ITT 3405, 3406, 3416 Maintenance Instructions

Installation, Operation and
Maintenance Instructions

3405-3406-3416

Table of Contents

Table of Contents

1 Safety

2 Installation........................................................................................................................................................ 11

3 Preparation for operation ...............................................................................................................................14

..................................................................................................................................................................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 ........................................................................................................................................................ 10

2.1 Location................................................................................................................................................... 11

2.2 Prepare the foundation............................................................................................................................ 11

2.3 Piping - general .......................................................................................................................................12

2.4 Install suction piping ................................................................................................................................ 12

2.5 Piping - discharge.................................................................................................................................... 13

2.6 Connection of piping................................................................................................................................ 13

3.1 Pump bearings ........................................................................................................................................14

3.2 Driver bearings and coupling................................................................................................................... 15

3.3 Stuffing boxes.......................................................................................................................................... 15

3.4 Connection of water seal piping ..............................................................................................................17

3.5 Connection of piping to quenching gland ................................................................................................17

3.6 Connection of bearing cooling water piping ............................................................................................20

3.7 Connection of drain piping....................................................................................................................... 20

4 Starting pump .................................................................................................................................................. 21

4.1 Priming ....................................................................................................................................................21

4.2 Regulation of cooling water flow.............................................................................................................. 24

4.3

Adjustment of stuffing box gland ............................................................................................................. 25

4.4 Alignment - final....................................................................................................................................... 25

4.5 Doweling.................................................................................................................................................. 25

5 Operation..........................................................................................................................................................26

5.1 Stuffing box .............................................................................................................................................26

5.2 Operating at reduced capacities.............................................................................................................. 26

5.3 Operating at reduced head...................................................................................................................... 27

5.4 Operating with surge conditions in line.................................................................................................... 27

5.5 Operating under freezing conditions .......................................................................................................27

6 Trouble check list............................................................................................................................................28

6.1 No water delivered ..................................................................................................................................28

6.2 Not enough water delivered ....................................................................................................................28

6.3

Not enough pressure............................................................................................................................... 28

6.4 Pump works awhile and then quits..........................................................................................................29

6.5 Pump takes too much power...................................................................................................................29

6.6 Pump leaks excessively at stuffing box...................................................................................................29

6.7 Pump is noisy .......................................................................................................................................... 29

3405-3406-3416 Installation, Operation and Maintenance Instructions 1

Table of Contents

7 Care and maintenance .................................................................................................................................... 31

7.1 Lubrication - bearings..............................................................................................................................31

7.2 Repacking stuffing boxes ........................................................................................................................31

7.3 Sectional view .........................................................................................................................................33

7.4 Dismantling of pump................................................................................................................................ 39

7.5 Reassembly of pump............................................................................................................................... 40

7.6 Changing rotation of pump in field........................................................................................................... 48

7.7 Overhaul of pump....................................................................................................................................48

7.8 Emergency ball bearing replacement......................................................................................................49

7.9 Spare parts..............................................................................................................................................50

7.10 Instructions for ordering spare parts...................................................................................................... 51

2 3405-3406-3416 Installation, Operation and Maintenance Instructions

Foreword

The design, material and workmanship incorporated in the construction of Goulds Model 3405, 3406 and
3416 Double Suction Centrifugal Pumps makes them capable of giving long, trouble-free service. The life
and satisfactory service of any mechanical unit, however
tion, proper installation, periodic inspection and maintenance. This instruction book was prepared so op­erators will understand the construction and the correct methods for installing, operating and maintaining
these pumps.

Read thoroughly Sections 2 Installation on page 11, 3 Preparation for operation on page 14, 4 Starting

pump on page 21 and 5 Operation on page 26 and be sure to follow the instructions for installation

and operation. Sections 6 Trouble check list on page 28 and 7 Care and maintenance on page 31 are
answers to trouble and maintenance questions. Keep this instruction book handy for reference. Kindly
direct any questions or suggestions to the attention of the Engineering Application Div., Goulds Pumps,
Inc., Seneca Falls, New York.

Remember, the experience and recommendation of a Goulds representative are always available on any
pump application problem.

Table of Contents

, is enhanced and extended by correct applica-

3405-3406-3416 Installation, Operation and Maintenance Instructions 3

1 Safety

1 Safety

1.1 Important Safety Notice

T

o: Our Valued Customers:

User safety is a major focus in the design of our products. Following the precautions outlined in this man­ual will minimize your risk of injury.

ITT Goulds pumps will provide safe, trouble-free service when properly installed, maintained, and operat­ed.

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 guide­lines outlined in this Pump Safety Manual and the Instruction, Operation, and Maintenance (IOM) man­ual. 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 suf
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 con­tents of the pump and eliminate the possibility of exposure, particularly if hazardous and/or tox­ic. Potential hazards include, but are not limited to, high temperature, flammable, acidic, caus­tic, explosive, and other risks.

ficiently over pressurized causing death,

4 3405-3406-3416 Installation, Operation and Maintenance Instructions

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

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.

Electrical Hazard:

ATEX:

1.3 Safety

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 for­bidden. Trapped liquid can rapidly expand and result in a violent explosion and injury.

,

.gouldspumps.com/literature.

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.

.

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 in­jury

.

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 station­ary parts, resulting in a spark and heat generation.

3405-3406-3416 Installation, Operation and Maintenance Instructions 5

1.4 General precautions

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
by a failure to observe the instructions in this manual and the IOM provided with your equip­ment.

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.

, damage or delays caused

WARNING ALWAYS lock out power to the driver before performing pump maintenance.

WARNING NEVER operate pump without safety devices installed.

WARNING

WARNING NEVER operate pump with suction valve closed.

WARNING

WARNING Safety Apparel:

WARNING Receiving:

NEVER operate pump with discharge valve closed.

DO NOT change service application without approval of an authorized ITT
Goulds Pumps representative.

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

Assembled pumping units and their components are heavy
lift and support equipment can result in serious physical injury and/or

. Failure to properly

6 3405-3406-3416 Installation, Operation and Maintenance Instructions

WARNING

WARNING

1.4 General precautions

equipment damage. Lift equipment only at specifically identified lifting points
or as instructed in the current IOM. Current manuals are available at

.gouldspumps.com/literature_ioms.html or from your local ITT Goulds

www
Pumps sales representative. Note: Lifting devices (eyebolts, slings, spreaders,
etc.) must be rated, selected, and used for the entire load being lifted.

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.

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

WARNING Flanged Connections:

WARNING Replace all corroded fasteners.

WARNING Ensure all fasteners are properly tightened and there are no missing fasten-

WARNING

WARNING Operating pump in reverse rotation may result in contact of metal parts, heat

WARNING Lock out driver power to prevent accidental start-up and physical injury.

WARNING The impeller clearance setting procedure must be followed. Improperly setting

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 misalign­ment between pump and driver
of the pump resulting in physical injury and damage to the equipment.

Use only fasteners of the proper size and material.

ers.

Startup and Operation:

When installing in a potentially explosive environment, please ensure that the
motor is properly certified.

generation, and breach of containment.

the clearance or not following any of the proper procedures can result in
sparks, unexpected heat generation and equipment damage.

. Pipe strain will adversely effect the operation

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.

3405-3406-3416 Installation, Operation and Maintenance Instructions 7

1.4 General precautions

WARNING Make sure to properly lubricate the bearings. Failure to do so may result in ex-

CAUTION The mechanical seal used in an ATEX classified environment must be proper-

cess heat generation, sparks, and / or premature failure.

ly certified. Prior to start up, ensure all points of potential leakage of process
fluid to the work environment are closed.

CAUTION

WARNING Never attempt to replace packing until the driver is properly locked out and the

WARNING

WARNING

WARNING Ensure pump is isolated from system and pressure is relieved before disas-

WARNING Shutdown, Disassembly, and Reassembly:

WARNING The pump may handle hazardous and/or toxic fluids. Observe proper decon-

WARNING Operator must be aware of pumpage and safety precautions to prevent physi-

WARNING Lock out driver power to prevent accidental startup and physical injury.

Never operate the pump without liquid supplied to mechanical seal. Running a
mechanical seal dry
must be avoided. Physical injury can occur if mechanical seal fails.

coupling spacer is removed.

Dynamic seals are not allowed in an ATEX classified environment.

DO NOT operate pump below minimum rated flows or with suction and/or dis­charge 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

sembling pump, removing plugs, opening vent or drain valves, or disconnect­ing piping.

Pump components can be heavy
to avoid physical injury and/or equipment damage. Steel toed shoes must be
worn at all times.

tamination procedures. Proper personal protective equipment should be worn.
Precautions must be taken to prevent physical injury
dled and disposed of in conformance with applicable environmental regula­tions.

cal injury

.

, even for a few seconds, can cause seal damage and

. Proper methods of lifting must be employed

. Pumpage must be han-

CAUTION Allow all system and pump components to cool before handling them to pre-

vent physical injury

CAUTION

WARNING Never apply heat to remove an impeller. The use of heat may cause an explo-

CAUTION Wear heavy work gloves when handling impellers as sharp edges may cause

CAUTION Wear insulated gloves when using a bearing heater. Bearings will get hot and

8 3405-3406-3416 Installation, Operation and Maintenance Instructions

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.

sion due to trapped fluid, resulting in severe physical injury and property dam­age.

physical injury

can cause physical injury

.

.

.

1.5 ATEX Considerations and Intended Use

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 pro­tection when working on or around any equipment, including pumps. Consider
limiting personnel’
equipment to reduce noise. Local law may provide specific guidance regard­ing exposure of personnel to noise and when noise exposure reduction is re­quired.

WARNING Temperature:

Equipment and piping surfaces may exceed 130ºF (54ºC) in operating proc­ess 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 be­fore 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.

WARNING This product contains Carbon Black a chemical known to the State of Califor-

nia to cause cancer

s exposure time to noise or, where possible, enclosing

. For more information go to www.P65Warnings.ca.gov

1.5 ATEX Considerations and Intended Use

Special care must be taken in potentially explosive environments to ensure that the equipment is proper­ly maintained. This includes but is not limited to:

Description of A

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 re­quirements is not limited to Europe. You can apply these guidelines to equipment installed in any poten­tially explosive atmosphere.

