Flowserve SVCN 7 Owner's manual

VINTAGE PARTS MARKETING
PRODUCT LINE: SVCN7
HERITAGE COMPANY: Ingersoll
-
Dresser Pumps *
Pacific Pumps **
CONFIGURA
TION: Horizontal, End Suction
Single Stage, Overhung
API OH2
TYPICAL APPLICATION: API Process Pump for
Refinery, Petrochemical;
Chemical, Industrial
VINTAGE:
1991
-
1996 *
1989
-
1992 **
PRODUCT LIFESPAN:
API 610 8
th
Ed. *
(dated Aug 1995)
API 610 7
th
Ed.**
(
dated Feb 1989)
SUBJECT: Instruction, Operation and
Maintenance (IOM) Manual
Notes:
The SVCN7 design was the same for both
API
610 7
th
a
nd 8
th
Editions.
During 1993 IDP transitioned to the HPX.
NOTE: This information is intended for the use of Flowserve Employees.
The information provided is based on standard catalogue / price book
information. Details for specific units or serial numbers
may be different as
a result of non
-
standard construction, and parts, repairs and upgrades
provided by Flowserve or third parties.

SVCN 7 PUMP
INSTALLATION
OPERATION &
MAINTENANCE
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
TABLE OF CONTENTS
1. Introduction...............................................................................................................................1-1
1.1 Safety...................................................................................................................................1-1
1.2 Safety notices.......................................................................................................................1-1
1.3 Construction ........................................................................................................................1-2
1.3.1 Pump Case...................................................................................................................1-2
1.3.2 Bearing Housing..........................................................................................................1-2
1.3.3 Bearings.......................................................................................................................1-2
1.3.4 Bearing Lubrication.....................................................................................................1-3
1.3.5 Piping...........................................................................................................................1-3
1.3.6 Mechanical Seals and Packing ....................................................................................1-3
1.3.7 Head.............................................................................................................................1-3
1.3.8 Special Tools...............................................................................................................1-3
1.4 OPERATING PRINCIPLES...............................................................................................1-3
1.4.1 Energy Transfer...........................................................................................................1-3
1.4.2 Shaft Seals...................................................................................................................1-3
1.4.2.1 Mechanical Seal.......................................................................................................1-4
1.4.2.2 Packing....................................................................................................................1-4
1.4.3 Bearing Lubrication.....................................................................................................1-4
1.5 Receipt Inspection...............................................................................................................1-4
1.6 Lifting..................................................................................................................................1-5
1.6.1 Lifting Complete Unit .................................................................................................1-5
1.6.2 Lifting Driver...............................................................................................................1-5
1.6.3 Lifting Pump................................................................................................................1-5
1.7 Storage.................................................................................................................................1-6
1.7.1 Preparation For Storage...............................................................................................1-7
1.7.2 Storage Area................................................................................................................1-7
1.7.3 Inspection and Maintenance........................................................................................1-7
1.7.3.1 Six Months Prior to Installation ..............................................................................1-8
1.7.3.2 One Month Prior to Installation...............................................................................1-8
1.7.4 Painting and Preservation............................................................................................1-8
1.7.5 Associated Equipment.................................................................................................1-9
1.8 Preparation For Installation & Operation............................................................................1-9
2. Installation .................................................................................................................................2-1
2.1 Foundation and Piping.........................................................................................................2-1
2.1.1 Location.......................................................................................................................2-1
2.1.2 Piping...........................................................................................................................2-1
2.1.2.1 Suction Strainer.......................................................................................................2-1
2.1.2.2 Bypass Line.............................................................................................................2-2
2.1.3 Foundation...................................................................................................................2-2
2.1.4 Leveling the Baseplate ................................................................................................2-3
2.1.5 Grouting.......................................................................................................................2-5
2.2 Shaft Alignment...................................................................................................................2-5
2.2.1 Alignment Frequency..................................................................................................2-6
2.2.2 Alignment Preconditions.............................................................................................2-6
2.2.3 Setting Motor Shaft Endspace.....................................................................................2-6
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
2.2.4 Tapping Driver Mount Pads........................................................................................ 2-8
2.2.5 Cold Alignment........................................................................................................... 2-9
2.2.6 Hot Alignment........................................................................................................... 2-13
