INSTALLATION, · Installation of the pump is performed in the sequence described in paragraphs 3.5 through 3.10. Final alignment (paragraph 3.9) and dowelling (paragraph 3.12) are

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS FOR A MULTI-STAGE MULTIPLEX PUMP

Rev. 0 BW/IP International Inc., Pump Division 0-MULT-01

iii

INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS Pump Size & Type:.......................................................................................... Pump Service: ................................................................................................. Pump Serial Number: ...................................................................................... Prepared For: .................................................................................................. Purchase Order Number: ................................................................................ Site:..................................................................................................................


iv

FOREWORD

This manual provides installation, operation, and maintenance instructions for the pump described herein. Outlined within are the general procedures that must be observed to ensure long, trouble free service. It is assumed that site personnel are familiar with the basic principles and tools involved in the installation, care and service of pumps. Successful operation is dependent on careful study of the manual and a well planned maintenance program. Should questions arise which are not specifically answered, please contact the nearest BW/IP International, Inc., Pump Division sales office or the dealer through whom the unit was purchased for additional information. All inquiries should identify the applicable pump by type, size and serial number as shown on the pump nameplate.


v

TABLE OF CONTENTS PARAGRAPH NUMBER SECTION ONE DESIGN DATA DESIGN DATA....................................................................................... 1.1 SECTION TWO DESCRIPTION PUMP..................................................................................................... 2.1 Case................................................................................................ 2.1.1 Rotating Element ............................................................................ 2.1.2 Bearings and Housings .................................................................. 2.1.3 Shaft Seals...................................................................................... 2.1.4 SECTION THREE INSTALLATION GENERAL.............................................................................................. 3.1 SHIPMENT CONFIGURATION............................................................. 3.2 SITE EQUIPMENT REQUIRED............................................................ 3.3 HANDLING PRECAUTIONS................................................................. 3.4 UNLOADING AND CHECKING ............................................................3-5 FOUNDATION PREPARATION............................................................ 3.6 BASEPLATE LEVELING AND GROUTING ......................................... 3.7 BEARING HOUSING CLEANING AND LUBRICATION....................... 3.8 DRIVE COUPLING INSTALLATION AND ALIGNMENT...................... 3.9 MAIN PIPING CONNECTION ............................................................. 3.10 AUXILIARY EQUIPMENT CONNECTION.......................................... 3.11 DOWELING ......................................................................................... 3.12 SITE STORAGE .................................................................................. 3.13 SECTION FOUR OPERATION OPERATING PRECAUTIONS .............................................................. 4.1 PRELIMINARY CHECK......................................................................... 4.2 OPERATING CHECK............................................................................ 4.3 SECTION FIVE MAINTENANCE GENERAL.............................................................................................. 5.1 PREVENTATIVE MAINTENANCE........................................................ 5.2 TROUBLE-SHOOTING ......................................................................... 5.3 SITE EQUIPMENT REQUIRED (CUSTOMER SUPPLIED) ................ 5.4 HANDLING INSTRUCTIONS................................................................ 5.5 Handling Precautions...................................................................... 5.5.1 Lifting Methods................................................................................ 5.5.2 TABLE OF CONTENTS (CONTINUED)


vi

PUMP DISASSEMBLY.......................................................................... 5.6 Preparation For Disassembly ......................................................... 5.6.1 Coupling Removal .......................................................................... 5.6.2 Thrust Bearing and Housing Removal ........................................... 5.6.3 Radial Bearing and Housing Removal ........................................... 5.6.4 Shaft Seal Removal ........................................................................ 5.6.5 Pump Case Removal...................................................................... 5.6.6 Rotating Element Disassembly....................................................... 5.6.7 PARTS CLEANING AND INSPECTION ............................................... 5.7 PUMP REASSEMBLY........................................................................... 5.8 Preparation for Reassembly ........................................................... 5.8.1 Rotating Element Reassembly ....................................................... 5.8.2 Pump Case Reassembly ................................................................ 5.8.3 Shaft Setting Check ........................................................................ 5.8.4 Shaft Seal Installation ..................................................................... 5.8.5 Thrust Bearing and Housing Installation ........................................ 5.8.6 Radial Bearing and Housing Installation ........................................ 5.8.7 FINAL ASSEMBLY ................................................................................ 5.9 SECTION SIX SPARE PARTS RECOMMENDED ................................................................................. 6.1 ORDERING ........................................................................................... 6.2 STORAGE ............................................................................................ 6.3 SECTION SEVEN REFERENCE MATERIALS REFERENCE MATERIALS................................................................... 7.1 This material is the property of BW/IP International Inc., Pump Division, and is furnished only for the purpose indicated, any and all confidential, proprietary, patent and other rights, in the subject matter being retained including any exclusive rights of use and/or manufacture and/or sale. Possession of this material does not convey any permission to reproduce this material, in whole or in part, or manufacture the subject matter shown therein, or use the confidential or proprietary information thereon. Such permission to be granted only by specific authorization in writing signed by an officer or other authorized agent of BW/IP International Inc., Pump Division.

Rev. A BW/IP International Inc., Pump Division 1-MULT-02

1-1

SECTION ONE - PUMP DESIGN DATA 1.1 DESIGN DATA Pump Size & Type...................................................................______________________________ Serial Number..........................................................................______________________________ Service.....................................................................................______________________________ Rotation (as viewed from coupling end)..................................______________________________ Pumped Product......................................................................______________________________ Temperature ............................................................................______________________________ Specific Gravity at P.T. ............................................................______________________________ Design Capacity ......................................................................______________________________ Minimum Flow Capacity ..........................................................______________________________ Head ........................................................................................______________________________ NPSH Available .......................................................................______________________________ NPSH Required.......................................................................______________________________ Pump Speed............................................................................______________________________ Brake Horsepower...................................................................______________________________ Efficiency .................................................................................______________________________ Rotating Element Balance Requirements...............................______________________________ Running Clearances................................................................______________________________ Case Wear Ring and Stage Piece - Series ................______________________________ Stage Piece - Center & Balance .................................______________________________ Packing (Mfg. name, size, no. of rings, etc)............................______________________________ Mechanical Seal (Mfg. name, size type of seal) .....................______________________________ Throttle Bushing ......................................................................______________________________ Temperature controlled ( ) yes ( ) no Pressure controlled ( ) yes ( ) no Not controlled ( ) yes ( ) no *Shaft End Play Setting ......................................................______________________________


1-2

Lubricating Oil (P.E. to select correct oil type) ........................______________________________

____Pivot Shoe: (Medium Turbine Oil, 150 SSU at 100oF (37.8oC), Non Detergent, Non Foaming) ____All others: (Neutral Mineral Oil, 150 - 231 SSU at 100oF (37.8oC), SAE 10 or AGMA #1)

Lubrication Method..................................................................______________________________ Oil ring ( ) yes ( ) no Oil mist pure ( ) yes ( ) no Oil mist purge ( ) yes ( ) no Pressurized lube system ( ) yes ( ) no

* This measurement is used when performing "Checking Shaft Setting and End Play Procedure" in Section Seven of this manual.


2-1

SECTION TWO - DESCRIPTION 2.1 PUMP The centrifugal pump is a horizontally mounted, multi-stage pump with sleeve radial

bearings and a pivot shoe thrust bearing. It consists of the horizontally split pump case, the rotating element assembly, the shaft seals, and the bearing housings. The pump is pedestal mounted on a baseplate.

For descriptions of other components supplied by BW/IP International Inc., Pump Division, refer to pump outline drawing and other manufacturers material in Section Seven.

NOTE Refer to pump sectional drawing and mechanical seal drawing in Section Seven for

location of parts described in manual text. 2.1.1 Case The split pump case is a double volute design with the joints of the halves sealed by a

gasket and secured by studs and cap nuts. The suction and discharge nozzles, and bearing housing brackets, are integral with the case bottom half. This permits removing the top half case and the rotating element without disturbing the main piping.

