ITT Goulds Pumps 3500XD Manual

Installation, Operation and
Maintenance Instructions
3500XD

Table of Contents
1 Safety..................................................................................................................................................................4
1.1 Important Safety Notice............................................................................................................................. 4
1.2 Safety warnings......................................................................................................................................... 4
1.3 Safety ........................................................................................................................................................5
1.4 General precautions .................................................................................................................................. 6
1.5 ATEX Considerations and Intended Use..................................................................................................9
1.6 Parts ........................................................................................................................................................ 11
2 Pump Description ..........................................................................................................................................12
2.1 Receiving the pump................................................................................................................................. 12
2.1.1 Storage requirements....................................................................................................................12
2.1.2 Handling ........................................................................................................................................ 12
2.2 Introduction.............................................................................................................................................. 13
2.3 Design concept........................................................................................................................................ 14
2.4 Construction details................................................................................................................................. 14
3 Installation........................................................................................................................................................16
3.1 Site / foundation ......................................................................................................................................16
3.2 Level baseplate .......................................................................................................................................17
3.3 Alignment and alignment procedure........................................................................................................ 17
3.3.1 Alignment checks .......................................................................................................................... 18
3.3.2 Alignment criteria ..........................................................................................................................18
3.4 Set up ...................................................................................................................................................... 18
3.5 Measurement ..........................................................................................................................................19
3.5.1 Angular alignment ......................................................................................................................... 19
3.5.2 Parallel alignment..........................................................................................................................20
3.5.3 Complete alignment ...................................................................................................................... 21
3.6 Alignment troubleshooting....................................................................................................................... 22
3.7 Grout baseplate....................................................................................................................................... 22
3.7.1 Alignment check............................................................................................................................23
3.8 Piping ......................................................................................................................................................23
3.8.1 General ......................................................................................................................................... 23
4 Preparation for Startup ...................................................................................................................................24
4.1 Check rotation .........................................................................................................................................24
4.1.1 Check impeller axial clearance ..................................................................................................... 24
4.1.2 Couple pump and driver................................................................................................................24
4.1.3 Lubricating bearings......................................................................................................................25
4.1.4 Shaft sealing ................................................................................................................................. 25
5 Operation and Controls ..................................................................................................................................26
5.1 Air removal system (general description - refer to Figure 17 and 18) for order specific description - refer
to the IOM Appendix ............................................................................................................................... 26
5.2 Level control ............................................................................................................................................ 26
5.3 Dilution system – typical.......................................................................................................................... 28
5.4 Seal/vacuum flush ................................................................................................................................... 29
5.4.1 Pumping water or low consistency stock ...................................................................................... 30
5.4.2 Pumping with stock - start up procedure.......................................................................................30
5.5 Shutdown procedure ...............................................................................................................................31
Table of Contents
3500XD Installation, Operation and Maintenance Instructions 1

5.6 Operation without a vacuum pump.......................................................................................................... 31
5.7 Monitoring during operation..................................................................................................................... 31
6 Maintenance.....................................................................................................................................................34
6.1 Lubrication............................................................................................................................................... 34
6.2 Impeller clearance adjustment ................................................................................................................35
6.3 Disassembly ............................................................................................................................................ 36
6.4 Inspection and overhaul ..........................................................................................................................41
6.5 Reassembly of pump............................................................................................................................... 42
6.6 How to order............................................................................................................................................ 47
6.7 Emergency service.................................................................................................................................. 47
Table of Contents
2 3500XD Installation, Operation and Maintenance Instructions

