Flowserve SLC User Manual
Installation
Instructions
Interseal SLC Series
Self contained single cartridge
heavy duty slurry seal
TM
Experience In Motion
1 General Seal Installation Instructions
The following instructions are designed to simplify the installation of a typical SLC
Cartridge Slurry Seal. See Figure 1. By reading this manual and following its guidelines, seal performance can be improved by reducing the chances of premature failure
attributed 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. If any problems arise during
installation, Do Not Try to Force Anything.
These instructions are written for trained, experienced technicians who are familiar
with the basic principles and tools involved in the installation, care and service of
mechanical seals.
A complete reading of these instructions by personnel in contact with the equipment
is essential to safety. Incorrect installation, operation or maintenance can result in
personal injury or death to personnel and damage to the equipment.
For special problems encountered during installation, contact your nearest Flowserve
Sales and Service Representative or Authorized Distributor.
Typical SLC Cartridge Figure 1
Pin Sleeve
Stationary Face
Rotating Face
Rotating Face Body
Cone Spring
Sleeve Gasket
Quench Option
Shown in Lower View
U-Cup
Drive Washer
Flange/Gland
Flange/Gland Gasket
2
Spacer Ring (option)
Flange/Gland Bolt
Setting/Centering Plate
Snap Ring
Sleeve
Split Clamp/Drive Collar
Lip Seal
Snap Ring
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.
2 Equipment Preparation for Mechanical Seal Installation
2.1 Follow plant safety regulations prior to equipment disassembly:
• lock out motor/driver and valves.
• wear designated personal safety equipment.
• relieve any pressure in the system.
• consult plant MSDS les for hazardous material regulations.
• vent and drain equipment before any work is performed in the
eld or removed to a maintenance facility.
2.2 Disassemble and clean all equipment to allow access to seal installation area.
2.3 When converting from a packed stufng box, replacement equipment parts may
be required such as taper bore covers, liners, and high efciency impellers.
These items should specically be designed for use with mechanical seals.
3 Equipment Checks
3.1 Radial and thrust bearings should be in new condition. If not, new ones should
be installed into the equipment.
3.2 The saddle ts of the bearing assembly should be checked for abnormal wear
and reconditioned if worn.
3.3 Ensure that all t locations on the pedestal and adapter are clean and free from
burrs.
3.4 Ensure that the bearing assembly is mounted correctly (central and square) to
the pump pedestal and securely fastened.
3.5 Clean dried product, rust, and oils from the pump shaft or shaft sleeve. Remove
all burrs and sharp edges from the shaft and shaft sleeve including sharp edges
of keyways and threads.
3.6 Replace worn shaft or shaft sleeve. Ensure that the shaft or shaft sleeve has a
1.57 mm (0.062 inch) x 30 degree chamber on the leading edge to help prevent
O-ring damage during seal installation.
3.7 The axial end oat of the equipment shaft must be set to the manufacturer’s
specications. As a guide 0.05 mm (0.002 inch) per inch of shaft diameter to a
maximum of 0.40 mm (0.016 inch) FIM. See Figure 2. Addition of shims or ma-
chining adjustments to the bearing end cover may be required to limit end play.
Check Axial Shaft Travel Figure 2
0.38 mm (0.015 inch) FIM (TIR) Maximum
Acceptable Axial Movement
3
3.8 Shaft radial run out should be less than 0.13 mm (0.005 inch) FIM (TIR).
See Figure 3. Turn shaft 360° and observe the movement. Excessive
movement may indicate a bent or warped shaft that needs replacement.
Check Radial Shaft Deection Figure 3
0.13 mm (0.005 inch) FIM (TIR)
Maximum Acceptable Radial Run Out
3.9 Make sure all seal housing bores, mounting surfaces, and uid line connections
are clean and free of burrs and sharp edges that might damage secondary sealing elements (O-rings, V-rings, or gaskets).
4 Wet (impeller side) Cartridge Installation
This section describes the installation of the seal cartridge from the wet or impeller
side of the equipment case. If your cartridge is designed to install from the dry or bearing side of the equipment case, skip to section 5.
4.1 Bolt seal adapter plate to equipment case/pedestal (hand tighten only).
4.2 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 0.25 mm (0.010 inch) FIM (TIR). See Figure 4. Seal life can vary with
improper alignment; poor shaft alignment will yield poor seal life.
Center Adapter Plate to Shaft Figure 4
Centering Jig
Adapter to be Concentric with Shaft
within 0.25 mm (0.010 inch) FIM (TIR)
4
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