Goulds Pumps 3171 User Manual

Goulds Pumps

Installation, Operation, and
Maintenance Manual

Model 3171

Table of Contents

Introduction and Safety...................................................................................................................................................3

Introduction.......................................................................................................................................................................3

Inspect the package........................................................................................................................................................3

Inspect the unit...............................................................................................................................................................3

Product warranty............................................................................................................................................................3

Safety...................................................................................................................................................................................4

Safety message levels.....................................................................................................................................................4

Environmental safety.....................................................................................................................................................5

User health and safety...................................................................................................................................................5

Safety regulations for Ex-approved products in potentially explosive atmospheres...........................................7

Transportation and Storage............................................................................................................................................9

Receive the unit..................................................................................................................................................................9

Unpack the unit.................................................................................................................................................................9

Pump handling...................................................................................................................................................................9

Lifting methods..............................................................................................................................................................9

Pump storage requirements...........................................................................................................................................10

Prepare the pump for long-term storage.................................................................................................................11

Table of Contents

Product Description........................................................................................................................................................12

General description.........................................................................................................................................................12

Nameplate information..................................................................................................................................................13

Permissible temperatures...............................................................................................................................................14

Installation.........................................................................................................................................................................16

Preinstallation...................................................................................................................................................................16

Inspect the pump.........................................................................................................................................................16

Pump location guidelines............................................................................................................................................16

Concrete foundation requirements...........................................................................................................................17

Support plate installation...............................................................................................................................................18

Install the support plate with a pit cover..................................................................................................................18

Install the support plate without a pit cover............................................................................................................18

Piping checklists..............................................................................................................................................................19

General piping checklist..............................................................................................................................................19

Suction piping for optional dry pit, outside tank mount, and tailpipe applications..........................................20

Steam lines.....................................................................................................................................................................21

Final piping checklist...................................................................................................................................................22

Stuffing box installation.................................................................................................................................................22

Install the packed stuffing box...................................................................................................................................23

Install the pump, driver, and coupling.........................................................................................................................23

Motor installation and coupling alignment.................................................................................................................23

Install the motor...........................................................................................................................................................23

Alignment checks.........................................................................................................................................................23

Permitted indicator values for alignment checks....................................................................................................24

Alignment measurement guidelines..........................................................................................................................24

Attach the dial indicators for alignment...................................................................................................................24

Align the flexible coupling with a straight edge......................................................................................................25

Float control installation................................................................................................................................................25

Install the Square D 9036 simplex and 9038 duplex float controls.....................................................................26

Commissioning, Startup, Operation, and Shutdown............................................................................................28

Preparation for startup...................................................................................................................................................28

Model 3171 Installation, Operation, and Maintenance Manual 1

Table of Contents

Check the rotation...........................................................................................................................................................28

Thrust bearing lubrication.............................................................................................................................................29

Flush the steady bearings............................................................................................................................................29

Sealed bearings.............................................................................................................................................................29

Lubricate the sealed bearings with grease cups.......................................................................................................30

Shaft sealing with a mechanical seal.............................................................................................................................30

Shaft sealing with a stuffing box...................................................................................................................................31

Steam jacket pumps (molten sulfur construction).....................................................................................................31

Impeller-clearance setting..............................................................................................................................................31

Pump priming..................................................................................................................................................................32

Install the coupling guard...............................................................................................................................................32

Start the pump.................................................................................................................................................................33

Pump operation precautions.........................................................................................................................................33

Shut down the pump......................................................................................................................................................34

Make the final alignment of the pump and driver......................................................................................................34

Maintenance......................................................................................................................................................................35

Maintenance schedule.....................................................................................................................................................35

Bearing maintenance.......................................................................................................................................................35

Thrust bearings............................................................................................................................................................36

Lubricate the bearings after a shutdown period......................................................................................................36

Lubricating-grease requirements...............................................................................................................................36

Steady bearings.............................................................................................................................................................37

Shaft-seal maintenance...................................................................................................................................................37

Mechanical-seal maintenance.....................................................................................................................................37

Packed stuffing-box maintenance..............................................................................................................................38

Disassembly......................................................................................................................................................................38

Disassembly precautions.............................................................................................................................................38

Tools required...............................................................................................................................................................39

Drain the pump............................................................................................................................................................39

Remove the pump from the sump............................................................................................................................39

Remove the impeller....................................................................................................................................................41

Disassemble the column.............................................................................................................................................42

Preassembly inspections.................................................................................................................................................43

Replacement guidelines...............................................................................................................................................43

Shaft replacement guidelines......................................................................................................................................43

Bearings inspection......................................................................................................................................................44

Bearing fits and tolerances..........................................................................................................................................44

Reassembly.......................................................................................................................................................................45

Assemble the column and support plate..................................................................................................................45

Assemble the rotating element...................................................................................................................................46

Assemble the column..................................................................................................................................................46

Assemble the impeller, suction cover, and strainer.................................................................................................47

Troubleshooting...............................................................................................................................................................48

Operation troubleshooting............................................................................................................................................48

Assembly troubleshooting.............................................................................................................................................49

Parts Listings and Cross-Sectional Drawings.........................................................................................................50

Dimensional drawings....................................................................................................................................................50

Parts list.............................................................................................................................................................................51

Cross-sectional diagrams................................................................................................................................................54

Local ITT Contacts.........................................................................................................................................................56

Regional offices................................................................................................................................................................56

2 Model 3171 Installation, Operation, and Maintenance Manual

Introduction and Safety

Introduction

Purpose of this manual

The purpose of this manual is to provide necessary information for:

• Installation

• Operation

• Maintenance

CAUTION:

Read this manual carefully before installing and using the product. Improper use of the product can cause

personal injury and damage to property, and may void the warranty.

NOTICE:

Save this manual for future reference, and keep it readily available at the location of the unit.

Inspect the package

1. Inspect the package for damaged or missing items upon delivery.

2. Note any damaged or missing items on the receipt and freight bill.

3. File a claim with the shipping company if anything is out of order.

If the product has been picked up at a distributor, make a claim directly to the distributor.

Introduction and Safety

Inspect the unit

1. Remove packing materials from the product.

2. Inspect the product to determine if any parts have been damaged or are missing.

3. If applicable, unfasten the product by removing any screws, bolts, or straps.

4. Contact your sales representative if anything is out of order.

Product warranty

Coverage

ITT undertakes to remedy faults in products from ITT under these conditions:

• The faults are due to defects in design, materials, or workmanship.

• The faults are reported to an ITT representative within the warranty period.

• The product is used only under the conditions described in this manual.

• The monitoring equipment incorporated in the product is correctly connected and in use.

• All service and repair work is done by ITT-authorized personnel.

• Genuine ITT parts are used.

• Only Ex-approved spare parts and accessories authorized by ITT are used in Ex-approved products.

Limitations

The warranty does not cover faults caused by these situations:

• Deficient maintenance

• Improper installation

• Modifications or changes to the product and installation made without consulting ITT

Dispose of all packing materials in accordance with local regulations.

For your personal safety, be careful when you handle nails and straps.

Model 3171 Installation, Operation, and Maintenance Manual 3

Introduction and Safety (Continued)

• Incorrectly executed repair work

• Normal wear and tear

ITT assumes no liability for these situations:

• Bodily injuries

• Material damages

• Economic losses

Warranty claim

ITT products are high-quality products with expected reliable operation and long life. However, should the

need arise for a warranty claim, then contact your ITT representative.

Safety

WARNING:

• The operator must be aware of safety precautions to prevent physical injury.

• Any pressure-containing device can explode, rupture, or discharge its contents if it is over-pressurized.
Take all necessary measures to avoid over-pressurization.

• Operating, installing, or maintaining the unit in any way that is not covered in this manual could cause
death, serious personal injury, or damage to the equipment. This includes any modification to the
equipment or use of parts not provided by ITT. If there is a question regarding the intended use of
the equipment, please contact an ITT representative before proceeding.

• Installation, Operation, and Maintenance manuals clearly identify accepted methods for disassembling
units. These methods must be adhered to. Trapped liquid can rapidly expand and result in a violent
explosion and injury. Never apply heat to impellers, propellers, or their retaining devices to aid in their
removal.

• Do not change the service application without the approval of an authorized ITT representative.

• Never operate the pump below the minimum rated flow, when dry, or without prime.

• Never operate the pump without safety devices installed.

• Never operate the pump with the discharge valve closed.

• Never operate the pump with the suction valve closed.

Safety message levels

Definitions

Safety message level Indication

A hazardous situation which, if not avoided, will

DANGER:

WARNING:

CAUTION:

4 Model 3171 Installation, Operation, and Maintenance Manual

result in death or serious injury

A hazardous situation which, if not avoided, could
result in death or serious injury

A hazardous situation which, if not avoided, could
result in minor or moderate injury

Safety message level Indication

The possibility of electrical risks if instructions are

Electrical Hazard:

not followed in a proper manner

Introduction and Safety (Continued)

NOTICE:

Environmental safety

The work area

Always keep the pump station clean to avoid and/or discover emissions.

Recycling guidelines

Always recycle according to these guidelines:

1. If the unit or parts are accepted by an authorized recycling company, then follow local recycling laws
and regulations.

2. If the unit or parts are not accepted by an authorized recycling company, then return them to the
nearest ITT representative.

Waste and emissions regulations

Observe these safety regulations regarding waste and emissions:

• Dispose appropriately of all waste.

• Handle and dispose of the pumped fluid in compliance with applicable environmental regulations.

• Clean up all spills in accordance with safety and environmental procedures.

• Report all environmental emissions to the appropriate authorities.

Reference for electrical installation

For electrical installation requirements, consult your local electric utility.

• A potential situation which, if not avoided,
could result in an undesirable result or state

• A practice not related to personal injury

User health and safety

General precautions

The product is designed for use in liquids that can be hazardous to health. Observe these rules when
working with the product:

• Make sure that all personnel who work with sewage systems are vaccinated against diseases to which
they may be exposed.

• Observe strict personal cleanliness.

Safety equipment

Use safety equipment according to the company regulations. Use this safety equipment within the work area:

• Helmet

• Safety goggles (with side shields)

• Protective shoes

• Protective gloves

• Gas mask

• Hearing protection

Model 3171 Installation, Operation, and Maintenance Manual 5

Introduction and Safety (Continued)

The work area

Observe these regulations and warnings in the work area:

• Always keep the work area clean.

• Pay attention to the risks presented by gas and vapors in the work area.

• Avoid all electrical dangers. Pay attention to the risks of electric shock or arc flash hazards.

Product and product positioning requirements

Observe these requirements for the product and the product positioning:

WARNING:

• Only use fasteners of the proper size and material.

• Replace all corroded fasteners.

• Make sure that all fasteners are properly tightened and that there are no missing fasteners.

• Never operate a pump unless safety devices are installed.

• Never operate a pump unless a coupling guard is installed.

• Never force the piping in order to make a connection with a pump.

• Never run a pump below the minimum rated flow or with any suction or discharge valve closed.

Electrical connections regulations

Electrical connections must be made by certified electricians in compliance with all international, national,
state, and local regulations.

Observe these guidelines and warnings for electrical connections:

• Make sure that the product is isolated from the power supply and cannot be energized by mistake.
This guideline also applies to the control circuit.

• Make sure that the thermal contacts are connected to a protection circuit according to the product
approvals, and that they are in use.

Precautions before work

Observe these safety precautions before you work with the product or are in connection with the product:

• Provide a suitable barrier around the work area, for example, a guard rail.

• Make sure that all safety guards are in place and secure.

• Allow all system and pump components to cool before you handle them.

• Make sure that you have a clear path of retreat.

• Make sure that the product cannot roll or fall over and injure people or damage property.

• Make sure that the lifting equipment is in good condition.

• Use a lifting harness, a safety line, and a breathing device as required.

• Make sure that the product is thoroughly clean.

• Make sure that there are no poisonous gases within the work area.

• Make sure that you have quick access to a first-aid kit.