Preface
This manual provides instructions for the Installation, Operation, and Maintenance of the Goulds Model
3500XD Medium Consistency Pump. This manual covers the standard product plus common options that
are available. For special options, supplemental instructions are supplied. This manual must be read and
understood before installation and start-up.
The design, materials, and workmanship incorporated in the construction of Goulds pumps makes them
capable of giving trouble-free service. The life and satisfactory service of any mechanical unit, however,
is enhanced and extended by correct application, proper installation, periodic inspection, condition moni-
toring and careful maintenance. This instruction manual was prepared to assist operators in understand-
ing the construction and the correct methods of installing, operating, and maintaining these mixers.
ITT - Goulds Pumps shall not be liable for physical injury, damage or delays caused by a failure to ob-
serve the instructions for Installation, Operation, and Maintenance contained in this manual.
Warranty is valid only when genuine ITT - Goulds parts are used.
Use of the equipment on a service other than stated in the order will nullify the warranty, unless written
approval is obtained in advance from ITT - Goulds Pumps.
To assure proper installation, supervision from an authorized manufacturer’s representative is recom-
mended. Additional manuals can be obtained by contacting your local Goulds representative.
This manual explains
• Proper Installation
• Start-Up Procedures
• Operation Procedures
• Routine Maintenance
• Mixer Overhaul
• Troubleshooting
• Ordering Spare or Repair Parts
Table of Contents
3500XD Installation, Operation and Maintenance Instructions 3

1 Safety
1.1 Important Safety Notice
To: Our Valued Customers:
User safety is a major focus in the design of our products. Following the precautions outlined in this man-
ual will minimize your risk of injury.
ITT Goulds pumps will provide safe, trouble-free service when properly installed, maintained, and operat-
ed.
Safe installation, operation, and maintenance of ITT Goulds Pumps equipment are an essential end user
responsibility. This Pump Safety Manual identifies specific safety risks that must be considered at all
times during product life. Understanding and adhering to these safety warnings is mandatory to ensure
personnel, property, and/or the environment will not be harmed. Adherence to these warnings alone,
however, is not sufficient — it is anticipated that the end user will also comply with industry and corporate
safety standards. Identifying and eliminating unsafe installation, operating and maintenance practices is
the responsibility of all individuals involved in the installation, operation, and maintenance of industrial
equipment.
Please take the time to review and understand the safe installation, operation, and maintenance guide-
lines outlined in this Pump Safety Manual and the Instruction, Operation, and Maintenance (IOM) man-
ual. Current manuals are available at https://www.gouldspumps.com/en-US/Tools-and-Resources/Litera-
ture/ or by contacting your nearest Goulds Pumps sales representative.
These manuals must be read and understood before installation and start-up.
For additional information, contact your nearest Goulds Pumps sales representative or visit our Web site
at https://www.gouldspumps.com
1.2 Safety warnings
Specific to pumping equipment, significant risks bear reinforcement above and beyond normal safety
precautions.
WARNING:
A pump is a pressure vessel with rotating parts that can be hazardous. Any pressure vessel
can explode, rupture, or discharge its contents if sufficiently over pressurized causing death,
personal injury, property damage, and/or damage to the environment. All necessary measures
must be taken to ensure over pressurization does not occur.
WARNING:
Operation of any pumping system with a blocked suction and discharge must be avoided in all
cases. Operation, even for a brief period under these conditions, can cause superheating of
enclosed pumpage and result in a violent explosion. All necessary measures must be taken by
the end user to ensure this condition is avoided.
WARNING:
The pump may handle hazardous and/or toxic fluids. Care must be taken to identify the con-
tents of the pump and eliminate the possibility of exposure, particularly if hazardous and/or tox-
ic. Potential hazards include, but are not limited to, high temperature, flammable, acidic, caus-
tic, explosive, and other risks.
1 Safety
4 3500XD Installation, Operation and Maintenance Instructions

