ITT Goulds Pumps 3700 Installation, Operation And Maintenance Manual
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ITT Goulds Pumps 3700 Installation, Operation And Maintenance Manual

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Installation, Operation, and
Maintenance Manual
Model 3700, 3703, 3710, 3700LF, 3700LFI API
Type OH2 / ISO 13709 1st and 2nd Ed. / API 610
8/9/10/11th Ed.

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Summary of Contents for ITT Goulds Pumps 3700

  • Page 1 Installation, Operation, and Maintenance Manual Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed.

  • Page 3: Table Of Contents

    Table of Contents Table of Contents 1 Introduction and Safety ............................ 4 1.1 Introduction..............................4 1.1.1 Requesting other information ......................4 1.2 Safety ................................ 4 1.2.1 Safety terminology and symbols ..................... 5 1.2.2 Environmental safety........................6 1.2.3 User safety ............................6 1.2.4 Product approval standards ......................
  • Page 4 Table of Contents 4.6.6 Final piping checklist ........................36 5 Commissioning, Startup, Operation, and Shutdown ................... 37 5.1 Preparation for startup..........................37 5.2 Remove the coupling guard ........................38 5.3 Check the rotation ........................... 39 5.4 Couple the pump and driver ........................40 5.4.1 Coupling guard assembly......................
  • Page 5 8 Parts Listings and Cross-Sectionals ......................120 8.1 Parts list..............................120 9 Local ITT Contacts ............................123 9.1 Regional offices............................. 123 Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Instal-...

  • Page 6: Introduction And Safety

    For instructions, situations, or events that are not consid- ered in this manual or in the sales documents, please contact the nearest ITT representative. Always specify the exact product type and identification code when requesting technical information or spare parts.

  • Page 7: Safety Terminology And Symbols

    Risk of injury and/or property damage. Operating a pump in an inappropriate application can cause over pressurization, overheating, and/or unstable operation. Do not change the service application without the approval of an authorized ITT representative. 1.2.1 Safety terminology and symbols...

  • Page 8: Environmental Safety

    WARNING: If the product has been contaminated in any way, such as from toxic chemicals or nuclear radi- ation, do NOT send the product to ITT until it has been properly decontaminated and advise ITT of these conditions before returning.
  • Page 9 1.2 Safety • Helmet • Safety goggles, preferably with side shields • Protective shoes • Protective gloves • Gas mask • Hearing protection • First-aid kit • Safety devices Electrical connections Electrical connections must be made by certified electricians in compliance with all international, nation- al, state, and local regulations.

  • Page 10: Product Approval Standards

    Use of equipment unsuitable for the environment can pose risks of ignition and/or explosion. Ensure the pump driver and all other auxiliary components meet the required area classifica- tion at the site. If they are not compatible, do not operate the equipment and contact an ITT representative before proceeding.

  • Page 11: Product Warranty

    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.
  • Page 12 1.3 Product warranty • Genuine ITT parts are used. • Only Ex-approved spare parts and accessories authorized by ITT are used in Ex-approved prod- ucts. Limitations The warranty does not cover faults caused by these situations: • Deficient maintenance •...

  • Page 13: Transportation And Storage

    2 Transportation and Storage 2 Transportation and Storage 2.1 Inspect the delivery 2.1.1 Inspect the package Inspect the package for damaged or missing items upon delivery. Note any damaged or missing items on the receipt and freight bill. 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.
  • Page 14 2.2 Transportation guidelines Table 1: Methods Pump type Lifting method A bare pump without lifting handles Use a suitable sling attached properly to solid points like the casing, the flang- es, or the frames. A bare pump with lifting handles Lift the pump by the handles.

  • Page 15: Storage Guidelines

    You can purchase long-term storage treatment with the initial unit order or you can purchase it and apply it after the units are already in the field. Contact your local ITT sales representative. 2.4 Frostproofing...

  • Page 16: Product Description

    3 Product Description 3 Product Description 3.1 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). Figure 4: 3700 pump Casing The casing is a centerline-mounted design. The gasket is fully confined. The standard flanges are ANSI Class 300 raised-face serrated.

  • Page 17: Nameplate Information

    3.2 Nameplate information Table 3: Impeller 3700/3710 3700LF/3703/3700LFI Enclosed Impeller Semi-open Impeller Seal-chamber cover The seal-chamber cover meets API 682 3rd Edition dimensions for improved performance of mechanical seals. Power end The power end has the following characteristics: • Standard ring oil-lubricated bearings •...
  • Page 18 3.2 Nameplate information • Item numbers of the required parts Item numbers can be found in the spare parts list. Refer to the nameplate on the pump casing for most of the information. See Parts List for item numbers. Nameplate types Nameplate Description Pump casing...
  • Page 19 3.2 Nameplate information Nameplate on the pump casing using metric units Figure 6: Metric units - nameplate on pump casing Nameplate field Explanation MODEL Pump model SIZE Size of the pump FLOW Rated pump flow, in cubic meters per hour HEAD Rated pump head, in meters Rated pump speed, in revolutions per minute...
  • Page 20 Use of equipment unsuitable for the environment can pose risks of ignition and/or explosion. Ensure the pump driver and all other auxiliary components meet the required area classifica- tion at the site. If they are not compatible, do not operate the equipment and contact an ITT representative before proceeding.