2.1.2 Rotating Element NOTE All of the component parts for the rotating element described below may not be found in

the purchased pump. See the Pump Sectional Drawing, Section Seven for parts applicability.

The rotating element assembly consists of the pump shaft, the impellers and their wear rings (when furnished), the case wear rings, shaft sleeves, stage pieces and throat and throttle bushings. The key driven impellers and shaft sleeves are installed on the pump shaft with a shrink fit and positioned by split rings.

The case wear rings and stage pieces are positioned by tongue and groove fit with both halves of the case, each of their tongues having an anti-rotation pin that engages a slot in the bottom half case at the parting line.

2.1.3 Bearings and Housings The horizontally split bearing housings contain the radial and thrust bearings. The radial

bearings in both bearing housings are split sleeve type and the thrust bearing is a pivot shoe and thrust disc design. A locating pin in the top half of each housing prevents rotation of the sleeve bearings. Leakage of oil from the bearing housing is prevented by shaft mounted deflectors.

The pivot shoe and thrust disc type thrust bearing assembly consists of the shaft mounted thrust disc and two stationary sets of housing rings with leveling plates, rocker plates and pivot shoe assemblies, one set located on each side of the thrust disc. (continued

Housing rings support the pivot shoe assemblies in a plane which will align itself to the plane of rotation of the thrust disc, enabling the thrust bearing to compensate for thrust loads in either axial direction. The key-driven thrust disc is retained by the oil pump drive


2-2

or lock nut and is located by the shaft locating ring that is installed against a shoulder of the pump shaft.

Distribution of lubricating oil is provided to each bearing by a pressure lubrication system. 2.1.4 Shaft Seals Sealing of the pump shaft where it exits each end of the pump case is accomplished by the

use of a shaft sealing device. For a description and operation of the sealing device, see Section Seven.

Rev. B BW/IP International Inc., Pump Division 3-MULT-10

3-1

SECTION THREE - INSTALLATION 3.1 GENERAL Installation of the pump is performed in the sequence described in paragraphs 3.5 through

3.10. Final alignment (paragraph 3.9) and dowelling (paragraph 3.12) are performed after the pump has operated for at least twenty-four hours.

3.2 SHIPMENT CONFIGURATION The pump is shipped to the job site assembled, and may be either mounted on its

baseplate or shipped separately. If shipped separately, the pump will be suitably wrapped and mounted on skids or crated with all openings closed off and protected. Some small items may be packaged in separate containers.

3.3 EQUIPMENT REQUIRED In addition to common tools used in this type of work, the following should be available at

the job site when installing or removing the pump:

Lifting equipment of sufficient capacity to handle the equipment safely (see Section Five, paragraph 5.4). The approximate weight of the pump and other equipment supplied is normally given on the Pump Outline Drawing, Section Seven.

Steel blocks and wedges (one each per foundation bolt) of 2" (50.8 mm) minimum thickness, for leveling baseplate. Blocks and wedges should be free of burrs. Shim packs may substitute for the wedges.

Grouting materials, such as non-shrink grout, sufficient lumber for building a wooden trough to contain grout, and risers or funnels for guiding grout, normally provided by grouting contractor. A good oil paint is recommended for grout protective coating.

One dial indicator and a suitably stiff bracket having an arm of sufficient length to extend from the driver coupling hub to the pump coupling hub for performing coupling alignment.

3.4 HANDLING PRECAUTIONS When handling the pump or its components, always work safely to prevent accidents. The

unit can be handled and installed using equipment normally found at the job site; no special tools are required. Be sure lifting devices used are in good condition and are capable of safely carrying the weights being lifted. Observe the following precautions:

When handling the unit as shipped, use lifting lugs provided on each corner of

baseplate or, as an alternate method, use chains or slings passed under the baseplate. Crated assemblies may be handled with a forklift of suitable capacity.

When lifting the pump or driver separately, use lifting lugs when provided; otherwise, use padded slings around the pump or driver outer case. DO NOT

(continued)

use eye bolts on top of pump or bearing housing for lifting the assembled pump. DO NOT place lifting slings around bearing housings or shafts.


3-2

Adjust lifting equipment so that the load is balanced and supported adequately, and watch for overhead obstructions. Use care to prevent bumping, pushing or scraping of pump parts, especially the shafts and other machined surfaces and fits.

Take care to prevent foreign materials or dirt from entering the working parts of the pump or driver.

3.5 UNLOADING AND CHECKING 1. Before handling equipment, review the procedures of paragraph 3.4. Work safely

to prevent accidents.

2. After unloading, uncrate and unwrap all parts and inspect carefully to be certain nothing was damaged during shipment. Check driver carefully to be certain there are no signs of oil leakage.

3. Check shipment against packing list or manifest for possible shortages.

4. If damage or shortage has occurred, immediately advise the carrier's claim department and the nearest BW/IP International, Inc., Pump Division office or the dealer through whom the unit was purchased.

5. If pump or auxiliary equipment is to be stored for short or long term (over 6 months) periods, refer to paragraph 3.13 for procedures used in preparing equipment for shipment or site storage.

3.6 FOUNDATION PREPARATION 1. Choose a solid ground location for foundation.

2. Build foundation approximately three inches larger overall than the pump baseplate, to provide ample anchorage for the foundation bolts. The foundation should be at least several times the mass (weight) of pump, baseplate and driver. The final mass (weight) of the foundation must be determined by the customer.

3. Locate foundation bolts accurately, according to the Pump Outline Drawing, Section Seven.

4. Choose foundation bolts of specified size. Provide pipe enclosures for the foundation bolts three or four diameters larger than the bolts and stuff waste around bolts while pouring the concrete.

5. Leave top foundation surface rough, to provide a good base for grout.

6. Allow foundation to cure before installing equipment. 3.7 BASEPLATE LEVELING AND GROUTING (See Figure 3-1) 1. Place the steel blocks and wedges (or shim packs) as closely as possible to the

foundation bolts.

2. Disconnect all piping and wiring as required, and strip baseplate of pump and

driver.

3. Attach chain fall hooks at each corner of baseplate. Lift and guide baseplate to center above foundation bolts, then lower onto bolts.

Rev. B BW/IP International Inc., Pump Division 3-MULT-10 4. Using a precision level across baseplate pads at A-B, C-D, E-F and G-H, adjust

wedges (or shim packs) as necessary to insure that baseplate is level in all directions to within the recommended tolerance of 0.002 inch (0.0508 mm) per linear foot. Wedges or shim packs should feel solid when tapped lightly with a hammer.

5. When baseplate is level and held firmly with foundation bolt nuts, it is ready for grouting.

6. To contain grout, provide wooden trough about 2-1/2 inches (63.5 mm) deep around outside of baseplate. Also provide riser or funnels over grout holes to insure correct placement of grout.

7. Stir or vibrate the grout while pouring grout into all open spaces. Tap baseplate to eliminate air pockets.

8. Allow grout to settle, then dress surplus grout on outside of baseplate.

9. When grout is thoroughly hardened, remove wedges, fill the wedge holes with grout, and completely tighten the foundation bolts.

10. Apply oil paint to protect grout from moisture.

11. Observing the precautions of paragraph 3.4, reinstall the pump and driver. Position them on the baseplate with their shafts located to the "between shafts" dimension as shown on Pump Outline Drawing, Section Seven. With a plumb line or other suitable means, establish approximate alignment of shaft centerlines.

FIGURE 3-1. BASEPLATE LEVELING 12. Install and temporarily tighten the cap screws securing equipment to baseplate, but

do not tighten driver cap screws until required during coupling alignment, paragraph 3.9.

13. Reconnect all piping and wiring disconnected in Step 2. Connect required auxiliary

equipment as applicable.