3. OPERATION ............................................................................................................................ 3-1
3.1 Technical Data .................................................................................................................... 3-1
3.1.1 Effects of Specific Gravity.......................................................................................... 3-1
3.1.2 Effects of Viscosity..................................................................................................... 3-1
3.1.3 Changing the Pump Speed.......................................................................................... 3-1
3.1.4 Net Positive Suction Head (NPSH)............................................................................. 3-1
3.1.5 Minimum Continuous Stable Flow............................................................................. 3-2
3.2 Control Notes...................................................................................................................... 3-3
3.2.1 Minimum Flow Control.............................................................................................. 3-3
3.2.2 Thermal Control.......................................................................................................... 3-3
3.2.3 Pressure and/or Flow Control ..................................................................................... 3-3
3.2.4 Continuous Bypass Control ........................................................................................ 3-3
3.2.4.1 Continuous Bypass Sizing for Parallel Units.......................................................... 3-3
3.3 Lubrication.......................................................................................................................... 3-4
3.3.1 Lubrication Specifications .......................................................................................... 3-5
3.3.1.1 Synthetic Lubricants ............................................................................................... 3-5
3.3.2 Bearing Housing Preparation...................................................................................... 3-6
3.3.3 Oiler Adjustment......................................................................................................... 3-6
3.3.4 Inspection.................................................................................................................... 3-6
3.3.5 Replenishment............................................................................................................. 3-7
3.3.6 Oil Change .................................................................................................................. 3-7
3.4 Pump Operation ..................................................................................................................3-7
3.4.1 Operating Precautions................................................................................................. 3-7
3.4.2 Pre-Operational Checks .............................................................................................. 3-7
3.4.3 Initial Start Up Procedure ........................................................................................... 3-8
3.4.4 Normal Start-Up.......................................................................................................... 3-9
3.4.5 Operating Checks...................................................................................................... 3-10
3.4.6 Securing the Pump.................................................................................................... 3-11
3.5 General Maintenance ........................................................................................................ 3-11
3.5.1 Routine Maintenance ................................................................................................ 3-11
3.5.2 TroubleShooting ....................................................................................................... 3-12
4. Maintenance.............................................................................................................................. 4-1
4.1 General................................................................................................................................ 4-1
4.2 Packing................................................................................................................................ 4-2
4.2.1 Packing Removal ........................................................................................................ 4-2
4.2.2 Packing Installation..................................................................................................... 4-2
4.3 Disassembly........................................................................................................................ 4-2
4.3.1 Head-Rotor Removal .................................................................................................. 4-2
4.3.2 Head Rotor Disassembly............................................................................................. 4-3
4.4 Inspection and Renewal of Parts......................................................................................... 4-5
4.4.1 Cleaning...................................................................................................................... 4-5
4.4.2 Inspection of Parts....................................................................................................... 4-5
4.4.3 Checking Shaft Straightness .......................................................................................4-6
4.4.4 Checking Fit Between Impeller Bore and Shaft.......................................................... 4-6
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
4.4.5 Checking Running Clearances.....................................................................................4-7
4.4.6 Replacing Stationary Wear Rings or Bushings ...........................................................4-7
4.4.7 Replacing Impeller Wear Rings ..................................................................................4-8
4.5 Assembly.............................................................................................................................4-9
4.5.1 Head-Rotor Assembly .................................................................................................4-9
4.5.2 Head-Rotor Installation .............................................................................................4-12
5. PARTS ORDERING AND SERVICING INFORMATION.................................................5-1
5.1 REGIONAL Sales OFFICES ..............................................................................................5-1
5.2 SERVICE Centers (North America)....................................................................................5-1
5.3 INTERNATIONAL OFFICES............................................................................................5-4
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
1. INTRODUCTION
This manual contains instructions for the installation, operation, and maintenance of your Flowserve
pump. The instructions are written for the use of personnel with a general training in the operation
and maintenance of centrifugal pumps.
Your pump has been designed to provide safe and reliable service. However, it is both a pressure
vessel and a piece of rotating machinery. Operators must exercise good judgment and observe correct
safety practices to avoid damage to the equipment and surroundings and to prevent personnel injury.
