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3700
Installation, Operation And Maintenance Manual
108 pgs10.23 Mb0
Installation, Operation And Maintenance Manual
118 pgs3.33 Mb0
User Manual
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Goulds Pumps 3700 User Manual

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Page 1
Page 2
Page 3
Table of Contents
Introduction and Safety .......................................................................................................... 4
Introduction ............................................................................................................................. 4
Safety ...................................................................................................................................... 4
Safety terminology and symbols ........................................................................................... 5
Environmental safety ............................................................................................................ 5
User safety ........................................................................................................................... 6
Product approval standards .................................................................................................. 7
Safety regulations for Ex-approved products in potentially explosive atmospheres ............. 7
Product warranty ..................................................................................................................... 8
Transportation and Storage ................................................................................................. 10
Inspect the delivery ............................................................................................................... 10
Transportation guidelines ...................................................................................................... 10
Storage guidelines ................................................................................................................ 12
Frostproofing ......................................................................................................................... 13
Table of Contents
Product Description .............................................................................................................. 14
General description 3700 ...................................................................................................... 14
Nameplate information .......................................................................................................... 15
Installation ............................................................................................................................. 19
Preinstallation ....................................................................................................................... 19
Baseplate-mounting procedures ........................................................................................... 20
Install the pump, driver, and coupling .................................................................................... 22
Pump-to-driver alignment ...................................................................................................... 23
Grout the baseplate .............................................................................................................. 27
Piping checklists ................................................................................................................... 29
Commissioning, Startup, Operation, and Shutdown ......................................................... 35
Preparation for startup .......................................................................................................... 35
Remove the coupling guard .................................................................................................. 36
Check the rotation - Frame Mounted ..................................................................................... 37
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 1 Manual
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Table of Contents
Couple the pump and driver .................................................................................................. 37
Shaft sealing with a mechanical seal .................................................................................... 49
Connection of sealing liquid for mechanical seals ................................................................. 49
Pump priming ........................................................................................................................ 49
Prime the pump with the suction supply below the pump ................................................... 50
Start the pump ...................................................................................................................... 52
Pump operation precautions ................................................................................................. 53
Shut down the pump ............................................................................................................. 54
Make the final alignment of the pump and driver ................................................................... 54
Dowel the pump casing (optional) ......................................................................................... 54
Maintenance ........................................................................................................................... 56
Maintenance schedule .......................................................................................................... 56
Bearing maintenance ............................................................................................................ 57
Mechanical-seal maintenance .............................................................................................. 57
Disassembly ......................................................................................................................... 58
Remove the seal-chamber cover ........................................................................................ 62
Preassembly inspections ...................................................................................................... 69
Bearing-frame inspection ................................................................................................... 80
Reassembly .......................................................................................................................... 81
Install the impeller (3700LF) ............................................................................................... 97
Troubleshooting .................................................................................................................. 102
Operation troubleshooting ................................................................................................... 102
Alignment troubleshooting .................................................................................................. 103
2 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
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Table of Contents
Assembly troubleshooting ................................................................................................... 103
Parts Listings and Cross-Sectionals ................................................................................. 104
Parts list .............................................................................................................................. 104
Local ITT Contacts .............................................................................................................. 106
Regional offices .................................................................................................................. 106
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 3 Manual
Page 6

Introduction and Safety

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.
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 considered in this manual or in the sales documents, please contact the nearest ITT representative.
Always specify the exact product type and identification code when requesting technical information or spare parts.

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 over­pressurized. 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.
• This manual clearly identifies 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 unless explicitly stated in this manual.
• If the pump/motor is damaged or leaking, do not operate as it may cause an electric shock, fire, explosion, liberation of toxic fumes, physical harm, or environmental damage. Correct/repair the problem prior to putting back in service.
• Do not change the service application without the approval of an authorized ITT representative.
CAUTION:
You must observe the instructions contained in this manual. Failure to do so could result in physical injury, damage, or delays.
4 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
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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: result in death or serious injury
Introduction and Safety
A hazardous situation which, if not avoided, will
Hazard categories
WARNING: result in death or serious injury
CAUTION: result in minor or moderate injury
NOTICE:
A hazardous situation which, if not avoided, could
A hazardous situation which, if not avoided, could
• A potential situation which, if not avoided, could result in undesirable conditions
• A practice not related to personal injury
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

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 regulations.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 5 Manual
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Introduction and Safety
WARNING:
Do NOT send the product to the ITT manufacturer if it has been contaminated by any nuclear radiation. Inform ITT so that accurate actions can take place.
Electrical installation
For electrical installation recycling requirements, consult your local electric utility.
Recycling guidelines
Always follow local laws and regulations regarding recycling.

User safety

General safety rules
These safety rules apply:
• Clean up all spills in accordance with safety and environmental procedures.
• Report all environmental emissions to the appropriate authorities.
• 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:
• Helmet
• Safety goggles, preferably with side shields
• Protective shoes
• Protective gloves
• Gas mask
• Hearing protection
• First-aid kit
• Safety devices
NOTICE:
Never operate a unit unless safety devices are installed. Also see specific information about safety devices in other chapters of this manual.
Electrical connections
Electrical connections must be made by certified electricians in compliance with all internation­al, national, state, and local regulations. For more information about requirements, see sections dealing specifically with electrical connections.
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.
• Make sure that the equipment is properly insulated when it operates at extreme temperatures.
• Allow all system and pump components to cool before you handle them.
• Make sure that you have a clear path of retreat.
6 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
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• 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.
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
Chemicals or hazardous fluids on skin

Product approval standards

Introduction and Safety
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 1 minute.
3. Seek medical attention, if necessary.
Regular standards
All standard products are approved according to CSA standards in Canada and UL standards in USA. The drive unit degree of protection follows IP68. See the nameplate for maximum submersion, according to standard IEC 60529.
All electrical ratings and performance of the motors comply with IEC 600341.

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.
Guidelines for compliance
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 explosion-proof pumps, follow these guidelines:
• Always install ATEX-approved equipment in compliance with the directive and applicable standards (IEC/EN 60079–14).
• Do not install explosion proof products in locations that are classified as hazardous in the national electric code, ANSI/NFPA 70–2005.
WARNING:
This manual clearly identifies 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 unless explicitly stated in this manual.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 7 Manual
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Introduction and Safety
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 (for example 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.
• 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.
• 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

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.
8 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
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Limitations
Introduction and Safety
• 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.
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.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 9 Manual
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Transportation and Storage

Transportation and Storage

Inspect the delivery

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.

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.

Transportation guidelines

Pump handling

WARNING:
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:
Table 1: Methods
Pump type Lifting method
A bare pump without lifting han- Use a suitable sling attached properly to solid points like the casing, dles the flanges, or the frames.
A bare pump with lifting handles Lift the pump by the handles. A base-mounted pump Use slings under the pump casing and the drive unit, or under the base
• Make sure that the unit 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.
• 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 steel-toed shoes at all times.
• Do not attach sling ropes to shaft ends.
rails.
10 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
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Examples
Transportation and Storage
Figure 1: Example of a proper lifting method
Figure 2: Example of a proper lifting method
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 11 Manual
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Transportation and Storage
Figure 3: Example of a proper lifting method
Figure 4: Example of offset overhead motor mount pump proper lifting method

Storage guidelines

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)
12 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
• Store in a covered and dry location.
• Store the unit free from dirt and vibrations.
Manual
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Length of time in storage Storage requirements
Long-term (more than six 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.

Frostproofing

Table 2: Situations when the pump is or is not frostproof
Situation Condition
Operating The pump is frostproof. Immersed in a liquid The pump is frostproof. Lifted out of a liquid into a temperature below The impeller might freeze.
freezing
Transportation and Storage
• Store in a covered and dry location.
• Store the unit free from heat, dirt, and vibra­tions.
• Rotate the shaft by hand several times at least every three months.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 13 Manual
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Product Description

Product Description

General description 3700

Product description
The Model 3700 is a high-pressure, high-temperature centrifugal pump that meets the requirements of API Standard 610 10th Edition (ISO 13709).
Casing
Impeller
Figure 5: 3700 pump
The casing is a centerline-mounted design. The gasket is fully confined. The standard flanges are ANSI Class 300 raised-face serrated. The following flanges are also
available:
• ANSI Class 300 flat-face serrated
• ANSI Class 300 ring joint
• ANSI Class 600 flat-face serrated
• ANSI Class 600 ring joint
Flange Orientation
• End Suction (3700/3700LF/3703)
• Top Suction (3710)
The impeller is fully enclosed and key driven by the shaft. One of the following parts prevents axial movement:
• Impeller bolt with a lockwasher
• Impeller nut with a locking set screw
Table 3: Impeller
3700/3710 3700LF/3703
Enclosed Impeller Semi-open Impeller
14 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
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Seal-chamber cover
Power end
Shaft
Bearings
Product Description
The seal-chamber cover meets API 682 3rd Edition dimensions for improved performance of mechanical seals.
The power end has the following characteristics:
• Standard ring oil-lubricated bearings
• Labyrinth seals on the power end
• Optional pure and purge oil mist lubrication (some machining is required to convert from ring oil lubrication to oil mist)
The standard shaft is machined and ground to comply with API 610 11th Edition (ISO 13709) criteria.
Bearing type Characteristics
Inboard (radial)
Outboard (thrust)
• Consists of a single-row deep-groove ball bearing
• Carries only radial load
• Freely floats axially in the frame
• Consists of a duplex-angular contact bearing, which uses a pair of single-row angular contact ball bearings mounted back-to-back
• Shouldered and locked to the shaft
• Retained in the bearing frame to enable it to carry radial and thrust loads
All fits are precision-machined to industry standards.
Baseplate
The fabricated steel baseplate supports the pump, driver, and accessories in accordance with API-610 11th Edition (ISO 13709) requirements.
Direction of rotation
The shaft rotates counterclockwise when viewed from the drive end.

Nameplate information

Important information for ordering
Every pump has a nameplate that provides information about the pump. The nameplate is located on the pump casing.
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.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 15 Manual
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Product Description
Nameplate types
Nameplate Description
Pump casing Provides information about the hydraulic characteristics of the pump.
The formula for the pump size is: Discharge x Suction - Nominal Maximum Impeller Diameter in inches.
(Example: 2x3-8)
ATEX If applicable, your pump unit might have an ATEX nameplate affixed to the pump, the
IECEx If applicable, your pump unit might have the following IECEx nameplate affixed to the
baseplate, or the discharge head. The nameplate provides information about the ATEX specifications of this pump.
pump and/or baseplate. The nameplate provides information about the IECEx specifications of this pump.
Nameplate on the pump casing using English units
Nameplate field Explanation
MODEL Pump model SIZE Size of the pump FLOW Rated pump flow, in gallons per minute HEAD Rated pump head, in feet RPM Rated pump speed, in revolutions per minute HYDRO PRESS Hydrostatic pressure at 100°F, in pounds per square inch MAX. DES. WORKING Maximum working pressure at temperature °F, in pounds per square inch
PRESS S/N Serial number of the pump CONT./ITEM NO. Customer contract or item number IMP. DIA. Rated impeller diameter MAX. DIA. Maximum impeller diameter STD. DIM. Standard ANSI dimensional code MAT'L Material of construction
16 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
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Nameplate on the pump casing using metric units
Nameplate field Explanation
MODEL Pump model SIZE Size of the pump FLOW Rated pump flow, in gallons per minute HEAD Rated pump head, in feet RPM Rated pump speed, in revolutions per minute HYDRO PRESS Hydrostatic pressure at 38°C, in pounds per square inch MAX. DES. WORKING Maximum working pressure at temperature °C, in pounds per square inch
PRESS S/N Serial number of the pump CONT./ITEM NO. Customer contract or item number IMP. DIA. Rated impeller diameter MAX. DIA. Maximum impeller diameter STD. DIM. Standard ANSI dimensional code MAT'L Material of construction
Product Description
Nameplate on the bearing frame
Table 4: Explanation of the nameplate on the bearing frame
Nameplate field Explanation
BRG. O. B. Outboard bearing designation BRG. I. B. Inboard bearing designation S/N Serial number of the pump LUBE Lubricant, oil or grease
ATEX nameplate
Nameplate field Explanation
II Group 2 2 Category 2 G/D Pump can be used when gas and dust are present T4 Temperature class
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 17 Manual
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Product Description
Table 5: Temperature class definitions
Code Maximum permissible surface Minimum permissible surface
temperature in °F (°C) temperature in °F (°C)
T1 842 (450) 700 (372) T2 572 (300) 530 (277) T3 392 (200) 350 (177) T4 275 (135) 235 (113) T5 212 (100) Option not available T6 185 (85) Option not available
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.
18 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
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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.
• Electrical Connections must be made by certified electricians in compliance with all international, national, state, and local rules.
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.