  • Page 21: Installation

    Electrical connections must be made by certified electricians in compliance with all inter- national, national, state and local regulations. • Supervision by an authorized ITT representative is recommended to ensure proper instal- lation. Improper installation may result in equipment damage or decreased performance. 4.1.1 Pump location guidelines...

  • Page 22: Foundation Requirements

    4.1 Pre-installation 4.1.2 Foundation requirements Requirements • The foundation must weigh not less than three times the combined weight of the pump, driver, baseplate and auxiliaries. • Provide a flat, substantial concrete foundation in order to prevent strain and distortion when you tighten the foundation bolts.

  • Page 23: Baseplate-Mounting Procedures

    4.2 Baseplate-mounting procedures 4.2 Baseplate-mounting procedures 4.2.1 Prepare the baseplate for mounting This procedure assumes you have a basic knowledge of baseplate and foundation design and installa- tion methods. Follow industry-standard procedures, such as API RP 686/ PIP REIE 686, or this proce- dure before you grout the baseplate.
  • Page 24 4.2 Baseplate-mounting procedures • Two machinist's levels This procedure is applicable to the feature-fabricated steel baseplate and the advantage base baseplate. Apply an anti-seize compound on the jackscrews. The compound makes it easier to remove the screws after you grout. Lower the baseplate carefully onto the foundation bolts and perform these steps: Cut the plates from the bar stock and chamfer the edges of the plates in order to reduce stress concentrations.

  • Page 25: Install The Pump, Driver, And Coupling

    4.3 Install the pump, driver, and coupling NOTICE: Remove all dirt from the mounting pads in order to ensure that the correct leveling is achieved. Failure to do so can result in equipment damage or decreased performance. Put one machinist's level lengthwise on one of the two pads. Put the other level across the center of the two pads.

  • Page 26: Alignment Checks

    The specified permitted reading values are valid only at operating temperature. For cold set- tings, other values are permitted. The correct tolerances must be used. Failure to do so can result in misalignment. Contact ITT for further information. IMPORTANT •...

  • Page 27: Alignment Measurement Guidelines

    4.4 Pump-to-driver alignment 4.4.3 Alignment measurement guidelines Guideline Explanation Rotate the pump coupling half and the driver coupling half together This prevents incorrect measurement. so that the indicator rods have contact with the same points on the driver coupling half. Move or shim only the driver in order to make adjustments.
  • Page 28 4.4 Pump-to-driver alignment When the Then... reading val- ue is... Negative The coupling halves are farther apart at the 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. •...
  • Page 29 4.4 Pump-to-driver alignment Figure 14: Example of incorrect horizontal alignment (top view) Repeat the previous steps until the permitted reading value is achieved. 4.4.5.3 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.
  • Page 30 The specified permitted reading values are valid only at operating temperature. For cold set- tings, other values are permitted. The correct tolerances must be used. Failure to do so can result in misalignment. Contact ITT for further information. 4.4.5.4 Perform parallel alignment for a horizontal correction Refer to the alignment table in "Permitted indicator values for alignment checks"...

  • Page 31: Grout The Baseplate

    4.5 Grout the baseplate Set the angular and parallel dial indicators to zero at the top-center position (12 o’clock) of the driver coupling half (Y). Rotate the indicators to the bottom-center position (6 o’clock). Record the indicator readings. Make corrections according to the separate instructions for angular and parallel alignment until you obtain the permitted reading values.

  • Page 32: Piping Checklists

    4.6 Piping checklists Item Description Baseplate Grout Foundation Bolt Figure 17: Fill remainder of baseplate with grout Remove the leveling jackscrews after the grout hardens in order to remove any stress points. Tighten the foundation bolts. 4.6 Piping checklists 4.6.1 General piping checklist Precautions WARNING: •...
  • Page 33 4.6 Piping checklists 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. NOTICE: Vary the capacity with the regulating valve in the discharge line.