The pump has been designed for the pumping conditions specified in the customer’s order. Flowserve
must be consulted prior to any significant change of conditions.
1.1 SAFETY
It is assumed that your safety department has established a safety program based upon a thorough
analysis of the hazards associated with your industry. Your safety program must be reviewed to
ensure that it covers hazards associated with high speed rotating machinery before installing,
operating, or performing maintenance on the pump and associated components covered by this
manual. Correct installation and care of protective guards, shut down devices, and over pressure
protection equipment are essential to any safety program and must be included.
If applicable to your operating environment, your safety program must also cover hazards which arise
from the presence of electrical power, hot oil, high pressure and temperature liquids, toxic gases and
liquids, or flammable gases or liquids.
Also essential are special precautionary measures to prevent the possibility of applying power to the
equipment at any time when maintenance work is in progress. The prevention of rotation due to
reverse flow should not be overlooked.
In general, all personnel should be guided by all the basic rules of safety associated with the
equipment and the process.
1.2 SAFETY NOTICES
Throughout this manual, you will encounter the words WARNING, CAUTION, and NOTE. These
are intended to emphasize certain areas in the interest of operator safety and satisfactory pump
operation/maintenance. The importance of these words is as follows:
WARNING
A procedure, which, if not strictly observed, could result
in personnel injury or loss of life.
CAUTION
A procedure which, if not correctly followed, could result in
damage to, or destruction of, equipment.
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
NOTE
An operating procedure, condition, etc., which is essential to
highlight.
1.3 CONSTRUCTION
The SVCN 7 pump has these basic design features: it is centrifugal and single suction; it has a
cantilever rotor and a centerline-supported, radially split case which is either single- or double-
voluted. Its major components are case, head, rotor, ball bearings, bearing housing, and mechanical
seal or packing. The case houses the impeller, the head contains the packing gland with packing or
the seal parts, and the bearing housing supports both radial and thrust ball bearings. (The radial
bearing is on the impeller end of the rotor; the thrust bearing is on the coupling end). There are
renewable wearing rings on the impeller hub and skirt, in the head, and in the case; all are held in
place by either tack welds or set screws that are staked in place. Holes are drilled in the impeller for
balancing the hydraulic thrust load. Commonly a hook-type shaft sleeve prevents the packing or
mechanical seal from wearing into the shaft. Cartridge seals are also used.
The following paragraphs contain a brief description of each optional feature with an engineering
drawing reference that identifies its relevance to your pump. Some of the features are alterations of
basic components such as the case, the head, and the bearing housing.
1.3.1 PUMP CASE
Options in case design provide double-voluted construction for the case with a 4-in (100 mm)
discharge nozzle and larger and single-voluted construction for the case with a 3-in (75 mm) or
smaller, discharge nozzle. Vent, drain, and gauge connections are optional. Those incorporated in the
case are shown by the pump and motor driver OUTLINE drawing. Drains are drilled through the
inner volute of the double-volute pump. With any case design, all major parts of the pump can be
removed as a unit (once the coupling spacer is removed) without disturbing the position of the case,
the discharge and suction piping, or the driver.
1.3.2 BEARING HOUSING
An air cooled bearing housing that incorporates a fan on the radial end of the bearing housing is
standard on the SVCN 7 pump to expose more surface area to ambient air. This design improves heat
dissipation generated by the bearings. In some sizes, an additional fan to provide forced air
circulation is located at the bearing housing thrust end. SVCN 7 pumps with two fans are designated
as "fan cooled". SVCN 7 pumps are available with water cooled bearing housings. The water cooled
housing incorporates a sump cooling tube located in the bottom of the bearing housing. Water
continuously flows through this tube and removes bearing generated heat which is dissipated in a heat
exchanger or by some other means provided at the plant.
The bearing housing is drilled and tapped to provide for either pure mist or purge mist lubrication
connections. Threaded holes are provided in the bearing housing for viewing oiling rings and are
normally plugged with pipe plugs. These same holes may be used to connect a pure mist lubricating
system.