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.
Installation
Guideline Explanation/comment
Keep the pump as close to the liquid source as This minimizes the friction loss and keeps the practically possible. suction piping as short as possible.
Make sure that the space around the pump is This facilitates ventilation, inspection, maintenance, sufficient. and service.
If you require lifting equipment such as a hoist or This makes it easier to properly use the lifting tackle, make sure that there is enough space above equipment and safely remove and relocate the the pump. components to a safe location.
Protect the unit from weather and water damage This is applicable if nothing else is specified. due to rain, flooding, and freezing temperatures.
Do not install and operate the equipment in closed Acceptable devices: systems unless the system is constructed with properly-sized safety devices and control devices.
Take into consideration the occurrence of unwanted The best pump location for noise and vibration noise and vibration. absorption is on a concrete floor with subsoil
If the pump location is overhead, undertake special Consider a consultation with a noise specialist. precautions to reduce possible noise transmission.

Foundation requirements

Requirements
• The foundation must be able to absorb any type of vibration and form a permanent, rigid support for the unit.
• The location and size of the foundation bolt holes must match those shown on the assembly drawing provided with the pump data package.
• The foundation must weigh between two and three times the weight of the pump.
• 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.
underneath.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 19 Manual
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Installation
Sleeve-type bolts
• Provide a flat, substantial concrete foundation in order to prevent strain and distortion when you tighten the foundation bolts.
• Sleeve-type and J-type foundation bolts are most commonly used. Both designs allow movement for the final bolt adjustment.
1. Baseplate
2. Shims or wedges
3. Foundation
4. Sleeve
5. Dam
6. Bolt
J-type bolts
1. Baseplate
2. Shims or wedges
3. Foundation
4. Dam
5. Bolt

Baseplate-mounting procedures

Prepare the baseplate for mounting

This procedure assumes you have a basic knowledge of baseplate and foundation design and installation methods. Follow industry-standard procedures, such as API RP 686/ PIP REIE 686, or this procedure before you grout the baseplate.
1. Make sure that all baseplate surfaces that will contact grout are free from contamination such as rust, oil, and grime.
2. Thoroughly clean all baseplate surfaces that will come in contact with grout. Make sure to use a cleaner that will not leave residue.
20 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
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NOTICE:
You may need to sandblast the surfaces of a baseplate that come in contact with grout, and then coat those surfaces with a primer that is grout-compatible. Make sure to remove all equipment before sandblasting.
3. Make sure that all machined surfaces are free from burrs, rust, paint, or any other type of contamination. If necessary, use a honing stone to remove burrs.

Prepare the foundation for mounting

1. Chip the top of the foundation to a minimum of 1.0 in. (25.0 mm) in order to remove porous or low-strength concrete. If you use a pneumatic hammer, make sure that it does not contaminate the surface with oil or other moisture.
NOTICE:
Do not chip the foundation using heavy tools such as jackhammers. This can damage the structural integrity of the foundation.
2. Remove water or debris from the foundation bolt holes or sleeves.
3. If the baseplate uses sleeve-type bolts, then fill the sleeves with a non-binding, moldable material. Seal the sleeves in order to prevent the grout from entering.
4. Coat the exposed portion of the anchor bolts with a non-bonding compound such as paste wax in order to prevent the grout from adhering to the anchor bolts. Do not use oils or liquid wax.
5. If recommended by the grout manufacturer, coat the foundation surface with a compatible primer.
Installation

Install the baseplate using jackscrews

Tools required:
• Anti-seize compound
• Jackscrews
• Bar stock
• Two machinist's levels
This procedure is applicable to the feature-fabricated steel baseplate and the advantage base baseplate.
1. Apply an anti-seize compound on the jackscrews. The compound makes it easier to remove the screws after you grout.
2. Lower the baseplate carefully onto the foundation bolts and perform these steps: a) Cut the plates from the bar stock and chamfer the edges of the plates in order to reduce
stress concentrations. b) Put the plates between the jackscrews and the foundation surface. c) Use the four jackscrews in the corners in order to raise the baseplate above the
foundation.
Make sure that the distance between the baseplate and the foundation surface is
between 0.75 in. (19 mm) and 1.50 in. (38 mm).
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 21 Manual
Page 24
Installation
d) Make sure that the center jackscrews do not touch the foundation surface yet.
1. Jackscrew
2. Baseplate
3. Foundation
4. Plate
3. Level the driver mounting pads:
NOTICE:
Remove all dirt from the mounting pads in order to make sure that you achieve the correct leveling. Failure to do so can result in equipment damage or decreased performance.
a) Put one machinist's level lengthwise on one of the two pads. b) Put the other machinist's level across the ends of the two pads. c) Level the pads by adjusting the four jackscrews in the corners.
Make sure that the machinist's level readings are as close to zero as possible, both
lengthwise and across.
4. Turn the center jackscrews down so that they rest on their plates on the foundation surface.
5. Level the pump mounting pads:
NOTICE:
Remove all dirt from the mounting pads in order to make sure that you achieve the correct leveling. Failure to do so can result in equipment damage or decreased performance.
a) Put one machinist's level lengthwise on one of the two pads. b) Put the other level across the center of the two pads. c) Level the pads by adjusting the four jackscrews in the corners.
Make sure that the machinist's level readings are as close to zero as possible, both
lengthwise and across.
6. Hand-tighten the nuts for the foundation bolts.
7. Check that the driver's mounting pads are level and adjust the jackscrews and the foundation bolts if necessary. The correct level measurement is a maximum of 0.002 in./ft (0.0167 mm/m).
The maximum variation from one side of the baseplate to the other is 0.015 in. (0.38 mm).

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.
22 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Page 25

Pump-to-driver alignment

Precautions
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.
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.
Alignment methods
Three common alignment methods are used:
• Dial indicator
• Reverse dial indicator
• Laser
Follow the instructions from the equipment manufacturer when you use the reverse dial indicator or laser methods. Detailed instructions for using the dial indicator method are contained in this chapter.
Installation

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.
Types of alignment checks
Type of check When it is used
Initial alignment (cold alignment) Prior to operation when the pump and the driver are at ambient check temperature.
Final alignment (hot alignment) After operation when the pump and the driver are at operating check temperature.
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
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.
process.
If changes have occurred, you must alter the piping to remove pipe strains on the pump flanges.
are at operating temperature.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 23 Manual
Page 26
Installation

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.
IMPORTANT
• For electric motors, the motor shaft initial (cold) parallel vertical alignment setting should be 0.002 to 0.004 in. (0.05 to 0.10 mm) lower than the pump shaft.
• For other drivers such as turbines and engines, follow the driver manufacturer's recommendations.
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 This prevents incorrect measurement. 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 This prevents strain on the piping installations. adjustments.
Make sure that the hold-down bolts for the driver This keeps the driver stationary since movement feet are tight when you take indicator measure- causes incorrect measurement. ments.
Make sure that the hold-down bolts for the driver This makes it possible to move the driver when you feet are loose before you make alignment correc- make alignment corrections. tions.
Check the alignment again after any mechanical This corrects any misalignments that an adjustment adjustments. 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). This indicator is used to measure parallel misalignment.
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.
24 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Page 27
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.

Pump-to-driver alignment instructions

Perform angular alignment for a vertical correction
1. Set the angular alignment indicator to zero at the top-center position (12 o’clock) of the driver coupling half (Y).
2. Rotate the indicator to the bottom-center position (6 o’clock).
3. Record the indicator reading.
When the reading value is... Then...
Negative The coupling halves are farther apart at the
Positive The coupling halves are closer at the bottom than
Installation
bottom than at the top. Perform one of these steps:
• Add shims in order to raise the feet of the driver at the shaft end.
• Remove shims in order to lower the feet of the driver at the other end.
at the top. Perform one of these steps:
• Remove shims in order to lower the feet of the driver at the shaft end.
• Add shims in order to raise the feet of the driver at the other end.
1. Shims
Figure 6: Example of incorrect vertical alignment (side view)
4. Repeat the previous steps until the permitted reading value is achieved.
Perform angular alignment for a horizontal correction
1. Set the angular alignment indicator (A) to zero on left side of the driver coupling half (Y), 90° from the top-center position (9 o’clock).
2. Rotate the indicator through the top-center position to the right side, 180° from the start position (3 o’clock).
3. Record the indicator reading.
When the reading value is... Then...
Negative The coupling halves are farther apart on the right side than
Positive The coupling halves are closer together on the right side
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 25 Manual
the left. Perform one of these steps:
• Slide the shaft end of the driver to the left.
• Slide the opposite end to the right.
than the left. Perform one of these steps:
• Slide the shaft end of the driver to the right.
• Slide the opposite end to the left.
Page 28
Installation
Figure 7: Example of incorrect horizontal alignment (top view)
4. Repeat the previous steps until the permitted reading value is achieved.
Perform parallel alignment for a vertical correction
Refer to the alignment table in "Permitted indicator values for alignment checks" (see Table of Contents for location of table) for the proper cold alignment value based on the motor temperature rise and the pump operating temperature.
Before you start this procedure, make sure that the dial indicators are correctly set up. A unit is in parallel alignment when the parallel indicator (P) does not vary by more than
0.002 in. (0.05 mm) as measured at four points 90° apart at the operating temperature.
1. Set the parallel alignment indicator (P) to zero at the top-center position (12 o’clock) of the driver coupling half (Y).
2. Rotate the indicator to the bottom-center position (6 o’clock).
3. Record the indicator reading.
When the reading value is... Then...
Negative The pump coupling half (X) is lower than the
Positive The pump coupling half (X) is higher than the
driver coupling half (Y). Remove shims of a thickness equal to half of the indicator reading value under each driver foot.
driver coupling half (Y). Add shims of a thickness equal to half of the indicator reading value to each driver foot.
NOTICE:
1. Shims
Figure 8: Example of incorrect vertical alignment (side view)
4. Repeat the previous steps until the permitted reading value is achieved.
Perform parallel alignment for a horizontal correction
A unit is in parallel alignment when the parallel indicator (P) does not vary by more than
0.002 in. (0.05 mm) as measured at four points 90° apart at the operating temperature.
1. Set the parallel alignment indicator (P) to zero on the left side of the driver coupling half (Y), 90° from the top-center position (9 o’clock).
2. Rotate the indicator through the top-center position to the right side, 180° from the start position (3 o’clock).
3. Record the indicator reading.
26 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Page 29
When the reading value is... Then...
Negative The driver coupling half (Y) is to the left of the
Positive The driver coupling half (Y) is to the right of the
4. Slide the driver carefully in the appropriate direction.
NOTICE:Make sure to slide the driver evenly. Failure to do so can negatively affect horizontal angular correction.
Figure 9: Example of incorrect horizontal alignment (top view)
5. Repeat the previous steps until the permitted reading value is achieved.
Perform complete alignment for a vertical correction
A unit is in complete alignment when both the angular indicator (A) and the parallel indicator (P) do not vary by more than 0.002 in. (0.05 mm) as measured at four points 90° apart.
1. Set the angular and parallel dial indicators to zero at the top-center position (12 o’clock) of the driver coupling half (Y).
2. Rotate the indicators to the bottom-center position (6 o’clock).
3. Record the indicator readings.
4. Make corrections according to the separate instructions for angular and parallel alignment until you obtain the permitted reading values.
Perform complete alignment for a horizontal correction
A unit is in complete alignment when both the angular indicator (A) and the parallel indicator (P) do not vary by more than 0.002 in. (0.05 mm) as measured at four points 90° apart.
1. Set the angular and parallel dial indicators to zero at the left side of the driver coupling half (Y), 90° from the top-center position (9 o’clock).
2. Rotate the indicators through the top-center position to the right side, 180° from the start position (3 o’clock).
3. Record the indicator readings.
4. Make corrections according to the separate instructions for angular and parallel alignment until you obtain the permitted reading values.
Installation
pump coupling half (X).
pump coupling half (X).