  • Page 34: Suction-Piping Checklist

    4.6 Piping checklists Example: Installation for expansion Correct Incorrect This illustration shows a correct installation for expan- This illustration shows an incorrect installation for expan- sion: sion: Expansion loop/joint 4.6.2 Suction-piping checklist Performance curve reference Net positive suction head available (NPSH ) must always exceed NPSH required (NPSH ) as shown on the published performance curve of the pump.
  • Page 35 4.6 Piping checklists Check Explanation/comment Checked If more than one pump operates from the This recommendation helps you to achieve a higher same liquid source, check that separate pump performance and prevent vapor locking espe- suction-piping lines are used for each cially with specific gravity of liquid less than 0.60.
  • Page 36 4.6 Piping checklists 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 di- ameters. Example: Suction piping equipment Correct Incorrect Suction pipe sloping upwards from liquid source Air pocket, because the eccentric reducer is not...

  • Page 37: Discharge Piping Checklist

    4.6 Piping checklists 4.6.3 Discharge piping checklist Checklist Check Explanation/comment Checked Check that an isolation valve is installed in The isolation valve is required for: the discharge line. For specific gravity less • Priming than 0.60, minimize distance from pump •...

  • Page 38: Bypass-Piping Considerations

    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 (mini- mum-flow orifice) is not possible.

  • Page 39: Commissioning, Startup, Operation, And Shutdown

    5 Commissioning, Startup, Operation, and Shutdown 5 Commissioning, Startup, Operation, and Shutdown 5.1 Preparation for startup WARNING: • Risk of serious physical injury or death. Exceeding any of the pump operating limits (e.g. - pressure, temperature, power, etc.) could result in equipment failure, such as explosion, seizure, or breach of containment.

  • Page 40: Remove The Coupling Guard

    5.2 Remove the coupling guard • Electrical connections must be made by certified electricians in compliance with all international, national, state, and local rules. • Refer to driver/coupling/gear manufacturer's installation and operation manuals (IOM) for specific instructions and recommendations. • Risk of seizure, breach of containment, or explosion.

  • Page 41: Check The Rotation

    5.3 Check the rotation Slide the driver half of the coupling guard toward the pump. Remove the nut, bolt, and washers from the driver half of the coupling guard. Remove the driver half of the coupling guard: Slightly spread the bottom apart. Lift upwards.

  • Page 42: Couple The Pump And Driver

    5.4 Couple the pump and driver Lock out power to the driver. Make sure that the coupling hubs are fastened securely to the shafts. Make sure that the coupling spacer is removed. The pump ships with the coupling spacer removed. Unlock power to the driver.
  • Page 43 5.4 Couple the pump and driver • Failure to disconnect and lock out driver power may result in serious physical injury or death. Always disconnect and lock out power to the driver before performing any installation or maintenance tasks. • Electrical connections must be made by certified electricians in compliance with all international, national, state, and local rules.
  • Page 44 5.4 Couple the pump and driver 234B End plate 370N Bearing frame bolts Figure 19: Thrust bearing end cover removal 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.
  • Page 45 5.4 Couple the pump and driver Place one washer over the bolt and insert the bolt through the round hole at the front end of the guard half. Place a second washer over the exposed end of the bolt. Thread a nut onto the exposed end of the bolt and tighten firmly. This figure shows the proper sequence of components: Item Description Washer...
  • Page 46 5.4 Couple the pump and driver Item Description Annular groove Coupling guard half Driver Figure 22: Coupling guard 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. Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed.
  • Page 47 5.4 Couple the pump and driver Item Description Annular groove End plate Figure 23: End plate and annular groove Repeat Steps 3. through 5.4.1.1 Install the coupling guard on page 41 for the rear end of the cou- pling guard half, except that you hand tighten the nut. Slide the rear coupling guard half towards the motor so that it completely covers the shafts and cou- pling.
  • Page 48 5.4 Couple the pump and driver Firmly tighten all nuts on the guard assembly. 5.4.1.2 Install the coupling guard with the optional air cooling package Is the deflector-fan guard support installed? • If yes: Make any necessary coupling adjustments and then proceed to step 2. •...
  • Page 49 5.4 Couple the pump and driver Remove the thrust bearing end cover and the bearing frame screws. Align the thrust deflector-fan guard support with the thrust bearing end cover so that the sup- port slots align with the holes in the end cover. Replace the thrust bearing end cover and bearing frame screws and torque to values shown in the Maximum torque values for 3700 fasteners table.
  • Page 50 5.4 Couple the pump and driver Rear coupling guard half Annular groove Deflector fan guard Driver Figure 27: Rear coupling-guard half installation Locate the opening (flange) so that it does not interfere with the piping but does allow access for installing the bolts.
  • Page 51 5.4 Couple the pump and driver Item Description Washer Bolt This figure shows an assembled unit: Driver Coupling guard half Figure 29: Assembled unit Slightly spread the opening of the remaining coupling guard half and place it over the installed cou- pling guard half so that the annular groove in the remaining coupling guard half faces the driver.
  • Page 52 5.4 Couple the pump and driver Annular groove Coupling guard half Driver Figure 30: Remaining coupling guard half installation 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. Annular groove End plate Figure 31: End plate installation...