WARNING:
Pumping equipment Instruction, Operation, and Maintenance manuals clearly identify accepted
methods for disassembling pumping units. These methods must be adhered to. Specifically,
applying heat to impellers and/or impeller retaining devices to aid in their removal is strictly for-
bidden. Trapped liquid can rapidly expand and result in a violent explosion and injury.
ITT Goulds Pumps will not accept responsibility for physical injury, damage, or delays caused by a failure
to observe the instructions for installation, operation, and maintenance contained in this Pump Safety
Manual or the current IOM available at http://www.gouldspumps.com/literature.
1.3 Safety
Definitions
Throughout this manual the words Warning, Caution, Electrical, and ATEX are used to indicate where
special operator attention is required.
Observe all Cautions and Warnings highlighted in the Pump Safety Manual and the IOM provided with
your equipment.
WARNING:
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Example: Pump shall never be operated without coupling guard installed correctly.
CAUTION:
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
Example: Throttling flow from the suction side may cause cavitation and pump damage.
Electrical Hazard:
WARNING:
Indicates the possibility of electrical risks if directions are not followed.
Example: Lock out driver power to prevent electric shock, accidental start-up, and physical in-
jury.
ATEX:
WARNING:
When installed in potentially explosive atmospheres, the instructions that follow the Ex symbol
must be followed. Personal injury and/or equipment damage may occur if these instructions are
not followed. If there is any question regarding these requirements or if the equipment is to be
modified, please contact an ITT Goulds Pumps representative before proceeding.
Example: Improper impeller adjustment could cause contact between the rotating and station-
ary parts, resulting in a spark and heat generation.
1.3 Safety
3500XD Installation, Operation and Maintenance Instructions 5

1.4 General precautions
WARNING:
A pump is a pressure vessel with rotating parts that can be hazardous. Hazardous fluids may
be contained by the pump including high temperature, flammable, acidic, caustic, explosive,
and other risks. Operators and maintenance personnel must realize this and follow safety
measures. Personal injuries will result if procedures outlined in this manual are not followed.
ITT Goulds Pumps will not accept responsibility for physical injury, damage or delays caused
by a failure to observe the instructions in this manual and the IOM provided with your equip-
ment.
Table 1: General Precautions
WARNING NEVER APPLY HEAT TO REMOVE IMPELLER. It may explode due to trap-
ped liquid.
WARNING NEVER use heat to disassemble pump due to risk of explosion from tapped
liquid.
WARNING NEVER operate pump without coupling guard correctly installed.
WARNING NEVER run pump below recommended minimum flow when dry, or without
prime.
WARNING ALWAYS lock out power to the driver before performing pump maintenance.
WARNING NEVER operate pump without safety devices installed.
WARNING NEVER operate pump with discharge valve closed.
WARNING NEVER operate pump with suction valve closed.
WARNING DO NOT change service application without approval of an authorized ITT
Goulds Pumps representative.
WARNING Safety Apparel:
•Insulated work gloves when handling hot bearings or using bearing
heater
• Heavy work gloves when handling parts with sharp edges, especially
impellers
• Safety glasses (with side shields) for eye protection
• Steel-toed shoes for foot protection when handling parts, heavy tools,
etc.
• Other personal protective equipment to protect against hazardous/toxic
fluids
WARNING Receiving:
Assembled pumping units and their components are heavy. Failure to properly
lift and support equipment can result in serious physical injury and/or
1.4 General precautions
6 3500XD Installation, Operation and Maintenance Instructions