14. Check driver for correct rotation by momentarily operating it as per manufacturer's instructions, (Section Seven). Correct as required. Also check for proper magnetic alignment of driver shaft.

3-3

Rev. B BW/IP International Inc., Pump Division 3-MULT-10 3.8 BEARING HOUSINGS CLEANING AND LUBRICATION The inside of the bearing housing is cleaned and sprayed with rust inhibitor before the

pump is shipped. However dirt or moisture may have entered the housing during shipment, storage, or installation. If it is suspected that bearings have been exposed to dirt or moisture, disassemble and thoroughly clean the bearing housing with a solvent and air dry the parts. When clean, coat machined and unpainted inside surfaces of housing and parts above the oil level with a thin layer of petrolatum and reassemble the bearing housing.

3.9 DRIVE COUPLING INSTALLATION AND ALIGNMENT Pump-to-driver alignment assures that the pump and driver shaft centerlines are parallel

and in line with each other. The alignment consists of angular and offset alignment procedure. Refer to coupling manufacturers instructions, Section Seven and Figures 3-2 and 3-3 to account for initial offset for pumps operating above 250oF (121oC). The alignment should be checked at least the following three times.

Preliminary: With the foundation bolts securely tightened and doweling installed, but

before final tightening of pump-to-pedestal bolts.

Secondary: With the pump and driver bolted to final tightness, coupling spacer installed, and the main and auxiliary piping connected (paragraphs 3-10 and 3-11).

Final: This hot alignment check is performed after the pump has operated for at least twenty-four hours and is still at operating temperature and pressure.

After completing final alignment, recheck the tightness of the pump and driver anchor bolts.

FIGURE 3-2. COUPLING ALIGNMENT Angular Alignment 1. Fasten or clamp a dial indicator to one hub with indicator stem contacting face of

the opposite hub, location (A).

2. Rotate one shaft and take indicator readings at a minimum of four places 90o apart. Shim under driver feet as necessary to attain parallel hub faces with 0.001 to 0.002 inch (.025 mm to .050 mm) total indicator reading (T.I.R.)

Offset Alignment

3-4


3-5

1. Fasten or clamp a dial indicator to one hub with indicator stem contacting circumference of the opposite hub, location (B).

2. Rotate one shaft and take indicator readings at a minimum of four places 90o apart. Shim under driver feet as necessary to attain parallel alignment of shaft centerlines within 0.002 to 0.004 inch (0.050 mm to .10 mm) T.I.R.

3. Repeat step 1 with indicator clamped to the opposite hub. After establishing the offset alignment, recheck that angular alignment has not changed

and that pump and driver anchor bolts are secure. 3.10 MAIN PIPING CONNECTION With the pump baseplate grouted and firmly fastened to the foundation and with pump and

driver installed, the main piping should then be connected to the pump proper. Piping-to-pump flange faces must mate flush and parallel without use of excessive force. The piping forces supported by the pump must not displace the pump out of alignment. DO NOT use drifts or flange bolts to force alignment of piping. Provide piping supports close to the pump flanges to avoid vibration and strain on pump casing. To prevent possible damage, be certain that piping and suction and discharge cavities are thoroughly clean before connecting pump to piping.

Observe the following: Use pipe of ample size for the length of line and the pressures involved. Allow

absolute minimum of bends and fittings. Suction piping should be as short and direct as possible, never smaller in diameter

than the suction entrance to the pump. Where a long suction pipe is necessary, its diameter should be at least one size, preferable two, larger than the pump suction port. Any bends or elbows used in suction piping should be of a long radius type.

DO NOT use a straight tapered reducer on a horizontal suction line (use offset reducer with offset down).

Install check valve, followed by gate valve, in discharge line. Check valve prevents back flow in event of power failure, and protects pump from excessive pressure.

Reducer, if used in discharge line, should be fitted to discharge flange preceding check valve and gate valve.

Provide strainers or screens where required to prevent entry of solids into the pump. Strainers or screens, if used, must not deprive the pump of adequate intake flow.


EXAMPLE: Pump

Water Temperature = 315° to 345° (use 330°) Ambient Temperature = 80° Temperature Increase = 330° – 80° = 250° Pedestal Height = 32” From Expansion Chart: Pump Rise = .0119 (use .012)

Fluid Drive or Gear

Operating Temperature = 135° Temperature Increase = 135° – 80° = 55° Height = 31” From Expansion Chart: Fluid Drive or Gear Rise = .0102 (use .010)

Motor

Operating Temperature = 100° Temperature Increase = 20° Height = 24” From Expansion Chart: Motor Rise = .0028 (use .003)

Set Fluid Drive .002 above Pump Set Motor .007 above Fluid Drive

3-6

Rev. B BW/IP International Inc., Pump Division 3-MULT-10 FIGURE 3-3. ALIGNMENT OF SHAFT CENTERLINE HEIGHTS

3-7


3-8

FIGURE 3-4 EQUIPMENT EXPANSION CHART NOTE Use of gages or other measuring devices are recommended to monitor the

pressure drop across each strainer or screen that may be used. Strainers and screens must be removed and cleaned when the pressure drop increases, indicating a flow restriction.

3.11 AUXILIARY EQUIPMENT CONNECTION Install and connect required auxiliary instruments, wiring and piping as shown on the Pump

Outline Drawing in Section Seven. 3.12 DOWELING Doweling of the pump and driver prevents movement, simplifies realignment if alignment is

disturbed, and temporarily holds unit should mounting bolts loosen. It is performed after the final alignment check of paragraph 3.9. Dowel pump and driver as follows:

1. Using the existing pilot holes in the feet of the pump, drill new pilot holes into the mounting pedestals to a minimum depth of 1-1/2 times the diameter of the dowel pin. The drilled holes should be of a diameter 1/64 inch (.40 mm) less than the diameter of the dowel pins to be installed. Clean out the chips.

2. Ream the holes in the feet and mounting pedestal to the proper diameter for the dowel pins which should be a slight interference fit. Clean out chips and insert dowel pins.

3. Install nuts on dowel pin threads. The nuts are provided to remove the dowel pins when required.

4. Dowel the driver in accordance with driver manufacturers instructions. 3.13 Site Storage Upon equipment arrival at the jobsite, the contractor or user must take over its handling

and storage and such tasks as rotating shafts and adding desiccants (for long-term storage), and preparing for customer's final in-plant painting.

If pump or auxiliary equipment is to be stored temporarily prior to installation, replace any protective covers or wrappings removed during inspection and recrate the equipment. Store equipment in a dry and protected indoor location, keeping it free of dirt and grit both internally and externally.

Keep protective piping covers tight and renew if damaged. Do not remove them until the pump is to be connected to the system piping. Shafts, bearings, and other finished parts subject to attack by moisture should be inspected occasionally, and the protective coating renewed if necessary.

During storage, once a month, rotate the pump shaft a minimum of two and a half revolutions in the direction indicated on the nameplate. Position the shaft 180o from its previous resting position.

For long term storage periods (over six months), contact your nearest BW/IP International Inc. sales office for additional requirements.


4-1

SECTION FOUR - OPERATION This section list precautions and checks that must be observed when operating the pump. The procedure for starting and stopping the pump must be developed by the customer since valving and piping to and from the pump may vary among customers. 4.1 OPERATING PRECAUTIONS CAUTION OPERATE THE PUMP ONLY WITHIN THE DESIGN PARAMETERS SPECIFIED

IN SECTION ONE, DESIGN DATA AND THE PERFORMANCE TEST CURVE, SECTION SEVEN.

DO NOT OPERATE THE PUMP BELOW THE MINIMUM FLOW RATE AS INSUFFICIENT FLOW WILL LEAD TO PUMP OVERHEATING AND GREATLY REDUCED PUMP LIFE.

DO NOT ALLOW PUMP TO RUN DRY, AS POSSIBLE DAMAGE TO THE UNIT MAY OCCUR.

