Chesterton 170L Installation guide

170L Slurry Cartridge
Single Seal—Wet Version
Designed to fit Weir™AH series pump
Installation, Operation and Rebuild Instruction
TABLE OF CONTENTS
INSTALLATION, OPERATION and
MAINTENANCE INSTRUCTIONS
Seal Data Reference
(from Box Label)
ITEM #
SEAL
(example 170L 100mm SSC/TC)
INSTALLATION DATE
1.0 Cautions ..............................................................2
2.0 Transport and Storage .........................................2
3.0 Description...........................................................2
3.1 Parts Identification ..................................................................2
3.2 Operating Parameters.............................................................. 3
3.3 Intended Use........................................................................... 3
3.4 Pump Frame Size Availability Data.......................................... 4
3.5 Clamped Gland Configuration ................................................5
3.6 Bolted Gland Configuration.....................................................5
4.0 Preparation for Installation ....................................6
4.1 Equipment...............................................................................6
4.2 Mechanical Seal......................................................................7
5.0 Seal Installation ....................................................7
6.0 Commissioning / Equipment
Start-up................................................................................... 8
7.0 Decommissioning / Equipment
Shut Down ..............................................................................8
8.0 Spare Parts ..........................................................8
9.0 Seal Maintenance and Repair ...............................8
9.1 Returning Seals for Repair....................................................... 8
9.2 Seal Maintenance ................................................................... 9

2
These instructions are general in nature. It is assumed
that the installer is familiar with seals and certainly with
the requirements of their plant for the successful use of
mechanical seals. If in doubt, get assistance from someone
in the plant who is familiar with seals or delay the installation
until a seal representative is available. All necessary auxiliary
arrangements for successful operation (heating, cooling,
flushing) as well as safety devices must be employed. These
decisions are to be made by the user. The decision to use this
seal or any other Chesterton seal in a particular service is the
customer’s responsibility.
Transport and store seals in their original packaging.
Mechanical seals contain components that may be subject to
alteration and ageing. It is therefore important to observe the
following conditions for storage:
• Dust free environment
Do not touch the mechanical seal for any reason while it is
operating. Lockout or uncouple the driver prior to personnel
contact with the seal. Do not touch the mechanical seal
while it is in contact with hot or cold fluids. Ensure that all the
mechanical seal materials are compatible with the process
fluid. This will prevent possible personal injury.
• Moderately ventilated at room temperature
• Avoid exposure to direct sunlight and heat
• For elastomers, storage conditions according to ISO 2230
should be observed
1.0 CAUTIONS
2.0 TRANSPORT AND STORAGE
KEY
1 – Stationary Seal Ring
2 – Rotary Seal Ring
3 – Rotary Gasket
4 – Sleeve Assembly
5 – Lock Ring Assembly
6 – Pusher
7 – Gland
8 – Centering Clip
9 – Centering Clip Spacer
10 – Hex Screw
11 – Spring
12 – Shoulder Screw
13 – Washer
14 – Shaft O-Ring
15 – Rotary O-Ring
16 – Stationary O-Ring
17 – Pipe Plug
18 – Dog Point Set Screw
19 – TORX Socket Head Cap Screw
20 – SpiralTrac® (optional)
21 – Gland O-Ring
22 – Eye Bolts (not shown)
3.0 DESCRIPTION
3.1 Parts Identification
3.1.1 Clamped Gland Configuration

3
3.0 DESCRIPTION cont.
3.1 Parts Identification
3.1.2 Bolted Gland Configuration
KEY
1 – Stationary Seal Ring
2 – Rotary Seal Ring
3 – Rotary Gasket
4 – Sleeve Assembly
5 – Lock Ring Assembly
6 – Pusher
7 – Gland
8 – Centering Clip
9 – Centering Clip Spacer
10 – Hex Screw
11 – Spring
12 – Shoulder Screw
13 – Washer
14 – Shaft O-Ring
15 – Rotary O-Ring
16 – Stationary O-Ring
17 – Pipe Plug
18 – Dog Point Set Screw
19 – TORX Socket Head Cap Screw
20 – SpiralTrac® (Optional)