• Disconnect and lock out power before servicing.

• Check the explosion risk before you weld or use electric hand tools.

Precautions during work

Observe these safety precautions when you work with the product or are in connection with the product:

• Never work alone.

• Always wear protective clothing and hand protection.

• Stay clear of suspended loads.

• Always lift the product by its lifting device.

• Beware of the risk of a sudden start if the product is used with an automatic level control.

• Beware of the starting jerk, which can be powerful.

• Rinse the components in water after you disassemble the pump.

6 Model 3171 Installation, Operation, and Maintenance Manual

Introduction and Safety (Continued)

Wash the skin and eyes

Do the following if chemicals or hazardous fluids have come into contact with your eyes or your skin:

If you need to wash your... Then...

Eyes

Skin

1. Hold your eyelids apart forcibly with your fingers.

2. Rinse the eyes with eyewash or running water for at least 15 minutes.

3. Seek medical attention.

1. Remove contaminated clothing.

2. Wash the skin with soap and water for at least one minute.

3. Seek medical attention, if required.

Safety regulations for Ex-approved products in potentially explosive atmospheres

Description of ATEX

The ATEX directives are a specification enforced in Europe for electrical and non-electrical equipment.
ATEX deals with the control of potentially explosive atmospheres and the standards of equipment and
protective systems used within these atmospheres. The relevance of the ATEX requirements is not limited
to Europe. You can apply these guidelines to equipment installed in any potentially explosive atmosphere.

General guidelines

ATEX compliance is only fulfilled when the pump is operated within its intended use, for example within
its intended hydraulic range. The conditions of the service must not be changed without approval of an
authorized ITT representative. When installing or maintaining ATEX-compliant pumps, follow these
guidelines:

• Always install ATEX-approved equipment in compliance with the directive and applicable standards
(IEC/EN 60079–14).

• Do not install FM-approved products in locations that are classified as hazardous in the national
electric code, ANSI/NFPA 70–2005.

WARNING:

Installation, Operation, and Maintenance manuals clearly identify accepted methods for disassembling
units. These methods must be adhered to. Trapped liquid can rapidly expand and result in a violent
explosion and injury. Never apply heat to impellers, propellers, or their retaining devices to aid in their removal.

If there are any questions regarding these requirements, the intended use, or if the equipment requires
modification, contact an ITT representative before you proceed.

Personnel requirements

ITT disclaims all responsibility for work done by untrained and unauthorized personnel.

These are the personnel requirements for Ex-approved products in potentially explosive atmospheres:

• All work on the product must be carried out by certified electricians and ITT-authorized mechanics.
Special rules apply to installations in explosive atmospheres.

• All users must know about the risks of electric current and the chemical and physical characteristics of
the gas and/or vapor present in hazardous areas.

• The maintenance operation for Ex-approved products must be made in conformity to the
international or national standards (IEC/EN 60079-17).

Product and product handling requirements

These are the product and product handling requirements for Ex-approved products in potentially
explosive atmospheres:

• Only use the product in accordance with the approved motor data stated on the nameplates.

• The Ex-approved product must never run dry during normal operation. Dry running during service
and inspection is only permitted outside the classified area.

Model 3171 Installation, Operation, and Maintenance Manual 7

Introduction and Safety (Continued)

• Never start a pump without the proper priming.

• Before you start working with the product, make sure that the product and the control panel are
isolated from the power supply and the control circuit, so they cannot be energized.

• Do not open the product while it is energized or in an explosive gas atmosphere.

• Make sure that thermal contacts are connected to a protection circuit according to the approval
classification of the product.

• Intrinsically safe circuits are normally required for the automatic level-control system by the level
regulator if mounted in zone 0.

• The yield stress of fasteners must be in accordance with the approval drawing and the product
specification.

• Make sure that the equipment is properly maintained:

• Monitor the pump components and the end temperature of the liquid.

• Maintain proper bearing lubrication.

• Do not modify the equipment without approval from an authorized ITT representative.

• Only use parts that have been provided by an authorized ITT representative.

Equipment for monitoring

For additional safety, use condition-monitoring devices. Condition-monitoring devices include but are not
limited to these devices:

• Pressure gauges

• Flow meters

• Level indicators

• Motor load readings

• Temperature detectors

• Bearing monitors

• Leak detectors

• PumpSmart control system

8 Model 3171 Installation, Operation, and Maintenance Manual

Transportation and Storage

Receive the unit

1. Inspect the package for damaged or missing items upon delivery.

2. Note any damaged or missing items on the receipt and freight bill.

3. File a claim with the shipping company if anything is out of order.

Unpack the unit

1. Remove packing materials from the unit.

Dispose of all packing materials in accordance with local regulations.

2. Inspect the unit to determine if any parts have been damaged or are missing.

3. Contact your ITT representative if anything is out of order.

Pump handling

WARNING:

• Make sure that the pump cannot roll or fall over and injure people or damage property.

• These pumps might use carbon or ceramic silicon carbide components. Do not drop the pump or
subject it to shock loads as this can damage the internal ceramic components.

Transportation and Storage

NOTICE: Use a forklift truck or an overhead crane with sufficient capacity to move the pallet with the
pump unit on top. Failure to do so can result in equipment damage.

Lifting methods

WARNING:

Use the supplied lifting lugs and suitable slings in order to lift the entire pump to a vertical position and
lower the unit into the sump. Then use the lifting lugs on the motor and a suitable sling in order to hoist
the motor into position. Use a tag line attached to the casing end in order to prevent the pump from swinging.

• Assembled units and their components are heavy. Failure to properly lift and support this equipment
can result in serious physical injury and/or equipment damage. Lift equipment only at the specifically
identified lifting points. Lifting devices such as eyebolts, slings, and spreaders must be rated, selected,
and used for the entire load being lifted.

• Crush hazard. The unit and the components can be heavy. Use proper lifting methods and wear steel­toed shoes at all times.

• Do not attach sling ropes to shaft ends.

Model 3171 Installation, Operation, and Maintenance Manual 9

Transportation and Storage (Continued)

Examples

Figure 1: Example of lifting motor properly with
lifting lugs

Figure 2: Example of lifting pump properly with
sling

Pump storage requirements

Requirements

Vertical pumps require proper preparation for storage and regular maintenance during storage. The pump
is considered in storage when it has been delivered to the job site and is awaiting installation.

For specific requirements for storing motors, gearheads, and engines, contact the equipment manufacturer.

Storage preparation

Condition Proper preparation

Indoor storage area (preferred)

Outdoor storage area (when indoor
storage is not available)

Placement of pumps and component
parts

Stacking of pumps or component parts

• Pave the area.

• Clean the area.

• Drain the area and keep it free from flooding.

• Observe all indoor storage requirements.

• Use weather-proof coverings such as flame-resistant sheeting
or tarpaulins.

• Place coverings in a manner that maximizes drainage and air
circulation.

• Tie coverings down in order to protect the pump from wind
damage.

• Place the pump on skids, pallets, or shoring higher than 6 in.
(15 cm) from the ground for good air circulation.

• Sort the parts in order to permit easy access for inspection
and/or maintenance without excessive handling.

• Make sure that racks, containers, or crates bear the full
weight of pumps or parts in order to prevent distortion.

• Keep identification markings readily visible.

• Immediately replace any cover you remove for internal access.

10 Model 3171 Installation, Operation, and Maintenance Manual

Condition Proper preparation

Rotation of the pump and bowl
assembly shaft

Controlled storage facilities

Uncontrolled storage facilities that have
uneven temperatures, higher humidity,
and/or dusty conditions)

When pump is not in regular operation

If a pump has been installed, but is not in regular operation for an extended period of time, such as during
a seasonal shutdown, then operate it for at least 15 minutes every two weeks, if possible.

Prepare the pump for long-term storage

For storage periods over six months, you must follow the pump storage requirements and this procedure:

1. Inspect the lube-oil and seal-flush piping and either fill the piping with rust-preventative oil, or recoat
the piping periodically in order to prevent corrosion.

2. Place 10 lbs (4.5 kg) of moisture-absorbing desiccant or 5.0 lbs (2.3 kg) of vapor-phase inhibitor
crystals near the center of the pump.

3. If the pump is assembled, place an additional one pound (0.5 kg) in the discharge nozzle and securely
fasten the nozzle to the discharge elbow.

4. Install a moisture indicator near the perimeter of the pump.

5. Cover the pump with black polyethylene with a minimum thickness of 6.0 mil (0.15 mm), and seal it
with tape.

6. Provide a small ventilation hole approximately 0.5 in. (12.0 mm) in diameter.

7. Provide a roof or shed shelter in order to protect the pump from direct exposure to the elements.

Transportation and Storage (Continued)

• Rotate the pump and bowl assembly shaft counterclockwise
once a month, at a minimum.

• Never leave the shaft in a previous position or in the extreme
raised or lowered lateral position.

• Make sure that the shaft rotates freely.

• Maintain an even temperature of 10°F (6°C) or higher above
the dew point.

• Keep the relative humidity to less than 50%.

• Make sure that there is little or no dust.

• Inspect the pump periodically to make sure that all
preservatives are intact.

• Seal all pipe threads and flanged pipe covers with tape.

Model 3171 Installation, Operation, and Maintenance Manual 11

Product Description

Product Description

General description

Product description

The 3171 is a vertical submerged bearing sump and process pump.

This model is based on three bearing frames with 17 hydraulic sizes. The S/ST group has identical
bearings with a slightly different shaft on the impeller end for the S and ST. The M/MT group is identical
in all aspects for the power end. However, the liquid end of the MT is common with the S group except
that the MT is modified to accept a larger shaft. There are two MT sizes that are common with the S/ST
group.

This table shows the number of hydraulic sizes available for each drive-unit size group. Note that each
pump has a choice of two different discharge pipes which results in four combinations.

Drive-unit size group Number of hydraulic sizes

S/ST 9

M/MT 8

L 2

Casing

The casing has these features:

• A tangential discharge

• Is self-venting

• Has an integral bearing retainer

• Is precision-bored in order to ensure permanent alignment between the column casing, suction cover,
and bearing

Impeller

Strainer

Discharge elbow

Column pipe

Shaft

The impeller is fully-open, keyed to the shaft, and held in place by a self-locking capscrew in order to
ensure positive locking and prevent damage from reverse rotation. Impellers are spin-balanced (single
plane) to ISO G6.3. The impeller is provided with back vanes in order to reduce the axial thrust and
prevent the entrance of solids.

The impellers on this pump do not meet the dimensional requirements for dynamic balancing.

The flat plate strainer is designed to maximize draw-down in a given sump depth. Openings are sized to
prevent the entrance of large solids that are commonly found in open sumps.

The discharge elbow is designed to allow the pump to fit into the smallest possible opening. A threaded
connection to the discharge pipe allows the pipe to be changed without removing the pump from the sump.

The column pipe has flanged connections that are machined in order to ensure true parallelism and to
maintain steady bearings concentric with the shaft.

The standard design uses a one-piece shaft in order to ensure accurate alignment. The shaft is precision­ground, polished, and straightened to keep vibration and deflection to a minimum. Standard bearing spans
keep the shaft well below first critical speed for all sizes.

12 Model 3171 Installation, Operation, and Maintenance Manual

Bearings

Seals

Motor support

Direction of rotation

Product Description (Continued)

The thrust bearing is a grease-lubed, double-row, angular contact ball bearing. The bearing is shouldered
and locked to the shaft and housing. This enables the bearing to carry all of the thrust loads and some of
the radial load. All fits are precision-machined to industry standards. The steady bearings are press fit
sleeve bearings. Fits are designed for optimum life under all operating conditions.

This pump has three seals:

Seal type Description

Upper labyrinth seal This seal is used to exclude dirt and water from the thrust bearing.

Lower grease seal This seal is used below the thrust bearing in order to contain the

grease and exclude any possible contamination.

Carbon Teflon® casing collar This seal is installed immediately behind the impeller in the casing

in order to minimize recirculation back to the sump and
maximize hydraulic efficiency.