DO NOT ALLOW PUMP TO OPERATE BELOW NPSH REQUIRED AS SPECIFIED IN SECTION ONE, DESIGN DATA, AS POSSIBLE DAMAGE TO THE UNIT MAY OCCUR.

PUMPED LIQUID MUST BE FREE OF EXCESSIVE AIR OR GAS. THE PRESENCE OF EXCESSIVE AIR OR GAS IN THE LIQUID WILL RESULT IN A REDUCTION IN CAPACITY AND HEAD WHICH CANNOT BE PREDICTED WITH ACCURACY, AND MAY LEAD TO EXCESSIVE WEAR OR DAMAGE OF THE UNIT.

BW/IP INTERNATIONAL, INC., PUMP DIVISION MAKES NO GUARANTEE AGAINST THE EROSIVE ACTION OF SAND OR ABRASIVE MATERIAL IN PUMPED LIQUID. SMALL AMOUNTS OF ABRASIVES WILL PASS THROUGH THE UNIT WITH SLIGHT IMMEDIATE EFFECT, BUT IT IS ONLY A QUESTION OF TIME UNTIL OPERATION UNDER THIS CONDITION WILL DAMAGE THE WORKING PARTS OF THE PUMP.

4.2 PRELIMINARY CHECK 1. Check that oil pump drive/thrust bearing nut has been tightened and locked by lock

washer.

2. Before starting the pumping operation, check the security of all bolting, piping and wiring.

3. Check all gages, valves and instruments for proper working order.

4. Check that the pump warm-up line is operational to preheat pump.

5. Check that the mechanical seal cartridge assembly is properly locked in position and that the setting/spacer plates are removed before starting the unit.

CAUTION


4-2

IN AN EMERGENCY, PUMPS MAY BE COLD (AMBIENT TEMPERATURE) STARTED. BW/IP RECOMMENDS HOWEVER, THAT AN IDLE PUMP BE KEPT AT OPERATING TEMPERATURE BY THE INJECTION OF FLUID THROUGH THE WARMING LINE ORIFICE. THIS FLUID SHOULD BE AT THE OPERATING TEMPERATURE OF THE PUMP.

IF THE PUMP IS COLD AND AN EMERGENCY CONDITION DOES NOT EXIST, THE PUMP SHOULD BE GRADUALLY WARMED TO OPERATING TEMPERATURE AT THE RATE OF 50oF (10oC) PER HOUR PRIOR TO START UP.

NOTE After one week of operation and with the pump at operating temperature and pressure,

perform a hot alignment check. 4.3 OPERATING CHECK As soon as possible after the pumping operation begins, repeat the applicable portions of

the checking procedure of paragraph 4.2, be certain that all gages and instruments indicate as specified. Other than monitoring of flows, pressures, temperatures and lubrication, the pump should require no attention during operation. In the event symptoms of trouble occur, stop the pump and refer to the Trouble-Shooting Chart and Maintenance Procedures of Section Five.

Rev.A BW/IP International Inc., Pump Division 5-MULT-14

5-1

SECTION FIVE - MAINTENANCE 5.1 GENERAL Routine performance of preventive maintenance tasks will enable early detection of most

problems that may arise. Periodic dismantling of the pump for inspection is not necessary unless there is reason to suspect excessive wear or other internal damage. If a pump malfunction is suspected, refer to Trouble-Shooting, paragraph 5.3. When major maintenance is undertaken, refer to the procedures of paragraph 5.7 for pump disassembly operations and paragraph 5.9 for pump reassembly operations.

5.2 PREVENTIVE MAINTENANCE Monitoring of pump performance is recommended to establish the maintenance

requirements for the pumps particular application. The following items should be checked on a regular basis:

Integrity of the base plate and pump and driver mounting fasteners - tighten as

necessary

All piping for evidence of leakage due to loosening or damage - repair as necessary

Instrumentation and wiring for possible damage - replace or repair as necessary

Changing Lubricating Oil - Drain and refill the lubricating oil for the pump bearings approximately every six months. Ordinarily, oil replenishment is not required between changes. The recommended lubricant is specified in Section One - Design Data.


5-2

5.3 TROUBLE-SHOOTING The following chart lists most of the troubles that can be encountered during pump operation, their possible causes, and recommended remedies: TROUBLE PROBABLE CAUSE REMEDY Hot Bearings a. Inadequate oil flow

b. Contaminated oil c. Defective Bearings

a. Verify oil flow b. Drain and clean oil reser-

voir, refill with clean oil c. Repair or replace

Excessive Leakage Around Shaft

a. Worn sealing device b. Excessive injection

pressure

a. Replace sealing device b. Reduce injection pressure

Reduced Flow or Low Discharge Pressure

a. Air leaks in Suction b. Speed too low c. NPSH too low d. Clogged suction line e. Clogged impeller(s) f. Impeller(s) damaged g. Wrong rotation

a. Check suction line for leaks

b. Check driver speed c. Check suction side of

system for flow restrictions, air leaks

d. Clean out suction line strainer

e. Clean out impeller(s) f. Replace impeller(s) g. Check driver rotation

No Flow a. Pump not primed b. Speed too low c. Plugged impeller(s) d. Clogged suction strainer e. Damaged impeller(s)

a. Prime Pump b. Check driver speed c. Clean out impeller(s) d. Clean out strainer e. Replace impeller(s)

Pump Vibration Excessive a. Clogged impeller(s) b. Damaged impeller(s) c. Misalignment

a. Clean out impeller(s) b. Replace impeller(s) c. Check driver-to-pump

alignment

5.4. SITE EQUIPMENT REQUIRED (CUSTOMER SUPPLIED) NOTE In addition to common millwright tools used in this type of work, the following

equipment should be available at the job site when disassembling or assembling the pump:

A hoist, crane, or derrick - strong enough to handle the load to be lifted.

Spreader bar and shackles (clevis-and-pin type adapters) - suitably sized for attaching lifting lines to equipment lifting lugs.

Lifting eyebolts, padded or nylon slings - for handling the equipment when lifting

lugs are not provided.


5-3

Dow Corning DC-55M silicone grease or equivalent - for lubricating O-rings.

Dow Corning "Molykote" G paste or equivalent - for lubricating rotating element components.

5.5 HANDLING INSTRUCTIONS NOTE The approximate weight of the pump and driver are shown on the Pump Outline

Drawing, Section Seven. 5.5.1 Handling Precautions WARNING DO NOT WORK OR STAND UNDER A HEAVY SUSPENDED OBJECT UNLESS

THERE IS A POSITIVE SUPPORT UNDER IT TO PROTECT PERSONNEL SHOULD A HOIST OR SLING FAIL.

When handling the pump or its components, always work carefully to prevent

accidents.

Be sure lifting devices (paragraph 5.4) are in good condition and capable of safely handling the weights being lifted.

Adjust lifting equipment so that the load hook is directly over the equipment center of gravity. Watch for overhead obstructions.

Use care to prevent bumping, pushing or scraping of pump parts, especially the shaft and other machined surfaces and fits.

Prevent foreign materials or dirt from entering the working parts of the pump or its driver.

Note that the driver lifting points are designed for lifting the driver only. 5.5.2 Lifting Method Baseplate with or without equipment installed - Use lifting lugs provided on each corner of

baseplate or, as an alternate method, use chains or slings passed under the baseplate. Pump assembled - Use lifting holes provided in webs of top case. Pump bearing housing - Use eyebolt installed into one of the vent holes. Pump case, top half - Use lifting holes provided in webs of top case. Rotating element assembly - Use nylon slings at each end of the shaft. Driver - Handle driver in accordance with manufacturer's instructions. 5.6 PUMP DISASSEMBLY WARNING OBSERVE THE HANDLING INSTRUCTIONS OF PARAGRAPH 5.5 WHEN

DISASSEMBLING THE PUMP.