Guidelines for compliance

Compliance is fulfilled only when you operate the unit within its intended use. Do not change the condi­tions 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 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. Oper­ating, 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 in­cludes 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.

TEX

3405-3406-3416 Installation, Operation and Maintenance Instructions 9

1.6 Parts

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 classi­fied environment, are identified by an ATEX tag secured to the pump or the on which it is mounted. A
typical tag would look like this:

Figure 1: Typical ATEX pump nameplate

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 certifica­tion and quality control procedures ensure the parts are manufac­tured to the highest quality and safety levels.

Please contact your local Goulds representative for details on
genuine Goulds parts.

10 3405-3406-3416 Installation, Operation and Maintenance Instructions

2 Installation

2.1 Location

2 Installation

Pumping unit should be placed as close as practical to the source of supply
room to remove the upper half casing of the pump and the rotating element. Floor space allotted to the
pumping unit should be sufficient for inspection and maintenance.

2.2 Prepare the foundation

1. The foundation should be substantial in order to absorb any vibration and to form a permanent rigid
support for the bedplate. A concrete foundation poured on a solid footing, using a one-three-five
mix, of a liberal thickness to support the pumping unit is satisfactory.

2. Foundation Bolts:

a) The location and size of the foundation bolts is shown on the outline assembly drawing sup-

plied for the pumping unit.

b) Each bolt should be installed with a pipe sleeve around it - to allow for adjustment. The inside

sleeve diameter should be 2½ to 3 times the diameter of the bolt. Place a washer between bolt
head and sleeve to hold bolt in position. Stuff waste around foundation bolts to prevent con­crete from entering between the bolt and pipe sleeve. See Figure 2: Foundation on page 11.

c) The foundation bolts should be of sufficient length so that they project through the nut approxi-

mately ¼" after allowance has been made for grouting (¾" to 1½"), the thickness of the bed­plate, and the thickness of the foundation bolt nut. See Figure 2: Foundation on page 11.

. Always allow sufficient head

Figure 2: Foundation

Preparing Foundation for Mounting:

3.

Prior to setting unit upon the foundation, clean the top surface of concrete.

4. Mounting unit on foundation

a) Put the pumping unit in place on the wedges. The wedges should be placed at four points, two

below the approximate center of the pump and two below the approximate center of the driver
(See ). Some installations may require additional wedges near the middle of the bedplate.

b) By adjustment of the wedges, bring the unit to an approximate level and provide for the proper

distance above the foundation for grouting (¾" to 1½"). Plumb the suction and discharge flang­es. By further adjustment of the wedges, bring the coupling halves into reasonable alignment.
Check by method described in Section , steps 4 through 6.

c) After the wedges have been adjusted, tighten foundation bolts evenly but only finger tight.

3405-3406-3416 Installation, Operation and Maintenance Instructions 11

2.3 Piping - general

NOTICE:

Final tightening of foundation bolts is done after grout has set 48 hours.

5. Grouting Unit on Foundation:

a)

Build wood dam around foundation as shown in Figure 2: Foundation on page 11. Wet top sur-
face of concrete foundation thoroughly.

b) Pour grout in hole provided in the top of the bedplate. Use of a non-shrink grout is recommend-

ed. The grout should be thin enough to flow out under the bedplate. A mixture of one part Port­land cement to three parts sharp sand may also be used. Cement grout should not be so thin
that the cement will separate from the sand.

c) The grout should be puddled continuously as it is poured to expel the air and completely fill the

space under the bedplate, to the level of the grout hole in the top of the bedplate.

d) With a trowel, strike along the top of the wood dam to give a neat, finished appearance at this

point.

e) Allow grout to harden at least 48 hours.

2.3 Piping - general

1. All piping must be supported independently of the pump. The piping should always "lineup" natu­rally with the pump flanges. Never draw the piping into place by use of force at the flanged suc­tion and discharge connections of the pump.

2. The piping, both suction and discharge, should be as short and direct as possible. Avoid all un­necessary elbows, bends and fittings, as they increase the friction losses in the piping. The size
of pipe and fittings should be carefully selected and of sufficient size to keep the friction losses as
low as practical.

3. Piping must not be connected to the pump until the grout has thoroughly hardened and the foun­dation bolts as well as driver and pump hold-down bolts have been tightened. See Section

2.6 Connection of piping on page 13.

4. When handling liquids at elevated temperatures, arrangements must be made for expansion
loops or expansion joints so that the linear expansion of the pipe will not cause the pumping unit
to be drawn out of alignment.

2.4 Install suction piping

1. General - properly installed suction piping is of extreme importance for trouble-free centrifugal pump
operation.

a) The suction pipe should be as large or larger than the pump suction.

b) lncreasers, if used, should be eccentric and preferably at the pump suction flange, sloping side

down.

c) A centrifugal pump should never be throttled on the suction side for capacity adjustment.

2. Installations With Pump Above Source of Supply - Suction Lift:

a) Keep suction pipe free from air pockets.

• No portion of piping should extend above
the pump suction nozzle.

b) All joints must be air tight.

c) The suction pipe should always be submerged into the source of supply as shown in .

12 3405-3406-3416 Installation, Operation and Maintenance Instructions

d) A foot valve should only be used if necessary for priming, or, if the pump is to be used on inter-

mittent service and is required to hold its prime.

e) Suction strainers when used should have a net free area of at least three times the suction pipe

area.

3. Installations With Pump Below Source of Supply - Suction Head or Flooded Suction:

a) A gate valve should be installed in the suction line to permit closing the line for pump inspection

and maintenance.

2.5 Piping - discharge

1. A gate valve and a check valve should be installed in the discharge line. The check valve should
be located between the gate valve and pump to permit inspection of the check valve. The gate
valve is required for priming, regulation of flow capacity and for inspection and maintenance of
the pump.

2. lncreasers, if used in discharge line, should be placed between the check valve and the pump.

2.6 Connection of piping

Connect suction and discharge piping. Rotate the pump shaft by hand several complete revolutions to be
sure that there is no binding and that all parts are free. Recheck alignment as described in Section . If
the connection of the piping causes unit to be out of alignment, correct piping to relieve strain on the
pump.

2.5 Piping - discharge

3405-3406-3416 Installation, Operation and Maintenance Instructions 13

3 Preparation for operation

3 Preparation for operation

3.1 Pump bearings

1.

Model 3405 pump bearings are grease lubricated and sufficient lubricant is inserted at the factory
for 2000 hours of operation.

2. Model 3406 pump bearings are ring oil lubricated, and are not lubricated before leaving the facto­ry.

3. Model 3416 pump bearings are flood oil lubricated and are not lubricated before leaving the fac­tory.

A high quality turbine type oil, with rust and oxidation inhibitors, should be used. For the great
majority of operation conditions, oil temperature will run between 50 and 180°F. In this range an
oil of 300 SSU viscosity at 100°F. (approximately SAE 20) should be used.

If oil temperature exceeds 180°F. (Models 3405 and 3406) or 250°F. (Model 3416) for extended
periods of time, use of cooling water as outlined in 3.5 Connection of piping to quenching gland

on page 17 and 3.2 Driver bearings and coupling on page 15 and/or use of a special high tem-

perature oil should be considered. For extreme conditions, refer to factory or a lubrication expert
for a recommendation.

The constant level oilers are found in the box of fittings which accompany the pump. Oiler manu­facturer's instructions accompany the oiler. Set as illustrated below.

Figure 3: Oiler

On the Model 3406 install the constant level oilers in the bearing housing at each end of the
pump. The oiler piping must rest on top of the cap screw which projects from the casing. This
screw keeps the oiler piping level. (See Figure 4: on page 15).

14 3405-3406-3416 Installation, Operation and Maintenance Instructions

3.2 Driver bearings and coupling

Figure 4:

On the Model 3416 install the constant level oilers in the bearing end covers at each end of the
pump, as shown in Figure 5: on page 15. Do not install the oiler in the opening for the optional
cooling coils, which are directly below the oiler

.

Figure 5:

3.2 Driver bearings and coupling

Check to be sure the driver bearings and coupling are properly lubricated.

3.3 Stuffing boxes

Pumps are furnished with packed type stuf
single or double type, can be furnished on order.

Stuffing Boxes with Packing Rings:

In the box of fittings accompanying the pump will be found the stuffing box packing. The standard pack­ing is John Crane "Super Seal" No. 1 and is a general purpose plastic type packing composed of special
long fibre pure asbestos, suitable anti-friction metal particles, fine lubricating graphite, and binder. It con­tains no volatile oils. The packing is die-formed to facilitate installation. "Super Seal" No. 1 is

3405-3406-3416 Installation, Operation and Maintenance Instructions 15

fing boxes as standard. However, mechanical seals, either of

3.3 Stuffing boxes

recommended for water, ammonia, mild chemicals and all general services, and is good for the maxi­mum temperatures for which the pumps are rated.

It is suggested that the packing rings be allowed to soak in #10 SAE oil for 15 minutes to one hour prior
to installation.

When installing the packing and the PTFE lantern ring, twist the rings sideways just enough to get them
around the shaft sleeves. Do not attempt to pull rings straight out to get them over shaft and shaft sleeve.
(See Figure 6: on page 16.)

Figure 6:

Insert two rings of packing for Group "S" & "M" pumps and three rings for Group ''L'' pumps against the
stuf

fing box bushings (125), staggering the joints. See 7.3 Sectional view on page 33. The lantern ring
(105) should then be inserted in the stuffing box. When it is in its proper position, it will be directly oppo­site the sealing inlet connection.

After the lantern ring is in place, insert three more rings of packing, staggering the joints. Two extra rings
of packing are furnished in each set of packing. The extra ring for each side may be added as required.

Insert gland packing (210) into recess in each gland half and trim off excess flush with face of each gland
half.

Now, insert lower half gland (107) into stuffing box. Run ½"-20 SAE nuts (355) about three-fourths the
length of the threaded part of bolts (353) and place cupped washers (354) on gland bolts.

Insert round, flattened end of gland bolts into recesses of bearing housing (134 or 166) on Model 3405,
or into recesses of bearing housing cover (160) on Model 3406. Threaded portion of gland bolts lays on
gland half.

Insert upper half gland into stuffing box. Place cupped washers over the bosses on the gland to hold the
gland halves together.

