Pentair FAIRBANKS NIJHUIS 7000-NSF User manual

Part # FN1055| © 2018 Pentair PLC | 08/23/18
FAIRBANKS NIJHUIS
6M THROUGH 44GB 7000-NSF, 7100-NSF
VERTICAL TURBINE PUMPS
POTABLE WATER APPLICATION
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
TM

6M-44GB 7000-NSF, 7100-NSF Vertical Turbine Pumps 3
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NOTE! To the installer: Please make sure you provide this manual to the owner of the equipment or to the responsible party
who maintains the system prior to installation.

4 6M-44GB 7000-NSF, 7100-NSF Vertical Turbine Pumps
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PUMP IDENTIFICATION
Carefully record all of the following data from you pump nameplate. It will aid in obtaining the
correct replacement parts for your pump. In addition to the nameplate, the pump serial number
is stamped on the discharge flange.
Pump: Serial Number ___________________________________________
Model Number ___________________________________________
Pump Size ___________________________________________
Number of Stages ___________________________________________
GPM ___________________________________________
Head (feet) ___________________________________________
Motor: Manufacturer ___________________________________________
Horsepower ___________________________________________
Serial Number ___________________________________________
Motor Frame ___________________________________________
Full Load Speed ___________________________________________
Full Load Amps ___________________________________________
Phase/Hz/Volts ___________________________________________
Date Placed In Service _____________________________________
Gear: Manufacturer ___________________________________________
Serial Number ___________________________________________
Model Number ___________________________________________
Ratio ___________________________________________
Rotation Figure ___________________________________________

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6M THROUGH 44GB-7000-NSF, 7100-NSF VERTICAL TURBINE PUMPS
INSTALLATION, OPERATION AND MAINTENANCE
TABLE OF CONTENTS:
Section 1 General
Safety.………………………………………………6
Storage of Pumps………. ..................................7
Assembled Pumps.............................................7
Unassembled Pumps.........................................8
Section 2 Introduction
General Description .........................................10
Bowl Assembly.................................................10
Column Pipe….. ...............................................10
Line Shafting….. ..............................................10
Discharge Heads .............................................11
Drivers……………............................................11
Section 3 Installation
General……….………………………………… .10
Foundation…….. ..............................................12
Well and Pit Inspection ....................................12
Bowl Assembly ……...…………………………..12
Suction Strainer….……………………………….12
Hoisting, Leveling, Grouting & Piping ..............12
Pump Assembly...............................................13
Product Lubricated Open Line Shaft................13
Water Flush Enclosed Line Shaft ....................17
Driver Installation .............................................20
Vertical Hollow Shaft Drivers ...........................20
Vertical Solid Shaft Drivers..............................22
Style II Coupling.............................................221
Style IV Coupling .............................................24
Section 4 Operation
General………………………………………… ..26
Before Starting the Pump.................................27
Operating at Reduced Capacity.......................27
Initial Startup ...............................................27
Normal Operation.............................................28
Shutdown..………..…………………………… ..28
Seasonal Operating Instructions......................28
Emergency Procedures ...................................28
Start-Up………… .............................................28
Shut-Down…….……........................................29
Troubleshooting.…………………………………29
Pump Symptoms..............................................29
Insufficient Pressure or Flow ...........................29
Loss of Suction Operation ...............................30
Excessive Power Consumption .......................30
Vibration or Noise ............................................31
Execessive Packing Box Leakage...................31
Over-Heating…. ...............................................31
Section 5 Maintenance
Preventive Maintenance ..................................32
Grease Recommendation................................32
Mechanical Seal...............................................32
Packing Adjustment.........................................32
Packing Replacement......................................33
Pump Disassembly..........................................33
Driver Removal…………………………………..34
Vertical Hollow Shaft(VHS) Driver ...................34
Vertical Solid Shaft (VSS) Driver .....................34
Discharge Head Removal................................34
Column Removal .............................................35
Pump Bowl Disassembly.................................36
Inspection for Replacement.............................38
Shaft Straightness............................................38
Pump Bowl Assembly......................................39
Wear Rings……………………………………….40
Mechanical Seals.............................................41
Maintenance History........................................47
Maintenance Notes..........................................48
Section 6 Repair Parts
Ordering Parts……………………………………498
Recommended Spare Parts ............................48
Returning Parts ...............................................48
Predicted Life…...............................................48
Service…………………….. ..…………………...50
Warranty Service .............................................50
Service After Warranty.....................................49
Section 7 Reference Information
Technical Data…………………........................50
Drawings and Diagrams ..................................55

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CONGRATULATIONS! You are the owner of the finest pump commercially available. If you give the proper care as
outlined and recommended by this manual, it will provide you with reliable service and long life.
CALIFORNIA PROPOSITION 65 WARNING: WARNING:
This product and related accessories contain chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
IMPORTANT:
Read this complete manual and manuals for all component equipment before assembly or installation
is started. It is designed to supply adequate instructions for the installation, operation and
maintenance of your pump. Failure or neglect to properly install, operate, or maintain your pump may
result in personal injury, property damage, unnecessary damage to the pump, or may void your
warranty.
This manual applies to the pump installation, operation and maintenance. Variations exist in both the
equipment used with these pumps and in the particular installation of the pump and driver. Therefore, specific
operating instructions are not within the scope of this manual. If your operating conditions ever change,
always refer to the factory for reapplication. Refer to the manuals provided by manufacturers of the accessory
equipment for their separate instructions.
If there are questions regarding the pump or its application that are not covered in this manual, please contact
the factory as follows:
Field Service Department
Fairbanks Nijhuis™
3601 Fairbanks Avenue
Kansas City, KS 66106
Tel: [phone]
To obtain additional data on hydraulics and pump selection and operation, we suggest you purchase the
following reference books:
1. Hydraulic Institute Standards
Hydraulic Institute
9 Sylvan Way
Parsippany, NJ 07054-3802
2. Hydraulic Handbook
Fairbanks Nijhuis™
3601 Fairbanks Avenue
Kansas City, KS 66106