Motor supports are cast construction and precision-machined in order to maintain proper alignment
between the motor and pump shaft with minimal shimming. Motor supports are designed for vertical C­face motors as standard. P-base supports and IEC adapters are available upon request.

The shaft rotates clockwise when you look down on the pump shaft.

Nameplate information

Important information for ordering

Every pump has a nameplate that provides information about the pump. The nameplate is located on the
motor support.

When you order spare parts, identify this pump information:

• Model

• Size

• Serial number

• Item numbers of the required parts

Refer to the nameplate on the pump casing for most of the information. See Parts List for item numbers.

Motor support nameplate

Model 3171 Installation, Operation, and Maintenance Manual 13

Product Description (Continued)

Table 1: Explanation of the nameplate

Nameplate field Explanation

MODEL Pump model

SIZE Size of the pump

S/N Serial number of the pump

STD. DIM. Standard dimension

HYDRO PRESS. PSI @
100°F

FLOW GPM Rated pump flow, in gallons per minute

R.P.M. Rated pump speed, revolutions per minute

MAX. .DES. WORKING
PRESS., PSI @°F.

HEAD FT. Rated pump head, in feet

MAT'L. Material of construction

IMP. DIA. Diameter of the impeller

CONT./ ITEM NO. Contract/item number

MAX. DIA. Maximum impeller diameter

ATEX nameplate

Hydrotest pressure in pounds per square inch at 100°F

Maximum design working pressure, pounds per square inch at °F

Nameplate field Explanation

II Group 2

2 Category 2

G/D Pump can be used when gas and dust are present

T4 Temperature class

NOTICE: Make sure that the code classifications on the pump are compatible with the specific
environment in which you plan to install the equipment. If they are not compatible, do not operate the
equipment and contact your ITT representative before you proceed.

Permissible temperatures

Permissible temperatures

Code Maximum permissible surface

temperature

T1 842°F (450°C) 700°F (372°C)
T2 572°F (300°C) 530°F (277°C)
T3 392°F (200°C) 350°F (177°C)
T4 275°F (135°C) 235°F (113°C)
T5 212°F (100°C) Option not available
T6 185°F (85°C) Option not available

Maximum permissible liquid
temperature

14 Model 3171 Installation, Operation, and Maintenance Manual

Product Description (Continued)

NOTICE:

The code classification marked on the equipment must be in accordance with the specified area where you
plan to install the equipment. If it is not, contact your ITT representative before you proceed.

Model 3171 Installation, Operation, and Maintenance Manual 15

A

Installation

Installation

Preinstallation

Precautions

WARNING:

• When installing in a potentially explosive environment, make sure that the motor is properly certified.

• You must earth (ground) all electrical equipment. This applies to the pump equipment, the driver, and
any monitoring equipment. Test the earth (ground) lead to verify that it is connected correctly.

NOTICE: Supervision by an authorized ITT representative is recommended to ensure proper
installation. Failure to do so may result in equipment damage or decreased performance.

Inspect the pump

1. Remove the plastic shipping plugs from the vent holes in the head column and the casing.

• "A" represents the location of the plugs

2. Remove all the equipment from the shipping containers.

3. Completely clean the underside of the support plate and both sides of the optional pit cover, if supplied.

4. Remove any grease from the machined surfaces.

Pump location guidelines

WARNING:

Assembled units and their components are heavy. Failure to properly lift and support this equipment can
result in serious physical injury and/or equipment damage. Lift equipment only at the specifically identified
lifting points. Lifting devices such as eyebolts, slings, and spreaders must be rated, selected, and used for
the entire load being lifted.

16 Model 3171 Installation, Operation, and Maintenance Manual

Guideline Explanation/comment

Make sure that the space around the pump is
sufficient.

If you require lifting equipment such as a hoist or
tackle, make sure that there is enough space above
the pump.

Protect the unit from weather and water damage
due to rain, flooding, and freezing temperatures.

Do not install and operate the equipment in
closed systems unless the system is constructed
with properly-sized safety devices and control
devices.

Take into consideration the occurrence of
unwanted noise and vibration.

This facilitates ventilation, inspection, maintenance,
and service.

This makes it easier to properly use the lifting
equipment.

This is applicable if nothing else is specified.

Acceptable devices:

• Pressure relief valves

• Compression tanks

• Pressure controls

• Temperature controls

• Flow controls

If the system does not include these devices, consult
the engineer or architect in charge before you operate
the pump.

The best pump location for noise and vibration
absorption is on a concrete floor with subsoil
underneath.

Installation (Continued)

Concrete foundation requirements

Requirements

Make sure that you meet these requirements when you prepare the pump foundation:

• The foundation must be able to absorb any vibration.

• The foundation must be able to form a permanent and rigid support for the pumping unit.

• The foundation must be of adequate strength to support the complete weight of the pump and driver,
plus the weight of the liquid that passes through it.

• There should be at least 0.5 in.(12.7 mm) clearance between the sides of the pump and any portion of
the pit.

Typical installation

A typical installation has these characteristics:

• Bolts with a pipe sleeve that is two and a half times the size of the bolt diameter embedded in the concrete

• Properly sized

Model 3171 Installation, Operation, and Maintenance Manual 17

1
2

3

4

5

6

Installation (Continued)

• Located in accordance with the dimensions given in the example drawing

• Enough space inside the pipe sleeves to allow the final position of the foundation bolts to align with
the holes in the sub-base flange

1. Hex nut

2. Washer

3. Support plate

4. 0.5 in. (12.5 mm) anchor bolt

5. Anchor bolt sleeve

6. Foundation (by customer)

Figure 3: Example of a typical installation

Support plate installation

Install the support plate with a pit cover

If access to the bottom of the pit cover is not possible during the installation process, you must assemble
and install the pump (without the motor), support plate, and pit cover as a unit. You must install the pit
cover perfectly level in order to make sure that the pump remains straight up and down when installed.

The vapor-proof option includes machined, gasketed fits between the support plate/pit cover and the pit
cover/foundation. You must install these gaskets in order to ensure emissions performance. Bolt the pit
cover to a metal sole plate with a machined surface in order to ensure an air tight seal.

1. Carefully lower the pit cover onto the foundation bolts.

2. Use as long a level as possible in order to level the pit cover in all directions with shims or wedges.

3. Hand tighten the anchor bolts. Check the level and re-shim if necessary.

4. Tighten all anchor bolts in a star pattern in order to avoid distorting the pit cover.

5. If access to the bottom side is possible, carefully lower the pump and support plate onto the pit cover.

6. Install all bolts and hand tighten.

7. Check the level on the support plate and re-shim if necessary.

8. Tighten all bolts in a star pattern in order to avoid distorting the support plate.

Install the support plate without a pit cover

1. Carefully lower the pump and support plate onto the foundation bolts.

2. Level the support plate in all directions using shims and wedges.

3. If you use the vapor-proof option, then perform one of these actions in order to make sure that you
have an air-tight seal:

Support plate
type

Action

Standard Insert the supplied gasket between the two flanges. Bolt the support plate to a

18 Model 3171 Installation, Operation, and Maintenance Manual

metal sole plate that has a machined surface.

Installation (Continued)

Support plate
type

Tank flange Install the supplied gasket between the two flanges. Make sure that the mating

Figure 4: Layout for a standard support plate with the vapor-proof option

4. Hand tighten the anchor bolts. Check the level and re-shim if necessary.

5. Tighten all anchor bolts in a star pattern in order to avoid distorting the support plate.

Piping checklists

General piping checklist

Precautions

Action

flange on the tank is level. Use gasket material between the flanges in order to make
minor adjustments.

Checklist

CAUTION:

• Never draw piping into place by using force at the flanged connections of the pump. This can impose
dangerous strains on the unit and cause misalignment between the pump and driver. Pipe strain
adversely affects the operation of the pump, which results in physical injury and damage to the equipment.

• Vary the capacity with the regulating valve in the discharge line. Never throttle the flow from the
suction side. This action can result in decreased performance, unexpected heat generation, and
equipment damage.

Check Explanation/comment Checked

Check that all piping is supported
independently of, and lined up
naturally with, the pump flange.

Keep the piping as short as
possible.

Check that only necessary fittings
are used.

Do not connect the piping to the
pump until:

• The grout for the baseplate
or sub-base becomes hard.

• The hold-down bolts for the
pump and the driver are
tightened.

Make sure that all the piping
joints and fittings are airtight.

This helps to prevent:

• Strain on the pump

• Misalignment between the pump and the drive unit

• Wear on the pump bearings and the coupling

• Wear on the pump bearings, seal, and shafting

This helps to minimize friction losses.

This helps to minimize friction losses.

—

This prevents air from entering the piping system or
leaks that occur during operation.

Model 3171 Installation, Operation, and Maintenance Manual 19

Installation (Continued)

Check Explanation/comment Checked

If the pump handles corrosive
fluids, make sure that the piping
allows you to flush out the liquid
before you remove the pump.

If the pump handles liquids at
elevated temperatures, make sure
that the expansion loops and
joints are properly installed.

Make sure that all piping
components, valves and fittings,
and pump branches are clean
prior to assembly.

Make sure that the isolation and
check valves are installed in the
discharge line.

Use cushioning devices. This protects the pump from surges and water hammer

Alignment criteria for pump flanges

—

This helps to prevent misalignment due to linear
expansion of the piping.

—

Locate the check valve between the isolation valve and
the pump. This will permit inspection of the check valve.
The isolation valve is required for regulation of flow, and
for inspection and maintenance of the pump. The check
valve prevents pump or seal damage due to reverse flow
through the pump when the driver is turned off.

if quick-closing valves are installed in the system.

Type Criteria

Axial The flange gasket thickness is ±0.03 in. (0.8 mm).

Parallel Align the flange to be within 0.001 in./in. to 0.03 in./in. (0.025 mm/mm to 0.8 mm/mm) of

the flange diameter.

Concentric You can easily install the flange bolts by hand.

Suction piping for optional dry pit, outside tank mount, and tailpipe applications

Checklist

Check Explanation/comment Checked

Install an elbow at the pump. Whenever possible, perform these actions:

• Use long radius elbows.

• Move the elbow further from the suction.

• Eliminate unneeded elbows.

Make sure the suction piping is a larger
diameter than the pump suction.

Install separate suction lines when more
than one pump is operating from the same
source of supply.

Make sure that the suction piping contains
no air pockets.

Make sure that the suction piping slopes
upwards toward the pump.

Make sure that all joints are air tight. —

Provide a method to prime the pump. For outside tank mount and dry pit applications,

—

—

—

—

allow the fluid level inside the tank or pit to rise
above the casing level.

In tailpipe applications, submerge the casing
before you start the pump.

20 Model 3171 Installation, Operation, and Maintenance Manual

Steam lines

Precautions

Installation (Continued)

Check Explanation/comment Checked

For outside tank mount and dry pit
applications, install an isolation valve in the
suction line at least two pipe diameters
from the suction.

Make sure that the entrance to the suction
pipe is kept adequately submerged below
the free liquid surface.

For an outside tank mount application,
make sure that a column assembly is
installed.

WARNING: Use proper safety precautions when dealing with high pressure air or fluid.

This allows the line to be closed for pump
inspection and maintenance. The isolation valve
must be kept fully open during operation.

This prevents vortices and air entrainment.

The column assembly allows the fluid that comes
through the lower bushings to flow up through the
column and back through the connection at the
top of the column back to the tank.

Connect the pipe at the top of the pump column
back to the source tank in order to prevent fluid
from entering the thrust bearing.

Checklist

Check Explanation/comment Checked

Before you install the pump,
become familiar with the location
of the steam lines.

Determine which method to use
in order to connect the steam lines.

Before you install the pump,
check the fittings for leaks. Use
plant air or high pressure water.

Provide source of steam at 35 psi
and 300°F (149°C).

After the pump is brought to
temperature for the first time,
shut down the unit temporarily
and readjust the impeller clearance.