Draw the gland nuts up evenly but not tight.

Stuffing Boxes With Mechanical Seals:

When mechanical seals are furnished they are installed at the factory and no further adjustments are re­quired.

When single mechanical seals are used, the water seal piping must be connected as explained in

3.4 Connection of water seal piping on page 17.

When double mechanical seals are used, the water seal piping is omitted and the four holes in stuffing
box and casing must be plugged. Cooling liquid from an outside source must be piped to the gland open­ings at a pressure slightly more than the suction pressure of the pump.

The two gland openings are tapped for 1/8" pipe.

16 3405-3406-3416 Installation, Operation and Maintenance Instructions

3.4 Connection of water seal piping

ater seal piping is required only when pump is operating under suction lift or when single mechanical

W
seal is used. It is not necessary when pump is operating under suction head or when double mechanical
seal is furnished, in which cases the four openings in the stuffing box and casing must be plugged.

On all iron pumps or when the pump is handling hydro-carbons, solvents and similar liquids, a grease
lubricator, using a non-solvent grease, should be fitted into the tapped opening in stuffing boxes (Figure

7: on page 17).

3.4 Connection of water seal piping

Figure 7:

If the liquid contains abrasives or paper stock particles (white water applications) or is gritty
ter seal piping and plug the tapped openings in the casing. Pipe a clean water supply with a shut-off
valve to each of the openings at the top of stuffing boxes at a pressure slightly higher than the suction
pressure on the pump.

The water seal piping, when required, is shipped separately in the box of fittings accompanying the
pump. When this piping is used, one end is attached to the tapped opening in the casing and the other
end to the tapped opening on the top of the stuffing box with connectors furnished. See 7.3 Sectional

view on page 33.

3.5 Connection of piping to quenching gland

The stuffing box gland can be operated with or without quenching water. Quenching is recommended on
applications where the liquid pumped is:

1. Bearing Housing Showing Slots for Gland Bolt Heads.

, omit the wa-

3405-3406-3416 Installation, Operation and Maintenance Instructions 17

3.5 Connection of piping to quenching gland

2. First Half of Stuffing Box Gland Installed.

3. Lay Gland Bolts on bottom half of Gland with bolt heads in bearing housing slots. Nuts and spe­cial cup washers should be all the way back on the bolts, toward the bolt heads as shown.

4. Install top half of stuffing box gland over gland bolts and bottom half of gland.

18 3405-3406-3416 Installation, Operation and Maintenance Instructions

3.5 Connection of piping to quenching gland

5. Slide cup washers over shoulders of gland flanges and tighten nuts evenly to provide proper
pressure against stuf

fing box packing. Gland bolts do not screw into tapped holes in casing. Tap-

ped holes in casing are for mechanical seal gland only when pumps are furnished with seals.

1. Model 3405 - Between 180°F and 250°F when bearing housings are not cooled and between
250°F and 350° F

, in addition to bearing housing cooling.

2. Model 3406 - Between 180° and 250°F.

3. Model 3416 - Between 250° and 350°F when bearing housings are not cooled and between 350°
and 400°F, in addition to bearing housing cooling.

3405-3406-3416 Installation, Operation and Maintenance Instructions 19

3.6 Connection of bearing cooling water piping

4. Volatile or toxic, in order to smother the gland leakage, which then can be piped away.

The quenching liquid must be from an outside source and should be piped with a flexible pipe,
into the opening in the upper gland half and allowed to drain into chamber or pocket in lower half
casing. When used for cooling, the flow should be regulated as shown in 4.2 Regulation of cool-

ing water flow on page 24. The openings in the gland halves should be installed in each

quenching line.

3.6 Connection of bearing cooling water piping

Water cooled bearing housings are furnished when ordered (Models 3405 and 3416 only). Bearing cool­ing should be used when the liquid pumped is:

1. Model 3405 between 180° and 250°F when gland quenching is not used and between 250° and
350°F, in addition to gland quenching.

2. Model 3416 between 250° and 350°F when gland quenching is not used and between 350° and
400°F, in addition to gland quenching.

On the Model 3405 - cooling water lines should be connected to the 3/8" pipe tap openings in the
bearing housing, as shown in the sectional assembly, 7.3 Sectional view on page 33. The inlet
line should be at the bottom, and should have a shut-off valve installed to regulate flow. See Reg­ulation of cooling water flow for instructions for regulating cooling water flow.

On the Model 3416 - the cooling coils are installed as follows:

1. Refer to Figure 1, which shows the installed cooling coil.

2. Special fittings and tubing are in the box of fittings sent with the pump.

3. Remove four - ¼" plugs from bearing end covers (109 and 119) - one plug from each side of
each cover. The plugged openings are those below the openings for the constant level oilers.

4. Screw ¼" pipe x ¼" O.D. tube compression fittings into each of the four openings.

5. Push each ¼" 0.D. x 9" long copper tube through one fitting until it comes out the .fitting on the
other side. Center tubing so that equal lengths project from each side. Tighten nuts on compres­sion fittings.

6. Connect the ¼" pipe x ¼" O.D. tubing elbow to each end of the copper tube. This provides a ¼"
pipe connection for cooling water piping.

7. Connect cooling water. The inlet line should have a shutoff valve to regulate flow.

3.7 Connection of drain piping

Connect overflow outlets from stuffing boxes (located in casing near pump feet) to drain, and connect
overflow from bedplate (located at pump end of bedplate) to drain. All of the above overflow openings
are tapped for ¾" pipe.

20 3405-3406-3416 Installation, Operation and Maintenance Instructions

4 Starting pump

4.1 Priming

The pump must always be fully primed and the suction pipe full of liquid before pump is started.

4 Starting pump

If pump is run dry
the liquid being pumped for lubrication.

Several different methods of priming can be used, depending on the type of installation and service in­volved.

, the rotating parts within the pump may seize to the stationary parts as they depend on

NOTICE:

If the pump is being used to pump potable or drinking water
ed against back-siphonage by the installation of a check valve and an approved type vacuum
breaker.

Suction Supply Above Pump:

When pump is installed as shown in Figure 8: on page 21, pump will prime itself. Open gate valve on
suction and close discharge gate valve. Open air vent valves until all air is expelled and water flows
through openings. Close air vent valves, start pump, open discharge gate valve, and pump will continue
to be primed for any future starting.

, the priming line should be protect-

Figure 8:

This method is the simplest and, particularly for automatic operation, the safest. A float switch in the suc­tion reservoir can be arranged to stop pump, should there be failure of liquid supply

Priming With Foot Valve:

With pump installed on suction lift, with foot valve at end of suction line, priming can be done any of the
following three ways:

1. From Some Outside Supply (See Figure 9: on page 22). Close discharge gate valve, open air
vent valves and open valve in primary supply line until all air is expelled and water issues from
vent openings. Close valve in priming supply line, close air vent valves and start pump; then
open discharge gate valve.

3405-3406-3416 Installation, Operation and Maintenance Instructions 21

.

4.1 Priming

Figure 9:

2.

By Separate Hand or Manually Controlled Priming Pump (See Figure 10: on page 22).

Figure 10:

Close discharge gate valve (keep air vent valves closed) and open valve in line to priming pump.
Exhaust air from pump and suction piping until water flows from priming pump. Close valve in
priming line, start pump and open discharge gate valve. Or

, by reversing connections on priming
pump and extending priming pump suction to source of liquid supply, centrifugal pump may be
primed by pumping liquid into casing until liquid comes out of the open air vent valves. As in Sec­tion 4.1 Priming on page 21 A2 (a). In either of these methods (a) and (b), the pump will remain
primed, provided foot valve is tight. Any failure, however, of foot valve when pump is standing
idle, will permit the pump to lose its prime. During long idle periods, the pump can also lose its
prime through leakage from stuffing boxes.

3. Bypassing Around Discharge Check Valve (See Figure 11: on page 23).

22 3405-3406-3416 Installation, Operation and Maintenance Instructions

4.1 Priming

Figure 11:

This method can be used only when there is liquid under some pressure in the discharge line.
The original prime must be ef

fected from some outside source. After subsequent idle periods,
open air vent valves and open valve in bypass line around discharge check and gate valves until
liquid flows from air vent openings. Close air vent valves and bypass valve, start pump and open
discharge gate valve.

The valve in bypass can be left open, in which event, during idle periods, loss through foot valve
is constantly replenished from discharge line. This system is used for automatic operation where
idle periods are of short duration and there is no danger of exhausting all liquid from discharge
line, due to a leaky foot valve. If the valve in the bypass is left open, as described above, the foot
valve must be capable of withstanding static head pressure of the system.

Priming by Ejector:

On suction lift installations, an ejector, operated by steam, compressed air, or water under pressure, and
connected to tapped opening in top of casing can be used to remove air from casing and suction line,
thus priming the pump.

Close discharge gate valve, open valve "E" in steam, air or water pressure supply line. Open valve "S" in
suction pipe of ejector connected to pump casing. Air will be evacuated and liquid will be drawn up into
suction pipe and pump casing. When all air is evacuated, start pump, close valve "S" and valve "E", and
open discharge gate valve.

3405-3406-3416 Installation, Operation and Maintenance Instructions 23

4.2 Regulation of cooling water flow

Figure 12:

Priming by Automatic Primer Pump

Where there is a fluctuating suction lift that occasionally might drop below the normal limits of the pump
or for installations where there is any quantity of air entrained with the liquid being pumped, the system
shown in Figure 13: on page

24 is very well adapted.

A vacuum tank and a vacuum gauge can be installed near the primer pump and the vacuum switch set
to automatically start or stop the primer pump according to the vacuum required to keep the system
primed.

Figure 13:

4.2 Regulation of cooling water flow

The supply of liquid to the water-cooled bearings and quenching glands should be regulated by valves in
the supply line. Approximately ½ G.P
cient. The cooling lines should be checked periodically to see that they have not become clogged.