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IMPORTANT SAFETY NOTICE:
Safety should be of the utmost importance when working on or near pumping equipment. Before attempting to
operate this equipment, read this manual in its entirety, taking special notice of all CAUTIONS, WARNINGS
and/or DANGER notifications. These warnings apply to pumps supplied by Fairbanks Nijhuis™. Refer to the
manuals supplied by the driver control manufacturer for additional warnings before operating this equipment.
The words DANGER, WARNING and CAUTION have different connotations and are generally defined as
follows:
DANGER
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, will result in serious
injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury or may indicate that improper practices will result in equipment malfunction or failure.
It may also be used to alert against unsafe practices.
IMPORTANT
Another notation will appear throughout this manual. IMPORTANT indicates the highlight or accent of
specific information.
The installation, use and operation of this type of equipment is affected by various federal, state and local
laws. The regulations concerning OSHA Compliance with such laws relating to the proper installation and safe
operation of this type of equipment is the responsibility of the equipment owner. All necessary steps should be
taken by the owner to assure compliance with such laws before operating or maintaining the equipment.
SAFETY NOTES:
These warnings apply to pumps supplied by Fairbanks Nijhuis™. Refer to the manuals supplied by the driver
or control manufacturers for additional warnings before operating this equipment.
Before attempting to install, operate, or service this pump:
IMPORTANT
Familiarize yourself with this manual. DANGER
Disconnect or lock out the power source to ensure the pump will not start. Check with appropriate
electrical test equipment. DANGER
Do not attempt to service the pump until the electrical power has been disconnected and it has been
verified that the pump cannot start. WARNING
Close the discharge valve before servicing the pump.
WARNING
Certain procedures in disassembly and assembly require parts be heated to high temperatures. Heat
resistant gloves must be worn when handling heated parts. Heated parts can cause severe personal
injury. CAUTION
After the pump has been installed, make certain that the pump and all piping connections are tight
and are properly supported prior to start-up and operation.

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DANGER
Do not operate the pump without the protective guards in place over the rotating parts. Exposed
rotating parts can catch clothing, fingers or tools, causing severe injury. Any operation of this
machine without a protective guard can result in severe bodily injury. The responsibility for the
installation of protective guards is that of the equipment owner.
CAUTION
This pump is designed for the exclusive use of pumping water. It should not be used for pumping
other media unless a specific Purchase/Buyer agreement is negotiated.
WARNING
Do not attempt to try to clean the pump with bare hands. The pumped material may contain items that
may present health hazards such as needles and other sharp objects. Always wear heavy puncture
resistant gloves.
WARNING
Because many installations use automatic starting equipment, the pump unit may start at any time
without warning.
CAUTION
For pumps used in potable water service, all thread lubrication, grease, cleaning materials and paint
must be suitable for potable water. Do not attempt to try to clean the pump with bare hands.
CAUTION
On deep set open line shaft turbines (where static water level is 50' or greater) it is recommended that
the line shaft bearings be pre-lubricated prior to the start of the pump. The discharge head is provided
with a port to accommodate pre-lubrication piping. Refer to the factory for specific pre-lubrication
instructions.
STORAGE OF PUMPS: CAUTION
If the equipment is not to be immediately installed and operated, THE FOLLOWING INSTRUCTIONS
SHOULD BE ADHERED TO AS A MINIMUM.
Consider a unit in storage when:
1. It has been delivered to the job site and is awaiting installation.
2. It has been installed but operation is delayed pending completion of plant construction.
3. There are long (30 days or more) periods between operation cycles.
4. The plant (or facility) is shut down.
NOTE: Improper storage could cause product failure resulting in repairs not covered by warranty.
WARNING
Refer to driver manufacturer’s manual for storage instructions for the motor.
ASSEMBLED PUMPS:
1. Remove the gland halves and packing from the stuffing box, if the pump is so equipped, and coat inside of
packing box with grease. If the pump is equipped with an inside mechanical seal, remove the pipe plug in
the stuffing box cover and coat the seal with light oil. This may be done by using an oil can, squirting the
seal through the tapped opening while rotating the pump shaft. If equipped with an outside seal, oil and
cover for protection.

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2. When pumps are stored assembled in horizontal position, it is necessary to rotate the entire pump and
column assembly 90 degrees once per month. This practice will help prevent the weight of the shafts from
deforming the bearings and shafting.
3. Pumps stored fully assembled and installed are to have the shaft rotated once per week to prevent
brinelling of motor thrust bearings. Packing or mechanical seals are to be serviced as noted above.
UNASSEMBLED PUMPS:
A. Store the unassembled components in a clean, dry and well-ventilated place free from vibrations, moisture
and temperature variation.
B. Wipe all exposed machined surfaces clean and coat with a heavy layer of grease or other equivalent rust
preventive material.
C. Cover the suction and discharge of the pump with cardboard or wood to prevent entry of any foreign
material. This also applies to column sections.
D. The enclosing tube, bearings, shaft and couplings should be stored as components, i.e., shaft with
couplings installed on lower ends inserted into enclosing tubes with bearings installed in upper ends. The
ends should then be wrapped with heavy plastic or protective material and secured tightly to prevent entry
of any foreign material.