5-4

NOTE Refer to pump sectional drawing, Section Seven, for location of parts described in

disassembly. 5.6.1 Preparation For Disassembly 1. Before removing a component, be certain of the following: Driver is stopped with controls locked open and tagged. Driver lead wires are disconnected and tagged. Pump discharge and suction line shutoff valves are closed and tagged. 2. Drain the pump of all liquid. 3. Drain the bearing housings of all lubricating oil. 4. Disconnect and remove the following components, as applicable, if the pump is so

equipped: Seal injection and drain lines. Bearing housing constant level oilers. Vibration and temperature monitoring devices and other instrumentation. Any pump secondary piping (drain lines, etc). 5.6.2 Coupling Removal NOTE If the same coupling is to be reinstalled, matchmark spacer to hubs and hubs to

driver and pump shafts. Note arrangement and location of all components removed for reinstallation in same location.

1. Remove coupling guard, then disconnect and remove spacer from coupling. 2. Scribe a reference mark on the pump shaft for locating hub at reinstallation. 3. Remove two set screws from face of pump coupling nut. 4. Remove coupling nut from pump shaft. 5. The pump coupling hub and shaft are a tapered fit. With a puller and broad flame

torch, heat the hub evenly and then remove it from shaft. Remove coupling key from shaft.


5-5

5.6.3 Thrust Bearing and Housing Removal 1. Remove the cap screws securing IMO oil pump to oil pump bracket. 2. Remove oil pump, coupling and keys. 3. Remove the cap screws securing the oil pump bracket to thrust bearing housing.

Remove bracket and gasket. Discard gasket. 4. Loosen the set screws securing the inboard deflector to pump shaft and slide the

deflector away from the bearing housing. 5. Remove the dowel pins and cap screws securing the top half of bearing housing to

the bottom half. 6. With suitable lifting equipment remove the top half of the bearing housing. 7. Remove outboard oil seal. 8. Remove pivot shoe bearing assemblies, six on each side of thrust disc, by rotating

housing ring and removing each bearing assembly as it appears in view. Tag and store each item as it is removed and be certain to keep it in the same group of six.

9. Remove both inner and outer housing ring assemblies each with attached six

leveling plates and six rocker plates. Store with pivot shoe assemblies in tagged sets.

10. Use special tool supplied with pump to remove oil pump drive after first removing

tabs of lock sleeve as described in 1T-5507, Section Seven. 11. Place a block of wood against the inboard side of the thrust disc and tap the block

lightly to free the thrust disc. Remove the disc and key. 12. Remove shaft locating ring from pump shaft. 13. Remove inner oil seal from pump shaft. 14. Remove the top half of sleeve bearing. 15. Remove the bottom half of sleeve bearing by revolving it around the pump shaft

while supporting the shaft to relieve its weight and provide clearance. 16. With suitable lifting equipment supporting the bottom half bearing housing, remove

dowel pins and cap screws securing the housing half to the pump case, and remove the housing.

17. Slide inboard deflector off pump shaft.


5-5

5.6.3 Thrust Bearing and Housing Removal 1. Remove the cap screws securing IMO oil pump to oil pump bracket.

2. Remove oil pump, coupling and keys.

3. Remove the cap screws securing the oil pump bracket to thrust bearing housing. Remove bracket and its attached shim pack and oil seal, and also remove the bracket-to-housing gasket. Discard gasket.

4. Loosen the set screw (optional) securing the inboard deflector to the pump shaft and slide the deflector away from the bearing housing.

5. Remove the dowel pins and cap screws securing the top half of bearing housing to the bottom half and to pump case.

6. With suitable lifting equipment remove the top half of the bearing housing.

7. Remove pivot shoe bearing assemblies, six on each side of thrust disc, by rotating housing ring and removing each bearing assembly as it appears in view. Tag and store each item as it is removed and be certain to keep it in the same group of six.

8. Remove both inner and outer housing ring assemblies each with attached six leveling plates and six rocker plates. Store with pivot shoe assemblies in tagged sets.

9. Using a chisel, straighten the tabs of lock washer securing lock nut to pump shaft. Remove lock nut.

10. Place a block of wood against the inboard side of the thrust disc and tap the block lightly to free the thrust disc. Remove the disc and key.

11. Remove shaft locating ring from pump shaft.

12. Remove inner oil seal from pump shaft.

13. Remove the top half of sleeve bearing.

14. Slide the oil ring on the pump shaft away from bottom half sleeve bearing.

15. Remove the bottom half of sleeve bearing by revolving it around the pump shaft while supporting the shaft to relieve its weight and provide clearance.

16. With suitable lifting equipment supporting the bottom half bearing housing, remove the dowel pins and cap screws securing the housing half to the pump case and remove the housing.

17. Remove the inboard deflector and the oil ring from the pump shaft. Remove and discard deflector O-ring.


5-6

5.6.4 Radial Bearing and Housing Removal 1. Loosen the set screws (optional) securing the outboard and inboard deflectors to

the pump shaft. Slide the inboard deflector away from radial bearing housing and slide the outboard deflector off the pump shaft. Remove and discard outboard deflectors O-ring.

2. Remove the dowel pins and cap screws securing the top half of bearing housing to

the bottom half. 3. With suitable lifting equipment remove the top half of bearing housing. 4. Remove the top half of sleeve bearing and slide the oil ring on the pump shaft

away from bottom half sleeve bearing. 5. Remove the bottom half of sleeve bearing by revolving it around the pump shaft

while supporting the shaft to relieve weight and provide clearance. 6. With suitable lifting equipment supporting the bottom bearing housing, remove the

dowel pins and caps screws securing the housing half to the pump case and remove the housing.

7. Slide inboard deflector and oil ring off pump shaft. Remove and discard deflectors

O-ring.


5-7

5.6.5 Shaft Seal Removal 1. Starting at either end of the pump and referencing the mechanical seal drawing in

Section Seven, check to make sure the setting/spacer plate is reinstalled so the gland plate assembly and shaft sleeve is locked as a cartridge assembly.

2. Loosen the set screws securing the seal sleeve to the pump shaft. 3. Remove heavy hex nuts and washers securing mechanical seal cartridge to

stuffing box. 4. Remove the cartridge from pump shaft and protectively wrap cartridge. 5. Remove the mechanical seal from the other end of the pump following the above

procedure.


5-8

5.6.6. Pump Case Disassembly 1. Remove the cap nuts from case studs.

2. Use back-off screws in the taps provided to break the gasket joint of the case top half to the case bottom.

CAUTION PROTECT THE CASE-TO-GASKET MATING SURFACE. SCRATCHING OR

SCORING OF THE MATING SURFACE MAY CAUSE LEAKAGE DURING PUMP OPERATION.

3. Using suitable lifting equipment, remove the case top half case and place it

carefully aside on a clean surface.

4. Rotate the split center and solid stage pieces one-quarter turn so that their anti-rotation pin is in the vertical position. Remove the top half of the center stage piece.

5. Remove the rotating element from the bottom half of case and place on V-blocks or other suitable supports.

6. Remove the bottom half of the center stage piece from case bottom half pump case.

7. Remove the following loose components from rotating element:

Throat and throttle bushings from shaft. Balance sleeve stage piece from its fit on balance sleeve. Case wear ring from its fit on each end impeller. 5.6.7 Rotating Element Disassembly The impellers and sleeves are installed on the pump shaft with a shrink fit. Impeller and

sleeve movement on the shaft is prevented by their respective keys and split rings. To facilitate removal and installation of the parts from the shaft, the shaft is machined in steps so that the largest diameter fit is at the center with decreasing diameter fits towards each end.

WARNING WEAR HEAT RESISTANT GLOVES WHEN HANDLING HEATED SLEEVES AND

IMPELLERS. CAUTION USE A NEUTRAL ACETYLENE OR MAP TORCH WITH A BROAD FLAME AND

ROTATE THE HEAT FOR EVEN DISTRIBUTION. KEEP THE FLAME AWAY FROM PUMP SHAFT WITH A PIPE SLEEVE OR DAMP CLOTH.