There are three connections above the support plate:

• Two steam connections

• One condensate return connection.

The steam connections are connected to the tops of the
column and discharge jackets.

There are two methods you can use in order to connect
the steam lines:

• You can use both steam lines as input for steam
(preferred method).

• You can use one steam line as input for steam, while
the other steam line is used as a feed through to
additional pumps.

Only use this method if absolutely necessary,
because it is difficult to control the steam at
subsequent pumps.

The jackets are hydrotested by the factory at 100 psi
before shipment. However, the tube fittings can become
loose during transit.

If you use air to check for leaks, use a soap solution at
each joint in order to check for air bubbles.

Less than ideal conditions require higher pressure steam
in order to keep the correct temperature.

Refer to Impeller clearance setting in the Operations
chapter.

Model 3171 Installation, Operation, and Maintenance Manual 21

2

3

6

9

8

7

5

4

1

Installation (Continued)

Final piping checklist

Check Explanation/comment Checked

Check that the shaft rotates smoothly. Rotate the shaft by hand. Make sure there is no

Re-check the alignment to make sure that
pipe strain has not caused any
misalignment.

Stuffing box installation

This pump is a seamless design. Therefore, when temperatures exceed 180°F (82°C), you must move the
thrust bearing away from the heat source in the pump by adding the upper stuffing box. Air can then
circulate around the bearing in order to keep it cool.

The upper stuffing box is also used to minimize vapor emissions when the pump handles controlled
substances.

rubbing that can lead to excess heat generation or
sparks.

If pipe strain exists, then correct the piping.

1. Motor support

2. Upper stuffing box

3. Gasket

22 Model 3171 Installation, Operation, and Maintenance Manual

4. Discharge pipe

5. Support plate

6. Gasket

7. 3 in. (76.2 mm) NPT female connection

8. Pit cover

9. Gasket

Install the packed stuffing box

The stuffing box is packed at the factory. The packing is lubricated by a grease cup supplied with the pump.

1. Fill the grease cup with any lithium-based #2 grease.

2. Install the grease cup on the tapped opening on the stuffing box.

3. Turn the cap on the grease cup several turns in order to inject the grease into the packing.

4. Hand-tighten the gland nuts.

Install the pump, driver, and coupling

1. Mount and fasten the pump on the baseplate. Use applicable bolts.

2. Mount the driver on the baseplate. Use applicable bolts and hand tighten.

3. Install the coupling.

See the installation instructions from the coupling manufacturer.

Motor installation and coupling alignment

WARNING:

• Follow shaft alignment procedures in order to prevent catastrophic failure of drive components or
unintended contact of rotating parts. Follow the coupling installation and operation procedures from
the coupling manufacturer.

• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical injury.

Installation (Continued)

NOTICE: Proper alignment is the responsibility of the installer and the user of the unit. Check the
alignment of frame-mounted units before you operate the unit. Failure to do so can result in equipment
damage or decreased performance.

Install the motor

Use NEMA Vertical C-face motors with this pump. P-base motor adapters and IEC motor adapters are
available as options.

1. Install both coupling halves before you mount the motor.

Refer to the instructions from the coupling manufacturer.

2. Use the lifting lugs on the motor in order to carefully lower the motor onto the pump.

Make sure to align the bolt holes.

3. Before you connect the coupling, wire the motor and check the direction of rotation.

The rotation arrow is on the motor support. The correct rotation is clockwise as you look down from
the drive at the impeller.

Alignment checks

When to perform alignment checks

You must perform alignment checks under these circumstances:

• The process temperature changes.

• The piping changes.

• The pump has been serviced.

Model 3171 Installation, Operation, and Maintenance Manual 23

Installation (Continued)

Types of alignment checks

Type of check When it is used

Initial alignment (cold alignment)
check

Final alignment (hot alignment)
check

Initial alignment (cold alignment) checks

When Why

Before you grout the baseplate This ensures that alignment can be accomplished.

After you grout the baseplate This ensures that no changes have occurred during the grouting process.

After you connect the piping This ensures that pipe strains have not altered the alignment.

Final alignment (hot alignment) checks

When Why

After the first run This ensures correct alignment when both the pump and the driver

Periodically This follows the plant operating procedures.

Prior to operation when the pump and the driver are at ambient
temperature.

After operation when the pump and the driver are at operating
temperature.

If changes have occurred, you must alter the piping to remove pipe
strains on the pump flanges.

are at operating temperature.

Permitted indicator values for alignment checks

NOTICE: The specified permitted reading values are valid only at operating temperature. For cold
settings, other values are permitted. You must use the correct tolerances. Failure to do so can result in
misalignment and reduced pump reliability.

When dial indicators are used to check the final alignment, the pump and drive unit are correctly aligned
when these conditions are true:

• The total indicator runout is a maximum of 0.002 in. (0.05 mm) at operating temperature.

• The tolerance of the indicator is 0.0005 in./in. (0.0127 mm/mm) of indicator separation at operating
temperature.

Alignment measurement guidelines

Guideline Explanation

Rotate the pump coupling half and the driver coupling half
together so that the indicator rods have contact with the same
points on the driver coupling half.

Move or shim only the driver in order to make adjustments. This prevents strain on the piping

Make sure that the hold-down bolts for the driver feet are tight
when you take indicator measurements.

Make sure that the hold-down bolts for the driver feet are loose
before you make alignment corrections.

Check the alignment again after any mechanical adjustments. This corrects any misalignments that an

This prevents incorrect measurement.

installations.

This keeps the driver stationary since
movement causes incorrect measurement.

This makes it possible to move the driver
when you make alignment corrections.

adjustment may have caused.

Attach the dial indicators for alignment

You must have two dial indicators in order to complete this procedure.

1. Attach two dial indicators on the pump coupling half (X):

a) Attach one indicator (P) so that the indicator rod comes into contact with the perimeter of the

driver coupling half (Y).

24 Model 3171 Installation, Operation, and Maintenance Manual

This indicator is used to measure parallel misalignment.

P

A

Y

X

b) Attach the other indicator (A) so that the indicator rod comes into contact with the inner end of

the driver coupling half.

This indicator is used to measure angular misalignment.

2. Rotate the pump coupling half (X) in order to check that the indicators are in contact with the driver
coupling half (Y) but do not bottom out.

3. Adjust the indicators if necessary.

Align the flexible coupling with a straight edge

Installation (Continued)

WARNING:

• Disconnect and lock out electrical power before installing or servicing the pump.

• When installing in a potentially explosive environment, make sure that the motor is properly certified.

• The coupling used in an ATEX classified environment must be properly certified.

Alignment of the pump and motor is of extreme importance for trouble-free mechanical operation. Straight­edge alignment by an experienced installer is adequate for most installations. Use dial indicators for disc
couplings and applications where alignment to tighter tolerances is desirable. In these cases, use standard
dial indicator procedures.

1. Lay a straight edge across both coupling rims at four points 90° apart.

2. Move the motor until a straight edge rests evenly at each position.

3. Repeat these steps until you achieve the correct alignment.

4. Install a flexible sleeve between the hubs per the manufacturer's directions included with the pump
data package.

5. Tighten all motor bolts.

Float control installation

ITT supplies several different float controls. Refer to the float control installation instructions provided
with the controls for the proper installation procedure. This topic describes the Square D 9036 Simplex
and Square D 9038 Duplex float controls.

How float controls work

The on and off levels of the Square D 9036 simplex and the Square D 9038 duplex are controlled by
adjusting the collars (335). As the liquid level rises, the float rises to contact the upper collar and the
upward movement of the float rod causes the mechanical switch inside the control to close. This
completes the circuit to the starter. Operation continues until the liquid level drops low enough for the
float to contact the lower collar. This pulls the rod down, opening the switch and turning off the pump.

The only difference between the Square D 9036 simplex and the Square D 9038 duplex is in the operating
sequence. For the Square D 9038 duplex, the first pump starts as the water level rises. This allows the float
to contact the upper collar. When the water level drops down and shuts off the first pump, a lever arm
inside the control mechanically switches to the second pump and it comes on for the next cycle.

Model 3171 Installation, Operation, and Maintenance Manual 25

1

2

3

5

6

7

4

Installation (Continued)

APEX high level alarm

If the first pump fails to keep up with demand, or not come on at all, then a continued rise in the level
turns both pumps on. Both pumps run until the low-water level is reached. If both pumps are unable to
keep up with the demand, then an optional high-water alarm switch can be supplied in the alternator to
close a switch if the water level rises past the second pumps on the level. This switch can be wired into a
customer-supplied alarm horn or light.

The APEX high level alarm is an independent device used to sense fluid level and close a switch that
activates a separate alarm. The switch is mounted on a pipe above the support plate. The pipe must extend
into the sump 4 to 6 in. (10 to 15 cm) below the required actuation point. As the liquid level rises in the
pipe, trapped air causes bellows inside the switch to inflate and trip a microswitch. The switch can then
activate a light, horn, relay, solenoid valve, or other electric device.

1. High water alarm

2. Reducing adapter, 0.5 in. x 1.0 in. (13.0 mm x 26.0 mm)

3. Nipple, 1.0 in. (26.0 mm)

4. Coupling, 1.0 in (26.0 mm)

5. Pit cover

6. Pipe, 1.0 in (26 mm), 8.0 in. (204 mm) shorter than the pump length

7. Cut the pipe 2.5 in. (64 mm) below the required switch actuation point

Magnetrol displacer-type liquid level switch

The Magnetrol displacer-type liquid level switch is closed by a magnetic seal inside a sealed tube. Switch
operation is controlled by the buoyancy of weighted displacers suspended on a spring. As liquid level rises,
the resulting change in buoyancy moves the spring upwards. The spring movement causes a magnetic
sleeve to attract a pivoted magnet, closing the actuating switch. Refer to installation guide supplied by the
manufacturer for proper installation and configuration.

Float ball switches

Float balls are individual switches that are used in multiple configurations to control the pump circuit. The
float balls are suspended in the sump to the desired control level. When the fluid level rises to the float
ball, the switch begins to float. The float is either anchored to a pipe or weighted. This allows the switch to
tilt when the fluid continues to rise. When the float tilts, a switch closes that you can use in order to turn
the pump on, activate a high-level alarm, or control any other electrical device.

Install the Square D 9036 simplex and 9038 duplex float controls

A single float and rod assembly is used with the 9036 float switch on a simplex unit or the 9038 duplex
alternator. Refer to the wiring diagram from the manufacturer for the correct wiring of the switch.

If a pit cover is supplied with the pump, the float switch support pipe (435) and the upper rod guide (337)
are installed by the factory. If the pit cover is supplied by others, you must locate, drill, and tap the holes
before you install the switch.

26 Model 3171 Installation, Operation, and Maintenance Manual

1

2

3

4

5

6

7

339

435

335

398

337

437

335

342

335
334

336

366

Installation (Continued)

1. Diameter of the coverplate (A)

2. Radius (B)

3. CL of the pump

4. Radius of 7.0 in. (178.0 mm)

5. 1.25 in. (31.8 mm) NPT float switch NTG
column

6. 0.38 in. (9.5 mm) NPT for the float rod guide

7. 8 in. (203.0 mm) diameter of float (standard)

Figure 5: Location of the float, rod, and switch

Number Coverplate diameter (A) Radius (B)

1 22 in. (559 mm) 14.50 in. (368 mm)
2 26.50 in. (673 mm) 16.50 in. (419 mm)
3 31.00 in. (787 mm) 18.50 in. (470 mm)

1. Before you install the pump in the sump, attach the lower guide arm (366) and the float rod guide
(336) to the correct suction cover bolt (based on the layout).

2. Thread the float switch support pipe (435) and the upper rod guide (337) into the pit cover.

3. Attach the float switch bracket (398) to the float switch support pipe.

You can rotate the float switch around the center line of the pump on the radius (B).

4. Install the float rod (334), float (342), and collars (335).

You must maintain the radius (4) between the float switch column and the float.