1.3.3 BEARINGS
The standard radial bearing is a single row, deep-groove (Conrad type) ball bearing. The standard
thrust bearing is a duplex, single-row, 40-degree angular contact type (7000 series), installed back to
DO2604-13 - 1-2 -

SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
back. A lock nut and washer are furnished with the thrust bearing. The radial bearing takes radial
loads. The thrust bearing takes both radial and thrust loads.
1.3.4 BEARING LUBRICATION
Ring oil with automatic oiler is the common method for lubricating bearings in the SVCN 7 pump.
Other methods are purge mist or pure mist. To determine the system (or method) that is applicable to
your pump, see the pump and motor OUTLINE drawing.
1.3.5 PIPING
Factory-installed piping can consist of cooling water piping or steam piping; flush piping for the
mechanical seal or packing; the specific piping configuration is depends on what the purchaser
ordered. If piping is installed on your pump, the PIPING drawings define the configuration.
1.3.6 MECHANICAL SEALS AND PACKING
The SVCN 7 pump is equipped with either packing and lantern ring, a single mechanical seal, double
mechanical seal, tandem mechanical seal, or a single mechanical seal with packing rings. As referred
to in this manual, the double mechanical seal consists of two single mechanical seals with their rotary
washers (or rings) back-to-back and the tandem mechanical seal consists of two single mechanical
seals with rotary rings and stationary seats in series; that is, ring-seat-ring-seat sequence. Hooked
shaft sleeves are used with both packing and the mechanical seal and can only be removed by
disassembling the pump. Cartridge seals may also used.
1.3.7 HEAD
The head on the SVCN 7 pump has a packing gland or a seal plate and it is installed from outside the
head. Only packing can be replaced without disassembling the pump. The head with packing gland
incorporates a passageway and tapped boss for piping a lubricant to the lantern ring. Where the head
accommodates a mechanical seal, no passageways or piping is installed unless specified by the
purchaser. To determine what is supplied with your pump see the pump ASSEMBLY and
MECHANICAL SEAL ASSEMBLY drawings.
1.3.8 SPECIAL TOOLS
Ordinarily, special tools are not required for maintenance of the SVCN 7 pump. Should a special tool
be required, it is described by a Flowserve engineering drawing. Its use would be covered in
supplementary instructions for performing the particular task for which it was designed.
1.4 OPERATING PRINCIPLES
1.4.1 ENERGY TRANSFER
The impeller is the means used to generate the head. As the liquid enters the eye of the impeller via
the suction nozzle, the rotation of the impeller gives the liquid energy, causing a flow from the eye of
the impeller to its outer edge. The greater part of the energy in the liquid as it leaves the impeller
appears as velocity head, which is converted into pressure head as it moves through the voluted
passage.
1.4.2 SHAFT SEALS
For the SVCN 7, the shaft seal is either a mechanical seal or packing rings.
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
1.4.2.1 Mechanical Seal
There are many variations of the mechanical seal: typically, it is a precision device in which the face
of a washer (or ring) that is retained to the shaft sleeve rotates against the face of a seat that is fixed to
the seal end plate or the head. The sealing faces are highly polished. Loading is accomplished by a
spring and hydraulic force pushing against the rotation washer. Some seals feature a rotating pumping
ring, which speeds up the flow of liquid past the sealing faces, allowing the use of smaller heat
exchangers for cooling the flushed liquid. To keep the mechanical seal at a nominal temperature,
either pumpage or liquid from an external source is constantly circulated around the component parts
while the pump is operating. Liquid from an external source flows into, and the heated (or flush)
liquid flows out of, the seal chamber via flush piping. Dissipation of the heat in the flush liquid is
sometimes accomplished by means of a heat exchanger, depending on the plant system.
1.4.2.2 Packing
A packing gland and packing box bushing retain the packing rings which are installed around the
shaft sleeve. Even compression of the rings, staggered cuts, and a slight amount of packing leakage is
required for satisfactory service; otherwise friction and heat will likely destroy the packing.
Flowserve prefers to use a lantern ring with packing in order to circulate liquid from an external
source around the packing, removing some of the packing-generated heat. The packing box bushing is
usually pressed into the head from the outside but it may be designed for installation from the inside.
In either event, it is tack welded or secured with set screws which are staked.