44
3.0 DESCRIPTION cont.
3.2 Operating Parameters*
3.4 Pump Frame Size Availability Data
170L Slurry Seal Wet End - Seal Assembly Availability
Weir Pump Model / Frame Shaft Size (mm)
AStandard
1.5/1 B-AH
2/1.5 B-AH 50 x
3/2 C-AH 60 x
4/3 C-AH 60 x
4/3 D-AH 85 x
6/4 D-AH 85 x
6/4 E-AH 100 x
8/6 E-AH 100 x
8/6 F-AH 130 x
10/8 ST-AH 180 x
Pressure:
60-145 mm 250 psig (17 bar g)
180-220 mm 150 psig (8 bar g)
†Seal pressure capabilities are dependent on the fluid sealed, temperature,
speed, and face combination.
Speed Limits:
60-145 mm – 20 m/s (4000 FPM)
180-220 mm – 12 m/s (2400 FPM)
Consult Seal Applications Engineering for higher applications.
Temperature Limits:
Elastomers
To 150°C (300°F) EPDM
To 205°C (400°F) FEPM, FKM
To 260°C (500°F) FFKM
Standard Materials*
All Metal Parts: 316 SS / EN 1.4401
A2205 / EN 3.017
Springs: Alloy C276 / EN 2.4819
Rotary Face: SSC, TC
Stationary Face: SSC, TC
Elastomers: EPDM, FEPM, FKM, FFKM
*Other materials available upon request.
3.3 Intended Use
The mechanical seal is specifically designed for the intended
application and is to be operated within the operating
parameters as specified. For use beyond the intended
application and/or outside the operating parameters, consult
Chesterton to confirm the suitability of the mechanical seal
prior to putting the mechanical seal in operation.

5
3.6 Bolted Gland Configuration
3.0 DESCRIPTION cont.
3.5 Clamped Gland Configuration

66
If practical, place the dial indicator tip on the end of the shaft
sleeve or on a step in the shaft to measure end play. Alternately
push and pull the shaft in the axial direction. If the bearings are
in good condition, end play should not exceed 0,13 mm (.005").
Remove all sharp corners, burrs, and scratches on the shaft,
especially in areas where the O-Ring will slide, and polish if
necessary to achieve a 0,8 micron (32 microinch) Ra finish.
Make sure the shaft or sleeve diameter is within 0,05 mm
(.002") of nominal.
Use a dial indicator to measure the shaft runout in the area
where the seal will be installed. Runout should not exceed
0,005 mm TIR per mm (.005 in per inch) of shaft diameter.
If possible, attach a base dial indicator to the shaft and rotate
both the indicator and shaft slowly while reading the runout
of the stuffing box face. Misalignment of the stuffing box face
relative to the shaft should not exceed 0,005 mm TIR per
mm (.005 in per inch) of shaft diameter. The stuffing box face
must be flat and smooth enough to seal the gland. Surface
roughness should be 3,2 microns (125 microinch) Ra maximum
for gaskets and 0,8 micron (32 microinch) Ra for O-Rings.
Steps between halves of split case pumps should be machined
flat. Make sure the stuffing box is clean and clear along its
entire length.
4.0 PREPARATION FOR INSTALLATION
4.1 Equipment
2
1
34
.005"
0,13 mm
32 µ"
0,8 µm Ra
ø
ø
200
<
<
ø
<ø
1000
ø
<
.002"
0,05 mm
±
125 µ"
3,2 µm