.M. to each gland and G.P.M. to each bearing cooling coil is suffi-

24 3405-3406-3416 Installation, Operation and Maintenance Instructions

4.3 Adjustment of stuffing box gland

Adjustment of stuf

4.3

fing box gland

With pump running at rated speed, stuf
only one-sixth of a turn at a time, allowing sufficient time between adjustments for the packing to adjust
itself and the effect on the leakage to be observed. If any sign of heating is evident, shut off the pump
and allow the boxes to cool. Several starts may be necessary before the boxes run cool. Do not back off
the gland nuts on a hot box as this will usually result in liquid leaking between the outer edge of the pack­ing and the stuffing box bore. It must be borne in mind that it takes newly-installed packing some time to
"run in" and that during this period, frequent attention and careful adjustments are necessary. See

5.1 Stuffing box on page 26 for final adjustments of gland.

4.4 Alignment - final

Final alignment can only be accomplished after unit has been run under actual operating conditions for a
sufficient length of time to bring the unit up to operating temperatures.

After this warm-up period has elapsed, stop the unit and immediately disconnect the coupling and check
the alignment.

Follow the alignment procedure as outlined in Alignment - initial, with the exception of Paragraph 6,
which allows for "growth" of the parts due to temperature difference between the driver and the pump.
However, at the operating temperature, the unit will be in correct horizontal and vertical parallel align­ment when a straight edge rests evenly on both halves of coupling rims at four points 90° apart.

As cautioned in 6, changing alignment in one direction may alter the alignment in another. Check through
each alignment procedure after making any alignment change.

fing box glands can be adjusted. Draw gland nuts up evenly and

4.5 Doweling

Doweling is not required in Group "S" and "M" pumps. On these pumps, patented lock washers are fur­nished which hold the pump and driver feet securely in place.

On Group "L" pumps, the pump and driver should be doweled after installation is complete and the unit is
in correct final alignment. Four #6 taper dowel pins are included in the box of fittings accompanying the
pump.

These pins have a taper of ¼" to the foot. The diameter at large end is 0.341" (approximately 11/32"')
and the recommended drill size is 9/32".

Drill through two diagonally opposite feet of the pump and driver into the bedplate. Use a reamer with a
taper of ¼" to the foot. Ream out the drilled holes so that dowels extend well into the bedplate but project
above the pump and driver feet.

If the operator so desires, the same size pins and method of doweling can be used on Series "S" and "M"
pumps in addition to the patented lock washers.

To determine the group of a particular size pump, see interchangeability list, 7.3 Sectional view on page

33.

3405-3406-3416 Installation, Operation and Maintenance Instructions 25

5 Operation

5 Operation

5.1 Stuffing box

1.

Stuffing Boxes With Packing Rings - Less Quenching Gland and Grease Lubricator:

Periodically inspect stuffing box to see that there is sufficient leakage to lubricate the packing and
maintain a cool box. Never draw up packing so that the stuffing box heats, as this will cause
damage to both packing and sleeve. Always draw up gland nuts evenly and when pump is run­ning.

After pump has been in operation for some time and the packing has been completely run in, at
least 40 to 60 drops per minute of the liquid should be allowed to trickle from the stuffing box at
all times for cooling and lubricating the packing and shaft sleeve.

2. Stuffing Boxes With Packing Rings - With Quenching Gland:

The same precautions as described above apply. However, the amount of leakage through the
packing cannot be so readily ascertained, due to the quenching liquid. In most cases, the valve
on the quenching liquid supply line can be shut off for a short period and the amount of leakage
determined as in 5.1 Stuffing box on page 26 1. In no instance should the gland be drawn up
tight.

3. Stuffing Boxes With Packing Rings - With Grease Lubricator:

Operation is the same as directed in 5.1 Stuffing box on page 26 with the addition that the handle
on the lubricator should be given a turn or two about every 100 hours off operation.

4. Stuffing Boxes With Mechanical Seal:

This type of box requires no attention other than to make sure that the circulating lines do not
become dogged.

5.2 Operating at reduced capacities

Do not operate a centrifugal pump at greatly reduced capacities or with discharge gate valve closed, be­cause the energy required to drive the pump is converted into heat. If this condition exists over a long
period, the temperature of the liquid in the pump may increase until the boiling point is reached. If this
occurs, the rotating parts are exposed to vapor with no lubrication and they may score or even seize to
the stationary parts; and furthermore, if running clearances have enlarged due to wear, seizure may not
take place. Continued operation under these conditions may create an explosive hazard due to the con­fined vapor under high pressure and temperature.

To guard against possible damage, protective devices are available, such as:

1. Liquid temperature relay or thermostat which will shut off the unit if the liquid temperature in the
pump exceeds a predetermined maximum. This device guards against possible damage due to
running the pump against a closed valve.

2. Constant open bypass orifice between the pump discharge and any check or regulating valve in
the discharge line. The liquid through the orifice is returned to the suction source. The amount of
liquid by-passed is a function of input horsepower and the allowable temperature rise. This de­vice also is insurance against damage due to running the pump against a closed discharge valve
or very low flow conditions.

3. Bearing temperature relay which will shut the unit down if the bearing temperature exceeds a
predetermined maximum.

4. Low suction pressure control which will shut off the unit should the suction pressure drop below a
pre-established minimum.

A centrifugal pump should never be throttled for capacity adjustment on the suction side.

26 3405-3406-3416 Installation, Operation and Maintenance Instructions

5.3 Operating at reduced head

On motor driven pumps, when discharge head or pressure is allowed to drop considerably below the rat­ed point for any length of time, the motor should be watched for heating because the pump capacity in­creases rapidly with reduced head, as does horsepower consumption. If this condition is likely to persist,
arrangements should be made either to manually or automatically throttle the discharge valve to build up
head to a safe point.

5.4 Operating with surge conditions in line

If pump is installed with a quick closing valve in discharge line that closes when pump is running, danger­ous pressure surges may be built up that can cause damage to the pump or line. In services of this kind,
some cushioning arrangement must be provided to protect the pumping equipment.

5.5 Operating under freezing conditions

When exposed to freezing conditions and pump is standing idle, liquid inside the pump should be
drained by removing drain plugs in bottom of casing and opening air cocks at top. Cooling water should
also be drained from the water-cooled bearing (if water-cooled bearings are used).

5.3 Operating at reduced head

3405-3406-3416 Installation, Operation and Maintenance Instructions 27

6 Trouble check list

6 Trouble check list

6.1 No water delivered

1.

Priming - casing and suction pipe not completely filled with liquid.

*1

2.

Speed too low.

3. Discharge head too high. Check total head (particularly friction loss).

4. Suction lift too high (suction pipe may be too small or long, causing excessive friction loss),
Check with gauge.

5. Impeller or suction pipe or opening completely plugged.

6. Wrong direction of rotation.

7. Air pocket in suction line.

8. Stuffing box packing worn or water seal plugged allowing leakage of air into pump casing.

9. Air leak in suction line.

10. Not enough suction head for hot water or volatile liquids. Check carefully as this is a frequent
cause of trouble on such service.

*1 When connected to electric motors, check whether motor wiring is correct and receives full voltage.

When connected to steam turbines, make sure that turbine receives full steam pressure.

6.2 Not enough water delivered

1. Priming - casing and suction pipe not completely filled with liquid.

*1

2.

Speed too low.

3. Discharge head higher than anticipated. Check total head (particularly friction loss).

4. Suction lift too high (suction pipe may be too small or long, causing excessive friction loss).
Check with gauge.

5. Impeller or suction pipe or opening partially plugged.

6. Wrong direction of rotation.

7. Air pocket in suction line.

8. Stuffing box packing worn - or water seal plugged allowing leakage of air into pump casing.

9. Air leak in suction line.

10. Not enough suction head for hot water or volatile liquids. Check carefully as this is a frequent
cause of trouble on such service.

11. Foot valve too small.

12. Foot valve not immersed deeply enough (see Figure 8).

13. Mechanical defects: Wearing rings worn. Impeller damaged. Casing gasket defective.

*1 When connected to electric motors, check whether motor wiring is correct and receives full voltage.

When connected to steam turbines, make sure that turbine receives full steam pressure.

6.3 Not enough pressure

*1

1.

Speed too low.

2. Air in water.

28 3405-3406-3416 Installation, Operation and Maintenance Instructions

3. Impeller diameter may be too small.

4. Mechanical defects: Wearing rings worn. Impeller damaged. Casing gasket defective.

5. Wrong direction of rotation.

6. Be sure pressure gauge is in correct place on dis charge nozzle of pump and not on top of cas­ing.

*1 When connected to electric motors, check whether motor wiring is correct and receives full voltage.

When connected to steam turbines, make sure that turbine receives full steam pressure.

6.4 Pump works awhile and then quits

1. Leaky suction line.

2. Stuffing box packing worn - or water seal plugged allowing leakage of air into pump casing.

3. Air pocket in suction line.

4. Not enough suction head for hot water or volatile liquids. Check carefully as this is a frequent
cause of trouble on such service.

5. Air or gases in liquid.

6. Suction lift too high (suction pipe may be too small or long, causing excessive friction loss).
Check with switch gauge.

7. Impeller plugged.

6.4 Pump works awhile and then quits

6.5 Pump takes too much power

*1

1.

Speed too high.

2. Head lower than rating, pumps too much water.

3. Liquid heavier than water. Check viscosity and specific gravity.

4. Mechanical defects:

• Shaft bent.

• Rotating element binds.

• Stuffing boxes too tight.

• Pump and driving unit misaligned.

*1

5.

Wrong direction of rotation.

*1 When connected to electric motors, check whether motor wiring is correct and receives full voltage.

When connected to steam turbines, make sure that turbine receives full steam pressure.

6.6 Pump leaks excessively at stuffing box

1. Packing is worn or not properly lubricated.

2. Packing is incorrectly inserted or not properly run in.

3. Packing is not right kind for liquid handled.

4. Sleeves scored.

6.7 Pump is noisy

1. Hydraulic noise - cavitation, suction lift too high. Check with gauge.

2. Mechanical defects:

3405-3406-3416 Installation, Operation and Maintenance Instructions 29

6.7 Pump is noisy

• Shaft bent.

• Rotating parts bind, are loose or broken. Bearings worn out.

• Pump and driving unit misaligned.

30 3405-3406-3416 Installation, Operation and Maintenance Instructions

7 Care and maintenance

7.1 Lubrication - bearings

Grease Lubricated Bearings

1.