1.4.3 BEARING LUBRICATION
The automatic oiler on the side of the housing maintains the oil level below the lowest balls of the
bearings. The basic system is supplemented by oiling rings that turn with the pump shaft, splashing
oil on unsubmerged balls. The purge mist, if installed, is blown into the housing from the plant's
system. When the bearings are lubricated by a pure mist, ring oil is not used; the bearings are
lubricated solely by droplets of oil in the mist.
1.5 RECEIPT INSPECTION
Your pump was carefully checked at the factory prior to shipment to ensure compliance with the
requirements of your order. It is suggested that the pump be inspected upon arrival. As a minimum,
the following items should be checked:
1. Inspect the shipping containers for damage or moisture. The condition of the skid and covering is
indicative as to the way the shipment was handled. Broken skids, torn coverings, bend hold-down
bolts, broken straps, etc., indicate rough handling.
2. Remove the shipping enclosure and visually inspect all pump components for damage.
3. Inspect the preservative coating on various parts. If necessary, renew preservative in areas where
it has been rubbed or scraped.
4. Inspect all painted surfaces. If necessary, touch up the areas where paint has been chipped or
scraped.
5. Inspect all covers over pump openings and piping connections. If covers or seals for the covers
are damaged or loose, they are to be removed, and a visual inspection made of the accessible
interior areas for accumulation of foreign materials or water. If necessary, clean and preserve the
interior parts as noted above to restore the parts to the as-shipped condition. Install or replace
covers and fasten securely.
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
6. The shipping papers should be checked to determine satisfactory arrival of any special tools,
loose parts, and/or spare parts (if provided), which are usually preserved and packed in a box
attached to the skid.
If any damage is indicated and/or parts are missing, notify the carrier and the nearest Flowserve office
immediately.
Upon conclusion of the receipt inspection, the shipping enclosure should be resealed for storage or
transport.
1.6 LIFTING
WARNING
Make sure that any equipment used to lift the pump or
any of its components is capable of supporting the
weights encountered. Make sure that all parts are
correctly rigged before attempting to lift.
1.6.1 LIFTING COMPLETE UNIT
WARNING
Do not lift the complete unit by slinging from pump case
and/or eye bolt on motor.
The coupling spacer must be removed from between
pump and driver half couplings before lifting the
complete unit.
To lift the pump and baseplate without the driver or the
baseplate alone, sling from all four eye bolts.
The pump, driver and baseplate can be lifted as a complete unit. Sling from all four eye bolts
provided on baseplate side rails. Failure to use all four could result in permanent distortion of the
baseplate. Use as long a sling as possible, or use a spreader arrangement. See Figure 1-1 below.
1.6.2 LIFTING DRIVER
Refer to driver manufacturer’s instructions.
1.6.3 LIFTING PUMP
CAUTION
To avoid shaft distortion, never lift the pump by the shaft.
Rig lifting straps at coupling end of bearing housing and at stuffing box extension. Make sure straps
are adjusted to obtain an even lift. See Figure 1-2 below.
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
Figure 1-1 Lifting Complete Unit
Figure 1-2 Lifting Pump
1.7 STORAGE
NOTE
Unless otherwise agreed, full responsibility and cost
associated with the storage and inspection of this equipment
rests with the purchaser.
During extended periods of storage prior to installation, precautions must be taken to protect the
pump from deterioration. The various parts of the pump are protected prior to shipment by applying
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
varying grades of preservative to the parts. However, during shipment and handling the preservatives
are subjected to conditions that can cause their removal. Also, during extended periods of time the
preservatives may deteriorate. The listed procedures should be followed to prevent deterioration of
the pump during the extended storage period. These procedures may also be supplemented by the
experience of the person performing the tasks.
1.7.1 PREPARATION FOR STORAGE
Inspect the preservative coating on the various parts. If necessary, renew the preservative in areas
where it has been rubbed or scraped off. Internal parts of the pump are protected with a petroleum-
based rust preventative. External surfaces of parts that are required to be kept free of paint are coated
with a petroleum-based rust preventative.
Inspect all painted surfaces. If necessary, touch-up areas where paint has been chipped or scraped.
External surfaces are usually painted with a paint that combines a primer with a finish coat. See the
contract specification for any non-standard paint requirements, or contact your nearest Flowserve
office.