Grout the baseplate

Required equipment:
• Cleaners: Do not use an oil-based cleaner because the grout will not bond to it. See the instructions provided by the grout manufacturer.
• Grout: Non-shrink grout is recommended.
NOTICE:
It is assumed that the installer who grouts the baseplate has knowledge of acceptable methods. More detailed procedures are described in various publications, including API Standard 610, latest edition, Appendix L; API RP 686, Chapter 5; and other industry standards.
1. Clean all the areas of the baseplate that will come into contact with the grout.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 27 Manual
Page 30
Installation
2. Build a dam around the foundation.
3. Thoroughly wet the foundation that will come into contact with the grout.
4. Pour grout through the grout hole into the baseplate up to the level of the dam. When you pour the grout, remove air bubbles from it by using one of these methods:
• Puddle with a vibrator.
• Pump the grout into place.
5. Allow the grout to set.
1. Baseplate
2. Shims or wedges
3. Grout
4. Foundation
5. Sleeve
6. Dam
7. Bolt
6. Fill the remainder of the baseplate with grout, and allow the grout to set for at least 48 hours.
1. Baseplate
2. Grout
3. Foundation
4. Dam
5. Bolt
7. Remove the leveling jackscrews after the grout hardens in order to remove any stress points.
8. Tighten the foundation bolts.
28 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Page 31

Piping checklists

General piping checklist

Precautions
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.
CAUTION:
Flange loads from the piping system, including those from the thermal expansion of the piping, must not exceed the limits of the pump. Casing deformation can result in contact with rotating parts, which can result in excess heat generation, sparks, and premature failure.
Piping guidelines
Guidelines for piping are given in the Hydraulic Institute Standards available from the Hydraulic Institute at 9 Sylvan Way, Parsippany, NJ 07054-3802. You must review this document before you install the pump.
Installation
Checklist
Check Explanation/comment Checked
Check that all piping is supported This helps to prevent: independently of, and lined up naturally with, the pump flange.
See Alignment criteria for pump • Wear on the pump bearings and the coupling flanges. • Wear on the pump bearings, seal, and shafting
Keep the piping as short as pos- This helps to minimize friction losses. sible.
Check that only necessary fittings This helps to minimize friction losses. 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 This prevents air from entering the piping system or and fittings are airtight. leaks that occur during operation.
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 This helps to prevent misalignment due to linear expan­elevated temperatures, make sion of the piping. sure that the expansion loops and joints are properly installed.
• Strain on the pump
• Misalignment between the pump and the drive unit
Alignment criteria for pump flanges
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./
Concentric You can easily install the flange bolts by hand.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 29 Manual
in. maximum (0.025 mm/mm to 0.8 mm/mm) of the flange diameter.
Page 32
Installation
Example: Installation for expansion
Correct Incorrect
1. Expansion loop/joint

Suction-piping checklist

Performance curve reference
Net positive suction head available (NPSHA) must always exceed NPSH required (NPSHR) as shown on the published performance curve of the pump.
Suction-piping checks
Check Explanation/comment Checked
Check that the distance between This minimizes the risk of cavita­the inlet flange of the pump and tion in the suction inlet of the the closest elbow is at least five pump due to turbulence. pipe diameters.
Check that elbows in general do See the Example sections for il­not have sharp bends. lustrations.
Check that the suction piping is The suction piping must never one or two sizes larger than the have a smaller diameter than the suction inlet of the pump. suction inlet of the pump.
Install an eccentric reducer be- See the Example sections for il­tween the pump inlet and the lustrations. suction piping.
Check that the eccentric reducer See the example illustrations. at the suction flange of the pump has the following properties:
• Sloping side down
• Horizontal side at the top
When suction strainers or suction Suction strainers help to prevent bells are used, check that they are clogging. at least three times the area of the suction piping.
If more than one pump operates This recommendation helps you to from the same liquid source, achieve a higher pump perfor­check that separate suction-piping mance. lines are used for each pump.
If necessary, make sure that the — suction piping includes a drain valve and that it is correctly in­stalled.
See the Example sections for il­lustrations.
Mesh holes with a minimum diam­eter of 1/16 in. (1.6 mm) are recommended.
30 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Page 33
Liquid source below the pump
Check Explanation/comment Checked
Make sure that the suction piping This helps to prevent the occur­is free from air pockets. rence of air and cavitation in the
Check that the suction piping — slopes upwards from the liquid source to the pump inlet.
If the pump is not self-priming, Use a foot valve with a diameter check that a device for priming the that is at least equivalent to the pump is installed. diameter of the suction piping.
Liquid source above the pump
Check Explanation/comment Checked
Check that an isolation valve is This permits you to close the line installed in the suction piping at a during pump inspection and main­distance of at least two times the tenance. pipe diameter from the suction inlet.
Make sure that the suction piping This helps to prevent the occur­is free from air pockets. rence of air and cavitation in the
Check that the piping is level or — slopes downward from the liquid source.
Make sure that no part of the — suction piping extends below the suction flange of the pump.
Make sure that the suction piping This prevents air from entering the is adequately submerged below pump through a suction vortex. the surface of the liquid source.
Installation
pump inlet.
Do not use the isolation valve to throttle the pump. Throttling can cause these problems:
• Loss of priming
• Excessive temperatures
• Damage to the pump
• Voiding the warranty
pump inlet.
Example: Elbow close to the pump suction inlet
Correct Incorrect
The correct distance between the inlet flange of the pump and the closest elbow must be at least five pipe diameters.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 31 Manual
Page 34
Installation
Example: Suction piping equipment
Correct Incorrect
1. Suction pipe sloping upwards from liquid source
2. Long-radius elbow
3. Strainer
4. Foot valve
5. Eccentric reducer with a level top

Discharge piping checklist

Checklist
Check Explanation/comment Checked
Check that an isolation valve is in- The isolation valve is required for: stalled in the discharge line.
Check that a check valve is installed in The location between the isolation valve and the the discharge line, between the isola- pump allows inspection of the check valve. tion valve and the pump discharge outlet.
If increasers are used, check that they See Example: Discharge piping equipment for are installed between the pump and illustrations. the check valve.
If quick-closing valves are installed in This protects the pump from surges and water the system, check that cushioning de- hammer. vices are used.
1. Air pocket, because the eccentric reducer is not used and because the suction piping does not slope gradually upward from the liquid source
• Priming
• Regulation of flow
• Inspection and maintenance of the pump See Example: Discharge piping equipment for illustrations.
The check valve prevents damage to the pump and seal due to the back flow through the pump, when the drive unit is shut off. It is also used to restrain the liquid flow.
See Example: Discharge piping equipment for illustrations.
32 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Page 35
Example: Discharge piping equipment
Correct Incorrect
Installation
1. Bypass line
2. Shut-off valve
3. Check valve
4. Discharge isolation valve

Bypass-piping considerations

When to use a bypass line
Provide a bypass line for systems that require operation at reduced flows for prolonged periods. Connect a bypass line from the discharge side (before any valves) to the source of suction.
When to install a minimum-flow orifice
You can size and install a minimum-flow orifice in a bypass line in order to prevent bypassing excessive flows. Consult your ITT representative for assistance in sizing a minimum-flow orifice.
When a minimum-flow orifice is unavailable
Consider an automatic recirculation control valve or solenoid-operated valve if a constant bypass (minimum-flow orifice) is not possible.

Auxiliary-piping checklist

Precautions
WARNING:
• 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.
1. Check valve (incorrect position)
2. The isolation valve should not be positioned between the check valve and the pump.
NOTICE:
The mechanical seal must have an appropriate seal-flush system. Otherwise, excess heat generation and seal failure can occur.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 33 Manual
Page 36
Installation
When to install
You may need to install auxiliary piping for bearing cooling, seal-chamber cover cooling, mechanical seal flush, or other special features supplied with the pump. Consult the pump data sheet for specific auxiliary piping recommendations.
Checklist
Check Explanation/comment Checked
Check that the minimum flow for Make sure that these guidelines each component is 1 gpm (4 lpm). are followed.
If the bearing and seal chamber cover cooling are provided, then the auxiliary piping must flow at 2 gpm (8 lpm).
Check that the cooling water pres- Make sure that these guidelines sure does not exceed 100 psig are followed. (7.0 kg/cm2).

Final piping checklist

Check Explanation/comment Checked
Check that the shaft rotates Rotate the shaft by hand. Make smoothly. sure there is no rubbing that can
Re-check the alignment to make If pipe strain exists, then correct sure that pipe strain has not the piping. caused any misalignment.
lead to excess heat generation or sparks.
34 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Page 37

Commissioning, Startup, Operation, and Shutdown

Commissioning, Startup, Operation, and Shutdown

Preparation for startup

DANGER:
Avoid death or serious injury. Explosion and/or seizure of pump can cause fire and/or burns. Never operate pump past the pressure and temperature limits shown on the nameplate on the pump.
WARNING:
• Failure to follow these precautions before you start the unit will lead to serious personal injury and equipment failure.
• Never operate the pump below the minimum rated flow, when dry, or without prime.
• 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.
• Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Operating the pump above maximum rated flow shown on the pump curve leading to an increase in horsepower and vibration along with an increase in NPSHr resulting in mechanical seal and/or shaft failure and/or loss of prime.
• Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Speed of pump must reach 2000 rpm for 2 pole motors and 1000 rpm for 4 pole motors within 10 seconds or an increase in vibration and rotor deflection and decrease in rotor stability leading to mechanical seal and/or shaft failure and/or pump seizure can occur.
• Foreign objects in the pumped liquid or piping system can block the flow and cause excess heat generation, sparks and premature failure. Make sure that the pump and systems are free of foreign objects before and during operation.
• A build-up of gases within the pump, sealing system, or process piping system may result in an explosive environment. Make sure the process piping system, pump and sealing system are properly vented prior to operation.
• 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.
• 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.
• Operating the pump in reverse rotation can result in the contact of metal parts, heat generation, and breach of containment.
• Avoid death or serious injury. Explosion and/or seizure of pump can cause fire and/or burns. Assure balance line is installed and either piped to the pump suction or back to the suction vessel to avoid vaporization of pumped fluid.
DANGER:
Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Assure all openings are sealed off prior to filling pump.
Precautions
NOTICE:
• Verify the driver settings before you start any pump.
• Make sure that the temperature change does not exceed 35°F (19°C) per minute.
• The maximum allowable temperature change for an abnormal transient event such as thermal shock is 400°F (205°C).
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 35 Manual
Page 38
Commissioning, Startup, Operation, and Shutdown
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. Accomplish this by flowing fluid from pump inlet to discharge drain (optionally, the casing vent can be included in warm-up circuit but not required). Soak for (2) hours at process fluid temperature.
At initial startup, do not adjust the variable-speed drivers or check for speed governor or over­speed 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.

Remove the coupling guard

1. Remove the nut, bolt, and washers from the slotted hole in the center of the coupling guard.
2. Slide the driver half of the coupling guard toward the pump.
3. Remove the nut, bolt, and washers from the driver half of the coupling guard.
4. Remove the driver-side end plate.
5. Remove the driver half of the coupling guard: a) Slightly spread the bottom apart.
b) Lift upwards.
6. Remove the remaining nut, bolt, and washers from the pump half of the coupling guard. It is not necessary to remove the end plate from the pump side of the bearing housing. You can access the bearing-housing tap bolts without removing this end plate if maintenance of internal pump parts is necessary.
7. Remove the pump half of the coupling guard: a) Slightly spread the bottom apart.
b) Lift upwards.
1. Annular groove
2. Pump-side end plate
3. Driver
4. Pump half of the coupling guard
36 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Page 39

Check the rotation - Frame Mounted

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.
5. Make sure that everyone is clear, and then jog the driver long enough to determine that the direction of rotation corresponds to the arrow on the bearing housing or close-coupled frame.
6. Lock out power to the driver.

Couple the pump and driver

Commissioning, Startup, Operation, and Shutdown
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.
Couplings must have proper certification to be used in an ATEX classified environment. Use the instructions from the coupling manufacturer in order to lubricate and install the coupling. Refer to driver/coupling/gear manufacturers IOM for specific instructions and recommenda­tions.

