure 7.
Check Seal Chamber Face Runout Figure 7
Maximum Acceptable
Runout 0.001 mm per mm
(0.001inch per inch)
of indicated diameter
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4.2 Seal chamber concentricity should be less than 0.38 mm (0.015 inch). See Figure 8.
Seal life varies with alignment. Poor shaft alignment will reduce seal life.
Check Seal Chamber Concentricity Figure 8
0.38 mm (0.015 inch) Maximum Seal
Chamber Concentricity Runout
4.3 It is advisable to hold the inner gland gasket in place in the gland groove with contact
adhesive or vacuum grease (in spots only).
With the seal clamp collar facing toward the bearing assembly, slide the complete
cartridge over the pump shaft/sleeve and push the assembly back into the pump
case. See Figure 9.
Warning: Do not hammer on or push against the cartridge sleeve.
Do not secure the gland retaining screws to the equipment casing at this time.
Inserting Cartridge Figure 9
Push on Gland to Slide
the Seal Over the Shaft
Do Not Hammer or
Push on Seal Sleeve
4.4 If the seal is mounted directly on the shaft, rather than on the equipment sleeve,
install the impeller spacer sleeve (possibly modied).
4.5 Install the impeller and suction cover.
4.6 Make any necessary impeller adjustments.
Warning: Loosen the bearing assembly and drive belts only enough to make the
adjustments. Fully retighten the bearing assembly and belts after adjustment.
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4.7 Check the orientation of the gland ports and reposition as necessary. See Figure 6.
4.8 Insert the retaining screws through the rear face of the pump case and screw into the
seal gland. Tighten the retaining screws evenly to pull the seal into the pump case.
See Figure 10.
Cartridge in Place (Wet Side) Figure 10
5 Dry-Side (Bearing-Side) Installation
The following steps describe installation of the seal cartridge mounted on the dry, or
bearing side of the equipment case. If your cartridge is designed to mount on the wet, or
impeller side of the equipment case, refer to section 4. If you have completed section 4,
skip to section 6.
5.1 Seal chamber concentricity should be less than 0.38 mm (0.015 inch). Poor shaft
alignment can reduce seal life. See Figure 11.
Check Seal Chamber Concentricity Figure 11
0.38 mm (0.015 inch)
Maximum Seal Chamber
Concentricity Runout
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5.2 Seal mounting runout (perpendicularity) should be less than 0.001 mm per mm
(0.001 inch per inch) of indicated diameter. See Figure 12. When the equipment case
and shaft are properly aligned, secure the case in place.
Check Seal Chamber Face Runout Figure 12
Maximum Acceptable Runout
0.001 mm per mm (0.001 inch
per inch) of indicated diameter
5.3 With the seal clamp collar facing toward the bearing assembly, slide the complete
cartridge over the pump shaft/sleeve and push back toward the bearing housing. See
Figure 13. If the gland screws are too long to insert with the cartridge in place, insert
them through the gland before sliding the cartridge fully onto the shaft.
Inserting Cartridge Figure 13
Push on Gland to Slide
the Seal Over the Shaft
Do Not Hammer or
Push on Seal Sleeve
5.4 If the seal is mounted directly on the shaft, rather than on the equipment sleeve,
install the impeller spacer sleeve (possibly modied).
5.5 Position and lightly secure the equipment casing in place. Do not secure the gland
retaining screws to the equipment casing at this time.
5.6 Check the orientation of the gland ports and reposition as necessary. See Figure 6.
5.7 Install the impeller and suction cover.
5.8 Make any necessary impeller adjustments.
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5.9 Slide the seal cartridge up to the equipment case. Insert the gland retaining bolts
through the gland holes and screw into the threaded holes on the face of the
equipment case. Tighten the retaining bolts evenly in opposing pairs. See Figure 14.
Cartridge in Place (Dry Side) Figure 14
6 Completing Installation
6.1 Evenly tighten the Socket Head Cap Screws of the 2-piece split clamp collar, the Hex
Head Cap Screws of the 3-piece shrink disk collar, or the Set Screws of the 1-piece
sleeve collar to the proper torque values listed below.
TORQUE VALUES
N-m
(ft-lbs)
Split Clamp Shrink Disk Set Screw Set Screw Penetrating
Clamp Clamping (Cup Point)
(Dog Point)
Fastener Alloy Steel Alloy Steel Alloy Steel Stainless Alloy
Size Steel Steel
1/4” 14-16 5-8 9-11
(10-12) (4-6) (7-8)
5/16” 33-35 27-30 14-16 18-20
(24-26) (20-22) (10-12) (13-15)
3/8” 54-61 33-37 24-27 30-34
(40-45) (24-27) (18-20) (22-25)
1/2” 122-136 68-75 54-57 81-84
(90-100) (50-55) (40-42) (60-62)
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6.2 Remove the setting plate screws. With a screwdriver, pry the setting plates clear of
the gland and remove them. Keep the setting plates and screws with the seal at all
times. See Figure 15.