equipment damage. Lift equipment only at specifically identified lifting points
or as instructed in the current IOM. Current manuals are available at
www.gouldspumps.com/literature_ioms.html or from your local ITT Goulds
Pumps sales representative. Note: Lifting devices (eyebolts, slings, spreaders,
etc.) must be rated, selected, and used for the entire load being lifted.
WARNING Alignment:
Shaft alignment procedures must be followed to prevent catastrophic failure of
drive components or unintended contact of rotating parts. Follow coupling
manufacturer's coupling installation and operation procedures.
WARNING Before beginning any alignment procedure, make sure driver power is locked
out. Failure to lock out driver power will result in serious physical injury.
CAUTION Piping:
Never draw piping into place by forcing at the flanged connections of the
pump. This may impose dangerous strains on the unit and cause misalign-
ment between pump and driver. Pipe strain will adversely effect the operation
of the pump resulting in physical injury and damage to the equipment.
WARNING Flanged Connections:
Use only fasteners of the proper size and material.
WARNING Replace all corroded fasteners.
WARNING Ensure all fasteners are properly tightened and there are no missing fasten-
ers.
WARNING Startup and Operation:
When installing in a potentially explosive environment, please ensure that the
motor is properly certified.
WARNING Operating pump in reverse rotation may result in contact of metal parts, heat
generation, and breach of containment.
WARNING Lock out driver power to prevent accidental start-up and physical injury.
WARNING The impeller clearance setting procedure must be followed. Improperly setting
the clearance or not following any of the proper procedures can result in
sparks, unexpected heat generation and equipment damage.
WARNING If using a cartridge mechanical seal, the centering clips must be installed and
set screws loosened prior to setting impeller clearance. Failure to do so could
result in sparks, heat generation, and mechanical seal damage.
WARNING The coupling used in an ATEX classified environment must be properly certi-
fied and must be constructed from a non-sparking material.
WARNING Never operate a pump without coupling guard properly installed. Personal in-
jury will occur if pump is run without coupling guard.
1.4 General precautions
3500XD Installation, Operation and Maintenance Instructions 7

WARNING Make sure to properly lubricate the bearings. Failure to do so may result in ex-
cess heat generation, sparks, and / or premature failure.
CAUTION The mechanical seal used in an ATEX classified environment must be proper-
ly certified. Prior to start up, ensure all points of potential leakage of process
fluid to the work environment are closed.
CAUTION Never operate the pump without liquid supplied to mechanical seal. Running a
mechanical seal dry, even for a few seconds, can cause seal damage and
must be avoided. Physical injury can occur if mechanical seal fails.
WARNING Never attempt to replace packing until the driver is properly locked out and the
coupling spacer is removed.
WARNING Dynamic seals are not allowed in an ATEX classified environment.
WARNING DO NOT operate pump below minimum rated flows or with suction and/or dis-
charge valve closed. These conditions may create an explosive hazard due to
vaporization of pumpage and can quickly lead to pump failure and physical in-
jury
WARNING Ensure pump is isolated from system and pressure is relieved before disas-
sembling pump, removing plugs, opening vent or drain valves, or disconnect-
ing piping.
WARNING Shutdown, Disassembly, and Reassembly:
Pump components can be heavy. Proper methods of lifting must be employed
to avoid physical injury and/or equipment damage. Steel toed shoes must be
worn at all times.
WARNING The pump may handle hazardous and/or toxic fluids. Observe proper decon-
tamination procedures. Proper personal protective equipment should be worn.
Precautions must be taken to prevent physical injury. Pumpage must be han-
dled and disposed of in conformance with applicable environmental regula-
tions.
WARNING Operator must be aware of pumpage and safety precautions to prevent physi-
cal injury.
WARNING Lock out driver power to prevent accidental startup and physical injury.
CAUTION Allow all system and pump components to cool before handling them to pre-
vent physical injury.
CAUTION If pump is a Model NM3171, NM3196, 3198, 3298, V3298, SP3298, 4150,
4550, or 3107, there may be a risk of static electric discharge from plastic
parts that are not properly grounded. If pumped fluid is non-conductive, pump
should be drained and flushed with a conductive fluid under conditions that
will not allow for a spark to be released to the atmosphere.
WARNING Never apply heat to remove an impeller. The use of heat may cause an explo-
sion due to trapped fluid, resulting in severe physical injury and property dam-
age.
CAUTION Wear heavy work gloves when handling impellers as sharp edges may cause
physical injury.
CAUTION Wear insulated gloves when using a bearing heater. Bearings will get hot and
can cause physical injury.
1.4 General precautions
8 3500XD Installation, Operation and Maintenance Instructions