Model 3171 Installation, Operation, and Maintenance Manual 27

Commissioning, Startup, Operation, and Shutdown

Commissioning, Startup, Operation, and
Shutdown

Preparation for startup

WARNING:

• Failure to follow these precautions before you start the pump will lead to serious personal injury and
equipment failure.

• Do NOT operate the pump below the minimum rated flows or with the suction or discharge valves
closed. These conditions can create an explosive hazard due to vaporization of pumped fluid and can
quickly lead to pump failure and physical injury.

• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical injury.

• Operating the pump in reverse rotation can result in the contact of metal parts, heat generation, and
breach of containment.

Precautions

NOTICE:

• Verify the driver settings before you start the pump.

• Make sure that the warm-up rate does not exceed 2.5°F (1.4°C) per minute.

You must follow these precautions before you start the pump:

• Flush and clean the system thoroughly to remove dirt or debris in the pipe system in order to prevent
premature failure at initial startup.

• Bring variable-speed drivers to the rated speed as quickly as possible.

• Run a new or rebuilt pump at a speed that provides enough flow to flush and cool the close-running
surfaces of the stuffing-box bushing.

• If temperatures of the pumped fluid will exceed 200°F (93°C), then warm up the pump prior to
operation. Circulate a small amount of fluid through the pump until the casing temperature is within
100°F (38°C) of the fluid temperature.

At initial startup, do not adjust the variable-speed drivers or check for speed governor or over-speed trip
settings while the variable-speed driver is coupled to the pump. If the settings have not been verified, then
uncouple the unit and refer to instructions supplied by the driver manufacturer.

Check the rotation

WARNING:

• Operating the pump in reverse rotation can result in the contact of metal parts, heat generation, and
breach of containment.

• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical injury.

1. Lock out power to the driver.

2. Make sure that the coupling hubs are fastened securely to the shafts.

3. Make sure that the coupling spacer is removed.

The pump ships with the coupling spacer removed.

4. Unlock power to the driver.

28 Model 3171 Installation, Operation, and Maintenance Manual

5. Make sure that everyone is clear, and then jog the driver long enough to determine that the direction

123

333H

333H

369

197

213

369

of rotation corresponds to the arrow on the bearing housing or close-coupled frame.

6. Lock out power to the driver.

Thrust bearing lubrication

WARNING:

Make sure to properly lubricate the bearings. Failure to do so can result in excess heat generation, sparks,
and premature failure.

Grease lubrication

This pump comes with a grease-lubricated duplex thrust bearing. The bearing is pre-lubricated at the
factory with a lithium-based grease. Regrease the bearing according to the schedule in the Maintenance
chapter.

Pure oil-mist lubrication

Pure oil-mist lubrication is an option only available on the API3171.

Flush the steady bearings

There are five 1/4-in. NPT pipe plugs on the standard support plate that you use to connect the flush
lines. Each plug connects with each of the five bearings. Pumps with less than five bearings still have five
plugs, but only the required number are connected to bearings.

1. Remove the plugs from the holes that are connected to flush lines.

2. Connect an external source of clean water to the taps.

The water source must be able to deliver 1 to 2 GPM to each bearing.

3. Turn on the water in order to begin the flush.

Commissioning, Startup, Operation, and Shutdown (Continued)

Sealed bearings

Sealed bearings have a lip seal above and below the bearing in order to keep grit out of the bearing. Sealed
bearings use a spring-loaded grease cup for lubrication. The bearings are pre-lubricated at the factory, but
the grease cups ship in a separate box in order to prevent shipping damage. Fill the grease cups with grease
and screw the cups into the taps that are connected to the bearings. Refill the cups with fresh grease as
needed. Frequently inspect the grease cups after startup in order to check usage and establish the best
relubrication interval.

123

Model 3171 Installation, Operation, and Maintenance Manual 29

Deflector

Commissioning, Startup, Operation, and Shutdown (Continued)

197 Steady bearings

213 Housing, steady bearings

333H Lip seal

369 Retaining ring, steady bearing

Lubricate the sealed bearings with grease cups

For models with grease-lubricated bearings, the spring-operated automatic grease cups are designed to
maintain constant lubrication of the intermediate pump bearings that are fixed to the vertical pump
housing. The center stem protrudes out of the housing when the cup is full and gradually moves down
into the housing as the grease is used. After the wing nut is threaded against the stem zerk fitting and the
bottom of the wing nut rests on the cap of the grease cup, then the grease reservoir is empty and you must
refill it.

Fill the housing

1. Turn the wing nut clockwise until the center stem is raised all the way and the wing nut does not turn
any further.

2. Fit a pressurized grease gun to the top zerk fitting and pump the grease cup full until a small amount
of grease starts to come out of the side vent of the housing.

3. Unthread the wing nut in order to energize the grease cup. Allow the internal spring pressure to push
grease into the bearing lube line.

4. If the stem immediately recedes into the housing and the bearing has been purged, then complete
these steps:

a) Unthread the top lid in order to remove the top of the grease cup.
b) Inspect the plunger for defects.

If all the grease is found on the reverse (or back side) of the plunger, then it is defective and must be
replaced.

Adjust the flow (preferred method)

1. Unthread the wing nut completely against the zerk fitting of the center stem.

2. Unlock the hex nut of the throttling screw and turn the slotted screw clockwise approximately one­half turn at a time.

3. Relock the hex nut and monitor the stem movement.

If the grease in the grease cup is completely consumed in 1 to 2 weeks of operation, then the flow is
correct and will maintain the proper amount of grease to the bearings.

Adjust the flow (alternate method)

This method provides a more precise amount of grease to the bearings independent of changing operating
temperatures and surrounding conditions. However, you must have a more controlled maintenance
schedule in order to make sure this is done on a regular basis.

1. Leave the throttling screw locked and open.

2. Back off the wing nut several turns for every 2 to 3 days of operation.

Shaft sealing with a mechanical seal

Precautions

WARNING:

The mechanical seal used in an Ex-classified environment must be properly certified. Prior to startup,
make sure that all areas that could leak pumped fluid to the work environment are closed.

30 Model 3171 Installation, Operation, and Maintenance Manual

NOTICE:

• The mechanical seal must have an appropriate seal-flush system. Otherwise, excess heat generation
and seal failure can occur.

• Cooling systems such as those for bearing lubrication and mechanical-seal systems must be operating
properly to prevent excess heat generation, sparks, and premature failure.

• Sealing systems that are not self-purging or self-venting, such as plan 23, require manual venting prior
to operation. Failure to do so will result in excess heat generation and seal failure.

Shipping

Pumps may be shipped with or without a mechanical seal installed.

Cartridge-type mechanical seals

Cartridge-type mechanical seals are commonly used. Cartridge seals are preset by the seal manufacturer
and require no field settings. Cartridge seals installed by the user require disengagement of the holding
clips prior to operation, allowing the seal to slide into place. If the seal has been installed in the pump by
ITT, these clips have already been disengaged.

Other mechanical seal types

For other types of mechanical seals, refer to the instructions provided by the seal manufacturer for
installation and setting.

Commissioning, Startup, Operation, and Shutdown (Continued)

Shaft sealing with a stuffing box

This pump is a seamless design. Therefore, when temperatures exceed 180°F (82°C), you must move the
thrust bearing away from the heat source in the pump by adding the upper stuffing box. Air can then
circulate around the bearing in order to keep it cool.

The upper stuffing box is also used to minimize vapor emissions when the pump handles controlled
substances.

Steam jacket pumps (molten sulfur construction)

The steam jacketed connections are located on the support plate. The "steam in" line is connected to an
appropriate source of steam, and the "steam out/condensate" connections are made as dictated by the
installation requirements. A suitable trap should be used.

Impeller-clearance setting

Importance of a proper impeller clearance

A proper impeller clearance ensures that the pump runs at high performance.

WARNING:

• The impeller clearance setting procedure must be followed. Improperly setting the clearance or not
following any of the proper procedures can result in sparks, unexpected heat generation, and
equipment damage.

The clearance is set at 0.015 in. (0.4 mm) off of the suction cover at the factory, but could change due to
piping attachment.

Model 3171 Installation, Operation, and Maintenance Manual 31

Commissioning, Startup, Operation, and Shutdown (Continued)

Pump priming

WARNING:

These pumps are not self priming and must be fully primed at all times during operation. Loss of prime
can lead to excessive heat and severe damage to the pump and seal.

CAUTION:

Do not run the pump dry, because this might damage the pump and/or the steady bearings.

Never start the pump until it has been properly primed. Fully submerge the pump casing prior to starting
the pump.

For dry pit/outside tank mount units:

1. Ensure the suction supply line has adequate fluid head to prime the pump.

2. Slowly open the suction valve.

Install the coupling guard

WARNING:

• Never operate the pump without the coupling guard correctly installed.

• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical injury.

• The coupling used in an Ex-classified environment must be properly certified and must be
constructed from a non-sparking material.

This pump is shipped without the coupling guard installed, because the motor and coupling are also not
installed.

1. Wrap the expanded metal shield (501) around the motor support.

2. Install the two guard springs (501L).

32 Model 3171 Installation, Operation, and Maintenance Manual

Start the pump

CAUTION:

• Immediately observe the pressure gauges. If discharge pressure is not quickly attained, stop the driver,

• Observe the pump for vibration levels, bearing temperature, and excessive noise. If normal levels are

1. Fully close or partially open the discharge valve, depending on system conditions.

2. Start the driver.

3. Slowly open the discharge valve until the pump reaches the desired flow.

4. Immediately check the pressure gauge to ensure that the pump quickly reaches the correct discharge

5. If the pump fails to reach the correct pressure, perform these steps:

6. Monitor the pump while it is operating:

7. Repeat steps 5 and 6 until the pump runs properly.

8. After the pump is brought to temperature for the first time, shut the unit down temporarily and re-

Commissioning, Startup, Operation, and Shutdown (Continued)

reprime, and attempt to restart the pump.

exceeded, shut down the pump and resolve the issue.

pressure.

a) Stop the driver.
b) Prime the pump again.
c) Restart the driver.

a) Check the pump for bearing temperature, excessive vibration, and noise.
b) If the pump exceeds normal levels, then shut down the pump immediately and correct the problem.

A pump can exceed normal levels for several reasons. See Troubleshooting for information about
possible solutions to this problem.

adjust the impeller clearance.

Pump operation precautions

General considerations

CAUTION:

• Vary the capacity with the regulating valve in the discharge line. Never throttle the flow from the
suction side since this can result in decreased performance, unexpected heat generation, and
equipment damage.

• Do not overload the driver. Driver overload can result in unexpected heat generation and equipment
damage. The driver can overload in these circumstances:

• The specific gravity of the pumped fluid is greater than expected.

• The pumped fluid exceeds the rated flow rate.

• Make sure to operate the pump at or near the rated conditions. Failure to do so can result in pump
damage from cavitation or recirculation.

Operation at reduced capacity

WARNING:

Never operate any pumping system with a blocked suction and discharge. Operation, even for a brief
period under these conditions, can cause confined pumped fluid to overheat, which results in a violent
explosion. You must take all necessary measures to avoid this condition.

Model 3171 Installation, Operation, and Maintenance Manual 33

Commissioning, Startup, Operation, and Shutdown (Continued)

CAUTION:

• Avoid excessive vibration levels. Excessive vibration levels can damage the bearings, stuffing box or
seal chamber, and the mechanical seal, which can result in decreased performance.

• Avoid increased radial load. Failure to do so can cause stress on the shaft and bearings.

• Avoid heat build-up. Failure to do so can cause rotating parts to score or seize.

• Avoid cavitation. Failure to do so can cause damage to the internal surfaces of the pump.

Operation under freezing conditions

NOTICE:

Do not expose an idle pump to freezing conditions. Drain all liquid that is inside the pump. Failure to do
so can cause liquid to freeze and damage the pump.