7
4.0 PREPARATION FOR INSTALLATION cont.
4.2 Mechanical Seal
1. CAUTION: The 1/4 dog point set screws go into the small
holes in the sleeve. Do not disengage these screws from the
sleeve when positioning the seal. Make sure all screws are
engaged in the sleeve but do not protrude into the ID bore.
Also, when repositioning or removing the seal, make sure the
centering clips and socket head cap screws are engaged.
2. Centering clips have been preset at the factory. If for
any reason you loosen or remove the centering clip cap
screw, retighten as follows prior to installing the seal on the
equipment: Tighten the cap screw finger tight. Then using
hex wrench, tighten cap screw an additional 1/8 turn. This will
approximate the 3,4 Nm (30 inch-pounds) of torque for sizes
45-60 mm (1.75" to 2 1/2"), and 4,5 Nm (40 inch-pounds) of
torque for 65-120 mm (2 5/8" to 4 3/4") set at the factory. For
sizes 25-43 mm (1" to 1.625") tighten the button head screws
to 2,3 Nm (20 inch-pounds) of torque.
5.0 SEAL INSTALLATION
1
Remove seal from packaging and
place on clean work surface.
IMPORTANT: Remove eye bolts
(if present) prior to installation.
5
Tighten lock ring bolt as specified in
Table 1.
Reassemble the equipment. Make
all necessary equipment and
impeller adjustments.
7
Turn the clips 180° from their
original position.
6
Loosen the hex head cap screws
attached to the centering clips.
4
Tighten gland bolts as specified in
Table 1 (page 8).
*Only applicable for bolted gland
configuration 85mm-180mm*
8
Retighten the cap screws (to hold
clips in place).
3a
Apply a thin film of grease (provided
with seal) on the shaft. Slide seal
onto the shaft.
3b
Reinstall Frame plate (customer
supplied).
2
Install Gland O-Ring into equipment
prior to seal installation.

8
5.0 SEAL INSTALLATION cont.
Table 1
Shaft Size Torque Value (ft-lb) Torque Value (N-m)
Gland Bolts Lock Ring Gland Bolts Lock Ring
50 mm - 6-8 - 8-11
60 mm - 6-8 - 8-11
85 mm 25-35 14-16 34-48 19-22
100 mm 40-60 28-30 54-81 38-41
130 mm 40-60 28-30 54-81 38-41
180 mm 40-60 28-30 54-81 38-41
6.0 COMMISSIONING / EQUIPMENT START-UP
1. Attach appropriate pluming/environmental controls to
the seal.
2. Take all necessary precautions and follow normal safety
procedures before starting the equipment.
Please contact Chesterton Mechanical Seal Application Engineering for assistance regarding the 170L seal.
7.0 DECOMMISSIONING / EQUIPMENT SHUT DOWN
Ensure that the equipment is electrically isolated. If the
equipment has been used on toxic or hazardous fluids, ensure
that the equipment is correctly decontaminated and made safe
prior to commencing work. Ensure that the pump is isolated
and check that the stuffing box is drained from any fluid and
pressure is fully released. Reposition centering clips prior to
removing the seal from equipment. Disassemble the seal and
remove from equipment in the reverse order from installation
instructions. Incase of disposal, ensure the local regulations
and requirements for disposal or recycling of the different
components in the seal are adhered to.
8.0 SPARE PARTS
Use only Chesterton original spare parts. Use of non-original
spare parts represents risk of failure, danger to persons/
equipment and voids the product warranty.
Spare Parts Kits can be purchased from Chesterton, referencing
the recorded seal data from cover page.
9.0 SEAL MAINTENANCE AND REPAIR
9.1 Returning Seals for Repair and Hazard Communication Requirements
Any mechanical seal returned to Chesterton that has been
in operation, must comply with our Hazard Communication
requirements. Please go to our web page at
www.chesterton.com/Mechanical_Seal_Returns to obtain
information required for returning seals for repair or seal analysis.

9.0 SEAL MAINTENANCE AND REPAIR cont.
4
7
1
5
8
2
Remove dog point set screws and TORX screw
from lock ring and discard.
Invert gland assembly and remove stationary
seal ring and discard.
Prepare a clean work surface for seal
disassembly and rebuild.
Remove lock ring from sleeve.
Remove old pipe plug if it is still installed and
discard.
Remove face gasket O-Ring (not all sizes)
discard.
Separate gland assembly from sleeve
assembly.
Disengage centering clips and remove screws,
clips, and bushings from pusher and discard.
6
3
9
Invert gland assembly. Remove shoulder
screws and discard. Lift pusher from gland
assembly.
9.2 Seal Maintenance
A correctly installed and operated mechanical seal requires little
maintenance. It is recommended to periodically check the seal for
leakage. Wearing components of a mechanical seal such as seal
faces, O-Ring, etc., require replacement over time. While a seal is
installed and operating, maintenance is not possible.
Therefore it is recommended that a spare seal unit or a spare
parts kit be held in stock to allow quick repair.
1. The following items, in addition to hex wrenches, grease and
cleaning wipes, will be required for rebuild:
• Adjustable wrench
• Flat ruler or straight edge
2. Note the condition of the parts, including elastomer surfaces
and gland springs. Analyze the cause of failure and correct the
problem, if possible, before reinstalling the seal.
3. Clean all elastomer and gasket surfaces with cleaning solvent.
9