THE USE OF "TEMPIL-STICK" (CONTROLLED MELTING POINT MATERIAL, PRODUCT OF TEMPIL MFG. CO.) OR EQUAL PRODUCT IS RECOMMENDED TO OBTAIN PROPER TEMPERATURE OF 400oF (204.4oC).


5-9

SHOULD AN IMPELLER OR SLEEVE BIND ON THE SHAFT DURING REMOVAL, COOL IT AND THE SHAFT WITH AN AIR BLAST, FOLLOWED BY A COMPLETE COOLING WITH CLEAR WATER. REHEAT AND TRY REMOVAL AGAIN. AVOID FORCING THE COMPONENT OFF THE SHAFT.

5.6.7.1 Sleeve Removal 1. Using a neutral acetylene or map torch, heat the sleeve to approximately 400oF.

2. Lightly tap sleeve with a babbitt hammer to help break sleeve loose. Push sleeve inboard on shaft until split ring halves are exposed.

3. Quickly remove the split ring halves and pull the sleeve off the shaft. Remove key from the keyway.

5.6.7.2 Impeller Removal NOTE Before heating an impeller, remove both the case wear ring and the stage piece

from their fits on the impeller and place them on the pump shaft.

Using a neutral acetylene or map torch, heat the impeller to approximately 400oF (204.4oC) around the outside, from the outer diameter to the running fit. Rotate the torch for even heat distribution. Heat the impeller for approximately 1 to 1-1/2 minutes on each side. After heating the outside of the impeller, apply heat to the hub and inside of the suction eye last (avoid applying heat to the shaft). Use a babbitted hammer to help break the impeller loose. Quickly pull the impeller towards the center of the shaft to expose split ring halves. Then quickly remove the halves and pull the impeller off the shaft. Remove the impeller key and the hub stage piece from pump shaft.

5.6.7.3 Impeller Wear Ring Removal and Replacement (If Applicable) NOTE Each wear ring is attached to its impeller by three set screws that are

staked in place. It will be necessary to grind away metal from the stake that will interfere with the removal of the set screws.

1. Remove the socket set screws used to secure wear ring to impeller.

2. Using a diamond pointed chipping tool, segment the wear ring in three places and remove wear ring segments.

3. Remove any burrs from the impeller wear ring area.

4. Install replacement wear ring on impeller.

5. Drill and tap new holes approximately 1-inch from location of previously drilled holes. Drill the holes to accept a tap of the same thread size as the set screws removed in step 1.

6. Secure wear ring with socket set screws and stake set screws. 5.7 PARTS CLEANING AND INSPECTION 1. Discard and provide replacement parts for all gaskets and O-rings removed during

disassembly.


5-10

2. Wash all parts thoroughly in acetone or other suitable solvent. Air dry the parts, or dry the parts with a clean, lint-free cloth.

3. Check all parts for wear, erosion, or corrosion. Discard and provide replacement parts for all parts worn, eroded or corroded to the extent which would damage pump operation.

4. Using a micrometer, determine that the faces of the shaft locating ring are ground parallel and perpendicular to the bore within 0.0005" (.0127 mm).

5. Determine that the pump shaft is free of dirt and burrs. Mount the shaft in a lathe (between centers, or on V-blocks, or on rollers (at bearing locations). Use a dial indicator to check the shaft for runout. Total indicator reading at any point must not exceed .002" (.0508 mm).

6. Check the diametrical running clearances of wear rings and bearings (See Section One -Design Data). The diametrical running clearances given are factory tolerances for a new or rebuilt pump.

7. For pumps with a pivot shoe bearing arrangement, check both the inner and outer set of thrust pads, check the button to face height of each pad. The maximum variance within a set shall be no more than 0.002" (0.0508 cm.)

8. For pumps with a pivot shoe bearing arrangement, determine that the thrust disc faces are true as follows:

a. Mount shaft locating ring, thrust disc key and thrust disc and thrust bearing nut on pump shaft and determine that the thrust disc is completely secured on shaft.

b. Mount shaft in a lathe and use a dial indicator to determine that both faces of the thrust disc are not more than .005" (.127 mm) out of true at the outside diameter.

d. Remove thrust disc from shaft for pump reassembly. 5.8 PUMP REASSEMBLY Thoroughly clean all parts and gasket seats before reassembly. Replace all gaskets with

new ones; never reuse old gaskets. Reassemble the pump as directed in the following paragraphs. For parts identification and location, refer to Pump Sectional Drawing, Section Seven.

WARNING OBSERVE THE HANDLING INSTRUCTIONS OF PARAGRAPH 5.5 WHEN

ASSEMBLING THE PUMP

NOTE Refer to pump sectional drawing, Section Seven, for location of parts described in

reasassembly. 5.8.1 Preparation for Reassembly 1. Select a clean work area.

2. Verify all parts have been thoroughly cleaned and inspected.

3. Provide new gaskets and O-rings.


5-11

4. Check keys for snug keyway fits on pump shaft and on impellers or sleeves.

5. Lay out all components of rotating element in the order in which they are to be assembled on the pump shaft.

5.8.2 Rotating Element Reassembly The impellers and sleeves must be heated to permit their installation on the shaft. Use an

oven, furnace, or a large gas plate, and be certain to turn each impeller over frequently. Heat the impellers and balance sleeve to approximately 400oF (204.4oC) so that their bore expands by 0.0005" (.0127 mm).

WARNING WEAR HEAT RESISTANT GLOVES WHEN HANDLING A HEATED COMPONENT. CAUTION SHOULD A SLEEVE OR AN IMPELLER BIND ON THE SHAFT DURING ITS

INSTALLATION, COOL THE COMPONENT AND SHAFT WITH AN AIR BLAST, FOLLOWED BY A COMPLETE COOLING WITH CLEAR WATER. AGAIN HEAT THE COMPONENT AND ATTEMPT INSTALLATION. DO NOT FORCE THE COMPONENT ONTO THE SHAFT.

NOTE 1 Install the impellers and sleeves on pump shaft using the following procedures, as

applicable. Before installing an impeller, place its respective hub side stage piece on the shaft so as not to interfere with the installation of the impeller. After installation of impeller, place its case wear ring on its fit on the eye side of the impeller (before next impeller installation).

NOTE 2 If the first-stage impeller is of a double suction design, install it so that its wear ring

diameter is properly oriented to load against the split ring or shaft shoulder when the pump is operating.

Starting with the proper center stage impeller proceed as follows until all components are installed:

1. Insert component key in its shaft keyway. 2. Lift and align component with its key, then slide it onto shaft just beyond the groove

for the split ring halves. 3. Quickly install split ring halves and move component back over against the halves. 4. Before component cools, twist it against the key in the opposite direction of pump

rotation so that it will fit snugly against the key. 5. Install case wear ring and stage piece on impeller. 6. Repeat the above steps to install the remaining impellers. 7. Balance the rotating element to the requirements given in Section One - Design

Data. 8. Complete the assembly of the rotating element by installing the remaining parts as

follows: a. Case wear ring on its fit on each end impeller


5-12

b. Balance stage piece on its fit on balance sleeve c. Throat and throttle bushings on pump shaft 5.8.3 Pump Case Reassembly

CAUTION EXERCISE EXTREME CARE IN HANDLING THE CASE HALVES IN ORDER NOT TO

DAMAGE THE MATING SURFACES. DAMAGING THESE SURFACES CAN CAUSE SERIOUS OPERATIONAL DIFFICULTIES.

5.8.3.1 Pump Case Gasket Fabrication and Installation 1. Clean both halves of pump case at the split joint. If dowel pins are installed,

remove them. 2. Remove the studs (if applicable) from the top half pump case. 3. Place a thin coat of non-hardening sealer (Permatex or equivalent) on the mating

surface of the top case half. This will prevent the gasket material from moving when forming the gasket.