Coupling guard assembly

Precautions
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.
• Never operate the pump without the coupling guard correctly installed.
• Avoid death or serious injury. Assure mechanical seal guard is properly installed using supplied fastening hardware.
• 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.
•
Required parts
These parts are required:
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Commissioning, Startup, Operation, and Shutdown
1. End plate, drive end
2. End plate, pump end
3. Guard half, 2 required
4. 3/8-16 nut, 3 required
5. 3/8 in. washer
6. 3/8-16 x 2 in. hex head bolt, 3 required
Install the coupling guard
1. Is the end plate (pump end) already installed?
• If yes: Make any necessary coupling adjustments and then proceed to step 2.
• If no: Complete these steps:
a) Remove the spacer portion of the coupling.
Refer to the instructions from the coupling manufacturer for assistance.
b) If the coupling hub diameter is larger than the diameter of the opening in the end plate,
then remove the coupling hub.
c) Remove the three thrust bearing end cover and bearing frame screws.
234B End plate 370N Bearing frame bolts
d) Align the end plate to the thrust bearing end cover so that the two slots in the end plate
align with the bolts remaining in the end cover, and the three holes in the end plate align with the holes in the end cover.
e) Replace the three thrust bearing end cover and bearing frame bolts and torque to the
values shown in the Maximum torque values for 3700 fasteners table.
f) Replace the coupling hub (if removed) and the spacer portion of the coupling.
Refer to the instructions from the coupling manufacturer for assistance.
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Complete any coupling adjustments before you proceed with the coupling guard assembly.
2. Slightly spread the opening of the coupling guard half and place it over the pump end plate. The annular groove in the guard is located around the end plate. Position the opening (flange) so that it does not interfere with the piping but still allows for access when you install the bolts.
1. Annular groove
2. Deflector fan guard
3. Coupling guard half
3. Place one washer over the bolt and insert the bolt through the round hole at the front end of the guard half.
4. Place a second washer over the exposed end of the bolt.
5. Thread a nut onto the exposed end of the bolt and tighten firmly. This figure shows the proper sequence of components:
1. Nut
2. Washer
3. Bolt
1. Nut
2. Washer
3. Bolt
This figure shows an assembled unit:
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance 39 Manual
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Commissioning, Startup, Operation, and Shutdown
1. Driver
2. Coupling guard half
6. Slightly spread the opening of the remaining coupling guard half and place it over the installed coupling guard half so that the annular groove in the remaining coupling guard half faces the driver.
1. Annular groove
2. Coupling guard half
3. Driver
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Commissioning, Startup, Operation, and Shutdown
7. Place the end plate over the driver shaft and locate the end plate in the annular groove at the rear of the coupling guard half.
1. Annular groove
2. End plate
8. Repeat steps 3 through 5 for the rear end of the coupling guard half, except that you hand tighten the nut.
9. Slide the rear coupling guard half towards the motor so that it completely covers the shafts and coupling.
1. Driver
2. Slide to fit
10. Repeat steps 3 through 5 for the center slots in the coupling guard.
11. Firmly tighten all nuts on the guard assembly.
Install the coupling guard with the optional air cooling package
1. Is the deflector-fan guard support installed?
• If yes: Make any necessary coupling adjustments and then proceed to step 2.
• If no: Complete the following steps:
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Commissioning, Startup, Operation, and Shutdown
a) Remove the spacer portion of the coupling.
Refer to the coupling manufacturer's instructions.
b) If the coupling hub diameter is larger than the diameter of the opening in the deflector-
fan guard support, then remove the coupling hub.
c) Loosen the thrust deflector-fan set screw.
122 Shaft 123B Radial deflector fan 123E Thrust deflector fan 222 Deflector set screw 228 Bearing frame 234 Thrust deflector-fan guard 234D Thrust deflector-fan guard support 496Q Support screws
d) Slide the thrust deflector fan off of the shaft. e) Remove the thrust bearing end cover and the bearing frame screws. f) Align the thrust deflector-fan guard support with the thrust bearing end cover so that the
support slots align with the holes in the end cover.
g) Replace the thrust bearing end cover and bearing frame screws and torque to values
shown in the Maximum torque values for 3700 fasteners table.
CAUTION:
Do not over-tighten the thrust bearing end cover and bearing frame screws.
h) Install the thrust deflector fan over the shaft. i) Position the thrust deflector fan approximately 0.03 in. (0.8 mm) from the thrust bearing
end cover and firmly tighten the deflector set screw.
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j) Slide the thrust deflector-fan guard over the guard support and align the holes in the
guard with the tapped holes in the guard support.
2. Install the thrust deflector-fan guard and support screws and tighten to the torque values shown in the Maximum torque values for 3700 fasteners table.
3. Replace the coupling hub (if removed) and spacer portion of the coupling. Refer to the coupling manufacturer's instructions for assistance. Complete any coupling adjustments before you proceed with the coupling guard assembly.
4. Slightly spread the opening of the coupling-guard half and place it over the thrust deflector­fan guard so that the annular groove in the guard half is located around the guard support extension.
1. Rear coupling guard half
2. Annular groove
3. Deflector fan guard
4. Driver
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Locate the opening (flange) so that it does not interfere with the piping but does allow access for installing the bolts.
1. Annular groove
2. Deflector fan guard
3. Coupling guard half
5. Place one washer over the bolt and insert the bolt through the round hole at the front end of the guard half.
6. Place a second washer over the exposed end of the bolt and tighten it firmly.
7. Thread a nut onto the exposed end of the bolt and tighten it firmly. This figure shows the proper sequence of components:
1. Nut
2. Washer
3. Bolt
This figure shows an assembled unit:
1. Driver
2. Coupling guard half
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8. Slightly spread the opening of the remaining coupling guard half and place it over the installed coupling guard half so that the annular groove in the remaining coupling guard half faces the driver.
1. Annular groove
2. Coupling guard half
3. Driver
9. Place the end plate over the driver shaft and locate the end plate in the annular groove at the rear of the coupling guard half.
1. Annular groove
2. End plate
10. Repeat steps 5 through 7 for the rear end of the coupling guard half, except that you hand tighten the nut.
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Commissioning, Startup, Operation, and Shutdown
11. Slide the rear coupling guard half towards the motor so that it completely covers the shaft and coupling.
1. Driver
2. Slide to fit
12. Repeat steps 5 through 7 for the center slots in the coupling guards.
13. Firmly tighten all of the nuts on the guard assembly.

Bearing lubrication

Precautions
WARNING:
Make sure to properly lubricate the bearings. Failure to do so can result in excess heat generation, sparks, and premature failure.
NOTICE:
Avoid equipment damage. Refer to driver/coupling/gear manufactures IOM for instructions and recommendations for lubrication.
Pumps are shipped without oil
You must lubricate oil-lubricated bearings at the job site.
Ring oil lubrication
Ring oil-lubricated bearings are standard. Bearing housings are supplied with constant-level oilers and sight glasses. Make sure that oil rings are properly seated in the grooves in the shaft.
Pure or purge oil-mist lubrication
Pure or purge oil-mist are optional features for the 3700. Follow the oil-mist generator manufacturer's instructions. The inlet and outlet connections are located on the top and bottom of the bearing frame, respectively.
Oil volumes
Oil volume requirements for ball/ball and sleeve/ball bearings
This table shows the required amount of oil for oil-lubricated bearings.
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All frames in this table use a Watchdog Oiler, which has a capacity of 4 oz. (118 ml).
Frame Frame oil volume
SA 20 600 SX 38 1115 MA 32 950 MX, LA 47 1385 LX, XLA 72 2120 XLX, XXL 89 2625
Lubricating-oil requirements
Oil quality requirements
Use a high-quality turbine oil with rust and oxidation inhibitors with rated viscosity shown below at 100°F (38°C).
Oil requirements based on temperature
For the majority of operating conditions, bearing temperatures run between 120°F (49°C) and 180°F (82°C), and you can use an oil of ISO viscosity grade 68 at 100°F (38°C). If temperatures exceed 180°F (82°C), refer to the table for temperature requirements.
Temperature Oil requirement
Bearing temperatures exceed 180°F (82°C) Use ISO viscosity grade 100. Bearing temperatures
Pumped-fluid temperatures are extreme Refer to the factory or a lubrication expert.
Commissioning, Startup, Operation, and Shutdown
ounces milliliters
are generally about 20°F (11°C) higher than bear­ing-housing outer surface temperatures.
Acceptable oil for lubricating bearings
Acceptable lubricants
Brand Lubricant type
Exxon Teresstic EP 68 Mobil DTE Heavy Medium Sunoco Sunvis 968 Royal Purple SYNFILM ISO VG 68 Synthetic Lube
Lubricate the bearings with oil
NOTICE:
Do not expose an idle pump to freezing conditions. Drain all liquid that is inside the pump and the cooling coils. Failure to do so can cause liquid to freeze and damage the pump.
Ring oil-lubricated pumps are supplied with an oiler that maintains a constant oil level in the bearing housing.
1. Fill the oil reservoir in the bearing frame: a) Fill the bearing chamber through the main body of the Watchdog until it reaches the
optimum fluid level visible in the bullseye sight. b) Fill the watchdog reservoir using a funnel. c) Verify o-ring is on the Watchdog oiler spout. d) Place your thumb over the reservoir spout. Invert and insert the spout into the internal
threaded boss on the main body. e) Tighten reservoir. Do not over-tighten. f) Verify that proper oil level is maintained per the following diagram.
NOTICE:
Do not fill the oil reservoir of the bearing frame through the plug at the top.
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Commissioning, Startup, Operation, and Shutdown
2. Check that the oil level is correct. The correct oil level is centered in the bullseye sight glass, when the pump is not in operation. During operation, bullseye sight gives a false oil level reading. Shown is general schematic. Oil level is below outer race of bearing.
1. Plug
2. Reservoir
3. Main body
Lubricate the bearings with pure or purge-oil mist (optional)
NOTICE:
Do not expose an idle pump to freezing conditions. Drain all liquid that is inside the pump and the cooling coils. Failure to do so can cause liquid to freeze and damage the pump.
Before lubricating with purge-oil mist, make sure that the bearing frame is properly lubricated. See Lubricate the bearings with oil. The oil requirements for ring-oil-lubricated bearings also apply to oil-mist-lubricated bearings.
1. Prepare the oil-mist generator according to the manufacturer's instructions.
2. Connect the oil-mist supply lines to the inlet connections.
3. Connect the drain and vent lines to the outlet connections.
1. Oil mist inlet
2. Oil mist outlet
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.
3. Refer to "Reassembly" section for proper bearing greasing procedure.
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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.
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.
Commissioning, Startup, Operation, and Shutdown
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.

Connection of sealing liquid for mechanical seals

Seal lubrication is required
Seal faces must have liquid film between them for proper lubrication. Locate the taps using the illustrations shipped with the seal.
Seal flushing methods
You can use these methods in order to flush or cool the seal:
Method Description
Product flush Run the piping so that the pump pushes the pumped fluid from the casing and
External flush Run the piping so that the pump injects a clean, cool, compatible liquid directly into
Other You can use other methods that employ multiple gland or seal chamber
injects it into the seal gland. If necessary, an external heat exchanger cools the pumped fluid before it enters the seal gland.
the seal gland. The pressure of the flushing liquid must be 5 to 15 psi (0.35 to 1.01 kg/cm2) greater than the seal chamber pressure. The injection rate must be 0.5 to 2 gpm (2 to 8 lpm).
connections. Refer to the mechanical seal reference drawing and piping diagrams.