  • Page 53: Bearing Lubrication

    5.4 Couple the pump and driver 10. Repeat steps 5 through 7 for the rear end of the coupling guard half, except that you hand tighten the nut. Slide the rear coupling guard half towards the motor so that it completely covers the shaft and cou- pling.
  • Page 54 5.4 Couple the pump and driver 5.4.2.1 Oil volumes Oil volume requirements for ball/ball and sleeve/ball bearings All frames in this table use a Watchdog Oiler, which has a capacity of 118ml | 4 oz. Frame Frame oil volume milliliters ounces 1115 MX, LA...
  • Page 55 5.4 Couple the pump and driver 5.4.2.4 Lubricate the bearings with oil WARNING: Risk of explosive hazard and premature failure from sparks and heat generation. Ensure bearings are properly lubricated prior to startup. NOTICE: Do not expose an idle pump to freezing conditions. Drain all liquid that will freeze that is inside the pump and any auxiliary equipment.

  • Page 56: Shaft Sealing With A Mechanical Seal

    5.5 Shaft sealing with a mechanical seal 5.4.2.5 Lubricate the bearings with pure or purge-oil mist (optional) Before lubricating with purge-oil mist, make sure that the bearing frame is properly lubricated. See Lubri- cating the bearings. Prepare the oil-mist generator according to the manufacturer's instructions. Connect the oil-mist supply lines to the inlet connections.

  • Page 57: Connection Of Sealing Liquid For Mechanical Seals

    If the seal has been installed in the pump by ITT, these clips have already been disengaged, however this should be verified by the customer prior to start-up.

  • Page 58: Prime The Pump With The Suction Supply Above The Pump

    5.7 Pump priming 5.7.1 Prime the pump with the suction supply above the pump Slowly open the suction isolation valve. Open the air vents on the suction and discharge piping until the pumped fluid flows out. Close the air vents. Item Description Discharge isolation valve Check valve...
  • Page 59 5.7 Pump priming Item Description Discharge isolation valve Shutoff valve From outside supply Foot valve Check valve Figure 36: Pump priming with suction supply below pump with foot valve and an outside supply Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Instal- lation, Operation, and Maintenance Manual...

  • Page 60: Other Methods Of Priming The Pump

    5.8 Start the pump Item Description By-pass line Shutoff valve Foot valve Check valve Discharge isolation valve Figure 37: Pump priming with suction supply below pump with foot valve using bypass around check valve 5.7.3 Other methods of priming the pump You can also use these methods in order to prime the pump: •...

  • Page 61: Pump Operation Precautions

    5.9 Pump operation precautions NOTICE: Risk of equipment damage on pure or purge-oil mist-lubricated units. Remove the viewing port plugs to verify that oil mist is flowing properly. Reinstall the plugs after confirming. Before you start the pump, you must perform these tasks: •...
  • Page 62 5.9 Pump operation precautions • Make sure the oil level has remained steady by checking the oiler. • Check the bearing temperatures using a pyrometer or other temperature-measuring de- vice. Monitor the bearing temperature frequently during initial operation in order to deter- mine if a bearing problem exists, as well as to establish normal bearing operating temper- ature.

  • Page 63: Shut Down The Pump

    5.10 Shut down the pump 5.10 Shut down the pump WARNING: Precautions must be taken to prevent physical injury. The pump may handle hazardous and/or toxic fluids. Proper personal protective equipment should be worn. Pumpage must be handled and disposed of in conformance with applicable environmental regulations. Slowly close the discharge valve.
  • Page 64 5.12 Dowel the pump casing (optional) Dowel the pump casing to the baseplate pedestals in order to make sure that you maintain the proper pump position. 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.

  • Page 65: Maintenance

    6 Maintenance 6 Maintenance 6.1 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 envi- ronment is classified as potentially explosive.

  • Page 66: Bearing Maintenance

    Cartridge seals installed by the user require disengagement of the hold- ing 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 instal- lation and setting.

  • Page 67: Disassembly

    6.4 Disassembly Mechanical seal life The life of a mechanical seal depends on the cleanliness of the pumped fluid. Due to the diversity of op- erating conditions, it is not possible to give definite indications as to the life of a mechanical seal. 6.4 Disassembly 6.4.1 Disassembly precautions WARNING:...

  • Page 68: Drain The Pump

    6.4 Disassembly • Induction heater • Lifting sling • Micrometer • Open end wrenches • Press • Soft face hammer • Spanner wrench • Spanning type puller • • Torque wrench with sockets • Lifting eyebolt (dependent on pump / motor size) 6.4.3 Drain the pump CAUTION: •...

  • Page 69: Remove The Coupling Hub

    6.4 Disassembly 184 Seal chamber cover 418 Jackscrew Figure 38: Jackscrew tightening Remove the back pull-out assembly using a lifting sling through the bearing frame. Figure 39: Lifting sling through bearing frame Remove and discard the casing gasket. You will insert a new casing gasket during reassembly. Remove the jackscrews.