As specified in Section 3.1 Pump bearings on page 14, Model 3405 pumps with grease lubricat­ed bearings are lubricated at the factory for 2000 hours or three months service. Do not add
grease at too frequent intervals. It is suggested that additional or replacement lubricant be added
only after 2000 hours operation or three month intervals. While shaft is revolving, insert grease
through "Alemite" fittings (193) into bearing housing until grease appears through relief fitting
(113), Do not add additional lubricant after grease appears through relief fitting.

2. The grease should be renewed in the Model 3405 housings at least once annually.

• Following an overhaul operation and when bearing housings contain no lubricant, pro­ceed to grease the bearings as follows: Insert grease through "Alemite" fittings (193) into
bearing housing until grease comes out the relief fitting. Turn shaft by hand several revo­lutions in both directions during the greasing operation. Do not add additional lubricant af­ter grease appears through the relief fitting.

• Grease may be renewed in housings without removing rotating element as follows: Re­move bearing end covers (109-119) and clean old grease from housing and covers using
clean cloths soaked in kerosene. Insert grease through "Alemite" fittings until new grease
appears through the bearings. Wipe bearing housings clean again to remove all old
grease displaced through the bearing. Replace end covers and add grease through the
"Alemite" fittings as described previously.

3. The ball bearing grease should be of a sodium or lithium base, NGLI No. 2 consistency. Do not
use graphite.

4. The following is the approximate grease capacity for each bearing housing in fluid ounces:

7 Care and maintenance

Group "S" - 2 ounces.

Group "M" - 3 ounces.

Group "L" - 4½ ounces.

Oil Lubricated Bearings

1. On Model 3406 and 3416 pumps, keep oiler bottle filled with correct grade of oil. Oiler will main­tain constant oil level in bearing housings.

2. Under normal operating conditions, a good grade of oil will be suitable for 6 months to one year
between changes, as long as it is free from contaminants. A small sample of oil should be
drained from the bearing frame periodically. Any cloudiness, turbidity, discoloration or presence of
solids is evidence of contamination, and the oil should be changed immediately.

7.2 Repacking stuffing boxes

1. To remove stuffing box gland assembly: Back off nuts (355). Slip the cupped washers (354) from
bosses on gland, lift the upper gland half out of stuffing box and remove the gland bolts and lower
gland half. This now affords unobstructed access to the stuffing box for repacking.

2. Remove the three outer rings of packing with the aid of a packing hook.

3. Remove split lantern ring by inserting a wire hook in the slots in the outer edge of the ring and pull­ing ring from box.

4. Remove the remaining rings of packing with the aid of a packing hook.

5. Remove all foreign matter from stuffing box.

3405-3406-3416 Installation, Operation and Maintenance Instructions 31

7.2 Repacking stuffing boxes

6. An alternate method of removing the packing and lantern ring is as follows: Remove the upper half
casing. See 7.4 Dismantling of pump on page 39 1, 2, 4, 5. Remove the packing and lantern ring
from the stuffing box. This method permits the inspection of the shaft sleeve and the stuffing box
bushing. If the shaft sleeves are found to be deeply grooved in the packing area, they should be
replaced as it is only possible for the packing to do an efficient job when the sleeve surface is rela­tively smooth.

32 3405-3406-3416 Installation, Operation and Maintenance Instructions

7.3 Sectional view

7.3 Sectional view

3405-3406-3416 Installation, Operation and Maintenance Instructions 33

7.3 Sectional view

34 3405-3406-3416 Installation, Operation and Maintenance Instructions

Construction details

Table 2: Group S

7.3 Sectional view

Weight - bronze fitted bare
pump

2x3-11

320 300 390 455 365 470

3x4-8G

3x4-8

3x4-8H

Casing thickness - volute 5/8" 5/8" 11/16" ¾" ¾" 11/16"

Pump

Casing thickness - side
walls

Max diameter spherical
solids

½" ½" 5/8" 5/8" 9/16"

¼" ½" 3/8" 3/16" ½" 5/8" 3/8"

Casing capacity - gallons 1.5 2 2.6 3.6 3.75 4.25

Stuffing box bore 2"

Stuffing box packing size 2-5/16"

Stuffing box

Stuffing box - no. of pack­ing rings

Width of lantern ring 3/8"

Shaft diameter at impeller 1-3/16"

Shaft diameter in shaft
sleeve

Shaft

Shaft diameter at coupling
end

Outside diameter of shaft
sleeve

Ball bearing - both ends 305-S

Max total working pres-

*1

sure

General

Max test pressure 375 PSI

Bearing centers 18-3/8"

Max shaft HP per 100
RPM

Max liquid temp without
cooling or quenching

Max liquid temp with
quenching gland

Temperature
limits

Max liquid temp with bear­ing cooling (Grease

*2

lube)

Max liquid temp with
quench gland and bearing
cooling (Grease lube)

*1

*2 Water cooled bearings available for model 3405 only.

Any part of which may be suction pressure.

3x4-12

3x4-12G

1-1/16"

15/16"

1-3/8"

250 PSI

2.57

180°F

250°F

250°F

350°F

5

3x4-14

4x6-8

4x6-8G

4x6-12

4x6-12G

3405-3406-3416 Installation, Operation and Maintenance Instructions 35

7.3 Sectional view

Table 3: Group M

Pump

Stuffing

box

Shaft

Gener-

al

Tem­pera-

ture

limits

Weight ­bronze fitted
bare pump

Casing thick­ness - volute

Casing thick­ness - side
walls

Max diameter
spherical sol­ids

Casing capaci­ty - gallons

Stuffing box
bore

Stuffing box
depth (to stuf

f­ing box bush­ing)

Stuffing box
packing size

Stuffing box ­no. of packing
rings

Width of lan­tern ring

Shaft diameter
at impeller

Shaft diameter
in shaft sleeve

Shaft diameter
at coupling end

Outside diame­ter of shaft
sleeve

Ball bearing ­both ends

Max total work­ing pressure

*1

Max test pres­sure

Bearing cen­ters

Max shaft HP
per 100 RPM

Max liquid
temp without
cooling or
quenching

3/4x17

4x6-11

4x6-14

4x6-17

4x6-17G

5x8-12DV5x8-14DV6x8-8

6x8-8G

6x8-12

6x8-12G

6x8-14

6x8-14G

6x8-17DV6x8-17GDV8x10-12DV8x10-12

650 640 660 720 680 750 585 725 795 895 905

¾" 5/8" ¼" ¾" 5/8"

3/8" 5/8" ¼" ¾" 5/8"

5/16"5/16"7/16"7/16"5/16"11/16"11/1

11/1
6"

11/1
6"

6

¾" 13/16" 7/8" 7/8" 7/8"

3/8" 11/16" ¾" ¾" ¾"

1" 3/4"

11/1
6"

5/8" ¾"

7/16
"

¾"

7/16
"

1"

3.9 5.0 5.3 5.4 8.3 8.5 7.6 9.1 9.4 11.6 16.5

2-1/2"

2/13/16"

3/8" x 3/8"

5

¾"

1-9/16"

1-7/16"

1-3/8"

1/3/4"

307-S

250 PSI

375 PSI

22-1/2"

9.7

180°F

G DV

11/1
6"

36 3405-3406-3416 Installation, Operation and Maintenance Instructions

3/4x17

4x6-11

4x6-14

4x6-17

4x6-17G

5x8-12DV5x8-14DV6x8-8

Max liquid
temp with
quenching
gland

Max liquid
temp with
bearing cooling

Grease lube)

*2

Max liquid
temp with
quench gland
and bearing
cooling
(Grease lube)

*1

*2 Water cooled bearings available for model 3405 only.

Any part of which may be suction pressure.

Table 4: Group L

6x8-8G

250°F

250°F

350°F

6x8-12

6x8-12G

6x8-14

7.3 Sectional view

6x8-14G

6x8-17DV6x8-17GDV8x10-12DV8x10-12

G DV

Pump

Stuffing
box

Shaft

6x8-22DV

8x10-14

8x10-14G

8x10-17

8x10-17G

10x12-12

Weight - bronze fitted
bare pump

Casing thickness ­volute

Casing thickness ­side walls

Max diameter spheri­cal solids

Casing capacity ­gallons

11/16" 7/8" 7/8" 7/8" 7/8" 1" 7/8" 15/16"

1-3/16
"

13/16" 1" 7/8" ¾" 7/8" 1-3/4" 1"

1285 1330 1300 1385 1555 1600 1620

¾" ¾" ¾" ¾" ¾" ¾" ¾"

21.0 19.5 24.9 25.0 29.3 33.0 35.5

Stuffing box bore 3-1/4"

Stuffing box depth (to

fing box bushing)

stuf

Stuffing box packing
size

Stuffing box - no. of
packing rings

3-1/8"

3x8' x 3/8"

6

Width of lantern ring 7/8"

Shaft diameter at im­peller

Shaft diameter in
shaft sleeve

Shaft diameter at
coupling end

2-3/16"

2-3/16"

1-15/16"

10x12-14

10x12-14G

1-11/1
6"

10x12-17

10x12-17G

¾" 1-1/4" 1-3/4"

12x14-12DV

12x14-14DV

3405-3406-3416 Installation, Operation and Maintenance Instructions 37

7.3 Sectional view

General

Tempera­ture limits

*1

*2 Water cooled bearings available for model 3405 only.

6x8-22DV

8x10-14

8x10-14G

8x10-17

8x10-17G

Outside diameter of
shaft sleeve

Ball bearing - both
ends

Max total working
pressure

*1

2-1/2"

310-S

250 PSI

Max test pressure 375 PSI

Bearing centers 28"

Max shaft HP per
100 RPM

Max liquid temp with­out cooling or

180°F

quenching

Max liquid temp with
quenching gland

250°F

Max liquid temp with
bearing cooling

Grease lube)

*2

250°F

Max liquid temp with
quench gland and
bearing cooling

350°F

(Grease lube)

Any part of which may be suction pressure.