Pump priming

Prime the pump with the suction supply above the pump

1. Slowly open the suction isolation valve.
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Commissioning, Startup, Operation, and Shutdown
2. Open the air vents on the suction and discharge piping until the pumped fluid flows out.
3. Close the air vents.
1. Discharge isolation valve
2. Check valve
3. Suction isolation valve

Prime the pump with the suction supply below the pump

Use a foot valve and an outside source of liquid in order to prime the pump. The liquid can come from one of these sources:
• A priming pump
• A pressurized discharge line
• Another outside supply
1. Close the discharge isolation valve.
2. Open the air vent valves in the casing.
3. Open the valve in the outside supply line until only liquid escapes from the vent valves.
4. Close the vent valves.
5. Close the outside supply line. This illustration is an example of priming the pump with a foot valve and an outside supply:
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1. Discharge isolation valve
2. Shutoff valve
3. From outside supply
4. Foot valve
5. Check valve
Commissioning, Startup, Operation, and Shutdown
This illustration is an example of priming the pump with a foot valve using a bypass around the check valve:
1. By-pass line
2. Shutoff valve
3. Foot valve
4. Check valve
5. Discharge isolation valve
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Commissioning, Startup, Operation, and Shutdown

Other methods of priming the pump

You can also use these methods in order to prime the pump:
• Prime by ejector
• Prime by automatic priming pump

Start the pump

WARNING:Immediately observe the pressure gauges. If discharge pressure is not quickly attained, stop
the driver immediately, reprime, and attempt to restart the pump.
CAUTION:
• Immediately observe the pressure gauges. If discharge pressure is not quickly attained, stop the driver, reprime, and attempt to restart the pump.
• Observe the pump for vibration levels, bearing temperature, and excessive noise. If normal levels are exceeded, shut down the pump and resolve the issue.
• On pure or purge-oil mist-lubricated units, remove the viewing port plugs to verify that oil mist flowing properly. Replace the plugs.
• On frame mounted units, ensure that the oil level is correct prior to starting pump. Close coupled pumps do not have oil lubricated bearings.
• Ensure all flush and cooling systems are operating correctly prior to starting pump.
Before you start the pump, you must perform these tasks:
• Open the suction valve.
• Open any recirculation or cooling lines.
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 pressure.
5. If the pump fails to reach the correct pressure, perform these steps: a) Stop the driver.
b) Prime the pump again. c) Restart the driver.
6. Monitor the pump while it is operating: 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.
7. Repeat steps 5 and 6 until the pump runs properly.
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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 operate pump past the maximum flow. For maximum flow refer to the pump performance curve.
• 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.
• Do not operate pump below hydraulic or thermal minimum flow. For hydraulic minimum flows refer to technical manual and pump performance curve. To calculate thermal minimum flow, refer to HI Centrifugal Pumps for Design and Application ANSI/HI 1.3-2000.
• 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.
NOTICE:
On ring oil-lubricated pumps, remove oil ring viewing port plugs to verify the following:
• The oil rings are properly positioned in the grooves on the shaft.
• The oil rings are turning.
• The oil rings are throwing oil.
Replace the plugs.
Commissioning, Startup, Operation, and Shutdown
NOTICE:
• On pure or purge-oil mist-lubricated units, remove the viewing port plugs to verify that oil mist is flowing properly. Replace the plugs.
• Make sure the oil level has remained steady by checking the oiler.
• Check the bearing temperatures using a pyrometer or other temperature-measuring device. Monitor the bearing temperature frequently during initial operation in order to determine if a bearing problem exists, as well as to establish normal bearing operating temperature.
• For pumps with auxiliary piping, make sure that proper flows have been established and that the equipment is operating properly.
• Establish baseline vibration readings in order to determine normal running conditions. If the unit is running roughly, then consult the factory.
• Monitor all gauges to ensure that the pump is running at or near rating and that the suction screen (when used) is not clogged.
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. If pump becomes plugged shut down and unplug prior to restarting pump.
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Commissioning, Startup, Operation, and Shutdown
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 and the cooling coils. 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.

Dowel the pump casing (optional)

You will need the following tools:
• Two number 7 taper pins
• One number 7 taper pin reamer
• 0.3320 in. or "Q" size drill
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Commissioning, Startup, Operation, and Shutdown
• Hardwood block or soft-faced hammer
Also make sure that the final alignment is complete. Dowel the pump casing to the baseplate pedestals in order to make sure that you maintain the
proper pump position.
1. Drill two holes, one in each casing mounting pad, at the locations provided. Drill the holes through both the casing mounting pads and the baseplate pedestal, when possible. This makes it easier to clean the metal chips produced from the drilling and reaming operations.
NOTICE:
If water-cooled pedestals have been provided, then do not drill through the baseplate pedestal. Doing so can result in leakage of cooling water.
2. Clean all burrs and metal chips from the holes.
3. Ream the holes with a number 7 taper pin reamer to the proper fit with the taper dowel pins. Insert the pins deep enough that only the threaded portion is exposed when the pin is fully seated.
4. Seat the taper pins firmly in the holes with a hardwood block or soft-faced hammer.
NOTICE:
Always remove the dowel pins before removing the casing. Failure to do so can result in casing damage.
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Maintenance

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 bearings.
• Inspect the seal.
Routine inspections
Perform these tasks whenever you check the pump during routine inspections:
• Check the level and condition of the oil through the sight glass on the bearing frame.
• 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.
Three-month inspections
Perform these tasks every three months:
• Check that the foundation and the hold-down bolts are tight.
• Check the mechanical seal if the pump has been left idle, and replace as required.
• Change the oil every three months (2000 operating hours) at minimum.
• Change the oil more often if there are adverse atmospheric or other conditions that might contaminate or break down the oil.
• 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.
• Inspect all plugs and seals in the power end.
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.
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2. Inspect it.
3. Replace worn parts.

Bearing maintenance

These bearing lubrication sections list different temperatures of the pumped fluid. If the pump is ATEX-certified and the temperature of the pumped fluid exceeds the permitted temperature values, then consult your ITT representative.
Bearing lubrication schedule
Type of bearing First lubrication Lubrication intervals
Oil-lubricated bearings Add oil before you install and start After the first 200 hours, change

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.
Maintenance
the pump. Change the oil after the oil every 2000 operating hours 200 hours for new bearings. or every three months.
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.
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.
Before you start the pump
Check the seal and all flush piping.
Mechanical seal life
The life of a mechanical seal depends on the cleanliness of the pumped fluid. Due to the diversity of operating conditions, it is not possible to give definite indications as to the life of a mechanical seal.
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Maintenance

Disassembly

Disassembly precautions

WARNING:
• This manual clearly identifies 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 unless explicitly stated in this manual.
• 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 steel-toed 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.
• A small amount of liquid will be present in certain areas like the seal chamber.
• A worn pump can have components that have very sharp edges. Wear protective gloves.
NOTICE:
• Avoid injury. Worn pump components can have sharp edges. Wear appropriate gloves while handling these parts.
• Make sure that all replacement parts are available before you disassemble the pump for overhaul.

Tools required

In order to disassemble the pump, you need these tools:
• Allen wrenches
• Brass drift punch
• Cleaning agents and solvents
• Dial indicators
• Drill
• Feeler gauges
• Induction heater
• Lifting sling
• Micrometer
• Open end wrenches
• Press
• Soft face hammer
• Spanner wrench
• Spanning type puller
• Tap
• Torque wrench with sockets
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Drain the pump

CAUTION:
1. Close the isolation valves on the suction and discharge sides of the pump.
2. Open the drain valve.
3. Leave the drain valve open and remove the drain plug located on the bottom of the pump
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 oiler bottle and store it in a safe place.
7. Remove the coupling guard.
8. Remove the coupling spacer.
9. Disconnect the coupling.
Maintenance
• Allow all system and pump components to cool before you handle them to prevent physical injury.
• If your pump is a Model NM3171, NM3196, 3198, 3298, V3298, SP3298, 4150, 4550, or 3107 there is a possible risk of static electric discharge from plastic parts that are not properly grounded. If the pumped fluid is non-conductive, drain and flush the pump with a conductive fluid under conditions that will not allow for a spark to be released to the atmosphere.
You must drain the system if no valves are installed.
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.
housing. Do not reinstall the plug or close the drain valve until the reassembly is complete.
Follow the coupling manufacturer's instructions for assistance.

Remove the back pull-out assembly

CAUTION:
Never remove the back pull-out assembly without assistance.
1. Remove the casing stud nuts.
WARNING:
• If you must use heat to remove parts, you must drain all liquid and remove all vapor. To do this, purge the casing, seal chamber, and so forth, with dry compressed air or inert gas.
2. Tighten the jackscrews evenly, using an alternating pattern, in order to remove the back pull-out assembly.
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Maintenance
You can use penetrating oil if the adapter to the casing joint is corroded.
184 Seal chamber cover 418 Jackscrew
3. Remove the back pull-out assembly using a lifting sling through the bearing frame.
4. Remove and discard the casing gasket. You will insert a new casing gasket during reassembly.
5. Remove the jackscrews.
6. Clean all gasket surfaces. Clean surfaces prevent the casing gasket from partially adhering to the casing due to binders and adhesives in the gasket material.
7. Secure the back pull-out assembly to prevent movement during transport.
8. Transport the back pull-out assembly to a clean work area for further disassembly.

Remove the coupling hub

1. If the coupling hub overhangs the shaft, mark the shaft for relocating the coupling hub during reassembly. Coupling hubs are normally mounted flush with the end of the shaft.
2. Remove the coupling hub using a spanning-type puller or puller holes provided in the hub. Refer to the coupling manufacturer's instructions for assistance.

Remove the impeller (3700/3710)

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.
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The impeller nut has left-hand threads.
122 Shaft 198A Set screw 304 Impeller nut
Maintenance
3. Pull the impeller from the shaft. Use a spanning-type puller if required.
4. Remove the impeller key. Save the key for reassembly unless it is damaged.

Remove the impeller (3703)

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.
122 Shaft 198A Set screw 304 Impeller nut 443A Impeller spacer
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Maintenance
3. Pull the impeller from the shaft. Use a spanning-type puller if required.
4. Remove the impeller key. Save the key for reassembly unless it is damaged.
5. Remove the impeller spacer. Save the spacer for reassembly unless it is damaged.

Remove the impeller (3700LF)

CAUTION:
Wear heavy work gloves when you handle impellers. The sharp edges can cause physical injury.
1. Loosen and remove the impeller capscrew. The impeller capscrew has left-hand threads.
2. Pull the impeller from the shaft. Use a spanning-type puller if required.
198 Impeller capscrew 443A Impeller spacer 122 Shaft
3. Remove the impeller key. Save the key for reassembly unless it is damaged.
4. Remove the impeller spacer. Save the spacer for reassembly unless it is damaged.

Remove the seal-chamber cover

1. Loosen and remove the gland stud nuts.
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Maintenance
2. Slide the cartridge mechanical seal away from the seal-chamber cover.
3. Install the eyebolt in the tapped hole provided in the seal-chamber cover.
4. Rig the lifting sling to the eyebolt and the overhead lifting device.
5. Loosen and remove the seal-chamber cover and the bearing frame bolts.
6. Separate the seal-chamber cover from the bearing frame by tapping on the cover flange with a hardwood block or a soft-face hammer.
122 Shaft 184 Seal-chamber cover 228 Bearing frame 355 Gland stud nuts 360Q Gland gasket 370H Bearing frame bolts
7. Guide the seal-chamber cover over the end of the shaft once the cover releases from the bearing frame.
NOTICE:
The cartridge mechanical seal may become damaged if the cover is allowed to come in contact with it.
8. Loosen the setscrews and remove the cartridge mechanical seal from the shaft.
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Maintenance
9. Remove and discard the mechanical seal O-ring or gland gasket. You will replace this with a new O-ring or gasket during reassembly.

Remove the optional water-jacket cover

CAUTION:
• The seal-chamber cover must be adequately supported so that it cannot fall.
• You must vent all air from the water jacket. If all of the air is not vented, it can cause the water jacket cover to be propelled from its fit in the seal-chamber cover.
• Do not exceed 7.0 kg/cm2(100 psig) pressure in the water jacket.
1. Suspend the seal-chamber cover from the lifting sling, or firmly support the seal-chamber cover in a vertical position such that one water-jacket connection is on the top and the other is on the bottom.
2. Slowly replace all the air with water until all air is vented and only water comes out of the top connection.
3. Seal the top connection with a plug or other suitable means.
4. Slowly increase water pressure on the inlet (bottom) connection to force the water-jacket cover from its fit in the seal-chamber cover. Be prepared to catch the water-jacket cover.
5. Remove and discard the outer and inner water-jacket cover O-rings from the grooves in the water-jacket cover. You will replace these with new O-rings during reassembly.