  • Page 70: Remove The Impeller (3700/3710)

    6.4 Disassembly 6.4.6 Remove the impeller (3700/3710) CAUTION: Risk of physical injury from sharp edges. Wear heavy work gloves when handling impellers. Loosen the set screw at the end of the impeller nut. Loosen and remove the impeller nut. The impeller nut has left-hand threads. 122 Shaft 198A Set screw 304 Impeller nut...

  • Page 71: Remove The Impeller (3700Lf/3700Lfi)

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

  • Page 72: Remove Venturi Insert

    6.4 Disassembly 6.4.9 Remove venturi insert Loosen insert hex nuts (362B). Tighten the jackscrews (362C) evenly in order to remove the venturi insert (100W). Case 100W Venturi insert 351O Venturi insert gasket 362A Insert stud 362B Insert hex nuts 362C Insert jacking bolt Figure 41: Venturi insert removal 6.4.10 Remove the seal-chamber cover...

  • Page 73: Remove The Optional Water-Jacket Cover

    6.4 Disassembly 370H 360Q Shaft Seal-chamber cover Bearing frame Gland stud nuts 360Q Gland gasket 370H Bearing frame bolts Figure 42: Seal-chamber cover removal Guide the seal-chamber cover over the end of the shaft once the cover releases from the bearing frame.

  • Page 74: Disassemble The Power End

    6.4 Disassembly 6.4.12 Disassemble the power end This procedure explains how to disassemble a standard ring-oil or optional purge-oil mist-lubricated pow- er end and includes information for the disassembly of these optional features: • Pure oil-mist-lubricated power end • Radial-heat-flinger end •...
  • Page 75 6.4 Disassembly Shaft 123B Radial deflector fan 123E Thrust deflector fan Deflector set screw Bearing frame Thrust deflector-fan guard 234D Thrust deflector-fan guard support 496Q Support screws Figure 43: Thrust-fan guard support removal Loosen and remove the thrust-bearing end cover and bearing-frame screws. Pry the thrust-bearing end cover thrust deflector out of the bearing frame.
  • Page 76 6.4 Disassembly 109A Thrust-bearing end cover Shaft 123A Thrust deflector Bearing frame 358E Oil ring inspection plug 360A Gasket 370N Bearing-frame screw 390C Thrust-bearing end-cover shim 469P Oil ring retainer Figure 44: Thrust bearing end cover removal Figure 45: Thrust bearing end cover shims Remove and discard the thrust-bearing end-cover shims.
  • Page 77 6.4 Disassembly For all except SA and MA bearing frames, replace with new shims during reassembly. 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.
  • Page 78 6.4 Disassembly Press or pull the duplex thrust bearing from the shaft. 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. Press or pull the radial bearing from the shaft. 10.

  • Page 79: Preassembly Inspections

    6.5 Preassembly inspections If your pump is... Then... Figure 48: Radial-bearing end cover and radial deflector with gasket (or radial deflector) removal Remove any remaining plugs and fittings. 6.5 Preassembly inspections 6.5.1 Replacement guidelines Casing check and replacement WARNING: Risk of death or serious injury. Leaking fluid can cause fire and/or burns. Inspect and ensure gasket sealing surfaces are not damaged and repair or replace as necessary.
  • Page 80 6.5 Preassembly inspections Impeller replacement This table shows the criteria for replacing the impeller: Impeller parts When to replace Impeller vanes • When grooved deeper than 1.6 mm | 1/16 in., or • When worn evenly more than 0.8 mm | 1/32 in. Pumpout vanes When worn or bent more than 0.8 mm | 1/32 in.
  • Page 81 6.5 Preassembly inspections 100W Venturi insert Figure 51: Venturi Insert inspections 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.

  • Page 82: Fastening

    6.5 Preassembly inspections 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: • Venturi Insert (100W)* • Bearing end covers (109A) and (119A) •...