WARNING Noise:
Sound pressure levels may exceed 80 dbA in operating process plants. Clear
visual warnings or other indicators should be available to those entering an
area with unsafe noise levels. Personnel should wear appropriate hearing pro-
tection when working on or around any equipment, including pumps. Consider
limiting personnel’s exposure time to noise or, where possible, enclosing
equipment to reduce noise. Local law may provide specific guidance regard-
ing exposure of personnel to noise and when noise exposure reduction is re-
quired.
WARNING Temperature:
Equipment and piping surfaces may exceed 130ºF (54ºC) in operating proc-
ess plants. Clear visual warnings or other indicators should alert personnel to
surfaces that may reach a potentially unsafe temperature. Do not touch hot
surfaces. Allow pumps operating at a high temperature to cool sufficiently be-
fore performing maintenance. If touching a hot surface cannot be avoided,
personnel should wear appropriate gloves, clothing, and other protective gear
as necessary. Local law may provide specific guidance regarding exposure of
personnel to unsafe temperatures.
1.5 ATEX Considerations and Intended Use
Special care must be taken in potentially explosive environments to ensure that the equipment is proper-
ly maintained. This includes but is not limited to:
Product and product handling requirements
These are the product and product handling requirements for Ex-approved products in potentially explo-
sive atmospheres:
•Only use the product in accordance with the approved motor data.
• The Ex-approved product must never run dry during normal operation. Dry running during service
and inspection is only permitted outside the classified area.
• Before you start work on the product, make sure that the product and the control panel are isolated
from the power supply and the control circuit, so they cannot be energized.
• Do not open the product while it is energized or in an explosive gas atmosphere.
• Make sure that thermal contacts are connected to a protection circuit according to the approval
classification of the product, and that they are in use.
• Intrinsically safe circuits are normally required for the automatic level-control system by the level
regulator if mounted in zone 0.
• Do not modify the equipment without approval from an authorized ITT representative.
• Only use parts that are provided by an authorized ITT representative.
Description of ATEX
The ATEX directives are a specification enforced in Europe for electrical and non-electrical equipment
installed in Europe. ATEX deals with the control of potentially explosive atmospheres and the standards
of equipment and protective systems used within these atmospheres. The relevance of the ATEX re-
quirements is not limited to Europe. You can apply these guidelines to equipment installed in any poten-
tially explosive atmosphere.
1.5 ATEX Considerations and Intended Use
3500XD Installation, Operation and Maintenance Instructions 9

Guidelines for compliance
Compliance is fulfilled only when you operate the unit within its intended use. Do not change the condi-
tions of the service without the approval of an ITT representative. When you install or maintain explosion
proof products, always comply with the directive and applicable standards (for example, IEC/EN
60079-14).
1. Monitoring the pump frame and liquid end temperature.
2. Maintaining proper bearing lubrication.
3. Ensuring that the pump is operated in the intended hydraulic range.
The ATEX conformance is only applicable when the pump unit is operated within its intended use. Oper-
ating, installing or maintaining the pump unit in any way that is not covered in the Instruction, Operation,
and Maintenance manual (IOM) can cause serious personal injury or damage to the equipment. This in-
cludes any modification to the equipment or use of parts not provided by ITT Goulds Pumps. If there is
any question regarding the intended use of the equipment, please contact an ITT Goulds representative
before proceeding.
Current IOMs are available at https://www.gouldspumps.com/en-US/Tools-and-Resources/Literature/
IOMs/ or from your local ITT Goulds Pumps Sales representative.
All pumping unit (pump, seal, coupling, motor and pump accessories) certified for use in an ATEX classi-
fied environment, are identified by an ATEX tag secured to the pump or the baseplate on which it is
mounted. A typical tag would look like this:
Figure 1: Typical ATEX pump nameplate
Table 2: Temperature class definitions
Code Maximum permissible
pumpage temperature in °C | °F
Minimum permissible pumpage temperature in °C | °F
T1 450 | 842 372 | 700
T2 300 | 572 277 | 530
T3 200 | 392 177 | 350
T4 135 | 275 113 | 235
T5 100 | 212 Option not available
T6 85 | 185 Option not available
The code classification marked on the equipment must be in accordance with the specified area where
the equipment will be installed. If it is not, do not operate the equipment and contact your ITT Goulds
Pumps sales representative before proceeding.
The CE and the Ex designate the ATEX compliance. The code below reads as follows:
II - Group – Non Mining Equipment
II = Group 2
2 = Category 2
G/D = Gas and Dust present
1.5 ATEX Considerations and Intended Use
10 3500XD Installation, Operation and Maintenance Instructions