Inspect all covers over pump openings and piping connections. If the covers or seals for the covers
are loose or damaged, remove them and visually inspect the accessible interior areas for accumulation
of foreign matter and/or water. If necessary, clean and recoat the interior parts with preservative
and/or paint to restore the parts to the as-shipped condition. Install or replace the covers and fasten
securely.
If the pump was shipped in a sealed plastic covering, then the covering should be reinstalled prior to
placing the pump in storage.
1.7.2 STORAGE AREA
If at all possible, the pump and its component parts should be stored indoors where they will be
protected from the elements. In no case should any pump element be subjected to extended periods of
submergence or wetting prior to start up. If it is not possible to store the pump and its components
indoors, precautions must be taken to protect them from the elements. Regardless of whether storage
is indoors or outside, the storage area should be vibration free. All boxes marked for indoor storage
must be stored indoors. When stored outdoors the pump and its components should be protected from
dirt, dust, rain, snow, or other unfavorable conditions by heavy plastic sheets, canvas, waterproof
burlap or other suitable coverings.
All equipment must be placed upon skids or blocks to prevent contact with the ground and surface
contaminants. Equipment must be adequately supported to prevent distortion and bending.
When selecting a storage area, it should be taken into consideration that the deterioration of the
equipment and the expenses involved in restoring the equipment at the time of installation will be
proportionate to the class of storage provided.
1.7.3 INSPECTION AND MAINTENANCE
The responsibility for setting up an inspection schedule rests with the purchaser and will be
dependent upon the class of storage provided. Initially, inspection would occur weekly. Then,
depending upon the conditions encountered in the inspection reports, inspection should continue
weekly, monthly, or quarterly.
Each inspection should include the following steps, as a minimum:
1. Check that the pump supports are firmly in place.
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
2. Ensure that the nozzle coverings are firmly in place. Periodically (i.e., every third inspection)
remove covers and visually inspect the accessible interior areas. If surface rusting has
occurred, clean and repaint or recoat with preservatives. Replace covers.
3. Check that the pump covering (i.e., plastic or tarps) is firmly in place. Any holes or tears must
be repaired to prevent entrance of dirt or water.
4. Check for any corrosion of the exterior surfaces. If rusting has occurred, clean and repaint or
recoat with preservative.
5. Loosen case drain plugs to allow seepage of any accumulated moisture.
6. Inspect individually wrapped parts for signs of deterioration. If necessary, renew preservative
and/or wrapping.
7. Document the results of the inspection and keep on file for later review.
1.7.3.1 Six Months Prior to Installation
Six months prior to the scheduled installation date, a Flowserve service representative is to be
employed to conduct an inspection of the stored equipment. This inspection should include, as a
minimum:
1. A review of all the inspection documentation for the stored equipment as kept on file by the
owner.
2. An inspection of the storage area to determine the as-stored condition of the equipment prior
to the removal of any protective coverings.
3. An inspection of the equipment with the protective coverings removed.
4. A partial or complete dismantling of the equipment may be required, depending on the length
of storage, the class/type of storage provided, and the results of steps 1 through 3 above.
5. Restoration of painted or preserved surfaces, and/or replacement of gaskets, O-rings, packing
or mechanical seals, and bearings.
Upon completion of the inspection the Flowserve representative shall submit a report to the
purchaser, and to the FLOWSERVE Manager of Customer Service, stating in detail the results of the
inspection.
1.7.3.2 One Month Prior to Installation
One month prior to installation of the equipment, a Flowserve representative is to be employed to
conduct a final inspection. This inspection will be made to ensure that the requirements of the six-
month inspection report were satisfactorily completed and that the equipment is ready for installation.
Upon completion of this inspection the Flowserve representative shall submit a final report to the
purchaser, and to the FLOWSERVE Manager of Customer Service, advising them of the results of
the final inspection.
1.7.4 PAINTING AND PRESERVATION
Paints and preservatives used are either Flowserve standard or as required by the contract
specification. Refer to your branch office through which the order was placed or Flowserve for the
description of paints and preservatives used on this order.
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
1.7.5 ASSOCIATED EQUIPMENT
For motors, turbines, gears, or any other equipment supplied by Flowserve with your pump, see the
specific storage requirements in the manufacturer’s manual in the back of this manual.