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INTRODUCTION:
General Description
A vertical line shaft turbine pump consists of five basic components. These components are the pump bowl
assembly, column pipe, line shafting, discharge head, and driver. Refer to the Technical Data section for
general arrangement drawings.
Bowl Assembly
The 7000-NSF series single stage bowl assembly is made up of a suction bell, a top intermediate bowl and
impeller, and a discharge case. Units of two or more stages include a suction bell, multiple intermediate
bowls and impellers and a discharge case. Refer to the assembly drawing found in the drawing section of this
manual for your specific configuration.
Column Pipe
Column pipe for pumps covered in this manual can be either threaded or flanged.
Threaded column features straight threads on both column ends and butt solidly together within the coupling.
Standard nominal column lengths for threaded column are 5 foot, 10 foot, or 20 foot (enclosed lineshaft only).
Flanged column includes registered fits for accurate column alignment and are bolted together. Flanged
column pipe is available in standard lengths of 10 foot or 5 foot; or can be provided in any special length up to
10 foot.
Line Shafting
The turbine line shaft transmits torque from the pump driver to the pump bowl assembly and rotates inside the
column pipe. Both ends of the shaft are precision machined, and are secured together with couplings. This
shafting is supported by bearings at specific intervals; the types of bearings used and how they are lubricated
are described as follows:
A. Open Line Shaft - Product Lubricated
This design is such that the line shaft and bearings are exposed to and lubricated by the liquid being
pumped. The line shaft is supported at intervals of not more than 10' by bearings that run on shaft
sleeves. Support for these bearings is supplied by bearing retainers. The outer hub of the retainer is
seated between the two column ends. Refer to the specific assembly drawings found in the drawing
section of this manual.
B. Enclosed Line Shaft
In the enclosed line shaft design shafting is surrounded by tubing. This tubing protects both the shaft and
bearings from the pumped liquid and provides a channel for lubricating the shaft bearings. The bearings
have machined grooves on their I. D. to allow lubrication to flow from one bearing to the next. These
bearings are also threaded on the outside diameter and are used to connect the five foot enclosing tube
sections. Lubrication is water from a separate source. The enclosing tube may be supported by spiders
unequally spaced to reduce the risk of vibration. (See the Technical Data Section.)
CAUTION
For pumps used in potable water service, water flush source must be compatible with potable water
application.

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Discharge Heads
Discharge heads perform multiple functions: direct the pump flow from the pump column to the discharge
piping system, provide a method for sealing the line shaft, provide a base from which the pump is suspended,
and provide a mounting surface for the driver.
Surface discharge heads incorporate both the discharge elbow and driver pedestal in one piece. An
underground discharge elbow can also be provided in which case a separate driver pedestal is provided. The
bottom surface of the discharge head or pedestal is machined when furnished with a sole plate.
Drivers
A variety of driver sizes and types can be supplied based on the specific job requirements. Drivers may be
either vertical hollow or vertical solid shaft motors or right angle gears connected to horizontal shaft drivers.
Normally a vertical hollow shaft driver is used. In this configuration, the line shaft passes through the driver,
positioned with an adjusting nut to accommodate impeller adjustment, and is connected to the top of the
driver by a keyed drive hub or coupling. Solid shaft drivers require special adjustable couplings in order to
attach to the pump shaft and to accommodate impeller adjustment. Refer to your submittal package for your
specific pump driver configuration.
INSTALLATION:
General
Prior to assembly and/or installation, the pump and loose parts are to be inspected for completeness,
correctness and cleanliness. During this inspection, all parts are to be thoroughly cleaned and any burrs
removed by filing. The pump bowl assembly, including the line shaft coupling, is normally shipped completely
assembled. Both the suction and discharge openings should be inspected for damage and for foreign
materials. Rotate the shaft by hand, and move in and out to check for end play. Place all parts in an orderly
arrangement for convenient assembly. DANGER
The pump, the pump components, and driver are to be lifted using adequate crane and sling capacity.
All applicable safe hoisting practices should be employed.
WARNING
Extreme caution is to be exercised when hoisting components with open lifting lugs. Precautions
should be taken to prevent hoisting slings from coming out of the lugs.
Never attempt to mount the driver on the discharge head prior to installation of the pump.
Never attempt to hoist the entire pump by the driver lifting lugs or eyes. These lifting points are
designed only to hoist the weight of the driver, not other attached components.
IMPORTANT
All shafting has been pre-straightened to a tolerance of 0.005" in 10 feet prior to leaving the factory or
assembly plant. Care in handling must be taken to insure that the shafting is not bent prior to and
during installation.

