ITT GOULDS PUMPS 3408 User manual

Installation, Operation, and
Maintenance Manual
Model 3408

Table of Contents
1 Introduction and Safety ....................................................................................................................................4
1.1 Introduction................................................................................................................................................ 4
1.1.1 Requesting other information ..........................................................................................................4
1.2 Safety ........................................................................................................................................................4
1.2.1 Safety terminology and symbols ..................................................................................................... 5
1.2.2 Environmental safety.......................................................................................................................6
1.2.3 User safety ......................................................................................................................................7
1.2.4 Safety regulations for Ex-approved products in potentially explosive atmospheres ....................... 9
1.2.5 Monitoring equipment.................................................................................................................... 11
1.3 Product warranty ..................................................................................................................................... 11
2 Transportation and Storage............................................................................................................................ 12
2.1 Inspect the delivery ................................................................................................................................. 12
2.1.1 Inspect the package ......................................................................................................................12
2.1.2 Inspect the unit..............................................................................................................................12
2.2 Transportation guidelines ........................................................................................................................ 12
2.2.1 Precautions ................................................................................................................................... 12
2.2.2 Lifting methods..............................................................................................................................12
2.3 Storage guidelines................................................................................................................................... 14
2.3.1 Pump storage requirements..........................................................................................................14
3 Product Description ........................................................................................................................................16
3.1 General description .................................................................................................................................16
3.2 Nameplate information ............................................................................................................................17
4 Installation........................................................................................................................................................21
4.1 Pre-installation......................................................................................................................................... 21
4.1.1 Pump location guidelines .............................................................................................................. 21
4.1.2 Foundation requirements .............................................................................................................. 22
4.2 Set the baseplate .................................................................................................................................... 23
4.3 Pump-to-driver alignment ........................................................................................................................ 23
4.3.1 Alignment checks ..........................................................................................................................24
4.3.2 Align the pump using a straight edge............................................................................................25
4.3.3 Align the pump using a dial indicator ............................................................................................26
4.4 Grout the baseplate.................................................................................................................................27
4.5 Piping checklists......................................................................................................................................28
4.5.1 General piping checklist ................................................................................................................28
4.5.2 Suction piping checklist.................................................................................................................30
4.5.3 Suction-piping valve considerations..............................................................................................33
4.5.4 Discharge piping considerations ................................................................................................... 33
4.5.5 Pressure gauges ...........................................................................................................................34
4.6 Pump doweling........................................................................................................................................34
5 Commissioning, Startup, Operation, and Shutdown ...................................................................................35
5.1 Preparation for startup............................................................................................................................. 35
5.2 Pump priming ..........................................................................................................................................36
5.3 Fill the system ......................................................................................................................................... 36
5.4 Start the pump.........................................................................................................................................37
Table of Contents
Model 3408 Installation, Operation, and Maintenance Manual 1