1.8 PREPARATION FOR INSTALLATION & OPERATION
WARNING
Fumes from alcohol, acetone, petroleum solvents and
other such chemicals are injurious to health and may
ignite from a spark. Ensure that the area where they are
used is well ventilated and has a fire extinguisher nearby.
After the equipment has been inspected and unpacked after receipt or storage, the pump surfaces must
be cleaned and prepared for operation before installing the pump.
Internal and unpainted external surfaces of the pump (as well as items ordered separately) are
protected with a petroleum-based rust preventative. This can be removed by wiping or flushing with a
petroleum-based solvent.
Any painted surfaces that have been scratched or chipped should be touched-up with the appropriate
paint.
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
2. INSTALLATION
2.1 FOUNDATION AND PIPING
2.1.1 LOCATION
The unit should be installed close to the source of the liquid to be pumped. The location must also
allow adequate space for operation as well as for maintenance operations involving dismantling and
inspection of parts. Head room is an important consideration because an overhead lift of some type is
required for assembly and disassembly of the pump.
2.1.2 PIPING
These units are furnished for a particular service condition. Changes in the hydraulic system may
affect performance adversely. This is especially true if the changes reduce the pressure at the suction
or if the liquid temperature is increased. When installing piping, Flowserve recommends:
1. that as the line is erected, a swab fitting the entire cross section of the pipe be pulled through
each section to assure the removal of scale or other foreign material;
2. that suction and discharge piping should be of ample size, be installed in direct runs, and have
a minimum of bends;
3. that a suction pipe equal to or one size larger than the pump suction nozzle is used;
4. that there is a straight length of pipe (approx. 8 to 10 times the pipe diameter) just upstream
of suction nozzle (No double turns);
5. that the piping slopes in the correct direction;
6. that no high spots or pockets are present in which air or vapor can collect;
7. that piping supports, valves, and fittings are properly located, and all eccentric reducers or
increasers are properly installed;
8. that the piping is installed to avoid excessive loads on the pump nozzles from poor alignment
of piping or improper location of piping anchors;
9. that a check valve and a gate valve be installed in the discharge pipe of the pump. When the
pump is stopped, the check valve will protect the pump against excessive pressure and will
prevent the pump from running backward. The check valve should be installed between the
gate valve and the pump nozzle in order to permit its inspection.
10. that a spool piece is installed in the suction line so that the suction strainer may be installed
and removed with a pressure gauge between the strainer and pump.
2.1.2.1 Suction Strainer
In a new installation, great care should be taken to prevent dirt, scale, welding beads and other items
from entering the pump, as it is particularly important to protect the numerous close running fits from
abrasive matter present in new piping
The suction system should be thoroughly flushed before installing the suction strainer and connecting
the suction piping to the pump.
The suction strainer should be installed between 5 to 20 pipe diameters upstream from the pump
suction flange.
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
The Flowserve standard for suction strainers consists of a conical shaped steel plate. The plate has
1/16” perforations and is of sufficient size and thickness for the required flow. The open area of the
strainer should have a minimum of a 3 to 1 ratio to the area of the pump suction (see Figure 2-1
Typical Suction Strainer below).
Preferred Direction
of Flow
Cone T
yp
e Strainer
Figure 2-1 Typical Suction Strainer
Pressure gauges should be installed on both sides of the screen so that the pressure drop across the
screen can be measured.
When the unit is being started, the gauges on each side of the screen should be carefully watched. An
increase in the differential pressure between the two gauges indicates that the screen is becoming
clogged with dirt and scale. At this point, the pump should be shut down, and the screen cleaned
and/or replaced.
2.1.2.2 Bypass Line
Operation at low flows results in pump horsepower heating the liquid. A bypass may be required to
prevent vaporization and subsequent pump damage. Refer to your local Flowserve office to determine
if a bypass is required. Mechanical damage may result from continuous operation at flows less than
specified.
2.1.3 FOUNDATION
The foundation should be sufficiently rigid and substantial to prevent any pump vibration and to
permanently support the baseplate at all points. The most satisfactory foundations are made of
reinforced concrete. These should be poured well in advance of the installation to allow sufficient
time for drying and curing. A rough finish top surface is best when applying grout.