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Foundation
A foundation must be supplied consisting of any material that will provide a permanent, rigid support. This
support is to be of sufficient size and depth to fully carry the weight of the pump (full of water) and rigid
enough to prevent vibration.
Anchor bolts are to be supplied and set in place by the installing contractor. Anchor bolts of appropriate size,
length and configuration are required to adequately secure the discharge head/pedestal to the foundation.
When the pump is to be mounted over a pit on structural steel framing, it should be located as close to the
main structure or wall as possible. Cross members are to be used to prevent distortion and vibration of
structural mounting frame.
Well and Pit Inspection
Prior to installation and start-up, the well or pit must be cleaned of all loose material and debris. Both the
suction and discharge openings should be inspected for damage and for foreign materials.
CAUTION
Reduced performance and possible equipment damage may result from ingestion of foreign material
by the pump.
Bowl Assembly
NOTE
Before proceeding, measure and record the pump bowl assembly end play. This information will be
needed later.
Shaft projection is defined as the distance from the discharge bowl mounting surface (flange seat for flanged
column, thread seat for threaded column) to the end of the pump shaft. Nominal standard shaft projection is
17-1/2". The projection is measured with the impellers resting at the bottom of their axial travel. Always
remove the shaft retaining bolt before installing or operating the pump.
Shaft end play is the amount of axial movement available in the pump bowl assembly. Measure and record
the pump bowl end play. This can most easily be accomplished with the bowl assembly in a horizontal
position. Grasp the pump shaft and move the shaft through its maximum axial travel. Consult Table #1 in the
Technical Data Section to assure that the distance measured complies with the specifications for your pump
model.
Discharge cases for open line shaft units are shipped with two pipe plugs installed. Plugs must be left in
place for discharge cases used with enclosed line shaft water-flushed and open line shaft units.
Suction Strainer
If a suction strainer is to be used, it is to be either threaded into the suction case or clipped onto the suction
bell as required.
Hoisting, Leveling, Grouting & Piping
If your pump was shipped completely assembled, it is now ready to install.
WARNING

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The pump is to always be lifted using adequate crane and sling capacity. All applicable safe hoisting
practices should be employed.
The pump is to be hoisted by the discharge head. Pumps thirty feet or more in overall length should also be
supported at the column midpoint to avoid column/shaft distortion and possible pump damage. The pump is
to be lowered onto the anchor bolts and leveled. This can be achieved by applying a good quality machinist's
spirit level to the machined motor mounting surface or to the below-grade pump column, if accessible.
After leveling, the base plate is to be grouted in place with a good quality non-shrinking grout. After the grout
is fully dry, the base plate is to be nutted solidly in place against the grout bed.
Leveling devices are to be removed or backed off and the pump base plate tightened solidly against the grout
bed. All pockets and/or holes left by removal of leveling devices are to be filled with grout.
IMPORTANT
Damaging vibration may result if the base plate is not solidly in contact with the grout bed. Even the
highest quality non-shrink grouts contract slightly during drying. All leveling wedges, nuts or
jackscrews are to be removed or backed off prior to final torquing of the base plate fasteners. Failure
to do so will result in the pump base plate resting on the leveling devices rather than the grout bed.
Piping is to be brought in direct axial alignment with the pump discharge. Flange faces are to fit closely and
squarely. The pump discharge is to have no strain imposed upon it by piping misalignment.
Pump Assembly
If the pump has been shipped disassembled, the following instructions are to be employed to assemble the
unit vertically in the well or sump.
Determine if the pump to be assembled is Product Lubricated Open Line Shaft or Water Flush Enclosed Line
Shaft. Prior to assembly, all components are to be identified and laid out in order of assembly. Standard
length (5’ or 10') intermediate column, and shaft are interchangeable and can be assembled in any order.
However, shorter non-standard column and shaft sections are provided to accomplish the required overall
pump length, and must be installed at the top of the pump directly under the discharge head. The top
enclosing tube also has longer threads to engage the top tube tension nut.
On threaded column, all column couplings are to be installed on the upper end of the column prior to lifting.
This will provide a stop for pipe clamps during the hoisting process.
Product Lubricated Open Lineshaft
Flanged Column
A. Using an appropriate hoisting system, lift the bowl assembly into position over the well. Lower the bowl
partially into the well. Attach a pipe clamp (see Figure #1) to the upper most bowl directly under the bowl
discharge flange. Lower the assembly, allowing it to be supported on the foundation via the pipe clamp.
B. Lift the first section of pre-assembled column & shaft into position over the suspended bowl assembly (see
Figure #2). Care is to be taken not to damage the threads on the pump shaft or line shafts. Clean the
threads and lubricate with appropriate thread lubricant.
CAUTION
For pumps used in potable water service, all thread lubrication, grease, cleaning materials and paint
must be suitable for potable water. Do not attempt to try to clean the pump with bare hands.
A line shaft coupling should already be in place on the pump shaft. Thread the line shaft into the coupling.