10x12-12

27.1

10x12-14

10x12-14G

10x12-17

10x12-17G

12x14-12DV

12x14-14DV

Table 5: Typical bronze analysis

No. Cu. % Sn. % Pb. % Zn. % P. % Ni. %

1102 84-86 4-6 4-6 4-6 -- --

1103 87 6 4.5 1.75 .05-.15 0.75

1106 84 8 8 -- .10-.15 --

1109 88 8 .3 4 -- --

Symbol 1000 - cast iron - corresponds to ASTM A278-59T Class 25

Symbol 1003 - cast iron - corresponds to ASTM A278-59T Class 30

Table 6: Replacement snap rings (Part 361) (Waldes type 5102 or equal)

Group Ring No. Pliers No.

S 100 2, 22, 4, or 24

M 137 4 or 24

L 196 4, 24, 6, or 26

Table 7: Replacement grease and oil seals (Victor or equal)

Part No. Groups Group M Group L

332 H 60222 K 60454 K 60771

38 3405-3406-3416 Installation, Operation and Maintenance Instructions

Part No. Groups Group M Group L

332A H 60222 K 60454 K 60771

332B K3 64284 K3 63290 K 60810

333 H 60284 K 60478 K 60810

7.4 Dismantling of pump

The basic instructions are for a Model 3405 pump. Where dismantling of the Model 3406 or 3416 pumps
differ, the necessary supplementary instructions are included.

1. Drain liquid from pump.

2. Shut off and disconnect any auxiliary piping.

3. Disconnect coupling.

4. Remove gland assembly from stuffing boxes. See 7.2 Repacking stuffing boxes on page 31.

5. Jack and remove dowel pins from upper half casing by use of hex nut provided on top of pins. Re­move nuts from casing parting studs and loosen upper half casing (100) by screwing two bolts
(½"-13 threads) in holes provided in the flange. Lift off upper half casing, being careful not to injure
the parting gasket. Use the lugs provided for lifting the upper half casing. Do not use these lugs for
lifting entire pump.

6. Remove nuts from bearing cap studs and lift bearing cap (III) from unit.

NOTICE:

These caps must be replaced on the same end of pump from which they were removed.

They should be marked for identification before disassembly. The shims under the bearing caps
should be preserved and reused at reassembly
1/64" thick.

7. Carefully lift rotating assembly from unit and place on padded supports which will not injure the
shaft sleeves.

8. Note the distance from the end of the shaft to the face of the pump half coupling so that the cou­pling half can be correctly positioned when reassembled. Pull the coupling half from pump shaft.

9. Remove coupling key.

10. Remove cap screws on each end cover and remove end covers (109 and 119) from bearing hous­ing (134 or 166). Preserve end cover gaskets (360). On the Model 3406 and 3416 the constant lev­el oilers ( 251) must first be removed from both thrust and coupling end and the oil drained from the
bearing housings.

11. Remove snap ring (361) from shaft. Use No. 4 Waldes pliers. The Model 3416 has a shaft nut rath­er than a snap ring.

12. Remove ball bearings (112 and 137) from shaft seat by the use of a bearing puller. Details of a rec­ommended puller, capable of removing bearings from all three groups of pumps, are shown in Fig­ure 19. Care must be used. Puller bar must be square with shaft so that equal pressure is applied
evenly to the circumference of the outer race of the bearing. A steady pressure must be applied to
the puller screw.

7.4 Dismantling of pump

. If lost or damaged, they must be replaced by shims

3405-3406-3416 Installation, Operation and Maintenance Instructions 39

7.5 Reassembly of pump

Figure 14:

Never use hammer blows to drive shaft through bearings. Protect bearings from dirt or other con­tamination.

13.

Slide ball bearing collar (237 off of shaft) (122).

14. Slide bearing housings from shaft. Remove deflectors (123) from both ends of shaft. On the Model
3406, remove cap screws from bearing housing covers (160) on both bearing housings and lift out
oil rings (114). Preserve bearing housing cover gaskets (360A).

15. Slip casing wearing rings (103 or 127) from impeller and off rotating element.

16. Slide packing, lantern rings (105) and stuffing box bushings (125) off ends of shaft.

17. Smooth the exposed portions of the shaft at the ends of the sleeves with fine emery cloth so that
sleeves will not bind while being removed.

18. The shaft sleeve (1266) must be removed first. This is the sleeve with the spanner holes. Loosen
set screw in sleeve (if supplied) - previous design did not have set screws. Unscrew sleeve from
shaft with a pin spanner or a strap wrench. Shaft to sleeve threads are right hand. Do not use pipe
wrench. Never attempt to remove the sleeve (104) which has no spanner holes until impeller and
impeller key are removed from shaft.

19. Tap the impeller (101) from shaft with a lead mall. Tap evenly around the impeller as near as possi­ble to the shaft. Do not drive against the sealing surface on end of hub. Do not let the key "ride up"
on the exposed curved portion of the sled runner keyway.

Should the impeller key start to "ride" as the impeller is being removed, the key can be driven back
by a drift pin or piece of keystock a size smaller than the impeller key.

20. Remove key from keyway.

21. Unscrew and remove the remaining sleeve from shaft by hand or with a strap wrench. Shaft to
sleeve threads are right hand. This completes the disassembly of the pump.

7.5 Reassembly of pump

The following directions are for use when the pump is completely dismantled and it is desired to reas­semble. Figure 16: Left hand pump on page 42 and Figure 17: Right hand pump on page 43 illustrate
the steps described in the following. The basic instructions are for a Model 3405 pump. Where reassem­bly of the Model 3406 or 3416 pumps differ the necessary supplementary instructions are included.

1. Check shaft to see that it is not bent or otherwise damaged, and that it is also smooth and clean.
Inspect "O" Rings (412 and 412A). Replace if damaged. Position "O" Rings (412) inside shaft
sleeves as shown in the 7.3 Sectional view on page 33.

2. Determine the correct setting of the impeller and sleeves on the shaft in relation to the rotation of
the pump. To do this, face the discharge flange of pump. The locking shaft sleeve must be on the
right as shown in Figure 15: on page 41 and the impeller must rotate in correct relation to the cas­ing as shown in the end views in Figure 15: on page 41.

40 3405-3406-3416 Installation, Operation and Maintenance Instructions

7.5 Reassembly of pump

Figure 15:

3.

Mark the location of the keyway on the outside of both the impeller hub and the locking sleeve (104)
at points "A" and "B'' in Figure 16: Left hand pump on page 42 and Figure 17: Right hand pump

on page 43. These marks will be used later to indicate that the keyways are in line.

4. Assemble the shaft sleeve (104) that has a keyway in the threaded end but does not have spanner
wrench holes. Turn sleeve in a clockwise direction on shaft until the dimension from the threaded
end of the sleeve to the shaft shoulder at thrust bearing or outboard seat agrees with the dimension
on Figure 17: Right hand pump on page 43 for right hand or Figure 16: Left hand pump on page

42 for left hand rotation.

This dimension must be held as near as possible with the keyways in the shaft and sleeve in align­ment.

For the Model 3416 substitute the following B dimensions for those shown on Figure 16: Left hand

pump on page 42 and Figure 17: Right hand pump on page 43.

3405-3406-3416 Installation, Operation and Maintenance Instructions 41

7.5 Reassembly of pump

Figure 16: Left hand pump

42 3405-3406-3416 Installation, Operation and Maintenance Instructions

7.5 Reassembly of pump

Figure 17: Right hand pump

3405-3406-3416 Installation, Operation and Maintenance Instructions 43

7.5 Reassembly of pump

Group Left hand pump Figure 16:

hand pump on page 42

S 7-13/16" 9-13/16"

M 9-1/32" 12-17/32"

L 10-3/4" 16"

Left

Right hand pump Figure

17: Right hand pump on page 43

5. If it is necessary to replace the impeller wearing rings on pumps so equipped, proceed as follows:

Remove old rings. Rings are held by press fit and also by 3 set screws in edge of impeller

•
and ring.

• Clean wearing ring seats and press on new rings.

• Drill 3 holes ("F'' drill, 11/16" deep, 120° apart), so that holes are half in impeller and half in
ring. Tap holes (5/16"-18 tap, 3/8" deep). Screw set screws in hole, and lightly upset first
thread to keep screw from backing out.

• The impeller wearing rings are supplied 0.020-0.030 inch oversize on the O.D. They should
be turned to size after they are mounted on the impeller. Turning to size after mounting is
the procedure used in the factory, and has the following advantages:

• Eliminates possibility of runout.

• Eliminates distortion and expansion due to the press fit.

• Permits the user to compensate for wear of the casing wearing rings, so that the
casing wearing rings need not be replaced to restore original clearances.

• Permits the user to select a special clearance for unusual operating conditions.

The table of original clearances in section 7.7 Overhaul of pump on page 48 may be used as a
guide in setting the final dimension of the impeller rings. If rings are 300 series stainless steel, or if
extremely viscous liquids are being handled, the suggested clearance should be increased 0.005
inch.

6. Insert impeller key (178) in shaft keyway. Turn sleeve (104) about a quarter turn, either way, so that
key cannot enter keyway in this sleeve until after impeller is checked for correct setting in casing.

7. If the impeller diameter has been cut in the field, the impeller should be statically balanced and, if
possible, dynamically balanced. Balancing can be effected by grinding on the outside of the shrouds
near the periphery.

8. Place "O" Ring (412A) in groove in end of shaft sleeve (126). Screw shaft sleeve on shaft up to key.

NOTICE:

Model 3405 pumps were previously supplied without "O"-rings ( 412A) in the ends of the shaft
sleeves. On these pumps, coat the large ends of the shaft sleeves and the ends of the impeller
hub with plastic thread compound, gas oil a varnish, or white lead. Old and new style sleeves
are interchangeable. "O"'-rings (412) must be used between shaft sleeve and shaft whether
"O"- rings ( 412A) are used or not. (This applies to step 10 below also.)

9. Slide impeller on shaft and tap in place against the sleeve with a lead mall. Tap evenly around the

10.

11. Slip wearing rings (103 or 127) on impeller, being sure that the single lock on the upper half of ring

12. Place stuffing box bushings (125) on shaft and slide over shaft sleeves toward impeller. The single

13. If grease or oil seals (322, 333, 332A, or 332B) are being replaced, make sure that the seals are

14. Make sure that all parts that are assembled inside the bearing housings, including the shaft, snap

impeller near the wearing ring surface. Do not tap against the sealing surface on end of hub.
Place O-ring (412A) in groove in end of shaft sleeve (126). Screw shaft sleeve on shaft up to key.

is toward the center of the impeller.

lock on the upper half of bushings must be toward the outside, away from impeller.

installed so that the lips of the grease seals face outward, away from the bearings, and the lips of
the oil seals face inward, toward the bearings.

ring, bearing end covers, bearings and oil rings, are entirely free from dust and dirt.