Shut down the pump

WARNING:

The pump can handle hazardous and toxic fluids. Identify the contents of the pump and observe proper
decontamination procedures in order to eliminate the possible exposure to any hazardous or toxic fluids.
Wear the proper personal protective equipment. Potential hazards include, but are not limited to, high
temperature, flammable, acidic, caustic, explosive, and other risks. You must handle and dispose of
pumped fluid in compliance with the applicable environmental regulations.

1. Slowly close the discharge valve.

2. Shut down and lock the driver to prevent accidental rotation.

Make the final alignment of the pump and driver

WARNING:

• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical injury.

• Follow shaft alignment procedures in order to prevent catastrophic failure of drive components or
unintended contact of rotating parts. Follow the coupling installation and operation procedures from
the coupling manufacturer.

You must check the final alignment after the pump and driver are at operating temperature. For initial
alignment instructions, see the Installation chapter.

1. Run the unit under actual operating conditions for enough time to bring the pump, driver, and
associated system to operating temperature.

2. Shut down the pump and the driver.

3. Remove the coupling guard.

See Remove the coupling guard in the Maintenance chapter.

4. Check the alignment while the unit is still hot.

See Pump-to-driver alignment in the Installation chapter.

5. Reinstall the coupling guard.

6. Restart the pump and driver.

34 Model 3171 Installation, Operation, and Maintenance Manual

Maintenance

Maintenance schedule

Maintenance inspections

A maintenance schedule includes these types of inspections:

• Routine maintenance

• Routine inspections

• Three-month inspections

• Annual inspections

Shorten the inspection intervals appropriately if the pumped fluid is abrasive or corrosive or if the
environment is classified as potentially explosive.

Routine maintenance

Perform these tasks whenever you perform routine maintenance:

• Lubricate the thrust bearings.

• Inspect the seal or packing, if present.

Routine inspections

Perform these tasks whenever you check the pump during routine inspections:

• Check for unusual noise, vibration, and bearing temperatures.

• Check the pump and piping for leaks.

• Analyze the vibration.

• Inspect the discharge pressure.

• Inspect the temperature.

• Check the seal chamber and stuffing box for leaks.

• Ensure that there are no leaks from the mechanical seal.

• Adjust or replace the packing in the stuffing box if you notice excessive leaking.

Maintenance

Three-month inspections

Perform these tasks every three months:

• Check that the foundation and the hold-down bolts are tight.

• Check the packing if the pump has been left idle, and replace as required.

• Check the shaft alignment, and realign as required.

Annual inspections

Perform these inspections one time each year:

• Check the pump capacity.

• Check the pump pressure.

• Check the pump power.

If the pump performance does not satisfy your process requirements, and the process requirements have
not changed, then perform these steps:

1. Disassemble the pump.

2. Inspect it.

3. Replace worn parts.

Bearing maintenance

These bearing lubrication sections list different temperatures of the pumped fluid. If the pump is ATEX­certified and the temperature of the pumped fluid exceeds the permitted temperature values, then consult
your ITT representative.

Model 3171 Installation, Operation, and Maintenance Manual 35

Maintenance (Continued)

Thrust bearings

The 3171 comes with a grease-lubricated duplex thrust bearing. The bearing is pre-lubricated at the
factory. Regrease the bearing according to the schedule in the following table.

Table 2: Lubricating intervals in operating hours

Drive-unit size
group

S/ST 2,000 2,000 1,200 750

M/MT 2,000 1,800 800 450

L 2,000 1,200 - -

Below 1800 RPM 1800 RPM 3000 RPM 3600 RPM

Lubricate the bearings after a shutdown period

1. Flush out the bearings and bearing frame with a light oil to remove contaminants.

During flushing, make sure to rotate the shaft slowly by hand.

2. Flush the bearing housing with the proper lubricating oil to ensure oil quality after cleaning.

Lubricating-grease requirements

Precautions

• NOTICE: Never mix greases of different consistencies (NLGI 1 or 3 with NLGI 2) or with
different thickeners. For example, never mix a lithium-based grease with a polyurea-based grease.
Doing so may result in decreased performance.

• NOTICE: Remove the bearings and old grease if you need to change the grease type or consistency.
Failure to do so may result in equipment damage or decreased performance.

Bearing temperature

Bearing temperatures are generally about 20°F (18°C) greater than bearing-housing outer surface
temperatures.

This table shows the type of grease required for the operating temperature of the pump.

Bearing temperature Type of grease

5°F to 230°F (-15°C to 110°C) Use a lithium-based mineral-oil grease with a

Exceed 350°F (177°C) Use a high-temperature grease. Mineral-oil greases

Grease recommendations based on temperature

Most pumps use Sunoco 2EP grease. High temperature units that can pump fluids with a temperature
greater than 350° F (177°C) use Mobil SCH32.

This table shows which brand of grease to use when lubricating the pump.

Brand When temperature of pumped

Mobil Mobilux EP2 SCH32

Exxon Unirex N2 Unirex N3

Sunoco Mutipurpose 2EP N/A

SKF LGMT 2 LGMT 3

consistency of NLGI 2.

should have oxidation stabilizers and a consistency
of NGLI 3.

fluid is less than 350°F (177°C) ­NLGI consistency 2

When temperature of pumped
fluid is greater than350°F
(177°C) - NLGI consistency 3

36 Model 3171 Installation, Operation, and Maintenance Manual

Regrease the thrust bearing

NOTICE: Make sure that the grease container, the greasing device, and the fittings are clean. Failure to
do this can result in impurities entering the bearing housing when you regrease the bearings.

1. Wipe dirt from the grease fittings.

2. Remove the two grease-relief plugs from the bottom of the frame.

3. Fill both of the grease cavities through the fittings with a recommended grease until the fresh grease
comes out of the relief holes.

4. Make sure that the frame seals are seated in the bearing housing.

If they are not, press them in place with the drains located at the bottom.

5. Reinstall the grease-relief plugs.

6. Wipe off any excess grease.

7. Recheck the alignment.

The bearing temperature usually rises after you regrease due to an excess supply of grease. Temperatures
return to normal in about two to four operating hours as the pump runs and purges the excess grease
from the bearings.

Steady bearings

Check the ID of the casing collar (155) and steady bearing (197) per the dimensions in the Bearing fits and
tolerances table. If the ID is greater than what is allowed, remove the snap ring (369) and use a suitable
hydraulic press in order to remove these items for replacement. If sealed bearings are provided, then you
must also remove the lip seals (333H).

The bearing ID is slightly larger before you press it into the housing in order to allow for ID shrinkage
after you press it in place.

Maintenance (Continued)

Shaft-seal maintenance

Mechanical-seal maintenance

WARNING:

The mechanical seal used in an Ex-classified environment must be properly certified. Prior to startup,
make sure that all areas that could leak pumped fluid to the work environment are closed.

CAUTION:

Never operate the pump without liquid supplied to mechanical seal. If you run a mechanical seal dry, even
for a few seconds, this can cause seal damage. Physical injury can occur if a mechanical seal fails.

NOTICE:

• Sealing systems that are not self-purging or self-venting, such as plan 23, require manual venting prior
to operation. Failure to do so will result in excess heat generation and seal failure.

• Cooling systems, such as those for bearing lubrication and mechanical-seal systems, must be operating
properly to prevent excess heat generation, sparks, and premature failure.

• The mechanical seal must have an appropriate seal flush system or excess heat generation and seal
failure can occur.

Reference drawing

The manufacturer supplies a reference drawing with the data package. Keep this drawing for future use
when you perform maintenance and seal adjustments. The seal drawing specifies the required flush fluid
and attachment points.

Model 3171 Installation, Operation, and Maintenance Manual 37

Maintenance (Continued)

Before you start the pump

Check the seal and all flush piping.

If the pump is shipped with oil-lubricated seals, keep the seal faces lubricated with oil at all times.

Packed stuffing-box maintenance

WARNING:

• Packed stuffing boxes are not allowed in an ATEX-classified environment.

• Never attempt to replace the packing until the driver is properly locked out and the coupling spacer is
removed.

Lubrication intervals

The lubrication intervals vary and depend upon the temperature and gland tightness. Keep the grease cup
full at all times.

Periodically make several turns on the grease-cup cap while you inject fresh grease into the stuffing box.
Check the pump daily upon initial operation, and extend this interval as required.

NOTICE:

Do not over-tighten the stuffing box. Excessive pressure can wear out packing prematurely and seriously
damage the shaft.

Packing replacement

Replace the packing in this sequence:

1. Three rings of packing

2. Lantern ring

3. Two rings of packing

4. Gland

Disassembly

Disassembly precautions

WARNING:

• Make sure that the pump is isolated from the system and that pressure is relieved before you
disassemble the pump, remove plugs, open vent or drain valves, or disconnect the piping.

• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical injury.

• Crush hazard. The unit and the components can be heavy. Use proper lifting methods and wear steel­toed shoes at all times.

• The pump can handle hazardous and toxic fluids. Identify the contents of the pump and observe
proper decontamination procedures in order to eliminate the possible exposure to any hazardous or
toxic fluids. Wear the proper personal protective equipment. Potential hazards include, but are not
limited to, high temperature, flammable, acidic, caustic, explosive, and other risks. You must handle
and dispose of pumped fluid in compliance with the applicable environmental regulations.

NOTICE:

Make sure that all replacement parts are available before you disassemble the pump for overhaul.

38 Model 3171 Installation, Operation, and Maintenance Manual

Tools required

In order to disassemble the pump, you need these tools:

Drain the pump

CAUTION:

Maintenance (Continued)

• Bearing puller

• Brass drift punch

• Cleaning agents and solvents

• Dial indicators

• Feeler gauges

• Hydraulic press

• Induction heater

• Lifting sling

• Micrometer

• Rubber mallet

• Screwdriver

• Snap-ring pliers

• Torque wrench with sockets

• Wrenches

• Allow all system and pump components to cool before you handle them to prevent physical injury.

1. Close the isolation valves on the suction and discharge sides of the pump.

You must drain the system if no valves are installed.

2. Open the drain valve.

Do not proceed until liquid stops coming out of the drain valve. If liquid continues to flow from the
drain valve, the isolation valves are not sealing properly and you must repair them before you proceed.

3. Leave the drain valve open .

Do not close the drain valve until the reassembly is complete.

4. Drain the liquid from the piping and flush the pump if it is necessary.

5. Disconnect all auxiliary piping and tubing.

6. Remove the coupling guard.

7. Disconnect the coupling.

Remove the pump from the sump

1. Remove the motor bolts (371).

Model 3171 Installation, Operation, and Maintenance Manual 39

501L

338

371L

240

501

351A

370H

182

187

317N

351

Maintenance (Continued)

2. Place the sling on the motor lifting lugs and remove the motor.

3. Remove the support plate anchor bolts.

4. Attach the eyebolts to the support plate.

5. Use properly-sized slings in order to lift the pump from the sump.

6. Lay the pump horizontally on proper supports where there is sufficient clearance to disassemble the

7. Remove the bolts (317N) in order to remove the strainer (187).

Refer to the Installation chapter for the proper handling procedure.

pump.

40 Model 3171 Installation, Operation, and Maintenance Manual

8. Remove the suction cover (182).

9. Remove and discard the suction cover gasket (351).

Replace the gasket during reassembly.

10. Remove the discharge elbow-casing bolts (370H).

11. Disconnect any steady bearing flush tubing (190).

Remove the impeller

100

101

178

199

198

122

192/30

370G

536G

357V

100

155

CAUTION:

Wear heavy work gloves when you handle impellers. The sharp edges can cause physical injury.

1. Loosen the set screw at the end of the impeller nut.

2. Loosen and remove the impeller nut.

The impeller nut has left-hand threads.

3. Pull the impeller from the shaft.

Use a spanning-type puller if required.

Maintenance (Continued)

4. Remove the impeller key.

Save the key for reassembly unless it is damaged.

5. For L group models only, do the following:

a) Remove the casing (100) to adapter (108) bolts.
b) Remove casing. Do not remove casing collar (155) at this time.
c) Remove the adapter (108) to column bolts.
d) Remove the adapter. Do not remove steady bearing (197) at this time.