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IMPORTANT
Line shaft threads are left hand. Tighten shafts and couplings securely with pipe wrenches.
Assure that no burrs or foreign matter exists on the coupling or on the shaft threads. The threaded
shafts are to butt together solidly and squarely in the center of the coupling. Both shafts are to be
equally engaged in the coupling threads. Threads should be exposed on both ends of the coupling.
NOTE
Shafts with replaceable wear sleeves must be positioned to engage line shaft bearings. The presence
of any foreign material between the shaft ends will cause shaft misalignment and will result in
vibration or accelerated bearing wear.
C. Hoist the first section of column into position over the assembled line shaft. Lower the column onto the
bowl discharge flange. All column joints should be coated with non-hardening gasket sealant. Install bolts
and nuts and tighten.
CAUTION
For pumps used in potable water service, all thread lubrication, grease, cleaning materials, sealants,
and paint must be suitable for potable water. Do not attempt to try to clean the pump with bare hands.
IMPORTANT
Measure the shaft projection. It should conform to the shaft projection measurement taken and
recorded previously on the bowl assembly.
D. The line shaft is to project out beyond the end of the installed column. Install the bearing retainer
assembly over the shaft projection. Seat the retainer OD in the column flange counterbore.
NOTE
Coat the column counterbore with sealant prior to a retainer installation.
NOTE
Bismuth bronze line shaft bearings are to be lubricated with grease prior to installation. Rubber line
shaft bearings should NOT be lubricated. Lubrication of rubber bearings may cause distortion or
swelling.
CAUTION
For pumps used in potable water service, all thread lubrication, grease, cleaning materials, sealants,
and paint must be suitable for potable water. Do not attempt to try to clean the pump with bare hands.
E. Lift the column/bowl assembly slightly and remove the pipe clamp from the bowl. Lower the assembly and
reinstall the pipe clamp below the upper column flange. Lower the assembly so the pipe clamp suspends
the assembly on the foundation.
F. Install the next shaft and column segment as previously instructed assuring that its lower flange
counterbore engages the top of the bearing retainer OD. Coat the column counterbore with sealant prior
to installation.
Install bolts and nuts and tighten. A slight gap will remain between the two column flanges. This condition
allows the bearing retainer to be clamped securely between the flanges.
G. Continue subsequent shaft and column assembly until complete. Continue to measure the shaft
projection after assembly of each shaft/column section.

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NOTE
Standard shaft and column lengths are 10 feet. Non-standard lengths of shafts and column may be
used to accomplish the required overall pump length. Non-standard shaft/column sections will always
be assembled at the top of the pump, directly under the discharge head. The shaft segment which
protrudes through the packing box will always have a replaceable wear sleeve unless otherwise
specified and submitted.
Assembly procedure for underground discharge (U.G.D.) units closely parallels that of standard pumps with
above ground discharge heads. Always refer to the Fairbanks Nijhuis™ submittal drawings and setting plan to
determine the proper location of discharge elbow centerline.
If the packing box of the U.G.D. pump is lubricated by the pumped media, it will be necessary to provide an air
release valve in the top column. This will prevent air from becoming trapped in the column above the
discharge elbow, therefore allowing the media to lubricate the packing box bushing and packing. If the pump's
total dynamic head is not sufficient to raise the media to the altitude of the packing box, an alternate method
of lubrication must be provided.
A. For ease of installation, remove the packing box if shipped assembled to the discharge head.
B. Install column flange gasket (when used) and secure the discharge head to the last column flange. When
attaching the column to the discharge head, make sure the register fit is fully engaging the head.
C. After attaching the column to the discharge head remove the column clamp, and lower the unit to the
foundation and tighten mounting bolts. Check the shaft to see if it is centered in the packing box opening
in the head. If the shaft is not centered, it could be an indication of a bent shaft, column not seated
properly, or the unit is not properly plumbed. Any or all of these problems must be corrected before
proceeding with the installation of the unit.
D. Apply lubricant to the packing box bushing and install the packing box on the discharge head.
CAUTION
For pumps used in potable water service, all thread lubrication, grease, cleaning materials, sealants,
and paint must be suitable for potable water. Do not attempt to try to clean the pump with bare hands.
E. Install the packing and glands into the packing box. Install gland bolts and nuts. Allow the gland nuts
remain loose. Packing adjustment will be performed later with the pump operating. If a mechanical seal is
employed, refer to the Mechanical Seal section of this manual.
Threaded Column
A. Using an appropriate hoisting system, lift the bowl assembly into position over the well. Lower the bowl
partially into the well. Attach a pipe clamp (see Figure #1) to the upper most bowl directly under the bowl
threads. Lower the assembly, allowing it to be supported on the foundation via the pipe clamp.
B. Lift the first section of pre-assembled column & shaft into position over the suspended bowl assembly (see
Figure #2). Care is to be taken not to damage the threads on the pump shaft or line shafts. Clean the
threads and lubricate with appropriate thread lubricant.
CAUTION
For pumps used in potable water service, all thread lubrication, grease, cleaning materials, sealants,
and paint must be suitable for potable water. Do not attempt to try to clean the pump with bare hands.
A line shaft coupling should already be in place on the pump shaft. Thread the line shaft into the coupling.