5.5 Operational checklist ............................................................................................................................... 37
5.6 Shut down the pump ............................................................................................................................... 38
5.7 Freeze protection .................................................................................................................................... 38
6 Maintenance.....................................................................................................................................................40
6.1 Maintenance schedule ............................................................................................................................ 40
6.2 Flood-damaged pumps ........................................................................................................................... 41
6.3 Bearing maintenance .............................................................................................................................. 41
6.3.1 Regrease the grease-lubricated bearings .....................................................................................41
6.3.2 Lubricate the oil-lubricated bearings ............................................................................................. 43
6.3.3 Bearing temperatures....................................................................................................................45
6.3.4 Coupling lubrication.......................................................................................................................46
6.4 Shaft-seal maintenance........................................................................................................................... 46
6.4.1 Packed stuffing box maintenance ................................................................................................. 46
6.4.2 Mechanical seal maintenance.......................................................................................................47
6.5 Disassembly ............................................................................................................................................ 47
6.5.1 Disassembly precautions .............................................................................................................. 47
6.5.2 Change the rotation.......................................................................................................................48
6.5.3 Remove the upper half of the casing ............................................................................................49
6.5.4 Remove the rotating element ........................................................................................................49
6.5.5 Disassemble the pump with packing.............................................................................................50
6.5.6 Disassemble the pump with mechanical seals on the shaft.......................................................... 52
6.5.7 Disassemble the pump with mechanical seals on the shaft sleeve .............................................. 55
6.6 Preassembly............................................................................................................................................ 58
6.6.1 Replace wear parts ....................................................................................................................... 58
6.7 Reassembly............................................................................................................................................. 59
6.7.1 Assemble the pump with packing..................................................................................................59
6.7.2 Assemble the pump with mechanical seals on the shaft............................................................... 64
6.7.3 Assemble the pump with mechanical seals on the shaft sleeves ................................................. 66
6.7.4 Install the bearings ........................................................................................................................70
6.7.5 Install the gaskets .........................................................................................................................72
6.7.6 Install the rotating element ............................................................................................................72
6.7.7 Assemble the casing .....................................................................................................................74
6.7.8 Complete the assembly with packing............................................................................................75
6.7.9 Install the packing (optional method) ............................................................................................75
6.8 Vertical units ............................................................................................................................................76
6.8.1 Remove the upper half of the casing ............................................................................................76
6.8.2 Remove the rotating element ........................................................................................................78
6.8.3 Assemble the rotating element......................................................................................................78
6.8.4 Assemble the casing .....................................................................................................................79
6.8.5 Remove the complete pump ......................................................................................................... 80
6.9 Spare parts.............................................................................................................................................. 80
7 Troubleshooting .............................................................................................................................................. 81
7.1 Troubleshooting....................................................................................................................................... 81
8 Parts List and Cross-Sectionals ....................................................................................................................84
8.1 Exploded views ....................................................................................................................................... 84
8.2 Parts list................................................................................................................................................... 86
9 Local ITT Contacts ..........................................................................................................................................88
Table of Contents
2 Model 3408 Installation, Operation, and Maintenance Manual

9.1 Regional offices....................................................................................................................................... 88
Table of Contents
Model 3408 Installation, Operation, and Maintenance Manual 3

1 Introduction and Safety
1.1 Introduction
Purpose of this manual
The purpose of this manual is to provide necessary information for:
•Installation
• Operation
• Maintenance
CAUTION:
Failure to observe the instructions contained in this manual could result in personal injury
and/or property damage, and may void the warranty. Read this manual carefully before instal-
ling and using the product.
NOTICE:
Save this manual for future reference and keep it readily available.
1.1.1 Requesting other information
Special versions can be supplied with supplementary instruction leaflets. See the sales contract for any
modifications or special version characteristics. For instructions, situations, or events that are not consid-
ered in this manual or in the sales documents, please contact the nearest ITT representative.
Always specify the exact product type and serial number when requesting technical information or spare
parts.
1.2 Safety
WARNING:
•Risk of serious personal injury. Applying heat to impellers, propellers, or their retaining
devices can cause trapped liquid to rapidly expand and result in a violent explosion. This
manual clearly identifies accepted methods for disassembling units. These methods must
be adhered to. Never apply heat to aid in their removal unless explicitly stated in this
manual.
• The operator must be aware of the pumpage and take appropriate safety precautions to
prevent physical injury.
• Risk of serious injury or death. If any pressure-containing device is over-pressurized, it
can explode, rupture, or discharge its contents. It is critical to take all necessary meas-
ures to avoid over-pressurization.
• Risk of death, serious personal injury, and property damage. Installing, operating, or
maintaining the unit using any method not prescribed in this manual is prohibited. Prohib-
ited methods include any modification to the equipment or use of parts not provided by
ITT. If there is any uncertainty regarding the appropriate use of the equipment, please
contact an ITT representative before proceeding.
1 Introduction and Safety
4 Model 3408 Installation, Operation, and Maintenance Manual