T4 = Temperature class, can be T1 to T6 (see Table)
The code classification marked on the equipment must be in accordance with the specified area where
the equipment will be installed. If it is not, do not operate the equipment and contact your ITT Goulds
Pumps sales representative before proceeding.
1.6 Parts
The use of genuine Goulds parts will provide the safest and most
reliable operation of your pump. ITT Goulds Pumps ISO certifica-
tion and quality control procedures ensure the parts are manufac-
tured to the highest quality and safety levels.
Please contact your local Goulds representative for details on
genuine Goulds parts.
1.6 Parts
3500XD Installation, Operation and Maintenance Instructions 11

2 Pump Description
2.1 Receiving the pump
WARNING:
Only trained personnel should do lifting. Pumps and motors often have integral lifting eyes or
eye bolts. These are intended for use in lifting the individual pieces of equipment only. Failure
to properly lift equipment could result in serious physical injury or damage to equipment.
WARNING:
Keep hands and feet from under the unit during these steps. If slings slip and the unit tips over,
severe personal injury or death may result.
Inspect the pump as soon as it is received. Carefully check that everything is in good order. Make notes
of damaged or missing items on the receipt and freight bill. File any claims with the transportation com-
pany as soon as possible.
2.1.1 Storage requirements
Short Term: (Less than 6 months) Goulds normal packaging procedure is designed to protect the pump
during shipping. Upon receipt, store in a covered and dry location.
Long Term: (More than 6 months) Preservative treatment of bearings and machined surfaces will be re-
quired. Rotate shaft several times every 3 months. Refer to driver and coupling manufacturers for their
long term storage procedures. Store in a covered dry location.
NOTICE:
For pumps or back pull-out assemblies supplied with cartridge mechanical seals, the centering
tabs must be in place and tightened, and the set screw collar loosened. Failure to take these
steps could result in damage to the mechanical seal or shaft sleeve.
NOTICE:
Long term storage treatment can be purchased with the initial pump order or can be applied to
pumps already in the field that were not treated at the factory. This service can be supplied by
contacting your local Goulds sales representative.
2.1.2 Handling
WARNING:
Pump and components are heavy. Failure to properly lift and support equipment could result in
serious physical injury or damage to pumps. Steel toed shoes must be worn at all times.
Use care when moving pumps. Lifting equipment must be able to adequately support the entire assem-
bly. Hoist bare pump using a suitable sling, under the suction flange and bearing frame. Base-plate
mounted units are moved with slings under the pump casing and driver. Refer to Figs. 2-4 for examples
of proper lifting techniques.
2 Pump Description
12 3500XD Installation, Operation and Maintenance Instructions

Figure 2: Lifting method, pump only
Figure 3: Lifting method with pump mounted to baseplate
Figure 4: Lifting method with pump and motor mounted to baseplate
NOTICE:
Refer to the Installation section of this manual for detailed instructions for lifting a Polyshield®
ANSI Combo with installed equipment. Never lift a Poly- shield® ANSI Combo with pump and
motor mounted using the procedure shown in Fig. 3 and Fig. 4.
2.2 Introduction
The Goulds Model 3500XD heavy duty stock pump is a centrifugal pump designed to handle paper stock
up to approximately 16% O.D. consistency. The pump design
2.2 Introduction
3500XD Installation, Operation and Maintenance Instructions 13