4. Lay and clamp gasket in place on the top case.

5. Use a soft (lead) ball peen hammer and outline the interior contour of the case, stud and dowel pin holes. Cut out the outlined contour and holes.

6. Remove the gasket from the case top half and place on bottom half.

7. Place the case top half on the lower half and cut or peen the outside case contour. Leave approximately 1/4" (6.35 mm) gasket material protruding from case at stuffingbox faces. Gasket will be trimmed after final installation of half in following paragraph.

8. Remove top half case. 5.8.3.2 Rotating Element and Top Case Reinstallation 1. To ease installation, lubricate the outside diameter of all stage pieces and case

wear rings with a light coat of Dow Corning "Molykote" G paste or equivalent.

2. Install the bottom half of each split center and series stage piece in its groove in the bottom half case, as applicable.

3. Lift the rotating element and center it over the case bottom half. Before lowering it,

rotate all case wear rings and solid stage pieces so that the locating pin of each piece is towards the top of the rotating element.

4. Slowly lower the rotating element assembly into the bottom half case while fitting the tongues of the solid stage pieces, bushings, and case wear rings with their respective grooves in the bottom half case. Rotate the solid stage pieces and wear rings one-quarter turn to engage their locating pin with the corresponding counter sink hole in the lower half case.


5-13

5. Install the top half of each split center and series stage piece on it's bottom half and rotate it one-quarter turn to engage its locating pin with the corresponding countersink in the lower case.

6. If removed, install the case top half locating pins in the lower case.

7. Place the case top half on the bottom half and install the stud cap nuts. Tighten nuts to the torque value specified in Table 5-3.

8. Cut the excess gasket material extending over each end of the case flush with the case.

5.8.4 Shaft Settings Check If the bearing housings, rotating element or shaft locating/adjusting ring have been altered

or replaced, the radial and/or axial shaft settings should be checked in accordance with procedure listed in Section Seven, Reference Materials.


5-14

5.8.5 Shaft Seal Installation 1. Starting at either end of the pump and referencing the mechanical seal drawing in

Section Seven verify that all visible O-rings are installed prior to installing the mechanical seal.

2. Slide the seal cartridge onto pump shaft and into stuffing box. Secure the cartridge

by installing its flat washers and nuts. Tighten nuts to value given in Table 5-2. 3. Do not tighten the set screws that lock the cartridge to the pump shaft until the

pump is fully assembled. 4. Repeat the above procedure to install the seal cartridge on the other end of the

pump.

Rev. 0 BW/IP International Inc., Pump Division 5-MULT-55 5.8.6 Thrust Bearing and Housing Reinstallation 1. Install inboard deflector on pump shaft with groove facing outboard. 2. Lift, position and secure the bottom half of thrust bearing housing to pump case

with dowel pins and cap screws. Tighten cap screws to value specified in Table 5-1.

NOTE If a new sleeve bearing is being installed and if a temperature detector was used in

conjunction with the replaced sleeve bearing then the new bearing will have to be drilled as directed in 2T-6410 and 2T-6411, Section Seven.

3. Lift the pump shaft as necessary to provide clearance and roll bottom half of sleeve

bearing into bottom half of bearing housing. 4. Install top half of sleeve bearing on it's bottom half. 5. Install inner oil seal on pump shaft with slot aligned on dowel in bottom half of

thrust bearing housing. 6. Install shaft locating ring on shaft against machined shoulder of shaft. 7. Install thrust disc key in keyway on shaft and install thrust disc on key against

locating ring. 8. Install lock sleeve and oil pump drive following the instructions in 1T-5507 and 1B-

3945, Section Seven. 9. Install housing rings with attached leveling and rocker plates on each side of thrust

disc so leveling and rocker plates face the thrust disc. 10. Maintain shoe and ring relationship as tagged at disassembly and insert pivot shoe

assemblies into housing rings by rotating rings around shaft as necessary. 11. Rotate both sets of housing ring halves with shoes installed so the locating pin on

each ring set is located at the top. 12. Place the top half of thrust bearing housing and on bottom half housing and install

dowel pins and cap screws. Tighten cap screws to value specified in Table 5-1. 13. Slide inboard deflector on pump shaft against bearing housing, then back deflector

away from housing approximately 1/32 inch (.79 mm) and secure to pump shaft with set screws.

14. Install outboard oil seal on thrust bearing end cover.

5-

15. Position the oil pump bracket with a new gasket on thrust bearing housing and secure with cap screws. Tighten cap screws to value specified in Table 5-1.

15

Rev. 0 BW/IP International Inc., Pump Division 5-MULT-55 Reinstall the shaft driven oil pump as follows (See Figure 5-1.): a. Install key in keyway of oil pump drive. b. Align keyway of drive hub with key and install hub on shoulder of oil pump

drive. Tighten set screw on hub. c. Align cushion to fit drive hub and install cushion. d. Install key in keyway of IMO oil pump shaft. e. Align keyway on driven hub with key and install on IMO oil pump shaft.

Tighten set screw on hub. f. Align oil pump driven hub to fit cushion and install oil pump. Secure the oil

pump to the oil pump bracket by installing the hex head cap screws. Tighten cap screws to value specified in Table 5-1.

FIGURE 5-1. SHAFT DRIVEN OIL PUMP COUPLING

15a

5-

Rev. 0 BW/IP International Inc., Pump Division 5-MULT-56 5.8.6 Thrust Bearing and Housing Reinstallation 1. Install a new O-ring in its groove in inboard deflector. Position deflector on pump

shaft so as not to interfere with the installation of the bottom bearing housing in the following step.

2. Lift, position and secure the bottom half of thrust bearing housing to pump case


3. Lift the pump shaft as necessary to provide clearance and roll bottom half of sleeve

bearing into bottom half of bearing housing. 4. Install top half of sleeve bearing on it's bottom half. 5. Install inner oil seal on pump in bottom half of thrust bearing housing. 6. Install shaft locating ring on shaft against machined shoulder of shaft. 7. Install thrust disc key in keyway on shaft and install thrust disc on key against

locating ring, then secure thrust disc by installing washer and oil pump drive on pump shaft. Torque locknut to value given in Table 5-1.

8. Install housing rings with attached leveling and rocker plates on each side of thrust

disc so leveling and rocker plates face the thrust disc. 9. Maintain shoe and ring relationship as tagged at disassembly and insert pivot shoe

assemblies into housing rings by rotating rings around shaft as necessary. 10. Rotate both sets of housing ring halves with shoes installed so the locating pin on

each ring set is located at the top. 11. Place, position and secure top half housing on bottom half with dowel pins and cap

screws. Tighten cap screws to value specified in Table 5-1. 12. Slide inboard deflector on pump shaft against bearing housing, then back deflector

away from housing approximately 1/32 inch (.79 mm) and secure to pump shaft with set screws (optional).

NOTE The shimpack in the following step is provided with 0.003 (.076 mm) thick

laminations for setting end float. See Section One, Design data for the amount of end float. See Reference Materials, Section Seven, for procedure used to set end float.

13. Align the through holes in the shimpack and the outer oil seal with the tapped holes

in the thrust bearing housing cover. Secure the parts together with the machine flathead screws provided.

5-

14. Position the oil pump bracket with a new gasket on thrust bearing housing and secure with cap screws. Tighten cap screws to value

15


specified in Table 5-1. Reinstall the shaft driven oil pump as follows (See Figure 5-1.): a. Install key in keyway of oil pump drive. b. Align keyway of drive hub with key and install hub on shoulder of oil pump

drive. Tighten set screw on hub. c. Align cushion to fit drive hub and install cushion. d. Install key in keyway of IMO oil pump shaft. e. Align keyway on driven hub with key and install on IMO oil pump shaft.