Disassemble the power end

This procedure explains how to disassemble a standard ring-oil or optional purge-oil mist­lubricated power end and includes information for the disassembly of these optional features:
• Pure oil-mist-lubricated power end
• Radial-heat-flinger end
• Air-cooling package
• Water-cooling package
CAUTION:
Do not remove bearings from the shaft unless you need to replace them.
The optional pure-oil mist-lubricated power ends are disassembled in the same manner as ring oil-lubricated power ends. Oil rings are not furnished with pure-oil-mist lubrication. Disregard any references to those parts.
1. Does your power end have an optional air-cooling package?
• If no: Go to step 2.
• If yes:
a) Loosen the radial-heat-flinger set screw. b) Loosen the thrust-fan set screw.
The thrust fan for the SA and MA pumps sits on the coupling diameter. c) Slide the thrust fan off the shaft. d) Loosen and remove the thrust-bearing end cover and bearing-frame screws.
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e) Remove the thrust-fan guard support.
Maintenance
122 Shaft 123B Radial deflector fan 123E Thrust deflector fan 222 Deflector set screw 228 Bearing frame 234 Thrust deflector-fan guard 234D Thrust deflector-fan guard support 496Q Support screws
2. Loosen and remove the thrust-bearing end cover and bearing-frame screws.
3. Pry the thrust-bearing end cover thrust deflector out of the bearing frame.
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Maintenance
SA and MA thrust-bearing end covers are sealed to the bearing frame with a gasket.
109A Thrust-bearing end cover 122 Shaft 123A Thrust deflector 228 Bearing frame 358E Oil ring inspection plug 360A Gasket 370N Bearing-frame screw 390C Thrust-bearing end-cover shim 469P Oil ring retainer
4. Remove and discard the thrust-bearing end-cover shims. For all except SA and MA bearing frames, replace with new shims during reassembly.
5. Remove the two oil ring retainers and the oil ring inspection plugs from the top of the bearing frame. SX, MX, LA, LX, XLA, and XLX pumps have two inspection plugs. SA and MA pumps have one inspection plug.
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Maintenance
6. If your power end has the optional water-cooling package, then remove the finned-tube cooling assembly from the bearing frame.
7. Carefully withdraw the shaft and bearing assembly from the bearing frame. Take care not to damage the oil rings. If the oil rings bind or hang up, you can access them through the inspection holes and reposition them using a hooked tool made from wire. SX, MX, LA, LX, XLA, and XLX pumps have two oil rings. SA and MA pumps have one oil ring.
112 Duplex thrust bearing 114 Oil rings 122 Shaft 136 Thrust-bearing locknut 168 Radial bearing 382 Lockwasher
8. Bend the locking tang of the thrust-bearing lockwasher away from the notch in the bearing locknut.
NOTICE:
Save the bearings for inspection. Do not reuse the bearings. Doing so may result in decreased performance.
9. Remove the radial bearing from the shaft: a) Loosen and remove the thrust-bearing locknut and lockwasher.
b) Press or pull the duplex thrust bearing from the shaft. c) Remove the oil ring(s) from the shaft.
SX, MX, LA, LX, XLA, and XLX pumps have two oil rings. SA and MA pumps have one oil ring.
d) Press or pull the radial bearing from the shaft.
10. Perform the following based on your pump version:
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Maintenance
If your pump is... Then...
SX, MX, LA, LX, XLA, or XLX
1. Loosen and remove the radial-bearing end cover and bearing­frame screws.
2. Remove and discard the radial-bearing end-cover gasket. You will replace this with a new gasket during reassembly.
3. Press the radial and thrust deflector out of the radial and thrust end covers.
If you have an optional radial heat flinger, it replaces the standard radial deflector and is removed in the same manner except you loosen three set screws.
119A 123 228 360 370P
SA and MA Remove the radial-bearing end cover and radial deflector with gasket
or radial deflector from the bearing frame by tapping it out of the frame. If you have an optional radial heat flinger, it replaces the standard
radial deflector and is removed in the same manner except you loosen three set screws.
Thrust end cover Deflector Bearing frame Radial-bearing end-cover gasket Bearing-frame screws
11. Remove any remaining plugs and fittings.
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Preassembly inspections

Replacement guidelines

Casing check and replacement
WARNING:
Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Inspect and assure gasket sealing surfaces are not damaged and repair or replace as necessary.
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
Casing areas to inspect
The arrows point to the areas to inspect for wear on the casing:
Maintenance
Figure 10: Areas to inspect for wear on casing
Impeller replacement
This table shows the criteria for replacing the impeller:
Impeller checks
100 Casing 164 Casing wear ring
Impeller parts When to replace
Impeller vanes
Pumpout vanes When worn or bent more than 1/32 in. (0.8 mm) Vane edges When you see cracks, pitting, or corrosion damage
• When grooved deeper than 1/16 in. (1.6 mm), or
• When worn evenly more than 1/32 in. (0.8 mm)
• Check and clean the impeller bore diameter.
• Check the impeller balance. Rebalance the impeller if it exceeds the ISO 1940 G1.0 criteria.
NOTICE:
You must have extremely accurate tooling equipment to balance impellers to the ISO 1940 G1.0 criteria. Do not attempt to balance impellers to this criteria unless this type of tooling and equipment is available.
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Maintenance
Impeller areas to inspect
101 Impeller 202 and 203 Impeller wear rings
Figure 11: Areas to inspect for wear on impeller
Oil ring replacement
Oil rings must be as round as possible in order to function properly. Replace oil rings if they are worn, distorted, or damaged beyond reasonable repair.
Cartridge mechanical seal replacement
Cartridge-type mechanical seals should be serviced by the seal manufacturer. Refer to the instructions from the mechanical seal manufacturer for assistance.
Coupling guard replacement
Repair or replace the coupling guard if you notice corrosion or other defects.
Gaskets, O-rings, and seats replacement
WARNING:
Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Replace any damaged or worn gaskets/o-rings.
• 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.
Additional parts
Inspect and either repair or replace all other parts, if inspection indicates continued use would be harmful to satisfactory and safe pump operation.
Inspection must include the following items:
• Bearing end covers (109A) and (119A)
• INPRO radial deflector (123) and thrust deflector (123A)
• Radial heat flinger (123B)*
• Thrust fan (123E)*
• Bearing locknut (136)
• Impeller key (178) and coupling key
• Impeller screw (198)
• Impeller washer (199)
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• Impeller lockwasher (199A)
• Impeller nut (304)
• Bearing lockwasher (382)
• Impeller spacer (443A)
• Water jacket cover (490)*
• All nuts, bolts, and screws
* If supplied.

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.
Maintenance
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.
Replacement bearings
Table 6: 3700 bearings based on SKF / MRC designations
Replacement bearings must be the same as, or equivalent to, those listed in this table.
Group Radial (inboard) Thrust (outboard)
SA 6210 C3 7310 BEGAM MA 6211 C3 7311 BEGAM
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Maintenance
Group Radial (inboard) Thrust (outboard)
SX 6212 C3 7312 BEGAM MX, LA 6213 C3 7312 BEGAM LX, XLA 6215 C3 7313 BEGAM XLX 6218 C3 7317 BEGAM XXL 6220 C3 7318 BEGAM

Wear rings inspection and replacement (Not applicable for 3703/3700LF)

Wear ring types
All units are equipped with casing, impeller, and seal-chamber cover wear rings. When clearances between the rings become excessive, hydraulic performance decreases substan­tially.
Wear ring diameter check
Measure all wear ring diameters and then calculate the diametrical wear ring clearances. See the Minimum running clearances table for more information.
100 Casing 164 Casing wear ring
Figure 12: Casing wear ring
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101 Impeller 202 Impeller wear ring 203 Impeller wear ring (No Requirement for 3700LF)
Figure 13: Impeller wear ring
125 Seal-chamber throat bushing 184 Seal-chamber cover 230 Seal-chamber cover wear ring
Figure 14: Seal chamber cover wear ring
When to replace wear rings
Replace wear rings when the diametrical clearance exceeds two times the minimum clearance as shown in this table or when the hydraulic performance has decreased to unacceptable levels.
Table 7: Minimum running clearances
Diameter of impeller wear ring Minimum diametrical clearance in. mm in. mm
<2.000 <50 0.010 0.25
2.000 to 2.4999 To to 64.99 0.011 0.28
2.500 to 2.999 65 to 79.99 0.012 0.30
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Maintenance
Diameter of impeller wear ring Minimum diametrical clearance
3.000 to 3.499 80 to 89.99 0.013 0.33
3.500 to 3.999 90 to 99.99 0.014 0.35
4.000 to 4.499 100 to 114.99 0.015 0.38
4.500 to 4.999 115 to 124.99 0.016 0.40
5.000 to 5.999 125 to 149.99 0.017 0.43
6.000 to 6.999 150 to 174.99 0.018 0.45
7.000 to 7.999 175 to 199.99 0.019 0.48
8.000 to 8.999 200 to 224.99 0.020 0.50
9.000 to 9.999 225 to 249.99 0.021 0.53
10.000 to 10.999 250 to 274.99 0.022 0.55
10.000 to 11.999 275 to 299.99 0.023 0.58
12.000 to 12.999 300 to 324.99 0.024 0.60
Replace the wear rings
WARNING:
Dry ice and other chilling substances can cause physical injury. Contact the supplier for information and advice for proper handling precautions and procedures.
CAUTION:
• Excessive machining can damage ring fits and render parts unusable.
• Wear insulated gloves when you handle rings. Rings will be hot and can cause physical injury.
• For runout checks, firmly support the bearing-frame assembly in the horizontal position.
• Wear heavy work gloves when you handle impellers. The sharp edges can cause physical injury.
NOTICE:
The impeller and wear-ring clearance setting procedures 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.
Casing, impeller, and seal chamber cover wear rings are held in place by a press fit and three set screws.
1. Remove the wear rings: a) Remove the set screws.
b) Remove the wear rings from the casing, impeller, and seal-chamber cover using a pry
or puller to force the rings from the fits.
2. Clean the wear-ring seats thoroughly, and make sure that they are smooth and free of scratches.
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3. Heat the new impeller wear rings to 180° to 200°F (82° to 93°C) using a uniform method for heating, such as an oven, and place them on the impeller wear-ring seats.
101 Impeller 202 Impeller wear ring 203 Impeller wear ring 320 Set screw
4. Chill the new casing wear ring using dry ice or another suitable chilling substance and install the ring into the casing fit. Be prepared to tap the ring in place with a wood block or soft-faced hammer.
100 Casing 164 Casing wear ring 222E Set screw
5. Insert a new seal-chamber-cover wear ring: a) Chill a new seal-chamber-cover wear ring, using dry ice or another suitable chilling
substance, and install the ring into the cover fit. Be prepared to tap the ring in place with a hardwood block or soft faced hammer.
b) Locate, drill, and tap three new equally-spaced set screw holes between the original
holes in each new ring and ring-seat area.
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Maintenance
c) Install the set screws and upset threads.
184 Cover 222E Set screw 230 Seal-chamber-cover wear ring
6. Check the casing wear ring runout and distortion: a) Measure the bore at each set screw location with inside micrometers or vernier
calipers.
b) Correct any distortion in excess of 0.003 in. (0.08 mm) by machining before you trim the
new impeller wear rings.
100 Casing 164 Casing wear ring
7. Measure the bore of the casing wear ring to establish the required impeller wear-ring diameter you use to provide the recommended running clearances.
8. Repeat steps 6 and 7 for the seal-chamber wear ring.
9. Turn the impeller wear rings to size after you mount them on the impeller:
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NOTICE:
• All replacement impeller wear rings, except those that are hard-faced, are supplied
0.020 in. to 0.030 in. (0.51 mm to 0.75 mm) oversize.
• Do not machine all wear rings. Spare hard-faced impeller wear rings are supplied to pre-established clearances when both impeller and casing wear rings are renewed.
10. Install the impeller: a) Install the impeller key on the shaft of the assembled bearing frame from which the
seal-chamber cover has been removed, and on which the runouts are within the established specifications. The key should be at the top (12 o’clock) position for the
impeller installation. b) Install the impeller on the shaft. c) Install the impeller washer. d) Secure the impeller firmly with an impeller screw or impeller nut.
The impeller screw has left-hand threads.
11. Check the impeller wear-ring runout: a) Mount the dial indicator.
b) Rotate the shaft so that the indicator rides along the casing-side impeller wear-ring
surface for 360°.
c) Repeat steps a and b for the wear ring on the seal-chamber cover side.
Maintenance
101 Impeller 122 Shaft 202 Casing-side impeller wear-ring 228 Seal-chamber cover side wear ring
If the impeller wear ring runout is in excess of 0.005 in. (0.13 mm):
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Maintenance
1. Check for distortion at the set screw areas.
2. Check the shaft runout and all mating surfaces of the shaft and impeller hub for
perpendicularity.
3. True up all damaged surfaces.
4. Recheck the impeller wear-ring runout.