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IMPORTANT
Line shaft threads are left hand. Tighten shafts and couplings securely with pipe wrenches.
Assure that no burrs or foreign matter exists on the coupling or on the shaft threads. The threaded
shafts are to butt together solidly and squarely in the center of the coupling. Both shafts are to be
equally engaged in the coupling threads. Threads should be exposed on both ends of the coupling.
NOTE
Shafts with replaceable wear sleeves must be positioned to engage line shaft bearings. The presence
of any foreign material between the shaft ends will cause shaft misalignment and will result in
vibration or accelerated bearing wear.
IMPORTANT
Assure that no burrs or foreign matter exists on the column coupling threads or on the column
threads prior to assembly. All joints are to be coated with sealant prior to assembly. The column
sections should butt together solidly and squarely in the middle of the column coupling. Secure each
joint firmly with appropriate wrenches. ALL COLUMN THREADS ARE RIGHT HAND ROTATION.
C. Lower the column and thread it into the bowl assembly until it solidly and squarely butts together with the
bowl, tightening with appropriate wrenches.
D. Lift the column/bowl assembly slightly and remove the pipe clamp from the bowl. Lower the assembly and
reinstall the pipe clamp below the upper column threads. Lower the assembly so the pipe clamp
suspends the assembly on the foundation. The line shaft is to project out beyond the end of the installed
column. IMPORTANT
Measure the shaft projection. It should conform to the shaft projection measurement taken and
recorded previously on the bowl assembly. NOTE
Coat the column counterbore with sealant prior to a retainer installation.
NOTE
Bismuth bronze line shaft bearings are to be lubricated with grease prior to installation. Rubber line
shaft bearings should NOT be lubricated. Lubrication of rubber bearings may cause distortion or
swelling.
CAUTION
For pumps used in potable water service, all thread lubrication, grease, cleaning materials, sealants,
and paint must be suitable for potable water. Do not attempt to try to clean the pump with bare hands.
E. Slide the bearing retainer with bearing over the shaft projection and lower into the column coupling. Install
the shaft coupling and next section of shaft/column assembly as previously outlined.
F. Continue subsequent shaft and column assembly until complete. Continue to measure the shaft
projection after assembly of each shaft/column section.
NOTE
Standard shaft and column lengths are 10 feet. Non-standard lengths of shafts and column may be
used to accomplish the required overall pump length. Non-standard shaft/column sections will
always be assembled at the top of the pump, directly under the discharge head. The shaft segment
which protrudes through the packing box will always have a replaceable wear sleeve unless otherwise
specified and submitted.

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Assembly procedure for underground discharge (U.G.D.) units closely parallels that of standard pumps
with above ground discharge heads. Always refer to the Fairbanks Nijhuis™ submittal drawings and
setting plan to determine the proper location of discharge elbow centerline.
If the packing box of the U.G.D. pump is lubricated by the pumped media, it will be necessary to provide
an air release valve in the top column. This will prevent air from becoming trapped in the column above
the discharge elbow, therefore allowing the media to lubricate the packing box bushing and packing. If the
pump's total dynamic head is not sufficient to raise the media to the altitude of the packing box, an
alternate method of lubrication must be provided.
G. For ease of installation, remove the packing box if shipped assembled to the discharge head.
H. Thread the top column adapter flange onto the top column and tighten with appropriate wrenches. Install
column flange gasket and secure the discharge head to the column adapter flange. When attaching the
column to the discharge head, make sure the register fit is fully engaging the head and the flange is timed
with the pipe tapped hole in the discharge head.
I. After attaching the column to the discharge head, remove the column clamp and lower the unit to the
foundation. Tighten mounting bolts. Check the shaft to see if it is centered in the packing box opening in
the head. If the shaft is not centered, it could be an indication of a bent shaft, column not seated properly,
or the unit is not properly plumbed. Any or all of these problems must be corrected before proceeding
with the installation of the unit.
J. Apply lubricant to the packing box bushing and install the packing box on the discharge head.
K. Install the packing and glands into the packing box. Install gland bolts and nuts. Allow the gland nuts
remain loose. Packing adjustment will be performed later with the pump operating. If a mechanical seal is
employed, refer to the Mechanical Seal section of this manual.
Water Flush Enclosed Line Shaft
Flanged Column
A. Using an appropriate hoisting system, lift the pre-assembled bowl assembly and position it above the well.
Lower the bowl assembly partially into the well and attach a pipe clamp (see Figure #1) to the upper most
bowl directly under the bowl discharge flange. Lower the assembly, allowing it to be suspended on the
foundation via the pipe clamp.
B. Before proceeding with assembly, lay out all line shaft, enclosing tube, column and connectors. Inspect
and identify all items and arrange them in the order in which they will be assembled. Oversized diameter
enclosing tube sections (if used) must be installed at the bottom of the assembly, directly above the pump
discharge bowl. When oversized tube sections are used, special stepped connector bearings are
provided in order to adapt them to the remaining standard diameter enclosing tube sections.
Pre-assemble matching sets of shaft, enclosing tube and column by sliding them inside each other and
attaching connectors and couplings. This will allow each set of column/enclosing tube/shaft to be hoisted
into place and assembled.
Non-standard lengths of column, enclosing tube and line shafting must be assembled at the top of the
pump as previously outlined.
C. Lower the shaft/tube/column assembly into position. A line shaft coupling is to already be in place on the
pump shaft. Assure that the threaded shafts and coupling are clean and free of burrs. Lubricate threads
with light oil. Thread the shafts into the coupling so that both shafts engage the coupling equally. The
shafts should butt together solidly in the center of the coupling. Threads should be exposed on both ends
of the coupling. Assure that no foreign matter exists between the shaft ends. Such a condition will cause
shaft misalignment and will result in vibration and accelerated bearing wear.