• If the pump or motor is damaged or leaking, electric shock, fire, explosion, liberation of
toxic fumes, physical harm, or environmental damage may result. Do not operate the unit
until the problem has been corrected or repaired.
• Risk of serious personal injury or property damage. Dry running may cause rotating parts
within the pump to seize to non-moving parts. Do not run dry.
• Risk of death, serious personal injury, and property damage. Heat and pressure buildup
can cause explosion, rupture, and discharge of pumpage. Never operate the pump with
suction and/or discharge valves closed.
• Running a pump without safety devices exposes operators to risk of serious personal in-
jury or death. Never operate a unit unless appropriate safety devices (guards, etc.) are
properly installed. See specific information about safety devices in other sections of this
manual.
CAUTION:
•Risk of injury and/or property damage. Operating a pump in an inappropriate application
can cause over pressurization, overheating, and/or unstable operation. Do not change the
service application without the approval of an authorized ITT representative.
WARNING:
This product contains Carbon Black a chemical known to the State of California to cause can-
cer. For more information go to www.P65Warnings.ca.gov
1.2.1 Safety terminology and symbols
About safety messages
It is extremely important that you read, understand, and follow the safety messages and regulations
carefully before handling the product. They are published to help prevent these hazards:
•Personal accidents and health problems
• Damage to the product
• Product malfunction
Hazard levels
Hazard level Indication
DANGER:
A hazardous situation which, if not avoided, will result in death or seri-
ous injury
WARNING:
A hazardous situation which, if not avoided, could result in death or
serious injury
CAUTION:
A hazardous situation which, if not avoided, could result in minor or
moderate injury
NOTICE:
• A potential situation which, if not avoided, could result in unde-
sirable conditions
•A practice not related to personal injury
1.2 Safety
Model 3408 Installation, Operation, and Maintenance Manual 5

Hazard categories
Hazard categories can either fall under hazard levels or let specific symbols replace the ordinary hazard
level symbols.
Electrical hazards are indicated by the following specific symbol:
ELECTRICAL HAZARD:
These are examples of other categories that can occur. They fall under the ordinary hazard levels and
may use complementing symbols:
•Crush hazard
• Cutting hazard
• Arc flash hazard
1.2.1.1 The Ex symbol
The Ex symbol indicates safety regulations for Ex-approved products when used in atmospheres that are
potentially explosive or flammable.
1.2.2 Environmental safety
The work area
Always keep the station clean to avoid and/or discover emissions.
Waste and emissions regulations
Observe these safety regulations regarding waste and emissions:
• Appropriately dispose of all waste.
• Handle and dispose of the processed liquid in compliance with applicable environmental regula-
tions.
• Clean up all spills in accordance with safety and environmental procedures.
• Report all environmental emissions to the appropriate authorities.
WARNING:
If the product has been contaminated in any way, such as from toxic chemicals or nuclear radi-
ation, do NOT send the product to ITT until it has been properly decontaminated and advise
ITT of these conditions before returning.
Electrical installation
For electrical installation recycling requirements, consult your local electric utility.
1.2.2.1 Recycling guidelines
Always follow local laws and regulations regarding recycling.
1.2 Safety
6 Model 3408 Installation, Operation, and Maintenance Manual

1.2.3 User safety
General safety rules
These safety rules apply:
•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.
• Always bear in mind the risk of drowning, electrical accidents, and burn injuries.
Safety equipment
Use safety equipment according to the company regulations. Use this safety equipment within the work
area:
• Hardhat
• Safety goggles, preferably with side shields
• Protective shoes
• Protective gloves
• Gas mask
• Hearing protection
• First-aid kit
• Safety devices
Electrical connections
Electrical connections must be made by certified electricians in compliance with all international, nation-
al, state, and local regulations. For more information about requirements, see sections dealing specifical-
ly with electrical connections.
Noise
WARNING:
Sound pressure levels may exceed 80 dbA in operating process plants. Clear visual warnings
or other indicators should be available to those entering an area with unsafe noise levels. Per-
sonnel should wear appropriate hearing protection when working on or around any equipment,
including pumps. Consider limiting personnel’s exposure time to noise or, where possible, en-
closing equipment to reduce noise. Local law may provide specific guidance regarding expo-
sure of personnel to noise and when noise exposure reduction is required.
Temperature
WARNING:
Equipment and piping surfaces may exceed 130ºF (54ºC) in operating process plants. Clear
visual warnings or other indicators should alert personnel to surfaces that may reach a poten-
tially unsafe temperature. Do not touch hot surfaces. Allow pumps operating at a high tempera-
ture to cool sufficiently before performing maintenance. If touching a hot surface cannot be
avoided, personnel should wear appropriate gloves, clothing, and other protective gear as nec-
essary. Local law may provide specific guidance regarding exposure of personnel to unsafe
temperatures.
1.2 Safety
Model 3408 Installation, Operation, and Maintenance Manual 7