Seal-chamber cover inspection and replacement

Two seal-chamber cover versions
The seal-chamber cover is available in two versions:
• Standard
• Optional
The optional version has a cooling chamber and water jacket cover and is used when elevated pumped-fluid temperatures are present.
Seal-chamber cover areas to inspect
• Ensure all gasket/O-ring sealing surfaces are clean and have no damage that would prevent sealing.
• Ensure that all cooling (where applicable), flush, and drain passages are clear.
125 Seal-chamber throat bushing 184 Seal-chamber cover 230 Seal-chamber cover wear ring (not present on
Seal-chamber cover replacement
Seal-chamber cover part When to replace
Seal-chamber cover surfaces When worn, damaged, or corroded more than 0.126
Inside diameter of seal-chamber cover bushing When the diametral clearance between the bushing
Replace the seal-chamber cover bushing
The seal-chamber cover bushing is held in place by a press fit and locked by three set screws.
1. Remove the bushing: a) Remove the set screws.
3703/3700LF)
in. (3.2 mm) deep
and the impeller hub exceeds 0.047 in. (1.20 mm)
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b) Press the bushing out of the fit towards the bearing-frame side of the seal-chamber
cover bore.
125 Bushing 184 Seal-chamber cover
2. Install the new seal-chamber cover bushing: a) Thoroughly clean the bushing fit in the seal-chamber cover.
b) Chill the new bushing using dry ice or another suitable chilling substance, and install
the bushing into the cover fit. Tap the bushing in place with a wood block or soft-faced hammer.
WARNING:
Dry ice and other chilling substances can cause physical injury. Contact the supplier for information and advice for proper handling precautions and procedures.
c) Locate, drill, and tap three new equally-spaced set screw holes on the impeller side of
the cover between the original set screw holes.
d) Install the set screws and upset threads.
1. Seal-chamber cover
2. Set screws
3. Bushing
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Maintenance

Bearing-frame inspection

Checklist
Check the bearing frame for these conditions:
• Visually inspect the bearing frame and frame foot for cracks.
• Check the inside surfaces of the frame for rust, scale, or debris. Remove all loose and foreign material.
• Make sure that all lubrication passages are clear.
• Inspect the inboard-bearing bores. If any bores are outside the measurements in the Bearing fits and tolerances table, replace the bearing frame.
Surface inspection locations
This figure shows the areas to inspect for wear on the bearing frame surface.
Figure 15: Surface inspection locations

Bearing fits and tolerances

Table 8: Bearing fits and tolerances table (SI units)
This table references the bearing fits and tolerances according to ISO 286 (ANSI/ABMA Standard 7) in inches (millimeters).
Location Description SA SX MA MX, LA LX, XLA XLX XXL
Radial Shaft OD 1.9690 2.3628 2.1659 2.5597 2.9534 3.5440 3.9377 (Inboard)
Interference 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001
Bearing ID 1.9680 2.3616 2.1647 2.5585 2.9522 3.5425 3.9362
Frame ID 3.5433 4.3307 3.9370 4.7244 5.1181 6.2992 7.0866
Clearance 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Bearing OD 3.5483 4.3307 3.9390 4.7244 5.1181 6.2992 7.0866
(50.013) (60.015) (55.015) (65.015) (75.015) (90.018) (100.018)
1.9686 2.3623 2.1654 2.5592 2.9529 3.5434 3.9371 (50.002) (60.002) (55.002) (65.002) (75.002) (90.003) (100.002)
(0.002) (0.002) (0.002) (0.002) (0.002) (0.003) (0.002)
0.0010 0.0012 0.0012 0.0012 0.0012 0.0015 0.001 (0.038) (0.025) (0.030) (0.030) (0.030) (0.030) (0.038)
(49.988) (59.985) (54.985) (64.985) (74.985) (89.980) (99.980)
1.9685 2.3622 2.1653 2.5591 2.9528 3.5433 3.9370 (50.000) (60.0000 (55.000) (65.000) (75.000) (90.000) (100.000)
(90.000) (110.000) (100.000) (120.000) (130.000) (160.000) (180.000)
3.5442 4.3316 3.9378 4.7253 5.1191 6.3002 7.0875 (90.022) (110.022) (100.022) (120.022) (130.025) (160.025) (180.023)
(0.000) (0.000) (0.000) (0.000) (0.000) (0.000) (0.000)
0.0015 0.0015 0.0015 1.0015 0.0017 0.0020 0.0012 (0.037) (0.037) (0.037) (0.037) (0.043) (0.050) (0.048)
(90.000) (110.000) (100.000) (120.000) (130.000) (160.000) (180.000)
3.5427 4.3301 3.9363 4.7238 5.1174 6.2982 7.0856 (89.985) (110.022) (99.985) (119.985) (129.982) (159.975) (179.975)
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Maintenance
Location Description SA SX MA MX, LA LX, XLA XLX XXL
Thrust Shaft OD 1.9691 2.3628 2.1659 2.3628 2.5597 3.3472 3.544 (Outboard)
Interference 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001
Bearing ID 1.9680 2.3616 2.1647 2.3616 2.5585 3.3457 3.5425
Frame ID 4.3307 5.1181 4.7244 5.1181 5.5118 7.0866 7.4802
Clearance 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
Bearing OD 4.3307 5.1181 4.7244 5.1181 5.5118 7.0866 7.4802
(50.013) (60.015) (55.015) (60.015) (65.015) (85.018) (90.018)
1.9686 2.3623 2.1654 2.3623 2.5592 3.3466 3.5434 (50.002) (60.002) (55.002) (60.002) (65.002) (85.003) (90.002)
(0.002) (0.002) (0.002) (0.002) (0.002) (0.003) (0.002)
0.0010 0.0012 0.0012 0.0012 0.0012 0.0015 0.002 (0.038) (0.025) (0.030) (0.025) (0.030) (0.030) (0.038)
(49.998) (59.985) (54.985) (59.985) (64.985) (84.980) (89.980)
1.9685 2.3622 2.1653 2.3622 2.5591 3.3465 3.5433 (50.000) (60.000) (55.000) (60.000) (65.000) (85.000) (90.000)
(110.0000 (130.000) (120.000) (130.000) (140.000) (180.000) (190.000)
4.3315 5.1191 4.7253 5.1191 5.5128 7.0876 7.4814 (110.022) (130.025) (120.022) (130.025) (140.025) (180.025) (190.028)
(0.000) (0.000) (0.000) (0.000) (0.000) (0.000) (0.000)
0.0015 0.0017 0.0015 0.0017 0.0017 0.0020 0.0002 (0.037) (0.043) (0.037) (0.043) (0.043) (0.050) (0.0053)
(110.000) (130.000) (120.000) (130.000) (140.000) (180.000) (190.000)
4.3301 5.1174 4.7238 5.1174 5.5111 7.0856 7.4793 (109.985) (129.982) (119.985) (129.9820 (139.982) (179.975) (189.975)

Reassembly

Assemble the power end

This procedure explains how to assemble a standard ring-oil or optional purge-oil mist­lubricated power end and includes information for the assembly of these optional features:
• Pure-oil mist-lubricated power end
• Radial-heat-flinger
• Air-cooling package
• Water-cooling package
WARNING:
Crush hazard. The unit and the components can be heavy. Use proper lifting methods and wear steel­toed shoes at all times.
CAUTION:
• Wear insulated gloves when you use a bearing heater. Bearings get hot and can cause physical injury.
• This pump uses duplex bearings mounted back-to-back. Make sure orientation of the bearings is correct.
NOTICE:
• There are several methods you can use to install bearings. The recommended method is to use an induction heater that heats and demagnetizes the bearings.
• Make sure that all parts and threads are clean and that you have followed all directions under the Preassembly inspections section.
• Check for magnetism on the pump shaft and degauss the shaft if there is any detectable magnetism. Magnetism attracts ferritic objects to the impeller, seal, and bearings which can result in excessive heat generation, sparks, and premature failure.
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Maintenance
Pure oil-mist lubricated power ends are assembled in the same manner as ring oil-lubricated power ends. Oil rings are not furnished with pure oil-mist lubrication. Disregard any reference to those parts.
1. Install the radial (inboard) bearing on the shaft.
112 Duplex thrust bearing 114 Oil rings 122 Shaft 136 Thrust-bearing locknut 168 Radial bearing 382 Lockwasher
2. Install the oil rings and bearings: a) Install the oil rings on the shaft.
Pump type Oil rings
SX, MX, LA, LX, XLA, and XLX 2 SA and MA 1
b) Install the thrust (outboard) bearings on the shaft. c) Place the bearing lockwasher on the shaft and the tang of the lockwasher in the
keyway.
d) Thread the bearing locknut onto the shaft.
After the bearings and the shaft have cooled to the ambient temperature, tighten the locknut to the torque values shown in the Maximum torque values for 3700 fasteners table.
e) Bend a tang of the bearing lockwasher into a slot of the locknut.
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f) Coat the internal bearing surfaces with lubricant to be used in service.
119A Thrust end cover 123 Deflector 228 Bearing frame 360 Radial-bearing end-cover gasket 370P Bearing-frame screws
Maintenance
3. Press the radial INPRO oil seal into the radial end cover.
4. Install the radial-bearing end cover and new end-cover gasket on the bearing frame. Make sure that the expulsion part is at the 6 o'clock position and is properly seated.
For the optional air-cooling package, the radial-heat flinger replaces the standard radial INPRO.
5. Perform the following based on your pump version:
If your pump is... Then...
SA or MA Press the radial INPRO oil seal into the bearing frame and make sure
SX, MX, LA, LX, XLA, XLX, Install and tighten the radial-end cover bolt and bearing-frame screws or XXL evenly to the torque values shown in the Maximum torque values for
that the expulsion part is at the 6 o'clock position and is properly seated.
3700 fasteners table.
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Maintenance
123 Radial INPRO oil seal 228 Bearing frame
6. Assemble the shaft assembly and bearing frame: a) Coat the outer races of the bearings with a compatible oil.
b) Coat the internal bearing surfaces of the bearing frame with a compatible oil. c) Position the oil rings in the grooves of the shaft.
109A Thrust-bearing end cover 122 Shaft 123A Thrust deflector 228 Bearing frame 358E Oil ring inspection plug 360A Gasket 370N Bearing-frame screw 390C Thrust-bearing end-cover shim 469P Oil ring retainer
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d) Carefully guide the shaft and bearing assembly into the bearing frame until the thrust
e) Observe the oil rings through the sight glass in the bearing frame.
f) Check that the shaft turns freely.
7. Replace the oil-ring inspection connection plugs.
8. Replace the two oil-ring retainers. The screw should bottom against the bearing frame.

Assemble the frame

CAUTION:
• Failure to align the gasket with oil grooves will result in bearing failure from a lack of lubrication.
• Do not over-tighten the thrust-bearing end-cover and bearing-frame screws.
• Do not allow the dial indicator to contact the keyway when turning the shaft. Readings will be incorrect and damage to dial indicator could result.
• For runout checks, firmly support the bearing-frame assembly in the horizontal position.
Maintenance
bearing is seated against the shoulder of the frame. Make sure that the oil rings do not bind or become damaged. Do not force the assembly together.
If the oil rings are not properly seated in the grooves in the shaft, insert a hook-shaped tool made from wire through the inspection connections. Reposition the oil rings as necessary to seat them in the grooves.
If you notice rubbing or binding, determine the cause and correct it.
1. Perform the following based on your pump:
If your pump is... Then...
SX, MX, LA, LX, XLA, XLX, or XXL
SA or MA
1. Install three thrust-bearing end-cover shims on the thrust-bearing end cover.
2. Align the holes.
1. Install three thrust-bearing end-cover gaskets on the bearing-end cover.
2. Align the gaskets to the end cover so that the openings in the gaskets align with the oil grooves on the end cover.
109A Thrust-bearing end cover 228 Bearing frame 360A Thrust-bearing end-cover gaskets
2. Install the thrust-bearing end cover over the shaft and onto the bearing frame.
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Maintenance
3. Install and tighten the thrust-bearing end cover and bearing-frame screws evenly to the torque values in the Maximum torque values for 3700 fasteners table.
4. Determine the axial end play as follows: a) Mount the dial indicator.
b) Use a lever to apply axial force to the impeller end of the shaft and firmly seat the thrust
bearing against the shoulder in the bearing frame.
c) Apply axial force in the opposite direction and firmly seat the thrust bearing against the
thrust-bearing end cover.
d) Repeat steps b and c several times and record the total travel (end play) of the rotating
element. Total travel (end play) must fall in the range of 0.001 to 0.005 in. (0.025 to 0.125 mm). Achieve the correct axial end play by adding or removing end-cover gaskets (for SA and MA pumps) or end-cover shims (for SX, MX, LA, LX, XLA, XLX, and XXL pumps) between the thrust-bearing end cover and the bearing frame. Add gaskets and shims if no axial end play is present.
5. Repeat steps 1 through 4. If the measured total travel falls outside the accepted range in step 4, remove or add the appropriate quantity of individual shims or gaskets to obtain the proper total travel.
6. Perform the following based on your pump:
If your pump is... Then...
SX, MX, LA, LX, XLA, XLX, or XXL
SA or MA
1. Remove the thrust-bearing end cover.
2. Press the INPRO seal into the thrust-bearing end cover and ensure that the expulsion part is at the 6 o'clock position and is properly seated.
3. Install the O-ring into the groove of the thrust-bearing end cover.
4. Lubricate the O-ring with a suitable lubricant.
1. Remove the thrust-bearing end cover.
2. Press the INPRO seal into the thrust-bearing end cover and ensure that the expulsion part is at the 6 o'clock position and is properly seated.
7. Install the thrust-bearing end cover with O-ring over the shaft and into the bearing-frame bore. Ensure that the O-ring is not damaged while it enters the bearing-frame bore.
8. Perform the following based on whether or not your power end has the optional air-cooling package:
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If your power end... Then...
Has the optional air-cooling package
Does not have the optional air-cooling package
1. Position the thrust-fan guard support on the thrust-bearing end cover.
2. Install and tighten the thrust-bearing end cover and bearing-frame screws evenly to torque values shown in the Maximum torque values for 3700 fasteners table.
3. Install the thrust fan over the shaft.
4. Position the thrust-deflector fan approximately 0.030 in. (0.8 mm) from the thrust INPRO seal on SA and MA pumps. Place the fan against the coupling-diameter shoulder and tighten the deflector­fan set screw firmly.
5. Tighten the heat-flinger set screws firmly.
1. Install and tighten the thrust-bearing end cover and bearing-frame screws evenly to the torque values in the Maximum torque values for 3700 fasteners table.
2. Verify that the shaft turns freely. If you detect rubbing or excessive drag, then determine the cause and correct it.
Maintenance
122 Shaft 123B Radial deflector fan 123E Thrust deflector fan 222 Deflector set screw 228 Bearing frame 234 Thrust deflector-fan guard 234D Thrust deflector-fan guard support 496Q Support screws
9. Check the following runouts:
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Maintenance
Check Procedure
Shaft impeller fit
1. Mount the dial indicator on the bearing frame.
2. Rotate the shaft through a maximum arc from one side of the keyway to the other. If the total indicator reading is greater than
0.002 in. (0.050 mm), determine the cause and correct it.
Shaft seal fit
1. Mount the dial indicator.
2. Rotate the shaft so that the indicator rides along the shaft surface for 360°. If the total indicator reading is greater than 0.002 in. (0.050 mm), then determine the cause and correct it.
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Check Procedure
Bearing-frame face
1. Mount the dial indicator on the shaft.
2. Rotate the shaft so that the indicator rides along the bearing-frame face for 360°. If the total indicator reading is greater than 0.004 in. (0.10 mm), then disassemble and determine the cause and correct it.
Maintenance
Bearing-frame lock
1. Mount the dial indicator on the shaft.
2. Rotate the shaft so that the indicator rides along the bearing-frame lock for 360°. If the total indicator reading is greater than 0.004 in. (0.10 mm), then disassemble and determine the cause and correct it.
10. Install and tighten any plugs and fittings removed during disassembly, including the oil­drain plug, and the sight glass.
11. If your power end has the optional water cooling package, install the finned-tube cooling assembly into the bearing frame.
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Maintenance