18 6M-44GB 7000-NSF, 7100-NSF Vertical Turbine Pumps
Installation, Operation, and Maintenance
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IMPORTANT
Line shaft threads and enclosing tube threads are left hand rotation. Tighten shafts, enclosing tubes
and couplings securely with pipe wrenches.
D. Assure that all enclosing tube threads and connector bearing threads are clean and free of burrs. Coat
connector bearing threads with a potable water compatible sealant prior to assembly. This step is very
important in preventing entry of the pressurized pumped media into the enclosing tube. Thread the
enclosing tube onto the connector bearing and secure with chain wrenches.
E. Clean all coating or foreign materials from the column flange faces prior to assembly. Lower the
shaft/tube/column assembly into position and coat the flange faces with sealant. Assure that the flange
faces engage squarely and that all bolt holes align. Install bolts and nuts and tighten.
CAUTION
For pumps used in potable water service, all thread lubrication, grease, cleaning materials, sealants,
and paint must be suitable for potable water. Do not attempt to try to clean the pump with bare hands.
F. Lift the column and bowl assembly slightly. Remove the pipe clamp from the bowl and lower the
assembly into the well. Reinstall the pipe clamp on the upper end of the column directly below the upper
flange. Lower the assembly until the pipe clamp supports the assembly on the foundation.
IMPORTANT
Measure the shaft projection. It should conform to the shaft projection measurement taken and
recorded previously on the bowl assembly.
G. Repeat the above steps until complete. Continue to measure the shaft projection after assembly of each
shaft/tube/- column section.
NOTE
Although standard column length is 10 feet, some non-standard lengths of column, enclosing tube
and shaft may be required to accomplish the specified overall length of the pump. These non-
standard lengths should be installed at the top of the column, directly under the discharge head.
NOTE
The segment of the line shaft which protrudes through the combination top tube tension nut/packing
box will always have a replaceable wear sleeve. This shaft must be installed so that the sleeve
engages the top tube tension nut bushing.
Assembly procedure for underground discharge (U.G.D.) units closely parallels that of standard pumps
with above ground discharge heads. Always refer to the Fairbanks Nijhuis™ submittal drawings and
setting plans to determine the proper location of discharge elbow centerline.
H. Install column flange gasket (when used) to the upper column flange and secure to the discharge head
being sure it is timed with the pipe tap hole of the discharge head.
I. Clean all mating and threaded surfaces of the packing box. Coat the sealing face of the packing box with
potable water compatible thread sealant.
J. Position the tag board gasket on the underside of the packing box. Coat the exposed surface of the
gasket and threaded portion of the connector bearing with potable water compatible gasket sealant.

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K. Install the packing box over the projecting line shaft and slide into position in the discharge head.
Remembering that the packing box threads are left handed thread it into the top enclosing tube. The
threads should engage the tube smoothly and allow the washer and nut to seat squarely in the counter
bore of the discharge head. Torque the packing box (refer to Table #3).
L. Install the packing and glands into the packing box. Install the gland bolts and nuts. Allow the gland nuts
to remain loose. Packing adjustment will be performed late with pump operating. If a mechanical seal is
employed, refer to the Mechanical Seal section of this manual.
Threaded Column
A. Using an appropriate hoisting system, lift the pre-assembled bowl assembly and position it above the well.
Lower the bowl assembly partially into the well and attach a pipe clamp (see Figure #1) to the upper most
bowl directly under the bowl discharge flange. Lower the assembly, allowing it to be suspended on the
foundation via the pipe clamp.
B. Before proceeding with assembly, lay out all line shaft, enclosing tube, column and connectors. Inspect
and identify all items and arrange them in the order in which they will be assembled. Oversized diameter
enclosing tube sections (if used) must be installed at the bottom of the assembly, directly above the pump
discharge bowl. When oversized tube sections are used, special stepped connector bearings are
provided in order to adapt them to the remaining standard diameter enclosing tube sections.
Pre-assemble matching sets of shaft, enclosing tube and column by sliding them inside each other and
attaching connectors and couplings. This will allow each set of column/enclosing tube/shaft to be hoisted
into place and assembled as demonstrated in Figure #3.
Non-standard lengths of column, enclosing tube and line shafting must be assembled at the top of the
pump as previously outlined.
C. Lower the shaft/tube/column assembly into position. A line shaft coupling is to already be in place on the
pump shaft. Assure that the threaded shafts and coupling are clean and free of burrs. Lubricate threads
with light oil. Thread the shafts into the coupling so that both shafts engage the coupling equally. The
shafts should butt together solidly in the center of the coupling. Threads should be exposed on both ends
of the coupling. Assure that no foreign matter exists between the shaft ends. Such a condition will cause
shaft misalignment and will result in vibration and accelerated bearing wear.
D. Assure that all enclosing tube threads and connector bearing threads are clean and free of burrs. Coat
connector bearing threads with a potable water compatible non-hardening gasket sealant prior to
assembly. Silicone sealants are also permissible. This step is very important in preventing entry of the
pressurized pumped media into the enclosing tube. Thread the enclosing tube onto the connector bearing
and secure with chain wrenches.
IMPORTANT
Assure that no burrs or foreign matter exists on the column coupling threads or on the column
threads prior to assembly. All joints are to be coated with sealant prior to assembly. The column
sections should butt together solidly and squarely in the middle of the column coupling. Secure each
joint firmly with appropriate wrenches. ALL COLUMN THREADS ARE RIGHT HAND ROTATION.
E. Lower the column and thread it into the bowl assembly until it solidly and squarely butts together with the
bowl, tightening it firmly with appropriate wrenches.
The line shaft and enclosing tube is to project out beyond the end of the installed column.
F. Lift the column and bowl assembly slightly. Remove the pipe clamp from the bowl and lower the
assembly into the well. Reinstall the pipe clamp below the upper column threads. Lower the assembly
until the pipe clamp supports the assembly on the foundation.