1.2.3.1 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.
• Recognize the site emergency exits, eye wash stations, emergency showers and toilets.
• 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.
1.2.3.2 Precautions during work
Observe these safety precautions when you work with the product or are in connection with the product:
CAUTION:
Failure to observe the instructions contained in this manual could result in personal injury
and/or property damage, and may void the warranty. Read this manual carefully before instal-
ling and using 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.
1.2.3.3 Wash the skin and eyes
1. Follow these procedures for chemicals or hazardous fluids that have come into contact with your
eyes or your skin:
Condition Action
Chemicals or hazardous fluids
in eyes
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.
Chemicals or hazardous fluids
on skin
1. Remove contaminated clothing.
2. Wash the skin with soap and water for at least 1 minute.
3. Seek medical attention, if necessary.
1.2 Safety
8 Model 3408 Installation, Operation, and Maintenance Manual

1.2.4 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 limit-
ed to Europe. You can apply these guidelines to equipment installed in any potentially explosive atmos-
phere.
Guidelines for compliance
WARNING:
Risk of serious personal injury. Applying heat to impellers, propellers, or their retaining devices
can cause trapped liquid to rapidly expand and result in a violent explosion. This manual clear-
ly identifies accepted methods for disassembling units. These methods must be adhered to.
Never apply heat to aid in their removal unless explicitly stated in this manual.
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.
• Any maintenance for Ex-approved products must conform to international and national standards.
Product and product handling requirements
These are the product and product handling requirements for Ex-approved products in potentially explo-
sive atmospheres:
• Only use the product in accordance with the approved motor data.
• The Ex-approved product must never run dry during normal operation. Dry running during service
and inspection is only permitted outside the classified area.
• Before you start work on 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, and that they are in use.
• 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.
• Do not modify the equipment without approval from an authorized ITT representative.
• Only use parts that are provided by an authorized ITT representative.
1.2 Safety
Model 3408 Installation, Operation, and Maintenance Manual 9

Product and product handling requirements
These are the product and product handling requirements for Ex-approved products in potentially explo-
sive 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.
• Move equipment to a safe/non ATEX environment for repairs/adjustments or use spark resistant
tools and work methods.
• Before you start working with the product, make sure that the product and the control panel are iso-
lated 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.
All pumping unit (pump, seal, coupling, motor and pump accessories) certified for use in an ATEX classi-
fied environment, are identified by an ATEX tag secured to the pump or baseplate on which it is mount-
ed. A typical tag would look like this:
Figure 1: ATEX identification
Table 1: Temperature class definitions
Code Maximum permissible surface tem-
perature in °C | °F
Maximum permissible liquid tempera-
ture in °C | °F
T1 440 | 824 372 | 700
T2 290 | 554 267 | 513
T3 195 | 383 172 | 342
T4 130 | 266 107 | 225
T5 Option not available Option not available
T6 Option not available Option not available
1.2 Safety
10 Model 3408 Installation, Operation, and Maintenance Manual

1.2.5 Monitoring equipment
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
• Filter
1.3 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 prod-
ucts.
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
• 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.
1.3 Product warranty
Model 3408 Installation, Operation, and Maintenance Manual 11

2 Transportation and Storage
2.1 Inspect the delivery
2.1.1 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.
2.1.2 Inspect the unit
1. Remove packing materials from the product.
Dispose of all packing materials in accordance with local regulations.
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.
For your personal safety, be careful when you handle nails and straps.
4. Contact your sales representative if anything is out of order.
2.2 Transportation guidelines
2.2.1 Precautions
WARNING:
•Stay clear of suspended loads.
• Observe accident prevention regulations in force.
2.2.2 Lifting methods
WARNING:
•Risk of serious personal injury or equipment damage. Proper lifting practices are critical
to safe transport of heavy equipment. Ensure that practices used are in compliance with
all applicable regulations and standards.
• Safe lifting points are specifically identified in this manual. It is critical to lift the equipment
only at these points. Integral lifting eyes or eye bolts on pump and motor components are
intended for use in lifting the individual components only.
• Lifting and handling heavy equipment poses a crush hazard. Use caution during lifting
and handling and wear appropriate Personal Protective Equipment (PPE, such as steel-
toed shoes, gloves, etc.) at all times. Seek assistance if necessary.
• Do not attach sling ropes to shaft ends.
The unit must be unloaded and handled by lifting equally at four or more points on the baseplate. The
lugs on the upper half casing are designed for lifting the upper half of the casing only.
2 Transportation and Storage
12 Model 3408 Installation, Operation, and Maintenance Manual