44 3405-3406-3416 Installation, Operation and Maintenance Instructions

7.5 Reassembly of pump

This is extremely important, as the life of a ball bearing can be drastically reduced if contaminated
with even a small amount of dirt. All bearing assembly operations should be done in as dust-free an
atmosphere as possible. All tools, as well as the hands, should be kept clean.

If new ball bearings are being used, they should not be unwrapped until ready for installation and
should not be cleaned or washed unless the protective

wrapper has been broken and dirt allowed to enter the bearing.

If old bearings, or new ones that have been allowed to become dirty

, are being used, clean thor­oughly before installing as follows: Use a clean pail or receptacle. Pour into it one or two quarts of
clean, water-free kerosene. Dip the bearing into the kerosene and spin slowly. Repeat until all
traces of grease have been removed. Now blow dry with clean filtered compressed air, holding the
two races together so that they do not rotate but allowing the inner race to rotate a few turns now
and then to dislodge the kerosene from the retainer pockets. If the bearing is very dirty, it is advisa­ble to rinse it in a second bath of clean kerosene. When the bearing has been blown dry, oil it imme­diately with a good grade of clean machine oil; especially the race grooves and balls to prevent cor­rosion or rust.

15. Place deflectors (123) on shaft. On the Model 3406 - Wipe a small amount of grease on oil seal lips
(332B) and slide bearing housing covers (160) carefully over shaft and replace oil rings (114) on
shaft against bearing housing covers (160).

16. Wipe a small amount of grease on the grease seal lips in bearing housing (134 or 166). Place bear­ing housings on shaft and slide them along until they contact the shaft sleeves. Care must be taken
not to injure the lips of the grease seals during this operation. A thin piece of shim stock, wrapped
inside the grease seal before sliding over the shaft will protect the seal lips and can readily be re­moved after the seal is past the shaft shoulder.

17. Slide ball bearing collar (237) over thrust end of shaft (122) and push up against shaft shoulder.

18. The thrust and coupling end ball bearings are the same and can be installed on either end of shaft.
Both bearings are installed in a like manner as follows: Apply a film of oil to the bearing seat on the
shaft. Start bearing "square" and drive on about 1/8", keeping bearing square at all times. Use a
driving sleeve as shown in Figure 16: Left hand pump on page 42 and Figure 17: Right hand pump

on page 43. Note that the outside diameter of this sleeve should never be larger than the outside

diameter of the inner race of bearing. Next slip the bearing housing over the ball bearing toward the
end of the shaft to eliminate any possibility of binding between the outside of the bearing and the
bearing housing bore. Now continue to drive the bearing solidly against the shaft shoulder.

On the Model 3416 coupling end bearing is single row. Thrust bearing is a duplex bearing (two an­gular contact bearings, specially matched) and must be mounted in "back-to-back" position. This is
done on the bearing originally sent with the pump by having the stamped faces of the outer rings
against each other.

Both bearings are installed in same manner as the 3405.

Model 3416 uses the following bearings:

Group S Group M Group L

Coupling end 305S 307S 310S

Thrust end 7304PD-DB 7306PD-DB 7308PD-DB

19. Place snap ring (361) in groove in shaft on thrust bearing end. Be sure that groove is clean and that
snap ring seats in bottom of groove. Snap ring is flat on one side, tapered on other side. Flat side of
ring must be against bearing.

In the Model 3406 slide oil rings (1

14) toward bearing to the proper position in the bearing housings.
Bolt the bearing housing covers to the bearing housing, making sure that the oil breather fitting
(113A) in the bearing cover is up when the double locks of the bearing housing are in the lowermost
position. This fitting is used as a pressure release for the bearing housing. It must be in the vertical
position or the bearing will not be properly oiled. (Thrust end bearing end cover is not installed until
Step No. 22.)

3405-3406-3416 Installation, Operation and Maintenance Instructions 45

7.5 Reassembly of pump

20. Oil shaft extension and slide coupling end bearing end cover (119) with gasket (360) in place, being
careful not to injure grease seal (332). Turn end cover so that the small oil cup is in line horizontally
with center of shaft when the double lock of the bearing housing are in the lowermost position (see

Figure 16: Left hand pump on page 42 and Figure 17: Right hand pump on page 43. This oil cup is

used as a pressure relief for the bearing housing. It must be in the horizontal position to facilitate the
correct filling of the grease chamber. (Note that the location of this relief fitting is shown at the top in
the sectional assembly, Section 7.3 Sectional view on page 33, only to show construction details.)
Bolt the bearing end cover securely in place.

On the Model 3406 - Turn end cover so that oil drain notch is at the bottom when the double locks
of the bearing housing are in the lowermost position. This notch permits oil to drain from between
the bearing and the end cover, maintaining proper oil circulation.

On the Model 3416 turn the end cover so that the small oil cup is up when the double locks at the
bearing housing are in the lowermost position.

Be sure gasket (360) is in place. Bolt bearing end cover to bearing housing.

Install oil pipe (190) and constant level oiler (251) on the coupling end only. Be sure the oiler rests
on cap screw, which projects from casing as shown in Figure 4: on page 15.

21. Assemble the pump half coupling on Group "S" pumps as follows: Put oil or white lead on shaft ex­tension and in the coupling bore. Insert pump half coupling key in shaft. Place the complete pump
ha! coupling over end of shaft and align key with keyway. Place a solid object, such as a portion of a
2" diameter bar, against the end of the shaft opposite the coupling end and drive coupling half on
shaft with a lead mall.

NOTICE:

If a bearing puller
thrust bearing end to hold shaft when driving on coupling half. When using the puller for this
purpose, draw the puller screw up only finger tight so as not to injure snap ring. Locate the cou­pling half in the same location on shaft as it was when removed. Never drive the coupling on
shaft with the bearing end cover (109) in place as this may injure the ball bearing.

22. Assemble the pump half coupling on Groups "M" and "L" pumps as follows: Screw a 1/2" stud, ap-

23. Bolt the thrust end bearing end cover (109 or 190A) to the bearing housing. Be sure gasket (360) is

24. Smooth up and clean casing wearing ring, stuffing box bushing and bearing housing seats in upper

proximately 1¼" longer than the length of the coupling hub, into the end of the shaft. Insert the cou­pling key in shaft. Put oil or white lead on shaft and in the coupling bore. Place the complete pump
half coupling in position over the stud and align the key and keyway

Place washers over the stud against the coupling hub and pull coupling on with a nut placed on the
stud. Locate the coupling in the same location on the shaft as it was when removed.

in place. On Model 3405 pumps, be sure grease relief fitting is in a horizontal position as indicated
in 7.5 Reassembly of pump on page 40 Step 20. On Model 3406 pumps, be sure oil drain notch is
at bottom as indicated in 7.5 Reassembly of pump on page 40 Step 20A. Install oil pipe (190) and
constant level oiler (251) on thrust end. Be sure oiler piping rests on cap screw which projects from
casing as shown in Figure 4: on page 15.

and lower half casing. The casing and bearing caps are precision bored so that hand scraping and
fitting of the casing wearing rings, stuffing box bushings or bearing housings are not required.

Inspect parting gasket and if torn or otherwise damaged, cut a new gasket of 1/64" sheet asbestos
(Johns-Manville service sheet #60 or equivalent). The gasket should be removed while assembling
rotating element.

, similar to that shown in Figure 19 on page 46, is available, it can be used on

.

To cut a new gasket, lay the gasket sheet on the upper half casing parting flange, which will serve
as a template. Strike the sheet with a ball peen hammer. This will cut the gasket against the edges
of the casting, and around the parting stud holes. The gasket must cover the entire surface of the

46 3405-3406-3416 Installation, Operation and Maintenance Instructions

7.5 Reassembly of pump

parting flange, especially around the casing wearing ring locks, or internal leakage from high to low
pressure zones in the pump may occur.

Lower carefully the entire rotating element into the lower half casing. Be sure that the wearing ring,
stuffing box bushing and bearing housing "locks" line up with the recesses in the lower half casing.
The single "lock" on each of these parts must be on top so that when the upper half casing and the
bearing caps, having only one recess each, are bolted in place, these parts are locked against rota­tion.

With "locks" properly aligned, the rotating element should settle easily into place. If there is interfer­ence, the impeller may have to be tapped along the shaft until it lines up correctly. The sleeves may
have to be backed off to do this.

After the element has been properly seated in the lower half casing, tap impeller along shaft until
the shoulders on the impeller are in the center of the space between the two casing wearing rings
(103). In other words, dimension "C" and "D" Figure 16: Left hand pump on page 42 and Figure

17: Right hand pump on page 43 will be equal.

Now tighten shaft sleeve (104) against impeller until the marks which were made previously line up,
indicating that the keyways are in line. Check again the distance between the wearing rings and the
impeller shoulders. If rubbing occurs, turn the shaft sleeve (104) one complete turn ahead or back
as required.

With the locating marks together, tap the key (178) from the opposite end of impeller into the shaft
sleeve (104) until the end of the key is flush with the end of the impeller (on end opposite sleeve

104).

Tighten the shaft sleeve (126) securely against the impeller with a spanner or a strap wrench. Tight­en set screw in sleeve (126) (if supplied - previous design did not have set screw). Be sure fiber
insert is under set screw so that set screw will not burr shaft.

Check the rotating elements for free turning by rotating slowly in one direction and then the other.
The casing wearing rings and the stuffing box bushings should be seated in the lower half casing,
and should remain stationary when the shaft is rotated. If they ride on the impeller or sleeves, it may
indicate that the bearing housings, wearing rings or bushing surfaces in the lower half casing have
not been properly cleaned of scale or other foreign matter, or that there is too much eccentricity in
the element, due to a bent shaft or other causes. If any of the above are evident, correct the cause
and continue to assemble as follows.

25. Replace shims (1/64" thick) over bearing cap studs.

26. Assemble bearing caps (111) and tighten the nuts evenly, being sure that the bearing caps are re­placed on the same end from which they were removed.