  • Page 83: Bearings Inspection

    6.5 Preassembly inspections Shaft inspection 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. Figure 52: Shaft inspection 6.5.4 Bearings inspection Condition of bearings Do not reuse bearings.
  • Page 84 6.5 Preassembly inspections Wear ring diameter check Measure all wear ring diameters and then calculate the diametrical wear ring clearances. See the Mini- mum running clearances table for more information. 100 Casing 164 Casing wear ring Figure 53: Casing wear ring 101 Impeller 202 Impeller wear ring 203 Impeller wear ring (No Requirement for 3700LF/3700LFI)
  • Page 85 6.5 Preassembly inspections 125 Seal-chamber throat bushing 184 Seal-chamber cover 230 Seal-chamber cover wear ring Figure 55: 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.
  • Page 86 6.5 Preassembly inspections 6.5.5.1 Replace the wear rings WARNING: Dry ice and other chilling substances can cause physical injury. Contact the supplier for infor- mation and advice for proper handling precautions and procedures. (Not applicable for 3700LF/3700LFI) CAUTION: • Excessive machining can damage ring fits and render parts unusable. •...
  • Page 87 6.5 Preassembly inspections Item Description 101 Impeller 202 Impeller wear ring 203 Impeller wear ring 320 Set screw Figure 56: Impeller wear ring Chill the new casing wear ring using dry ice or another suitable chilling substance and install the ring into the casing fit.
  • Page 88 6.5 Preassembly inspections 184 Cover 222E Set screw 230 Seal-chamber-cover wear ring Figure 58: Seal chamber cover wear ring Check the casing wear ring runout and distortion: Measure the bore at each set screw location with inside micrometers or vernier calipers. Correct any distortion in excess of 0.08 mm | 0.003 in.
  • Page 89 6.5 Preassembly inspections NOTICE: • All replacement impeller wear rings, except those that are hard-faced, are supplied 0.51 mm to 0.75 mm | 0.020 in. to 0.030 in. 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.

  • Page 90: Seal-Chamber Cover Inspection And Replacement

    6.5 Preassembly inspections 101 Impeller 122 Shaft 202 Casing-side impeller wear-ring 228 Seal-chamber cover side wear ring Figure 61: Impeller wear-ring runout If the impeller wear ring runout is in excess of 0.13 mm | 0.005 in.: Check for distortion at the set screw areas. Check the shaft runout and all mating surfaces of the shaft and impeller hub for perpendicularity.
  • Page 91 6.5 Preassembly inspections 125 Seal-chamber throat bushing 184 Seal-chamber cover 230 Seal-chamber cover wear ring (not present on 3703/3700LF/3700LFI) Seal-chamber cover replacement Seal-chamber cover part When to replace Seal-chamber cover surfaces When worn, damaged, or corroded more than 3.2 mm | 0.126 in. deep Inside diameter of seal-chamber cover When the diametral clearance between the bushing and the impeller bushing...

  • Page 92: Bearing-Frame Inspection

    6.5 Preassembly inspections Thoroughly clean the bushing fit in the seal-chamber cover. Chill the new bushing using dry ice or another suitable chilling substance, and install the bush- ing 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.

  • Page 93: Bearing Fits And Tolerances

    6.5 Preassembly inspections Surface inspection locations This figure shows the areas to inspect for wear on the bearing frame surface. Figure 64: Surface inspection locations 6.5.8 Bearing fits and tolerances Table 9: Bearing fits and tolerances table (SI units) This table references the bearing fits and tolerances according to ISO 286 (ANSI/ABMA Standard 7) in milli- meters | inches.

  • Page 94: Reassembly

    6.6 Reassembly Location Description MX, LA LX, XLA Interference 0.002 | 0.002 | 0.002 | 0.002 | 0.002 | 0.003 | 0.002 | 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.025 | 0.030 | 0.025 | 0.030 | 0.030 | 0.038 | 0.038 | 0.0010...
  • Page 95 6.6 Reassembly • 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 demagnetize 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.
  • Page 96 6.6 Reassembly CAUTION: Risk of physical injury from hot bearings. Wear insulated gloves when using a bearing heater. NOTICE: Do not use a torch and do not use force. Coat the internal surface of the bearings with the lubricant that is to be used in service. Assemble the radial-end bearing (168) onto the shaft (122).
  • Page 97 6.6 Reassembly • The outer races generally cannot be counter-rotated by hand, but if they do move, the resist- ance must be high. • If the outer races are loose, the bearing is not properly seated and must be retightened. When you have achieved the proper bearing assembly, set the lockwasher tab in the slot in the locknut.
  • Page 98 6.6 Reassembly 123 Radial INPRO oil seal 228 Bearing frame Figure 67: Radial INPRO oil seal installation Assemble the shaft assembly and bearing frame: Coat the outer races of the bearings with a compatible oil. Coat the internal bearing surfaces of the bearing frame with a compatible oil. Position the oil rings in the grooves of the shaft.