Pumps mounted horizontally
Pump mounting Lifting method
A bare pump Place a nylon sling, chain, or wire rope around both bearing housings.
A pump mounted on a base that has
lifting holes
WARNING:
If the driver has been mounted on the baseplate at the
factory, then it is safe to lift the entire assembly.
CAUTION:
Take care to size equipment for unbalanced loads that
may exist if the driver is not mounted on the base at the
time of lifting. The driver may or may not be mounted at
the factory.
Attach nylon slings, chains, or wire rope to ANSI/OSHA Standard S hooks.
Then attach the hooks in the holes provided in the four corners of the base.
Make sure that the points of the hooks do not touch the bottom of the pump
base. Size the equipment for the load so that the lift angle is less than 45°
from the vertical.
A pump mounted on a base that
does not have lifting holes
Place one sling around the outboard bearing housing and place the another
sling around the back-end of the driver as close to the mounting feet as possi-
ble. Make certain that the sling will not damage the housing cover or conduit
boxes. Join the free ends of the slings together and place over the lifting
hook.
45° max
L2
L
Figure 2: The proper lifting method for a horizontal pump on a base with lifting holes
45° max
L2
L
Figure 3: The proper lifting method for a horizontal pump on a base without lifting holes
2.2 Transportation guidelines
Model 3408 Installation, Operation, and Maintenance Manual 13

Pumps mounted vertically
Pump mounting Lifting method
Half pedestal Place a nylon sling chain or wire rope around both flanges. Use a latch hook
or standard shackle and end loops. Be sure the lifting equipment is long
enough to keep the lift angle less than 30° from the vertical.
Full pedestal Install eyebolts in the three holes provided at the top of the support and tight-
en securely. Attach a chain or wire rope using a latch hook or standard shack-
le and end loop. You must use shoulder eyebolts that are manufactured per
ANSI B18.15 and sized to fit the holes provided. Be sure the lifting equipment
is long enough to keep the lift angle less than 30° from the vertical.
130° max
1. Nylon sling, chain, or wire rope
Figure 4: The proper lifting method for a vertical pump mounted on a half pedestal
1
30° max
1. Nylon sling, chain, or wire rope
Figure 5: The proper lifting method for a vertical pump mounted on a full pedestal
2.3 Storage guidelines
2.3.1 Pump storage requirements
Storage requirements depend on the amount of time that you store the unit. The normal packaging is
designed only to protect the unit during shipping.
Length of time in storage Storage requirements
Upon receipt/short-term (less than six
months)
• Store in a covered and dry location.
•Store the unit free from dirt and vibrations.
Long-term (more than six months) • Store in a covered and dry location.
•Store the unit free from heat, dirt, and vibrations.
2.3 Storage guidelines
14 Model 3408 Installation, Operation, and Maintenance Manual

Length of time in storage Storage requirements
• Rotate the shaft by hand several times at least every three months.
Treat bearing and machined surfaces so that they are well preserved. Refer to drive unit and coupling
manufacturers for their long-term storage procedures.
You can purchase long-term storage treatment with the initial unit order or you can purchase it and apply
it after the units are already in the field. Contact your local ITT sales representative.
2.3 Storage guidelines
Model 3408 Installation, Operation, and Maintenance Manual 15