20 6M-44GB 7000-NSF, 7100-NSF Vertical Turbine Pumps
Installation, Operation, and Maintenance
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IMPORTANT
Measure the shaft projection. It should conform to the shaft projection measurement taken and
recorded previously on the bowl assembly.
G. Repeat the above steps until complete. Continue to measure the shaft projection after assembly of each
shaft/tube/-column section.
NOTE
Standard shaft and column lengths are 10 feet. Non-standard lengths of shafts and column may be
used to accomplish the required overall pump length. Non-standard shaft/column sections will
always be assembled at the top of the pump, directly under the discharge head.
NOTE
The segment of the line shaft which protrudes through the packing box will always have a replaceable
wear sleeve. This shaft must be installed so that the sleeve engages the top tube tension nut
bushing.
Assembly procedure for underground discharge units closely parallels that of standard pumps with above
ground discharge heads. Always refer to the Fairbanks Nijhuis™ submittal drawings and setting plans.
Assembly procedure for underground discharge (U.G.D.) units closely parallels that of standard pumps
with above ground discharge heads. Always refer to the Fairbanks Nijhuis™ submittal drawings and
setting plans to determine the proper location of discharge elbow centerline.
H. Thread the top column adapter flange onto the top column and tighten with appropriate wrenches. Install
column flange gasket and secure the discharge head to the column adapter flange. When attaching the
column to the discharge head, make sure the flange is timed with the pipe tapped hole in the discharge
head.
I. Clean all mating and threaded surfaces of the packing box. Coat the sealing face of the packing box with
potable water compatible thread sealant.
J. Position the tag board gasket on the underside of the packing box. Coat the exposed surface of the
gasket and threaded portion of the connector bearing with potable water compatible gasket sealant.
K. Install the packing box over the projecting line shaft and slide into position in the discharge head.
Remembering that the packing box threads are left handed thread it into the top enclosing tube. The
threads should engage the tube smoothly and allow the washer and nut to seat squarely in the counter
bore of the discharge head. Torque the packing box (refer to Table #3).
L. Install the packing and glands into the packing box. Install the gland bolts and nuts. Allow the gland nuts
to remain loose. Packing adjustment will be performed late with pump operating. If a mechanical seal is
employed, refer to the Mechanical Seal section of this manual.
Driver Installation
IMPORTANT
Read and understand the driver manufacturer’s manual before proceeding. Determine if the driver is
to be installed is a vertical hollow shaft electric motor, a solid shaft motor or a right angle gear. Refer
to the appropriate instructions.
VERTICAL HOLLOW SHAFT DRIVERS
General
Hollow shaft drivers provide a hollow tube through the rotor. The pump shaft passes through the tube and
attaches at the top of the driver. Most turbine pump designs provide a shaft coupling above the packing box
or tube tension nut. This allows the motor to be set in place and the top section of shaft installed later,

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through the top of the driver. Other shaft/head designs have no such coupling and require that the motor be
lowered over the projecting top shaft. CAUTION
Care should be taken to avoid motor/shaft contact during this process as a bent top shaft could
result.
Register fits on the bottom of the driver base and on the top of the discharge head (motor pedestal) will
facilitate approximate driver positioning. The fits are generally loose enough to accommodate the additional
movement required for precision alignment. After precision alignment is achieved, the driver is permanently
held in position by the clamping force of the mounting bolts. Doweling or pinning of the driver is not required,
but may be implemented at the owner's option.
A. Before installation, remove the driver top cover. Remove the driver clutch coupling (or non-reverse ratchet
if so equipped). This will facilitate top shaft installation and rotation check.
B. Using an appropriate hoisting system, lift the driver over the discharge head mounting surface and
carefully lower into position. Engage the driver base over the register fit of the mounting surface.
C. Bolt the driver down. If an electric motor is used, now is the time to connect it to the electrical source and
to verify correct rotation. If a right angle gear is used proceed to step 4.
DANGER
Electrical motors must be installed and operated only by qualified, trained electrical technicians.
Consult the motor manufacturer or the motor manual to assure that all installation and safety
procedures are fully understood and implemented. Always lock out all controls and or supplies and
verify driver cannot be started before installing or servicing electrical apparatus.
CAUTION
Oil lubricated drivers and right angle gears are shipped dry and require an initial fill of the
manufacturer's recommended lubricant prior to bump-start.
With non-reverse ratchets (if so equipped) removed or disabled, "bump" the motor for rotation. This is
generally accomplished on three-phase motors by engaging and immediately disengaging the power switch.
It is seldom necessary to engage the power source for more than one second to determine motor rotation.
Note the direction of motor rotation. If the motor rotates counter clockwise as viewed from the top, the rotation
is correct and installation may proceed. If the motor rotates clockwise as viewed from the top, reverse any two
of the three power leads and motor rotation will be reversed.
CAUTION
Line shaft threads are left hand rotation. Operation of the pump in a clockwise (as viewed from the
top) direction will cause the line shaft couplings to unthread, causing serious damage to the pump.
CAUTION
Assure that no burrs or foreign matter exists on the shaft threads.
D. Install the pump's driver top shaft through the top of the driver and tighten into the line shaft coupling.
Make sure that the top shaft is centered in the tube.
E. Install the driver coupling and/or non-reverse ratchet. Install the gib key (supplied with the driver) into the
driver/shaft keyway. The key should be a close slip fit in the keyways. It may be necessary to deburr or
file the key to achieve the proper fit. Never drive or wedge the key into an overly tight keyway.
F. Install the top shaft adjusting nut. The adjusting nut will be used to lift the shaft/impeller assembly in order
to achieve proper impeller clearance. Adjusting nut threads are right hand rotation.
NOTE