  • Page 99: Assemble The Frame

    6.6 Reassembly 109A Thrust-bearing end cover Shaft 123A Thrust deflector Bearing frame 358E Oil ring inspection plug 360A Gasket 370N Bearing-frame screw 390C Thrust-bearing end-cover shim 469P Oil ring retainer Figure 68: Shaft and bearing frame assembly Carefully guide the shaft and bearing assembly into the bearing frame until the thrust bearing is seated against the shoulder of the frame.
  • Page 100 6.6 Reassembly • 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. Perform the following based on your pump: If your pump is...
  • Page 101 6.6 Reassembly Figure 70: Axial end play determination Determine the axial end play as follows: Mount the dial indicator. Use a lever to apply axial force to the impeller end of the shaft and firmly seat the thrust bear- ing against the shoulder in the bearing frame. Apply axial force in the opposite direction and firmly seat the thrust bearing against the thrust- bearing end cover.
  • Page 102 6.6 Reassembly If your power Then... end... Has the op- Position the thrust-fan guard support on the thrust-bearing end cover. tional air-cool- Install and tighten the thrust-bearing end cover and bearing-frame s3700crews ing package evenly to torque values shown in the Maximum torque values for fasteners table. Install the thrust fan over the shaft.
  • Page 103 6.6 Reassembly Check Procedure Shaft Mount the dial indicator on the bearing frame. impel- Rotate the shaft through a maximum arc from one side of the keyway to the other. If the ler fit total indicator reading is greater than 0.050 mm | 0.002 in., determine the cause and correct Shaft Mount the dial indicator.

  • Page 104: Install The Optional Water-Jacket Cover

    6.6 Reassembly Check Procedure Bear- Mount the dial indicator on the shaft. ing- Rotate the shaft so that the indicator rides along the bearing-frame lock for 360°. If the total frame indicator reading is greater than 0.10 mm | 0.004 in., then disassemble and determine the cause and correct it.

  • Page 105: Install The Seal-Chamber Cover

    6.6 Reassembly 184 Seal-chamber cover 412S Outer water-jacket-cover O-ring 490 Water jacket cover 497T Outer and inner water-jacket-cover O-ring Figure 72: Optional water jacket cover Lubricate the sealing surfaces in the seal-chamber cover and O-rings with a suitable lubricant. 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.
  • Page 106 6.6 Reassembly Shaft Seal-chamber cover Bearing frame Seal-chamber cover wear-ring 370H Bearing-frame bolts Figure 73: Seal chamber cover Set up a sling from the eyebolt to the overhead lifting device. Lift the seal-chamber cover and position it so that it aligns with the shaft. Install the seal-chamber cover on the bearing-frame assembly: Guide the cover carefully over the shaft and into the bearing-frame lock.
  • Page 107 6.6 Reassembly Figure 74: Seal-chamber cover face runout Check the seal-chamber cover lock runout: Mount the dial indicator on the shaft. Rotate the shaft so that the indicator rides along the seal-chamber cover lock for 360°. If the total indicator reading is greater than 0.13 mm | 0.005 in., determine the cause and correct it. Figure 75: Seal-chamber cover lock runout NOTICE: The impeller and wear-ring clearance setting procedures must be followed.
  • Page 108 6.6 Reassembly Mount the dial indicator on the shaft. Rotate the shaft so that the indicator rides on the seal-chamber cover wear-ring surface for 360°. If the total indicator reading exceeds 0.15 mm | 0.006 in., determine the cause and correct it. Figure 76: Seal-chamber cover wear-ring runout Check the seal-chamber face runout: Mount a dial indicator on the shaft.

  • Page 109: Install The Cartridge-Type Mechanical Seal And Seal-Chamber Cover

    6.6 Reassembly Figure 77: Seal-chamber face runout Check the seal-chamber lock (register) runout: Mount a dial indicator on the shaft or shaft sleeve. Rotate the shaft so that the indicator rides along the seal-chamber lock (register) for 360°. If the total indicator reading is greater than 0.125 mm | 0.005 in., determine the cause and correct it. Figure 78: Seal-chamber lock (register) runout 6.6.5 Install the cartridge-type mechanical seal and seal-chamber cover NOTICE:...
  • Page 110 6.6 Reassembly The impeller nut has left-hand threads. Remove the impeller, impeller key, and seal-chamber cover as described in the Disassembly section. Lubricate all O-rings with suitable lubricant, unless the seal manufacturer’s instructions indicate oth- erwise. 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.

  • Page 111: Determining Impeller Spacer Thickness (Applicable For 3703/3700Lf/3700Lfi)

    6.6 Reassembly 6.6.6 Determining impeller spacer thickness (applicable for 3703/3700LF/ 3700LFI) Applicable only to a new spare impeller spacer With an assembled power end: Attach the seal chamber cover to the bearing frame. Install impeller spacer as supplied between shaft and impeller. Secure impeller to shaft with impeller cap screw or nut.

  • Page 112: Install The Impeller (3700Lf/3700Lfi)

    6.6 Reassembly 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. Tighten the set screw in the end of the impeller nut. Verify that the shaft turns freely. If you notice any rubbing or excessive drag, then determine the cause and correct it.

  • Page 113: Install The Back Pull-Out Assembly In The Casing

    6.6 Reassembly Figure 80: Coupling hub installation 6.6.11 Install the back pull-out assembly in the casing 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. Replace the back pull-out assembly in the casing using a lifting sling through the bearing frame or other suitable means.