3 Product Description
3.1 General description
Product description
Goulds Model 3408 is a double-suction, horizontally split-case pump. This product line consists of 39
sizes from size 2x3-11 through size 10x12-18.
WARNING:
Use of equipment unsuitable for the environment can pose risks of ignition and/or explosion.
Ensure the pump driver and all other auxiliary components meet the required area classifica-
tion at the site. If they are not compatible, do not operate the equipment and contact an ITT
representative before proceeding.
Casing
The axially split, double-volute casing is constructed of cast iron, for working pressures up to 175 psig, or
ductile iron, for working pressures up to 400 psig. Suction and discharge flanges and mounting feet are
cast integral with the lower half of the casing.
Tapped and plugged holes are provided for priming, vent, drain, and gauge connections. The upper half
of the casing can be removed without disturbing suction or discharge piping. Flanges are ASA Standard
125/125#, 125/250#, or 250/250#. Suction and discharge are on a common centerline in both the hori-
zontal and vertical planes.
Impeller
• Enclosed, double suction
• Bronze
• Statically and hydraulically balanced
• Keyed to the shaft
• Positioned axially by the shaft sleeves
• Hub with sufficient metal thickness to allow machining for installation of impeller rings
Shaft
• The shaft is made of SAE 1045 steel, 316 stainless steel, or heat-treated 416 stainless steel. AISI
4140 steel is standard on 4x6-11, 6x8-12M, and 8x10-20S/L, 10x12-18. These sizes are not availa-
ble in 1045 or 316.
• The shaft size allows for operation under load with a minimum of deflection.
Shaft sleeves
• Bronze, 420 hardened stainless steel (packing only), 316 stainless steel, or cast iron
• Protect the shaft from wear and from contact with the pumped fluid
• An O-ring under the sleeve to prevent leaks
Stuffing box
• Made of cast iron separate from the casing
• Mounted in cylindrical fits in the casing
• Drilled and tapped for drain connection
3 Product Description
16 Model 3408 Installation, Operation, and Maintenance Manual

Casing rings
•Made of bronze, cast iron, or Nitronic 60 stainless steel
• Installed with an anti-rotation device
• Designed to restrict leakage across the ring fit
Bearings
• Grease lubricated or oil lubricated
• Inboard, or coupling end, bearing: single row ball bearing
• Outboard bearing: double row cylindrical roller bearing, retained by a bearing locknut and lock-
washer
Bearing housing
The bearing housings are bolted to the ends of the bearing bracket/stuffing box and are male-female fit-
ted for a full 360 degrees to assure positive alignment.
The housings provide a fit for the inboard bearing that allows freedom for thermal expansion. The out-
board bearing is clamped in place in order to take all thrust loads and to keep the rotating element in its
proper axial location. Openings for adding new grease and draining old grease are provided.
Baseplate
• Sufficiently rigid to support the pump and driver
• Steel construction
Coupling
The coupling is flexible. Coupling hubs are secured to the driver and driven shafts by a setscrew located
over the key.
WARNING:
The coupling used in an ATEX classified environment must be properly certified.
Coupling guard
The coupling guard is all metal.
WARNING:
The coupling guard used in an ATEX classified environment must be properly certified and
constructed from a spark resistant material.
Rotation
The pump has a clockwise or counterclockwise rotation when viewed from the drive end.
3.2 Nameplate information
Important information for ordering
Every pump has nameplates that provide information about the pump. The nameplates are located on
the casing and the bearing frame.
3.2 Nameplate information
Model 3408 Installation, Operation, and Maintenance Manual 17

When you order spare parts, identify this pump information:
• Model
• Size
• Serial number
• Item numbers of the required parts
Item numbers can be found in the spare parts list.
Refer to the nameplate on the pump casing for most of the information. See Parts List for item numbers.
Nameplate types
Nameplate Description
Pump casing Provides information about the hydraulic characteristics of the pump.
Pump The formula for the pump size is: Discharge x Suction - Nominal Maximum Impeller Diameter in
inches.
(Example: 2x3-8)
Bearing frame Provides information about the lubrication system used.
Nameplate on the pump casing using English units
Figure 6: Nameplate on the pump casing using English units
Table 2: Explanation of nameplate on the pump casing
Nameplate field Explanation
IMPLR. DIA. Impeller diameter, in inches
MAX. DIA. Maximum impeller diameter, in inches
GPM Rated pump flow, in gallons per minute
FT HD Rated pump head, in feet
RPM Rated pump speed, revolutions per minute
MOD. Pump model
SIZE Size of the pump
STD. NO. ANSI standard designation
MAT L. CONST. Material of which the pump is constructed
SER. NO. Serial number of the pump
MAX DSGN PSI @
100ºF
Maximum pressure at 100ºF according to the pump design
3.2 Nameplate information
18 Model 3408 Installation, Operation, and Maintenance Manual