27. Check again for free turning of the rotating element.

28. Place the parting gasket in position over the studs on the lower half casing with the edges flush with
the stuffing box bores and tight against the wearing rings and stuffing box bushings.

29. Be sure that the "locks" on the stuffing box bushing and wearing rings are in their correct position
with the single "lock" on top.

Lower carefully the upper half casing, which should settle into position without resistance and then
slip the dowel pins in place.

Check the rotating element for free turning and, if no binding is apparent, tighten casing parting nuts
alternately on each side of the pump starting from the center. The shaft should turn freely after all
nuts are tightened.

30. Repack stuffing boxes and replace gland assemblies as outlined in 3.3 Stuffing boxes on page 15.

31. Check coupling alignment as outlined in Alignment - initial. If the direction of rotation has been
changed, see 7.6 Changing rotation of pump in field on page 48.

32. Connect coupling as outlined in Connection of coupling.

33. Grease or oil pump bearings as outlined in 7.1 Lubrication - bearings on page 31.

34. Connect auxiliary piping, if used.

3405-3406-3416 Installation, Operation and Maintenance Instructions 47

7.6 Changing rotation of pump in field

35. Follow directions in 3 Preparation for operation on page 14 for initial operating condition and for
starting pump.

7.6 Changing rotation of pump in field

The rotation of these pumps can be changed without using additional parts. The following steps should
be followed:

1. Disassemble pump as outlined in 7.4 Dismantling of pump on page 39.

2. Loosen dowel pins, if used, in pump feet and remove hold down bolts. Lift lower half casing from
bed· plate.

3. Turn lower half casing 180° so that suction and discharge flanges are reversed from previous posi­tion or turn bedplate 180° and leave pump casing in original position. See Figure 17: Right hand

pump on page 43, showing right and left hand pump.

4. Replace lower half casing in this new position on bedplate and bolt in place. Do not dowel.

5. Reassemble pump as outlined in 7.5 Reassembly of pump on page 40.

6. Be sure that pump bearings are greased. See Section 7.1 Lubrication - bearings on page 31.

7. Check alignment as outlined in Alignment - initial.

8. Connect coupling as shown in Connection of coupling.

9. Follow directions in 4 Starting pump on page 21, for initial operating conditions and for starting
pump.

7.7 Overhaul of pump

The pump should be opened and the interior inspected for wear and excessive clearances approximately
once each year. The period, however, may vary, depending on operating conditions and severity of serv­ice. See 7.4 Dismantling of pump on page 39 for disassembly and Section 7.5 Reassembly of pump on

page 40, for reassembly of pump.

The following items should be checked:

1. Wearing Ring Clearance:

The original diametric clearance between the wearing rings and the impeller is .010" to .014".

The following is suggested as guide for allowable wear of wearing rings before replacement for 6"
pump and smaller:

• Pumps of 50 feet or less T.D.H. (total dynamic head) - .030" to .035" total diametric clear­ance.

• Pumps of between 51 and 100 feet T.D.H. - .025" to .030" total diametric clearance.

• Pumps of more than 100 feet T.D.H. - .020" to .025" total diametric clearance.

For 8" pumps or larger, the following is suggested:

• Pumps of 50 feet or less T.D.H. - .045" to V

• Pumps of between 51 and 100 feet T.D.H. - .035" to .040" total diametric clearance.

• Pumps of more than 100 feet T.D.H. - .025" to .030" total diametric clearance.

2. Fit of Impeller on Shaft:

These parts are machined for a push fit. (The shaft is made .000" to .0015" smaller than the im­peller hub bore) and the impeller should tap easily on the shaft. If the impeller does not tap on
readily, the bore and shaft should be inspected to see that they are free from foreign matter or
burrs. The fit of the key in the keyways should also be checked to see that it is not causing bind­ing. The key should have a sliding fit on the sides and should have .004" to .016" clearance at
the top.

3. Clearance Between Shaft Sleeve ( 104 or 126) and Stuffing Box Bushing (125):

48 3405-3406-3416 Installation, Operation and Maintenance Instructions

The original diametric clearance is .008" to .012". If this clearance has increased to more
than .030", the shaft sleeve, and at times, the stuffing box bushing should be replaced.

4. Condition of Shaft Sleeves:

If the outer surface of the shaft sleeve at the packing area is deeply grooved, the sleeve should
be replaced.

5. Condition of Shaft:

Check shaft for straightness. If bent, it should be straightened. If otherwise damaged, it should be
replaced.

6. Condition of Impeller:

Check the impeller and replace if any of the following conditions exist:

1. Excessive erosion, especially on the inlet of vanes.

2. Excessive wear on wearing ring surface.

7. Condition of Ball Bearings:

If the bearings are worn or damaged so that they have become loose or are noisy or rough when
rotated they should be replaced.

7.8 Emergency ball bearing replacement

If the thrust end ball bearing (112) has become worn and needs replacing and it is not desirable to over­haul the entire pump, the bearing can be replaced as follows:

NOTICE:

This cannot be done on the coupling end unless the pump or the driver is removed from the
bedplate.

1. On Model 3406 pumps, remove oil pipe (190) and constant level oiler from thrust end bearing
housing (134A). Drain oil from housing.

2.

Remove thrust bearing end cover (109 or 109A).

3. Remove snap ring (361).

4. Remove bearing cap (111).

5. Rotate bearing housing (134, 134A, or 166) 180° so that the two locks are on the top.

6. Remove ball bearing as directed in 7.4 Dismantling of pump on page 39 Steps 12 through 14.

7. Thoroughly flush bearing housing, bearing end cover, snap ring, ball bearing collar, and end of
shaft with clean kerosene. The slightest trace of dirt or grit may drastically reduce the life of a ball
bearing. Examine the ball bearing collar. If the edges of the collar are rounded over, or if the col­lar is otherwise damaged, replace the collar.

7.8 Emergency ball bearing replacement

Examine the shoulder on the shaft against which the ball bearing collar bears. Shoulder must be
square, and not rounded over.

8. Assemble new ball bearing as follows:

1. Wipe a small amount of grease on the grease seal lips in the bearing housing.

2. Place bearing housing on shaft, with the double locks up, and slide it along to approxi­mately its correct location.

3. Slide ball bearing collar (237) over shaft end and push up to shaft shoulder.

4. Apply a film of oil to the bearing seat on the shaft. Start bearing "square'' and tap on shaft
up to the shaft shoulder. Use a driving sleeve as shown in Figure 16: Left hand pump on

page 42 and Figure 17: Right hand pump on page 43.

3405-3406-3416 Installation, Operation and Maintenance Instructions 49

7.9 Spare parts

5. Place snap ring (361) in shaft groove. Be sure that the groove is clean and that the snap
ring seats properly.

6. Bolt bearing end cover (109 or 109A) to bearing housing. Be sure gasket (360) is in
place. Position end cover as directed in 7.5 Reassembly of pump on page 40 Step 20 so
that grease relief fitting or oil drain notch is in correct location.

7. Align locks on bearing end cover with the grooves in lower half casing and rotate bearing
end cover 180° so that the locks are at the bottom.

8. Assemble bearing cap (111) being sure that the 1/64" shims are in place, and that the
prick punch marks on the cap and the casing are on the same side. Now tighten the nuts
evenly.

9. Refill with grease or oil as outlined in 7.1 Lubrication - bearings on page 31.

7.9 Spare parts

To ensure against possible long and costly "down time" periods, especially on critical services, it is advis­able to have spare parts on hand.

1. The most desirable parts to have on hand are the following:

1. "Rotating element." This is a group of assembled parts, including bearing housings, bear­ings, bearing end covers, grease seals, wearing rings, stuffing box bushings and all rotat­ing parts, except coupling.

2. Stuffing box packing (106) - one set for two stuffing boxes.

3.
Stuffing box gland packing (210) - one set for four gland halves.

4. Stuffing box gland halves (107) - four required.

With these parts on hand, pump can be easily and quickly reconditioned by replacing the worn
parts.

2. An alternate, though not as desirable as that stated above, is to have on hand parts that are most
likely to wear and which can be used as needed.

Following is a list of these suggested parts:

1. Stuffing box packing (106) - one set for two stuffing boxes.

2. Stuffing box gland packing (210) one set for four gland halves.

3. Shaft sleeve (104 and 126) - one each.

4. Ball bearings (112 and 137) - two required (both bearings being the same).

5. Snap ring (361) - one required.

6. Wearing rings (103) - two required; or (127 and 142 - two of each.

7. Shaft (122) - one required.

8. Impeller key (178) - one required.

9. Stuffing box bushings (125) - two required.

10. Stuffing box gland halves (107) - four required.

11. Ball bearing collar (237) - one required.

3. If it is not convenient or desirable to carry the spare parts listed in items 1 or 2, the following list is
suggested as a minimum for servicing the pump under ordinary conditions of wear:

1. Stuffing box packing (106) - one set for two stuffing boxes.

2. Stuffing box gland packing (210) - one set for four gland halves.

3. Shaft sleeves ( 104 and 126) - one each.

4. Ball bearings (112 and 137) - two required (both bearings being the same).

5. Snap rings (361) - one required.

50 3405-3406-3416 Installation, Operation and Maintenance Instructions

6. Ball bearing collar (237) - one required.

7.10 Instructions for ordering spare parts

Repair orders will be handled with the minimum of delay if the following directions are followed:

1. Give the Model No., size of the pump and serial number. These can all be obtained from the
name plate.

2. Write plainly the names, part numbers and material of the parts required. These names and num­bers should agree with those on the sectional assembly (7.3 Sectional view on page 33.

3. Give the number of parts required.

4. Give complete shipping instructions.

7.10 Instructions for ordering spare parts

3405-3406-3416 Installation, Operation and Maintenance Instructions 51

7.10 Instructions for ordering spare parts

52 3405-3406-3416 Installation, Operation and Maintenance Instructions

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this document and more information:

www.gouldspumps.com

ITT - Goulds Pumps Vertical Products Operation
3951 Capitol Avenue
City of Industry

, CA 90601-1734

USA

Form IOM.3405-3406-3416.en-US.2022-04

©2022 ITT Corporation
The original instruction is in English. All non-English instructions are translations of the original instruction.