Setting Plate Removal Figure 15
Centering/setting plate shown in the
installed position for shipping, seal
installation and maintenance.
A screwdriver is used to lever
the centering/setting plate out.
Centering/Setting plate shown in
the stored position for equipment
operation.
7 Barrier Fluid Piping Plans
7.1 Typical installation for a Plan 54 support system, pressurized water barrier uid
circulation by external system. See Figure 16.
See Flowserve Piping Plan Guide FTA160 or your local Flowserve representative for
best practice guidelines for installation of Plans 53A, 53B or 53C.
Note: The SLM-6200 has been designed to leak water barrier uid into the process
at 4 liters (1 gallon) per day. Barrier uid must be compatable and able to be relled
while pressurized. If another barrier uid is used leakage will increase.
Plan 54 Figure 16
BO
seal
end view
BI
barrier outlet
barrier inlet
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7.2 Connect the seal gland barrier outlet (BO) port to the return side of the external
system. 3/4” tubing is recommended for the seal circulation piping on both outlet and
inlet runs. Piping runs should be smooth, with a minimum number of turns. Turns
should be accomplished by large radius bends rather than elbow ttings.
7.3 Connect the seal gland barrier inlet (BI) port to the supply side external system.
7.4 Connect a regulated pressure source and and pressure gages to monitor the barrier
pressure. Barrier uid temperature must be kept below 79°C (175°F).
7.5 Your SLM-6200 Mechanical Seal is now ready for operation.
Warning: To ensure that the mechanical seal does not run dry, leave motor v-belts or
drive coupling off the pump until the motor has been tested for rotation.
Note: For any subsequent impeller or bearing adjustment, reverse steps 6.1, and 6.2.
If any problems arise during installation, Do not try to force anything, contact your
nearest Flowserve Sales and Service Representative or Authorized Distributor.
8 Start Up and Shut Down Procedures for the SLM-6200
Slurry Seal
The SLM-6200 seal incorporates its own operating environment. To insure the proper
conditions in this environment, observe the following procedures for pump operation:
8.1 Pump Start-Up
8.1.1 Pressurize the water barrier uid system to 2 bar (30 psi) above the
maximum expected seal chamber pressure and be sure it is owing.
8.1.2 Open the valve on the suction line to ensure that the pump is fully ooded
with product.
8.1.3 A pump ooded with liquid must be ensured, before starting. If possible, open
washout/bleed venting valve to release any air that may be trapped in the
piping. Close the valve after a steady stream of liquid ows from it. If little or
no liquid appears, do not start the pump. This means that part of the piping
system is blocked with product.
8.1.4 Partially open the discharge valve to ensure that water hammer or cavitation
does not occur at start-up.
8.1.5 After start up, slowly open the discharge valve. This will keep a false/articial
head/back-pressure on the pump until the line lls.
8.2 Pump Shut-Down
8.2.1 Stop the pump.
8.2.2 Close the discharge valve.
8.2.3 Close the suction valve.
8.2.4 Before depressurizing the water barrier system, drain all product from the
pump seal chamber or ush with clean water or process uid to prevent
solids in the slurry (either free solids or dissolved solids that will precipitate
out when temperature is reduced during standby) from settling in the seal
chamber or volute. This also prevents product from contaminating the barrier
system when barrier pressure is released.
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TO REORDER REFER TO
flowserve.com
B/M #
F.O
.
9 General Operation
Pressure must be maintained on the barrier uid above product-side pressure at all times
whenever product will be present in the seal chamber. If the barrier uid ever becomes
contaminated with product, the barrier system must be ushed and cleaned.
10 Repair
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 repair time.
When seals are returned to Flowserve for repair, decontaminate the seal assembly and
include an order marked "Repair or Replace." A signed certicate 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.
For technical assistance or additional seal sizes and conditions not listed, contact your local
Flowserve Sales and Service Representative or Authorized Distributor.
FIS159eng REV 7/13 Printed in USA
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, operation, 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.
© 2013 Flowserve Corporation
USA and Canada
Kalamazoo, Michigan USA
Telephone: 1 269 381 2650
Telefax: 1 269 382 8726
Europe, Middle East, Africa
Roosendaal, the Netherlands
Telephone: 31 165 581400
Telefax: 31 165 554590
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Singapore
Telephone: 65 6544 6800
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Telephone: 52 55 5567 7170
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