Tighten set screw on hub. f. Align oil pump driven hub to fit cushion and install oil pump. Secure the oil

pump to the oil pump bracket by installing the hex head cap screws. Tighten cap screws to value specified in Table 5-1.

FIGURE 5-1. SHAFT DRIVEN OIL PUMP COUPLING

15a

5-


5-16

5.8.7 Radial Bearing and Housing Reinstallation 1. Install a new O-ring in its groove in inboard deflector. Position deflector on pump

shaft so as not to interfere with the installation of the bottom bearing housing in the following step.

2. Lift, position and secure bottom half of the radial bearing housing to pump case


3. Slide oil ring on pump shaft and place on inboard side of bearing housing. 4. Lift the shaft as necessary to provide clearance and roll bottom half of sleeve

bearing into bottom half of bearing housing. NOTE Position oil ring on pump shaft to engage groove in top half bearing housing. 5. Install top half of sleeve bearing on bottom half of sleeve bearing. 6. Place, position and secure top half housing on bottom half with dowel pins and cap

screws. Tighten cap screws to value specified in Table 5-1. 7. Slide inboard deflector on pump shaft against housing, then back off 1/32 inch (.79

mm) and secure to pump shaft with set screw (optional). 8. Install a new O-ring in bore of outboard deflector. Slide outboard deflector on

pump shaft against housing then back off 1/32 inch (.79 mm) and secure to pump shaft with set screw (optional).


5-17

5.9 FINAL ASSEMBLY 1. Install coupling key in keyway on pump shaft. Align pump hub with key and place

on shaft. 2. Install coupling locknut with lockwasher on end of pump shaft. Using a spanner

wrench tighten nut until the hub touches mark previously scribed on shaft. Secure locknut by bending at least one tab of lockwasher into the slot of locknut.

3. If removed, reinstall the assembled pump on the baseplate and reconnect facility

main piping. 4. If mechanical seals are installed, tighten drive collar set screws. Disengage seal

setting plates from rotating parts and secure in place. 5. Connect any piping and instrumentation removed. 6. Perform driver-to-pump coupling alignment in accordance with instructions in

Section Three. 7. Provide lubricating oil to bearing housings before operating the pump.


5-18

TABLE 5-1. TORQUE VALUES FOR CAP SCREWS

Nominal Diameter

Inches

Number of

Threads

Per Inch

Diameter at Root of

Thread

Inches

Area at Root of

Thread

Sq. Inch

Torque

Ft. Lbs.

Torque

Joules

1/4 20 .185 .027 4 6

5/16 18 .240 .045 8 11

3/8 16 .294 .068 12 16

7/16 14 .345 .093 20 27

1/2 13 .400 .126 30 41

9/16 12 .454 .162 45 61

5/8 11 .507 .202 60 81

3/4 10 .620 .302 100 136

7/8 9 .731 .419 160 217

1 8 .838 .551 245 332

1-1/8 7 .939 .693 390 529

1-1/4 7 1.064 .890 545 739

1-3/8 6 1.158 1.054 730 990

1-1/2 6 1.283 1.294 875 1187

1-5/8 5-1/2 1.389 1.515 1200 1627

1-3/4 5 1.490 1.744 1550 2100

1-7/8 5 1.615 2.049 2100 2848

2 4-1/2 1.711 2.300 2250 3050 Data adapted from Crane Co. Catalog No. 60, 1960 Torque values based on threads well lubricated with FEL-PRO-N or equivalent.


5-19

TABLE 5-2. TORQUE VALUES FOR STUDS OTHER THAN CASE PARTING

Nominal Diameter

Inches

Number of

Threads

Per Inch

Diameter at Root of

Thread

Inches

Area at Root of

Thread

Sq. Inch

Torque

Ft. Lbs.

Torque

Joules

1/4 20 .185 .027 4 6

5/16 18 .240 .045 8 11

3/8 16 .294 .068 12 16

7/16 14 .345 .093 20 27

1/2 13 .400 .126 30 41

9/16 12 .454 .162 45 61

5/8 11 .507 .202 60 81

3/4 10 .620 .302 100 136

7/8 9 .731 .419 160 217

1 8 .838 .551 245 332

1-1/8 8 .963 .728 355 481

1-1/4 8 1.088 .929 500 678

1-3/8 8 1.213 1.155 680 922

1-1/2 8 1.338 1.405 800 1085

1-5/8 8 1.463 1.680 1100 1492

1-3/4 8 1.588 1.980 1500 2034

1-7/8 8 1.713 2.304 2000 2712

2 8 1.838 2.652 2200 2983

2-1/4 8 2.088 3.423 3180 4312

2-1/2 8 2.338 4.292 4400 5966

2-3/4 8 2.588 5.259 5920 8028

3 8 2.838 6.324 7720 10468 Data adapted from Crane Co. Catalog No. 60, 1960 Torque values based on threads well lubricated with FEL-PRO-N or equivalent.


5-20

TABLE 5-3. TORQUE VALUES FOR CASE PARTING STUDS

Nominal Diameter

Inches

Number of

Threads

Per Inch

Diameter at Root of

Thread

Inches

Area at Root of

Thread

Sq. Inch

Torque

Ft. Lbs.

Torque

Joule

1/4 20 .185 .027 6 8

5/16 18 .240 .045 12 16

3/8 16 .294 .068 18 24

7/16 14 .345 .093 30 41

1/2 13 .400 .126 45 61

9/16 12 .454 .162 68 92

5/8 11 .507 .202 90 122

3/4 10 .620 .302 150 203

7/8 9 .731 .419 240 325

1 8 .838 .551 368 499

1-1/8 8 .963 .728 553 750

1-1/4 8 1.088 .929 750 1017

1-3/8 8 1.213 1.155 1020 1383

1-1/2 8 1.338 1.405 1200 1627

1-5/8 8 1.463 1.680 1650 2237

1-3/4 8 1.588 1.980 2250 3051

1-7/8 8 1.713 2.304 3000 4068

2 8 1.838 2.652 3300 4475

2-1/4 8 2.088 3.423 4770 6061

2-1/2 8 2.338 4.292 6600 8950

2-3/4 8 2.588 5.259 8880 12041

3 8 2.838 6.324 11580 15702 Data adapted from Crane Co. Catalog No. 60, 1960 Torque values based on threads well lubricated with FEL-PRO-N or equivalent.


6-1

SECTION SIX - SPARE PARTS 6.1 RECOMMENDED See following page and/or sectional drawing part list in “Section Seven”. 6.2 ORDERING Standard Parts - When ordering standard replacement parts, be certain to state: The pump type, serial number and service as shown on pump nameplate. Correct part name and part number as shown on the following page. Parts for pumps on which operating conditions have been changed - If operating

conditions have been changed since pump was purchased, add full particulars of new operating conditions. This is especially important in selection of new impellers.

NOTE Should a change in operating conditions be considered, consult

nearest BW/IP International, Inc. , Pump Division representative or the dealer from whom the unit was purchased to determine whether such a change is feasible.

Oversized or Undersized Parts - If oversized or undersized parts are required add: Dimensions (with sketch of part, if possible). "Pump Division to finish" or "Leave rough - customer to finish". NOTE Customer finishes parts at customer's own risk. Field Alterations - BW/IP International, Inc., Pump Division, accepts no responsibility for

incorrect replacement of original parts or for parts that have been altered in the field. 6.3 STORAGE In general, spare metal parts can be stored indefinitely if adequately protected from

moisture and physical damage. Rubber parts such as spare o-rings have a shelf life of up to 3 years if stored in original heat sealed packaging and are adequately protected from air, light, ozone, radiation, excessive temperature (120oF) (48.9OC) contamination and physical damage.

Documents

INSTALLATION, · Installation of the pump is performed in the sequence described in paragraphs 3.5 through 3.10. Final alignment (paragraph 3.9) and dowelling (paragraph 3.12) are