Model 3171 Installation, Operation, and Maintenance Manual 41

192

213

369

357X

306

536E

197

123

372B

136

382

112

370C

193B

134

369A

332A

361A

370D

415

113

333

400

122

M/MT/L Only

Maintenance (Continued)

Disassemble the column

1. Remove the column down to the steady bearing housing bolts (372B).

If your pump has no intermediate steady bearings (only one column section), then skip this step since
you do not have any column extension (306) or steady bearing housing (213).

a) Start at the casing end of the pump and remove the column extensions (306), steady bearing

housings (213), and deflectors (123) one at a time. Support the shaft in order to prevent bending
while you remove these sections.

It is not necessary to remove the head column (192). Do not remove the steady bearings at this
time. Refer to inspection procedures prior to removal.

2. Remove the pump half coupling hub (233) and key.

3. Remove the locking bolts (370C) and then slide bearing shell (134) assembly with the shaft out
through the motor support (240).

CAUTION:

Two people should handle any shaft over 9 feet long. Improper handling can bend the shaft.

4. Use a screwdriver in order to pry the labyrinth seal (332A) from the bearing shell (134).

NOTICE:

We recommend that you replace the labyrinth seal every time the pump is inspected.

42 Model 3171 Installation, Operation, and Maintenance Manual

5. Remove the bearing retaining ring (361A).

6. Slide the bearing shell (134) off the bearing and shaft.

7. Remove the locknut (136) and the lockwasher (382).

8. Use a suitable bearing puller in order to remove the bearing (112).

Make sure to save the bearing for inspection.

9. Set the shaft on a table where it is adequately supported.

You do not need to disassemble the pump any further unless you need to replace bad parts.

Preassembly inspections

Replacement guidelines

Casing check and replacement

Inspect the casing for cracks and excessive wear or pitting. Thoroughly clean gasket surfaces and alignment
fits in order to remove rust and debris.

Repair or replace the casing if you notice any of these conditions:

• Localized wear or grooving that is greater than 1/8 in. (3.2 mm) deep

• Pitting that is greater than 1/8 in. (3.2 mm) deep

• Irregularities in the casing-gasket seat surface

Impeller replacement

This table shows the criteria for replacing the impeller parts:

Impeller parts When to replace

Vane edges When you see cracks, pitting, or corrosion damage

Maintenance (Continued)

Gaskets, O-rings, and seats replacement

• Replace all gaskets and O-rings at each overhaul and disassembly.

• Inspect the seats. They must be smooth and free of physical defects.

In order to repair worn seats, skin cut them in a lathe while you maintain dimensional relationships
with other surfaces.

• Replace parts if the seats are defective.

Column sections

Inspect the column section(s) (306, 192) for any cracks or excessive corrosion damage. Replace if necessary.

Motor support

Inspect the motor support (240) for any cracks or excessive corrosion damage. Replace if necessary.

Shaft replacement guidelines

Shaft measurement check

Check the bearing fits of the shaft. If any are outside the tolerances shown in the Bearing fits and
tolerances table, then replace the shaft.

Shaft straightness check

Check the shaft straightness. Use “V” blocks or balance rollers to support the shaft on the bearing fit
areas. Replace the shaft if runout exceeds 0.001 in. (0.03 mm).

NOTICE:

Do not use shaft centers for the runout check as they may have been damaged during the removal of the
bearings or impeller.

Model 3171 Installation, Operation, and Maintenance Manual 43

Maintenance (Continued)

Shaft surface check

Check the shaft surface for damage, especially in areas indicated by the arrows in the following figure.
Replace the shaft if it is damaged beyond reasonable repair.

Bearings inspection

Condition of bearings

Do not reuse bearings. The condition of the bearings provides useful information on operating conditions
in the bearing frame.

Checklist

Perform these checks when you inspect the bearings:

• Inspect the bearings for contamination and damage.

• Note any lubricant condition and residue.

• Inspect the ball bearings to see if they are loose, rough, or noisy when you rotate them.

• Investigate any bearing damage to determine the cause. If the cause is not normal wear, correct the
issue before you return the pump to service.

Bearing fits and tolerances

This table references the bearing fits and tolerances according to ISO 286 (ANSI/ABMA Standard 7) in
inches (millimeters).

Table 3: Steady bearing tolerances

Descript
ion

Carbon 1.132–

Bronze 1.129–

Fluted
elastomer

Rulon 1.132–

Casing
collar

Bearing ID (pressed into
place)

S/ST M/MT L S/ST M/MT L S/ST M/MT L

1.134
(28.753–

28.804)

1.131
(28.677–

28.727)

1.126–

1.130
(28.600–

28.702)

1.134
(28.753–

28.804)

1.183–

1.190
(30.048–

30.226)

1.633–

1.635
(41.478–

41.529)

1.629–

1.631

41.377–

41.427

1.627–

1.632
(41.326–

41.453)

1.633–

1.635
(41.478–

41.529)

1.678–

1.685
(42.621–

42.799)

2.258–

2.260
(57.353–

57.404)

2.256–

2.258
(57.302–

57.353)

2.253–

2.257
(57.226–

57.328)

2.258–

2.260
(57.353–

57.404)

2.299–

2.306
(58.395–

58.472)

Housing bore Running clearance (1/2

1.621–

1.623
(41.173–

41.224)

1.621–

1.623
(41.173–

41.224)

1.621–

1.623
(41.173–

41.224)

- - - 0.0055–

1.811–

1.816
(45.999–

46.126)

2.121–

2.123
(53.873–

53.924)

2.121–

2.123
(53.873–

53.924)

2.121–

2.123
(53.873–

53.924)

2.243–

2.245
(56.972–

57.023)

2.994–

2.996
(76.048–

76.098)

2.994–

2.996
(76.048–

76.098)

2.994–

2.996
(76.048–

76.098)

3.243–

3.245
(82.372–

82.423)

diametrical clearance)

0.0055–

0.0035
(0.140–

0.089)

0.004–

0.002
(0.102–

1.051)

0.0035–

0.0005
(0.089–

0.013)

0.0035
(0.140–

0.089)

0.0335–

0.029
(0.851–

0.737)

0.006–

0.004
(0.152–

0.102)

0.004–

0.002
(0.102–

1.051)

0.0045–

0.001
(0.114–

0.025)

0.006–

0.004
(0.152–

0.102)

0.031–

0.0265
(0.787–

0.673)

0.0065–

0.004
(0.165–

0.102)

0.0055–

0.003
(0.140–

0.076)

0.005–

0.004
(0.127–

0.102)

0.0065–

0.004
(0.165–

0.102)

0.029–

0.0245
(0.737–

0.622)

44 Model 3171 Installation, Operation, and Maintenance Manual

Table 4: Thrust bearing fits

240

370L

192

370M

189132

Group Shaft OD Shell ID

S/ST 0.9848/0.9844

(25.0139/25.0038)

M/MT 1.5755/1.5749

(40.0177/40.0025)

L 2.1660/2.1655

(55.0164/55.0037)

Shaft runout tolerances

The following shaft runout tolerances apply to all size groups:

• Coupling end: 0.002 in. (0.051 mm)

• Shaft body: 0.0005 in./ft.

• Impeller end: 0.005 in. (0.127 mm)

Reassembly

Assemble the column and support plate

1. If you use the optional stuffing box, then attach the stuffing box (221) to support plate (189) with
bolts (370L).

2. Attach the motor support (240):

Maintenance (Continued)

2.4416/2.4409
(62.0166/61.9989)

3.5442/3.5433
(90.0227/89.9998)

4.7253/4.7240
(120.0226/119.9896)

If ... Then...

You use the stuffing box Attach the motor support (240) to the stuffing box with bolts (370J).

You do not use the stuffing box Attach the motor support (240) to the support plate (189) with bolts

(370J).

3. Attach the head column (192):

If... Then...

You use the stuffing box Attach the head column (192) to the stuffing box with bolts (370M).

You do not use the stuffing box Attach the head column (192) to the motor support with bolts (370M).

Make sure that the vent holes are closer to the motor support.

Model 3171 Installation, Operation, and Maintenance Manual 45

136

382

112

370C

193B

134

369A

122

400

333

113

415

370D

361A

332A

M/MT/L

Only

Maintenance (Continued)

Assemble the rotating element

CAUTION:

Two people should handle any shaft over 9 feet long. Improper handling can bend the shaft.

1. For all groups except S/ST, install the retaining ring (369A) on the shaft (122).

2. Install the thrust bearing (112) on the shaft.

There are several methods that you can use in order to install bearings. The recommended method is
to use an induction heater that heats as well as demagnetizes the bearing.

CAUTION:

Wear insulated gloves when you use a bearing heater. Bearings get hot and can cause physical injury.

3. Install the lockwasher (382) on the shaft (122). Make sure that the tang of lockwasher is in the keyway

4. Thread the locknut (136) onto the shaft and tighten the locknut until it is snug.

5. Bend any tang of the lockwasher into one of the slots on the locknut. Tighten the locknut if necessary

6. Press the grease seal (333) into the bearing shell (134).

7. Slide the bearing shell onto the pump-end of the shaft and over the bearing.

8. Insert the retaining ring (361A) in the bearing shell groove. Make sure to keep the flat side against the

9. Slide the labyrinth seal (332A) over the coupling-end of the shaft into the bearing shell until it is flush.

10. With the support plate in a vertical position, slide the shaft horizontally through the motor support.

11. Install the hold-down bolts (370C) and jacking bolts (370D) with jam nuts (415).

Assemble the column

If intermediate steady bearings are required, then you need additional column extensions (306) and steady
bearing housings (213).

1. Prepare the steady bearing housing assemblies, if applicable.

of the shaft.

to align a lockwasher tab with a locknut slot.

bearing.

Support the shaft and column with suitable stands.

You do not need to precisely center the steady bearing, and the holes in the bearing do not need to
line up with the holes in the housing. A recessed area inside the housing (213) allows lubricants to find
the opening in the bearing.

a) Remove the snap ring (369), if applicable.
b) Use a hydraulic press in order to press out the old steady bearing (197).
c) Press in the new steady bearing.

46 Model 3171 Installation, Operation, and Maintenance Manual

A snap ring (369) is no longer required due to the fits. If your pump has a snap ring, then it is not
necessary to reinstall it. However, the snap ring is still required on sealed bearings.

2. Slide the casing assembly onto the shaft and seat the casing flange against the column flange.

Make sure the discharge nozzle is aligned with the discharge pipe hole in the support plate.

3. Install the bolts (371G).

Assemble the impeller, suction cover, and strainer

1. Add a film of oil to the shaft and place the impeller key (178) and impeller (101) on the shaft.

2. Check that all of the bearing shell bolts (370C and 370D) are completely backed off.

3. Install the impeller washer (199) and impeller screw (198).

When you tighten the impeller screw, the impeller will be seated on the shaft. The impeller screw has a
nylon insert to lock it in place. Do not exceed these torque values when you tighten the impeller screw:

Group Torque value

S/ST 500 in-lbs (56 Nm)

M/MT and L 900 in-lbs (102 Nm)

4. Install the suction cover gasket (351), suction cover (182), and strainer (187) with bolts (317N).

Alloy strainers have extra-heavy spacer washers (533) between the strainer and the suction cover. If
the unit is supplied with a lower-float control guide arm (366), then use an extra-long bolt in this hole.

5. Check the axial travel of the impeller.

If the travel is less than 0.030 in. (0.762 mm), then add extra gaskets (351) in order to obtain the
minimum travel.

6. Install the discharge elbow gasket (351A) and the discharge elbow (315) using bolts (370H).

Accurate alignment of the elbow is critical in order to make sure that there is no obstruction to the
flow through the connection.

7. Install the discharge pipe (195), pipe nuts (242), and flange (195S, if used).

Make sure that the pipe nuts are tight and that there is no strain on the pump.