Install the optional water-jacket cover

1. Install the outer and inner water-jacket-cover O-rings into the grooves in the water jacket cover.
184 Seal-chamber cover 412S Outer water-jacket-cover O-ring 490 Water jacket cover 497T Outer and inner water-jacket-cover O-ring
2. Lubricate the sealing surfaces in the seal-chamber cover and O-rings with a suitable lubricant.
3. Insert the water jacket cover with O-rings into the fit in the seal-chamber cover. Make sure that the water jacket cover enters uniformly and that the O-rings are not damaged.
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Install the seal-chamber cover

1. Install the eyebolt in the tapped hole provided in the seal-chamber cover.
122 Shaft 184 Seal-chamber cover 228 Bearing frame 230 Seal-chamber cover wear-ring 370H Bearing-frame bolts
Maintenance
2. Set up a sling from the eyebolt to the overhead lifting device.
3. Lift the seal-chamber cover and position it so that it aligns with the shaft.
4. Install the seal-chamber cover on the bearing-frame assembly: a) Guide the cover carefully over the shaft and into the bearing-frame lock.
b) Install the seal-chamber cover and bearing-frame bolts. c) Tighten the bolts evenly using an alternating pattern.
Torque the bolts to values shown in the Maximum torque values for 3700 fasteners table.
5. Check the seal-chamber cover face runout: a) Mount the dial indicator on the shaft.
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Maintenance
b) Rotate the shaft so that the indicator rides along the seal-chamber cover face for 360°.
If the total indicator reading is greater than 0.005 in. (0.13 mm), determine the cause and correct it.
6. Check the seal-chamber cover lock runout: a) Mount the dial indicator on the shaft.
b) Rotate the shaft so that the indicator rides along the seal-chamber cover lock for 360°.
If the total indicator reading is greater than 0.005 in. (0.13 mm), determine the cause and correct it.
NOTICE:
The impeller and wear-ring clearance setting procedures 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.
7. Check the seal-chamber cover wear-ring runout: a) Mount the dial indicator on the shaft.
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Maintenance
b) Rotate the shaft so that the indicator rides on the seal-chamber cover wear-ring surface
for 360°. If the total indicator reading exceeds 0.006 in. (0.15 mm), determine the cause and correct it.
8. Check the seal-chamber face runout: a) Mount a dial indicator on the shaft.
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Maintenance
b) Rotate the shaft so that the indicator rides along the seal-chamber face for 360°.
If the total indicator reading is greater than the values shown in this table, determine the cause and correct it.
Table 9: Maximum Allowable Seal Chamber Face Runout
Group Maximum Allowable Total Indicator Reading
SA 0.0018 in. (0.045 mm) SX, MA 0.002 in. (0.05 mm) MX, LA 0.0024 in. (0.06 mm) LX, XLA 0.0026 in. (0.065 mm) XLX 0.0028 in. (0.07 mm) XXL 0.0031 in. (0.08 mm)
9. Check the seal-chamber lock (register) runout: a) Mount a dial indicator on the shaft or shaft sleeve.
b) Rotate the shaft so that the indicator rides along the seal-chamber lock (register) for
360°. If the total indicator reading is greater than 0.005 in. (0.125 mm ), determine the cause and correct it.
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Install the cartridge-type mechanical seal and seal-chamber cover

NOTICE:
Refer to the mechanical seal manufacturer’s drawings and instructions for assistance during the installation of the mechanical seal.
1. Remove the impeller. a) Loosen and remove the impeller nut.
The impeller nut has left-hand threads.
b) Remove the impeller, impeller key, and seal-chamber cover as described in the
Disassembly section.
2. Lubricate all O-rings with suitable lubricant, unless the seal manufacturer’s instructions indicate otherwise.
3. Slide the cartridge seal assembly (rotary, stationary gland, gland gasket, and sleeve) onto the shaft.
NOTICE:
Ensure that the mechanical-seal gland-piping connections are properly oriented.
Maintenance
122 Shaft 184 Seal-chamber cover 228 Bearing frame 355 Gland stud nut 370H Bearing-frame bolts
4. Install the seal-chamber cover. a) Set up a sling to the eyebolt and to the overhead lifting device.
b) Lift the seal-chamber cover and position it so that it aligns with the shaft. c) Install the seal-chamber cover on the power end by guiding the cover carefully over the
cartridge-seal rotary. Ensure that the gland studs smoothly enter the holes in the cartridge-seal gland and that the cover fits into the bearing frame lock.
d) Install the seal-chamber cover and bearing-frame bolts and tighten them using an
alternating pattern. Torque the bolts to the values shown in the Maximum torque values for 3700 fasteners table.
e) Install the gland stud nuts and tighten evenly to the torque values shown in the
Maximum torque values for 3700 fasteners table.
5. Tighten the setscrews in the locking collar.
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Maintenance
6. Disengage the spacer ring or clips.
7. Verify that the shaft turns freely. If you detect rubbing or excessive drag, then determine the cause and correct it.

Determining impeller spacer thickness (applicable for 3703/3700LF)

Applicable only to a new spare impeller spacer With an assembled power end:
1. Attach the seal chamber cover to the bearing frame.
2. Install impeller spacer as supplied between shaft and impeller.
3. Secure impeller to shaft with impeller cap screw or nut.
4. Place indicator on the coupling end of the shaft and zero it out (magnetic base attached to bearing frame).
5. Remove (or loosen to provide 3/8” travel) the thrust bearing end cover screws.
6. Install back pull-out assembly into the case and tighten down 3 or 4 nuts (equally spaced around the case).
7. Record the travel measured by the indicator.
8. Add .015" (3703) or .030” (3700LF) to the amount of travel measured and then machine this off the face of the impeller spacer.

Install the impeller (3700/3710)

CAUTION:
Wear heavy work gloves when you handle impellers. The sharp edges can cause physical injury.
It is recommended that you repeat the runout checks on the seal-chamber cover face, lock, and wear-ring surfaces as described in Install the seal-chamber cover (page 91).
1. Install the impeller key in the keyway of the shaft. The key should be at the top (12 o’clock) position for the impeller installation.
2. Install the impeller on the shaft. Apply anti-galling compound to the impeller bore to aid in assembly and disassembly.
3. Install the impeller nut and tighten to the torque values shown in the Maximum torque values for 3700 fasteners table. The impeller nut has left-hand threads.
4. Tighten the set screw in the end of the impeller nut.
5. Verify that the shaft turns freely. If you notice any rubbing or excessive drag, then determine the cause and correct it.
It is recommended that you repeat the runout checks on the impeller wear-ring surface as described in Replace the wear rings.

Install the impeller (3703)

CAUTION:
Wear heavy work gloves when you handle impellers. The sharp edges can cause physical injury.
It is recommended that you repeat the runout checks on the seal-chamber cover face and lock surfaces as described in Install the seal-chamber cover (page 91).
1. Install the impeller spacer on the shaft.
2. Install the impeller key in the keyway of the shaft. The key should be at the top (12 o’clock) position for the impeller installation.
3. Install the impeller on the shaft. Apply anti-galling compound to the impeller bore to aid in assembly and disassembly.
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4. Install the impeller nut and tighten to the torque values shown in the Maximum torque values for 3700 fasteners table. The impeller nut has left-hand threads.
5. Tighten the set screw in the end of the impeller nut.
6. Verify that the shaft turns freely. If you notice any rubbing or excessive drag, then determine the cause and correct it.
If you notice any rubbing or excessive drag, then determine the cause and correct it.

Install the impeller (3700LF)

CAUTION:
Wear heavy work gloves when you handle impellers. The sharp edges can cause physical injury.
It is recommended that you repeat the runout checks on the seal-chamber cover face and lock surfaces as described in Install the seal-chamber cover (page 91).
1. Install the impeller spacer on the shaft.
2. Install the impeller key in the keyway of the shaft. The key should be at the top (12 o’clock) position for the impeller installation.
3. Install the impeller on the shaft. Apply anti-galling compound to the impeller bore to aid in assembly and disassembly.
4. Install the impeller capscrew and tighten to the torque values shown in the Maximum torque values for 3700 fasteners table. The impeller capscrew has left-hand threads.
5. Verify that the shaft turns freely. If you notice any rubbing or excessive drag, then determine the cause and correct it.
Maintenance

Install the coupling hub

CAUTION:
Wear insulated gloves to handle the coupling hub. The coupling hub will get hot and can cause physical injury.
NOTICE:
If it is necessary to heat the coupling hub due to an interference fit, do not use a torch. Use a heating device such as an oven which uniformly heats the coupling hub.
1. Install the key and pump-half coupling hub on the shaft.
2. Make sure that the hub is flush with the end of the shaft or to the mark scribed during disassembly. Refer to coupling manufacturer’s instructions for assistance.
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Maintenance

Install the back pull-out assembly in the casing

1. Install a new casing gasket on the gasket surface of the casing. You can apply anti-galling compound to the casing fits to aid in assembly and disassembly.
2. Replace the back pull-out assembly in the casing using a lifting sling through the bearing frame or other suitable means.
3. Slide the back pull-out assembly into the proper position in the casing by loosening the jacking bolts evenly. Make sure that the casing gasket is not damaged.
4. Install the casing stud nuts.
5. Inspect the gap between the seal-chamber cover and casing and adjust the casing stud nuts as necessary to make the gap uniform.
6. Tighten the casing stud nuts uniformly, using an alternating pattern, until the seal-chamber cover is in metal-to-metal contact with the casing. Tighten each nut to the torque values shown in the Maximum torque values for 3700 fasteners table.
7. Verify that the shaft turns freely. If you detect any rubbing or excessive drag, then determine the cause and correct it.
8. Reinstall the coupling spacer, coupling guard, auxiliary piping, tubing, and equipment that was removed during preparation for disassembly.
9. Lubricate the bearings.
98 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
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