  • Page 114: Install The Venturi Insert (3700Lfi Only)

    6.6 Reassembly Verify that the shaft turns freely. If you detect any rubbing or excessive drag, then determine the cause and correct it. Reinstall the coupling spacer, coupling guard, auxiliary piping, tubing, and equipment that was re- moved during preparation for disassembly. Lubricate the bearings.

  • Page 115: Assembly References

    6.6 Reassembly • Rotate the shaft by hand in order to make sure that it rotates easily and smoothly and that there is no rubbing. • Open the isolation valves and check the pump for leaks. 6.6.14 Assembly references 6.6.14.1 Maximum torque values for fasteners About this table The torque values specified in this table are for lubricated threads.
  • Page 116 6.6 Reassembly 2238, 2239 (A 193 B7) ¼-2 ½ dia: Sult = 125 2299 (A 320 L7) ¼-2 ½ ksi, Sy=105 ksi over 2 ½ – 4: Sult = 115 ksi, dia: Sult = 125 ksi, Sy=95 ksi over 4 – 7: Sult = 100 ksi, Sy=75 ksi Sy=105 ksi Bolt Dia.
  • Page 117 6.6 Reassembly 2226, 2228: 303, 304SS, SAE F593 A193 B8, B8M Cl 1, A276 Tp 304, Group 1 2229: 316SS, SAE F593 A582 Tp 303 Group 2 Yield strength: Yield strength=30000 psi Bolt Dia. (D) Tensile Stress 65000 psi for 0.25 <=dia<=0.625 (in.–...
  • Page 118 6.6 Reassembly Bolt Dia. (D) (in.– threads/ Tensile Stress Area Torque N-m | ft-lbs Nickel Max. Preload (lbs) inch) (Ab) (sq-in) or Moly Anti-seize, K=0.15 9/16–12 0.1819 4584 43 | 32 5/8–11 0.226 5695 60 | 44 3/4–10 0.3345 8429 107 | 79 7/8–9 0.4617...
  • Page 119 6.6 Reassembly • Radial heat flinger (123B) • Thrust fan (123E) • Impeller key (178) An alternative approach is to stock a complete back pull-out assembly. This is a group of assembled parts which includes all but the casing and coupling. Recommended spare parts When ordering spare parts, always state the serial number, and indicate the part name and item number from the relevant sectional drawing.

  • Page 120: Troubleshooting

    The shaft is rotating in the wrong direction. Change the rotation. The rotation must match the arrow on the bearing housing or pump casing. The foot valve or suction pipe opening is Consult an ITT representative for the proper not submerged enough. submersion depth. Use a baffle in order to eliminate vortices.

  • Page 121: Alignment Troubleshooting

    If this does liquid. not help, then contact your ITT representa- tive. The liquid is heavier than expected. Check the specific gravity and viscosity. The stuffing-box packing is too tight.

  • Page 122: Parts Listings And Cross-Sectionals

    8 Parts Listings and Cross-Sectionals 8 Parts Listings and Cross-Sectionals 8.1 Parts list Table 15: Parts list with standard materials of construction 3700/3703/3710/3700LF/3700LFI The materials in this table are typical. Refer to the order documentation for the actual materials furnished. Item Part name Quanti-...
  • Page 123 8.1 Parts list Item Part name Quanti- Construction - API designation ty per pump 222E Set screw, stationary wear 2229 rings Bearing frame 1212 Wear ring, seal-chamber cov- 1001 1232 6983 1232 6983 er (3700/3710/3703 only) Deflector fan guard 3201 234D Support, deflector fan guard 3201...
  • Page 124 8.1 Parts list Item Part name Quanti- Construction - API designation ty per pump Coupling nut 2210 3700LFI is not available in the S-4 API Designation 2213 for 3700LFI Table 16: Materials cross-reference chart Material Goulds Pumps Material Code ASTM Material Designation Other Cast iron 1000 A48 Class 25...

  • Page 125: Local Itt Contacts

    Los Angeles Vertical Products Operation +1 562-949-2113 +1 562-695-8523 3951 Capitol Avenue City of Industry, CA 90601-1734 Asia Pacific ITT Fluid Technology Asia Pte +65 627-63693 +65 627-63685 1 Jalan Kilang Timor #04-06 Singapore 159303 Europe ITT - Goulds Pumps...
  • Page 126 Visit our website for the latest version of this document and more information: www.gouldspumps.com Goulds Pumps 240 Fall Street Seneca Falls, NY 13148 Form IOM.3700.en-US.2020-09 ©2020 ITT Inc. The original instruction is in English. All non-English instructions are translations of the original instruction.

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Goulds pumps 3703Goulds pumps 3710Goulds pumps 3700lfGoulds pumps 3700lfi api

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