8. Rotate the shaft by hand in order to make sure that there is no binding.

9. Connect all auxiliary piping.

10. Replace the pump half coupling hub (233) and lubricate the pump bearings.

Maintenance (Continued)

Model 3171 Installation, Operation, and Maintenance Manual 47

Troubleshooting

Troubleshooting

Operation troubleshooting

Symptom Cause Remedy

The pump is not delivering
liquid.

The pump is not producing
the rated flow or head.

The pump starts and then
stops pumping.

The bearings are running hot.

The pump is not primed. Make sure the pit is filled with liquid above the

casing. On dry pit units, the casing and suction
pipe must be completely filled.

The discharge head it too high.

The motor speed is too low.

The suction line is clogged.

The impeller, discharge pipe, or strainer is
clogged.

The shaft is rotating in the wrong direction.

The suction lift is too high.

The amount of available NPSH is not sufficient.

The shaft is rotating in the wrong direction. Change the rotation. The rotation must match the

The discharge head is higher than expected.

The impeller, discharge pipe, or strainer is
clogged.

The motor speed is too low.

The suction line is clogged.

The suction lift is too high.

The impeller is worn or broken.

The suction line has air or vapor pockets.

The amount of available NPSH is not sufficient.

The pump is not primed. Re-prime the pump and check that the pump and

The float controls are not adjusted properly.

The strainer is clogged.

The suction line has air or vapor pockets.

The suction line has an air leak.

The pump and driver are not aligned properly. Realign the pump and driver.

There is not sufficient lubrication.

The lubrication was not cooled properly.

Check the total head, particularly friction loss.

Check the motor speed.

Remove the obstructions.

Remove obstructions or back-flush the pump.

Change the rotation. The rotation must match the
arrow on the bearing housing or pump casing.

Shorten the suction pipe.

Check the amount of NPSH available and required
and adjust accordingly.

arrow on the bearing housing or pump casing.

Check the total head, particularly friction loss.

Remove obstructions or back-flush the pump.

Check the motor speed.

Remove the obstructions.

Shorten the suction pipe.

Inspect and replace the impeller if necessary.

Rearrange the piping in order to eliminate air
pockets.

Check the amount of NPSH available and required
and adjust accordingly.

suction line are full of liquid.

Check the float controls.

Check the sump for large items that the pump may
be picking up. Check if the bearings are running hot.

Rearrange the piping in order to eliminate air
pockets.

Repair the leak.

Check the lubricant for suitability and level.

Check the cooling system.

48 Model 3171 Installation, Operation, and Maintenance Manual

Symptom Cause Remedy

The pump is noisy or
vibrates.

The motor requires
excessive power.

The pump and driver are not aligned properly. Realign the pump and driver.

The impeller is partly clogged.

The impeller or shaft is broken or bent.

The foundation is not rigid.

The bearings are worn.

Rotating parts are loose, broken, or rubbing
against each other.

The suction or discharge piping is not anchored
or properly supported.

The pump is cavitating.

The discharge head has dropped below the
rated point and is pumping too much liquid.

The liquid is heavier than expected.

Rotating parts are rubbing against each other.

The motor speed is too high.

The impeller clearance is too tight.

Back-flush the pump in order to clean the impeller.

Replace the impeller or shaft as necessary.

Tighten the hold-down bolts of the pump and
motor. Make sure that the base plate is properly
grouted without voids or air pockets.

Replace the bearings.

Replace parts as necessary.

Anchor the suction or discharge piping as
necessary according to recommendations in the
Hydraulic Institute Standards Manual.

Locate and correct the system problem.

Install a throttle valve. If this does not help, then
trim the impeller diameter. If this does not help,
then contact your ITT representative.

Check the specific gravity and viscosity.

Check the parts that are wearing for proper
clearances.

Check the motor speed.

Adjust the impeller clearance.

Troubleshooting (Continued)

Assembly troubleshooting

Table 5: Troubleshooting procedure

Symptom Cause Remedy

There is excessive shaft end play. The internal clearance of the bearings is

excessive.

The thrust-bearing end cover is loose. Tighten the screws.

There are too many shims under the thrust
bearing end cover.

The runout for the shaft is excessive. The shaft is bent. Replace the shaft.

The runout for the bearing-frame flange is
excessive.

The runout for the seal-chamber cover is
excessive.

The runout for the impeller wear ring is
excessive.

The shaft is bent. Replace the shaft.

The flange of the bearing frame is distorted. Replace the bearing-frame flange.

The seal-chamber cover is improperly seated
on the frame.

There is corrosion or wear on the seal­chamber cover.

The shaft is bent. Replace the shaft.

The wear ring was machined improperly. Replace or re-machine the impeller.

Replace the bearings with a bearing of
the correct type.

Remove the individual shims to obtain
the proper thickness.

Replace or re-machine the seal­chamber cover.

Replace the seal-chamber cover.

Model 3171 Installation, Operation, and Maintenance Manual 49

332A

136

382

112

370C

113

134

358Z

189

122

370M

192

195

132

370L

242

240

193B

333

415

370D

361A

233

235

232

337

338

Parts Listings and Cross-Sectional Drawings

Parts Listings and Cross-Sectional Drawings

Dimensional drawings

Figure 6: 3171 exploded view (part 1 of 2)

50 Model 3171 Installation, Operation, and Maintenance Manual

123

197

213

357X

306

370G

123

197

528D

357V

100

155

101

178

351

182

187

317N

198

199

536H

427G

358B

351A

315

370H

543E

372B

Parts Listings and Cross-Sectional Drawings (Continued)

Figure 7: 3171 exploded view (part 2 of 2)

Parts list

Table 6: Parts list with materials of construction

Item Quantity Part name All iron Bronze

-fitted

100 1 Casing 1000

1000

101 1 Impeller 1018 1101 1212 1216 1203 1204 1217 1215

112 1 Thrust bearing Double row angular contact

122 1 Shaft 2205 2216 2221 2263 2264

123

1

Deflector EPDM

134 1 Bearing shell 1000

136 1 Bearing locknut Steel

155 1 Casing bushing Carbon-filled PTFE (Teflon®)

178 1 Impeller key 2229 2230 2247 2248

182 1 Suction cover 1000 1212 1216

187 1 Strainer 1000 3211 1204 1217 1215

189 1 Support plate 3201

190

1

Flush tubing As specified

192 1 Head column 6501 6545 6506 6519 6548

193B 1 Grease fitting Carbon or as specified

1

The quantity depends on pump length and speed. Nuts and washers are omitted for clarity.

Model 3171 Installation, Operation, and Maintenance Manual 51

Carbon
steel

CD4­fitted

316SS Alloy20Hast. B Hast.

1212 1216 1203 1204 1217 1215

1203

1204 1217 1215

C

Parts Listings and Cross-Sectional Drawings (Continued)

Item Quantity Part name All iron Bronze

-fitted

Carbon
steel

CD4­fitted

316SS Alloy20Hast. B Hast.

C

195 1 Discharge pipe 6501 - - 6506 6519 6548

197

1

Steady bearings Carbon or as specified

198 1 Impeller screw 2229 2230 2247 6548

199 1 Impeller washer 2229 2230 - -

213

1

Steady bearing housing 1000 1203 1204 1217 1215

240 1 Motor support 1000

242 2 Pipe nut 1000 1203 1204 1217 1215

306

1

Column extension 6501 6545 6506 - -

315 1 Discharge elbow 1000 1212 1216 1203 1204 1217 1215

332A 1 Labyrinth seal Carbon Teflon

®

333 1 Lip seal Nitrile lip seal

333H 2/Brg Lip seal Nitrile Viton

®

351 1 Gasket (suction cover to casing) Nitrile acrylic

351A 1 Gasket (discharge elbow to casing) Nitrile acrylic

361A 1 Retaining ring (thrust bearing) Steel

369

1

Retaining ring (steady bearing) PH15-7MO Stainless C-20 Hastelloy

369A 1 Retaining ring (shaft) M/MT, L Groups Only. Steel

370C 3 Clamp bolt (bearing shell) 2210

370D 3 Jack bolt (bearing shell) 2210

370G 6 Bolt (column to casing) 2210 2229 2230 2247 2248

370H 4 Bold (elbow to casing) 2210 2229 2230 2247 2248

370L 4 Bolt (motor adapter to support plate) 2210

370M 4 Bolt (head column to motor support) 2210 2229 2230 2247 2248

371 4 Bolt (motor to motor support) 2210

501 1 Coupling guard 3122

501L 2 Guard springs Steel

Table 7: Material code cross reference

Goulds code ASTM number

1000 A48 CL25B Cast Iron

1018 A536-84 60-42-10 Ductile Iron

1101 B584 Silicon Brass

1203 A743 CF8M 316 Stainless

1204 A743 CN7M Alloy 20

1212 A216 WCB Carbon Steel

1215 A494-90 CW6M C1,1 Hastelloy C

1216 A890 1A CD4MCuN

1217 A494 N-7M Hastelloy B

2205 C1045 Carbon Steel Ground and Polished

2210 A108 Gr1211 Carbon Steel

2216 A276 316 Stainless Ground and Polished

2229 A276-91A Stainless

52 Model 3171 Installation, Operation, and Maintenance Manual

Parts Listings and Cross-Sectional Drawings (Continued)

Goulds code ASTM number

2230 B743 20CB3 Carpenter 20

2247 B335 Type B-2 Hastelloy B

2248 B574 C-276 Hastelloy C

2263 B335 B-2 Hastelloy B Ground and Polished

2264 B574 C-276 Hastelloy C Ground and Polished

3122 Aluminum

3201 A283 Grade D Carbon Steel Plate

3211 A240 316 Steel Plate

6501 A53 Type F Carbon Steel Schedule 40 Pipe

6506 B464 C20CB3 Carpenter 20 Schedule 40 Pipe

6511 Red Brass Pipe SPS

6519 B622 Hastelloy B Schedule 40 Pipe

6545 A312 316L Stainless Steel Schedule 40 Pipe

6548 Hastelloy C C-276 Schedule 40 Pipe

Model 3171 Installation, Operation, and Maintenance Manual 53

338

332A

136

415

134

370D

113

382

361A

132

369A

333

242

370M

190

536E

213

775E

190

197

195

315

370H

351A182178187198317N

533

199

351

101

100

155

357V

536G

370G

123

306

197

357X

372B

123

122

192

189

370L

112

193B

370C

240

233

235

371

232

Parts Listings and Cross-Sectional Drawings (Continued)

Cross-sectional diagrams

S/ST and M/MT groups

54 Model 3171 Installation, Operation, and Maintenance Manual

338
240

332A

370D

136

415

113

134

193B

132

370N

189

189D

195

315

370H

571E

351A

536H

427G

182198

187199

317N

351

101

100

370

155

108A

370G

306

213

190

536E

775E

197

357X

372B

123

192

122

369A

370M

333

112

370L

361A

193B

382

370C

233

235

232

371

197

178

L group

Parts Listings and Cross-Sectional Drawings (Continued)

Model 3171 Installation, Operation, and Maintenance Manual 55

Local ITT Contacts

Local ITT Contacts

Regional offices

Region Address Telephone Fax

North America (Headquarters) ITT - Goulds Pumps

240 Fall Street
Seneca Falls, NY 13148
USA

Asia Pacific ITT Industrial Process

10 Jalan Kilang #06-01
Singapore 159410

Europe ITT - Goulds Pumps

Millwey Rise Industrial Estate
Axminster, Devon, England
EX13 5HU

Latin America ITT - Goulds Pumps

Camino La Colina # 1448
Condominio Industrial El Rosal
Huechuraba – Santiago
8580000
Chile

Middle East and Africa ITT - Goulds Pumps

Achileos Kyrou 4
Neo Psychiko 115 25 Athens
Greece

[phone] [phone]

[phone] [phone]

[phone] [phone]

[phone]

[phone] [phone]

[phone]

56 Model 3171 Installation, Operation, and Maintenance Manual

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USA
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© 2009 ITT Corporation. The original instruction is in English. All non-English instructions are translations of the original

instruction. en_US.2009-10.IOM.3171