incorporates special features to induce flow into the pump suction and to remove air that is present in
stock at higher consistencies.
2.3 Design concept
There are two major obstacles in pumping paper stock at consistencies above 8% with a centrifugal
pump: the formation of a fiber network that will not readily flow, and high air content which can cause air
binding of a standard centrifugal pump.
The Model 3500XD pump is normally attached to a suction vessel or "standpipe," and a constant level is
maintained above the suction centerline. An X-Ducer mounted on the end of the pump shaft creates tur-
bulence in the suction standpipe (Fig. 5, Zone 1), breaking up the fiber network and separating air from
the pulp. The pulp is then induced to flow into the pump suction by the static head in the standpipe and
the pumping action of the X-Ducer. The amount of turbulence required (minimum pump speed) as well
as the minimum standpipe level is a function of the stock type, quality, consistency and temperature of
each specific application.
1. Zone 1 - turbulence generation and air separation
2. Zone 2 - Fiber return
3. Zone 3 - Air removal
4. Zone 4 - Pumping zone
Figure 5: Suction standpipe
Air separation occurs due to the action of X-Ducer in Zone
1. The air collects at the center of the X-Ducer and is pumped through balance holes in the impeller
shroud. Any remaining paper stock is separated from the air behind the impeller via a patented
secondary separation device (U.S. Patent #5,087,171) in Zone 2. The paper
stock is pumped to the casing volute via large back pump-out vanes (Zone 4), and the air flows to
atmosphere or to a vacuum source depending on operating conditions (Zone 3).
Pressure generation takes place in the impeller and casing volute in the normal manner once the
air has been removed (Zone 4).
2.4 Construction details
Casing - The casing is vertically split, top centerline discharge, providing a back pullout design for ease
of maintenance. A renewable sideplate is incorporated into the design to reduce maintenance costs. The
sideplate is sealed with an O-ring and gasket.
2.3 Design concept
14 3500XD Installation, Operation and Maintenance Instructions

Impeller - The impeller is an open design with a full back shroud. It is designed for a matched close
clearance with the suction sideplate to provide optimum efficiency. The impeller has balance holes to al-
low air to pass through the back shroud. Remaining paper stock is returned to the casing volute via large
pump-out vanes.
The impeller is keyed to the shaft and sealed with PTFE® O-rings.
X-Ducer - The X-Ducer creates turbulence in the standpipe and feeds the pulp into the pump suction.
The design concentrates the air present in the pulp suspension where it is expelled from the degas holes
in the impeller into the degas system. The X-Ducer is key driven and secured to the shaft with a rotor
nut. PTFE®o-rings protect the shaft.
Repeller - A patented (U.S. Patent # 5,087,171) repeller behind the impeller provides superior secon-
dary air separation. The repeller is keyed to the shaft and sealed with PTFE® O-rings.
Stuffing Box Cover - The stuffing box cover contains a degasification nozzle through which excess air is
removed. Shaft sealing is accomplished with a mechanical seal as standard.
Shaft/Shaft Sleeve - The shaft is designed to minimize deflection in the seal area and at the impeller. It
is protected from the pumpage by a replaceable sleeve sealed with a PTFE® O-ring.
Power End - A heavy duty power end is provided for maximum reliability. It includes a duplex angular
contact thrust bearing and a cylindrical roller radial bearing for maximum load carrying ability. The bear-
ings are sized for a two year minimum L'10 (14 year average) life under the worst operating conditions.
Oil lubrication is standard and the frame is sealed at both ends with labyrinth oil seals. External axial ad-
justment is provided to maintain the proper impeller clearance for optimum efficiency.
2.4 Construction details
3500XD Installation, Operation and Maintenance Instructions 15