10
16
Fold the cushion tabs into the slots and press
them in against the drive slot edge with a
straight edged tool or ruler.
15
Place the rotary seal face on a dry clean
cloth face side down to avoid scratching or
damaging the face. Peel the adhesive backing
from the rotary cushions. Align scored edges
with edges of slots and press to ensure
adhesion to that surface.
9.0 SEAL MAINTENANCE AND REPAIR cont.
Remove rotary seal ring from sleeve and
discard.
11
18
Apply a thin film of grease to the shaft O-Ring
and install in the sleeve inside diameter groove.
Apply a thin film of grease to the rotary O-Ring
and install in the rotary seal face outside
diameter groove
17
12
Remove shaft O-Ring from sleeve inside
diameter and discard.
13
Clean all metal components with approved
solvent.
Remove spare parts kit components from
packaging and place on a clean work surface.
NOTE: Leave the two largest O-Rings
packaged for size identification.
14
10
Remove O-Ring from gland inside diameter
and discard.
20
Apply a thin film of the grease supplied to the
gland O-Ring and install in the gland inside
diameter groove.
19
Slide rotary seal face onto sleeve. Align drive slots with drive lugs in sleeve and press evenly on the
face to ensure proper spacing and that the seal face is seated. Wipe the seal face surface with a
clean soft cloth.
Not fully seated Fully seated

11
9.0 SEAL MAINTENANCE AND REPAIR cont.
26
Flip the gland and Insert the stationary seal
face into the gland (as shown), carefully
aligning the drive slots with the lugs in the
gland. Press evenly on the face to ensure that
the seal face is fully seated. Clean the face
surface with a clean cloth.
25
Wrap threads of pipe plug 1 ½ wraps with
Chesterton GoldEnd™ tape (or equivalent)
Insert pipe plugs (2X) into gland and tighten to
recommended torque value.
Slide the lock ring over the sleeve. Align dog
point screw holes in the lock ring with holes in
the sleeve. Tighten dog point screws until flush
with inside diameter of sleeve.
29
Tighten centering clip hex screws.
31
30
Press down on gland assembly and rotate
centering clips to engage under the lock ring.
24
Insert shoulder screws with washers into
springs and install in pusher holes. Tighten
shoulder screws evenly in a crisscross pattern
and until they bottom out.
Flip the gland assembly and carefully slide the
gland over the sleeve until the seal faces are
mated.
Install dog point and TORX screws into lock
ring.
Insert hex head screws into centering clips;
insert into the bushings and tighten finger-tight.
Install bushings in 4 large through holes.Align through holes in pusher with threaded
holes in gland. NOTE (not applicable for all
sizes): Align scalloped edge of pusher with NPT
flush port in gland as shown in inset.
232221
27 28
32
Install eye bolts for ease of transportation.
IMPORTANT: Remove eye bolts prior to seal
installation.

FORM NO. EN36492 REV 2 1/18
860 Salem Street
Groveland, MA 01834 USA
Telephone: [phone] Fax: [phone]
www.chesterton.com
© 2018 A.W. Chesterton Company.
® Registered trademark owned by A.W. Chesterton Company
in USA and other countries.
Chesterton ISO certificates available on www.chesterton.com/corporate/iso
DISTRIBUTED BY:
45
34
Seal is now ready for installation.
Install gland O-Ring prior to seal installation
(does not apply to all sizes).
33