The General Arrangement Drawing (In the back of this manual) will furnish anchor bolt locations,
size of bolts, etc. See Figure 2-2 below.
Figure 2-3 below illustrates the recommended foundation bolt arrangement. Notice the large washer
with lugs at the bottom. It should be welded to the bolt and pipe sleeve to prevent turning.
Allow a little more than the specified threaded bolt length above the rail of the baseplate. The excess
can always be cut off if it is not needed.
DO2604-13 - 2-2 -

SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
Washe
r
Pi
p
e
Bolt
A
llow bolts to project fo
r
grouting under baseplate
Make this distance equal
to flange on baseplate
Figure 2-2 Foundation Bolt Template
A
llow ample threaded bolt
length above rough concrete
Stuff waste around bolt
while pouring concrete
Pipe sleeve to be three
times the diameter of
the anchor bolt
Weld a large washer with
lugs to the bottom of the
bolt and pipe sleeve to
prevent turning
Rough finish
concrete for grout
Figure 2-3 Foundation Bolt
2.1.4 LEVELING THE BASEPLATE
Before putting the unit on the foundation, thoroughly clean the top of the foundation. Break off any
loose pieces of cement and roughen the top with a chisel to afford a good hold for grout.
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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
Prepare sufficient steel blocks of at least 1 in. (25 mm) thickness to be placed below each baseplate
jacking screw furnished with the baseplate. The purpose of the plate is to spread the load of the screw
without crushing the concrete below, and to provide a minimum of 1 in. (25 mm) grouting space
below the baseplate.
Before leveling the baseplate, loosen the pump hold down bolts to eliminate any baseplate distortion.
The baseplate may be leveled using either the installed jacking screws, or using shims, or wedges as
illustrated in Figure 2-4 below.
Figure 2-4 Leveling Baseplate With Wedges
Level the baseplate by using a machinist’s level on the machined surfaces of the pump and driver
pads. Adjust the baseplate level by adjusting the leveling screws, or by adjusting the shim packs
under the baseplate.
To adjust the shim pack thickness, carefully raise the baseplate by using either the baseplate jacking
screws provided or by levering with a suitable pinch bar or by installing a low level hydraulic jack.
Adjust the shim pack thickness and lower the baseplate.
Repeat this procedure in a logical manner at each bolt position until the baseplate is level. The
baseplate must be level within 0.002 in. per ft. (0.17 mm per m).
When the baseplate is level, pull down the foundation bolts so they are snug. This may disturb the
baseplate, so re-check the levels.
CAUTION
Before grouting, perform a rough shaft alignment. Final
alignment will not be possible if this initial shaft alignment
is not satisfactorily completed prior to grouting the
baseplate.
DO2604-13 - 2-4 -

SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
2.1.5 GROUTING
NOTE
The foundation must be allowed to cure for at least 7 days
before grouting the baseplate.
Build a dam around the foundation as shown in Figure 2-5 after leveling the baseplate. If wedges
were used to level the baseplate, it is a matter of local policy whether the wedges should be removed
after grouting. If you wish to remove the wedges, carefully mark their locations before pouring grout.
Finished Grout
Leave top of foundation rough,
do not finish with trowel.
Dam Concrete
Grouting 1 to 2
inches dee
p
Figure 2-5 Grouting Baseplate
Use a good, high strength, non-shrink grout mix and install in accordance with the manufacturer’s
instructions.
Holes are provided in the baseplate to permit pouring the grout and to act as air vents. Fill under the
baseplate completely, stirring to assure correct distribution of the grout. Check to see that the grout
flows under the edges of the baseplate evenly. Make sure the baseplate is vented correctly and all
areas are thoroughly filled to prevent any resonant problems. Pour grout until level reaches top of
dam. Allow to dry sufficiently to prevent grout from overflowing while completing the remaining
grouting.
NOTE
Do not vibrate baseplate when grouting.
When the grout is thoroughly hardened, remove the dam. If the leveling wedges are removed, fill the
holes they leave with grout.
2.2 SHAFT ALIGNMENT
Shaft alignment is critical to good performance of your pump. Should you require assistance with
alignment of your pump and driver contact Flowserve for a service representative.
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