3 Installation
3.1 Site / foundation
A pump should be located near the supply of liquid and have adequate space for operation, mainte-
nance, and inspection.
Baseplate mounted pumps are normally grouted on a concrete foundation, which has been poured on a
solid footing. The foundation must be able to absorb any vibration and to form a permanent, rigid support
for the pumping unit.
The location and size of the foundation bolts are shown on the outline assembly drawing, provided with
the pump data package.
Foundation bolts commonly used are sleeve type (Fig. 6) and J Type (Fig. 7). Both designs permit move-
ment for final bolt adjustment.
1
2
3
4
5
6
1. Baseplate
2. Shims
3. Foundation
4. Sleeve
5. Dam
6. Bolt
Figure 6: Sleeve type bolts
1
3
2
4
5
1. Baseplate
2. Shims
3. Foundation
4. Dam
5. Bolt
Figure 7: J type bolts
3 Installation
16 3500XD Installation, Operation and Maintenance Instructions

3.2 Level baseplate
1. Place two sets of wedges or shims on the foundation, one set on each side of every foundation bolt.
The wedges should extend 20 mm (.75 in) to 40 mm (1.5 in) above foundation, to allow for ade-
quate grouting. This will provide even support for the baseplate once it is grouted.
2. Remove water and/or debris from anchor bolt holes/sleeves prior to grouting. If the sleeve type bolts
are being used, fill the sleeves with rags to prevent grout from entering.
Figure 8: Top view
3.
Carefully lower baseplate onto foundation bolts.
4. Level baseplate to within 3.2 mm (.125 in) over length of the baseplate and to within 1.5 mm (0.875
in) over the width of the base by adjusting wedges.
5. Hand tighten bolts.
Figure 9: Side view
3.3 Alignment and alignment procedure
WARNING:
Lock out driver power to prevent accidental start-up and physical injury.
The points at which alignment is checked and adjusted are:
•Initial Alignment is done prior to operation when the pump and the driver are at ambient tempera-
ture.
•Final Alignment is done after operation when the pump and driver are at operating temperature.
Alignment is achieved by adding or removing shims from under the feet of the driver and shifting
equipment horizontally as needed.
3.2 Level baseplate
3500XD Installation, Operation and Maintenance Instructions 17

Accurate alignment of the equipment must be attained. Trouble-free operation can be accomplished
by following these procedures.
3.3.1 Alignment checks
Initial Alignment (Cold Alignment)
• Before Grouting Baseplate - To ensure alignment can be obtained.
• After Grouting Baseplate - To ensure no changes have occurred during grouting process.
• After Connecting Piping - To ensure pipe strains haven’t altered alignment. If changes have occur-
red, alter piping to remove pipe strains on pump flanges.
Final Alignment (Hot Alignment)
• After First Run - To obtain correct alignment when both pump and driver are at operating tempera-
ture. Thereafter, alignment should be checked periodically in accordance with plant operating pro-
cedures.
3.3.2 Alignment criteria
Good alignment is achieved when the dial indicator readings as specified in the alignment procedure
are .05 mm (.002 in.) Total Indicated Reading (T.I.R.) or less when the pump and driver are at operating
temperature (Final Alignment).
During the installation phase, however, it is necessary to set the parallel alignment in the vertical direc-
tion to a different criteria due to the differences in expansion rates of the pump and driver. The table be-
low shows recommended preliminary (cold) settings for electrical motor driven pumps based on different
pumpage temperatures. Driver manufacturers should be consulted for recommended cold settings for
other types of drivers (steam turbines, engines, etc.)
Table 3: Recommended preliminary cold settings for parallel vertical alignment
Pumpage Tempera-
ture
Set Driver Shaft
10° C (50° F) .05 mm (.002 in.) LOW
65° C (150° F) .03 mm (.001 in.) High
120° C (250° F) .12 mm (.005 in.) High
3.4 Set up
1. Mount two dial indicators on one of the coupling halves (X) so they contact the other coupling half
(Y) (Fig. 10).
Figure 10: Dial indicator mounting
3.4 Set up
18 3500XD Installation, Operation and Maintenance Instructions