FPS FSD Series User manual

franklinwater.com
ENGLISHEN
FSD SERIES
Installation, Operation, and Maintenance Manual
ANSI Process Pumps

2
Table of Contents
4...............SAFETY CONSIDERATIONS
5...............PUMP IDENTIFICATION
5...............MANUFACTURER
5...............TYPE OF PUMP
5...............DATE OF MANUFACTURE
5...............INSTALLATION, OPERATION & MAINTENANCE MANUAL IDENTIFICATION
5............... WARRANTY
5...............GENERAL INSTRUCTIONS
6...............HANDLING AND TRANSPORT
6...............METHOD OF TRANSPORT
7...............SAFETY CONSIDERATIONS
9...............STORAGE
10 ...............INSTALLATION & ALIGNMENT
10 ...............PREPARATION
10 ...............PUMP LOCATION
10 ...............FOUNDATION
10 ...............FACTORY PRELIMINARY ALIGNMENT PROCEDURE
10 ...............RECOMMENDED PROCEDURE FOR BASE PLATE INSTALLATION & FINAL FIELD ALIGNMENT
12 ...............PIPING CONNECTION – SUCTION & DISCHARGE
13 ...............SUCTION PIPING
14 ...............DISCHARGE PIPING
14 ...............PUMP AND SHAFT ALIGNMENT CHECK
14 ...............MECHANICAL SEAL
14 ...............PACKING
15 ...............PIPING CONNECTION – SEAL/PACKING SUPPORT SYSTEM
15 ...............PIPING CONNECTION – BEARING HOUSING COOLING SYSTEM
16 ...............PIPING CONNECTION – SUPPORT LEG COOLING FOR CENTERLINE MOUNTING OPTION
16 ...............PIPING CONNECTION – HEATING/COOLING FLUID FOR JACKETED COVER/CASING
16 ...............PIPING CONNECTION – OIL MIST LUBRICATION SYSTEM
16 ...............BEARING LUBRICATION
17 ...............COUPLING
17 ...............PUMP OPERATION
17 ...............ROTATION CHECK
17 ...............PRE START-UP CHECKS
18 ...............PRIMING
18 ...............ENSURING PROPER NPSHA
18 ...............MINIMUM FLOW
18 ...............STARTING THE PUMP AND ADJUSTING FLOW
19 ...............OPERATION IN SUB-FREEZING CONDITIONS
19 ...............SHUTDOWN CONSIDERATIONS
19 ...............TROUBLESHOOTING
25 ...............MAINTENANCE
25 ...............PREVENTIVE MAINTENANCE
25 ...............NEED FOR MAINTENANCE RECORDS

3
25 ...............NEED FOR CLEANLINESS
25 ...............MAINTENANCE OF PUMP DUE TO FLOOD DAMAGE
26 ...............DISASSEMBLY
26 ...............FSD MODELS
27 ...............CLEANING/INSPECTION
27 ...............ASSEMBLY
28 ...............FSD POWER FRAME ASSEMBLY
29 ...............BEARING INSTALLATION
31 ...............FSD WET END ASSEMBLY
32 ...............BEARING LUBRICATION
33 ...............REINSTALLATION
34 ...............SPARE PARTS
34 ...............RECOMMENDED SPARE PARTS – STANDARD FSD PUMP
34 ...............APPENDIX A
34 ...............CRITICAL MEASUREMENTS AND TOLERANCES FOR MAXIMIZING MTBPM
36 ...............SPECIAL PARAMETERS CHECKED
36 ............... APPENDIX B
37 ...............APPENDIX C
39 ...............APPENDIX D
40 ............... APPENDIX E
40 ...............INSTALLATION/CLEARANCE SETTING FOR FRONT VANE SEMI-OPEN IMPELLER
41 ...............APPENDIX F
41 ...............REMOVAL/INSTALLATION OF SEALS WITH FMI SEAL CHAMBER
42 ...............APPENDIX G

4
SAFETY CONSIDERATIONS
The FSD Series ANSI Process pumps have been designed and manufac-
tured for safe operation. In order to ensure safe operation, it is very
important that this manual be read in its entirety prior to installing or
operating the system. Franklin Electric shall not be liable for physical
injury, damage or delays caused by a failure to observe the instruc-
tions for installation, operation and maintenance contained in this
manual.
Remember that every pump has the potential to be dangerous, be-
cause of the following factors:
• Parts are rotating at high speeds
• High pressures may be present
• High temperatures may be present
• Highly corrosive and/or toxic chemicals may be present
Paying constant attention to safety is always extremely important.
However, there are often situations that require special attention.
These situations are indicated throughout this book by the following
symbols:
Maximum Lifting Speed: 15 feet/second.
If in a climate where the fluid in the system could freeze, never leave
liquid in the booster system. Drain the system completely. During
winter months and cold weather, the liquid could freeze and damage
the system components. Always remember to drain the casing as-
semblies complete.
Do not run the equipment dry or start the pump without the proper
prime (flooded system). Significant damage can occur to the unit if
even run for a short time period without a fully filled casing assembly.
Never operate the pump(s) for more than a short interval with the
discharge valve closed. The length of the interval depends on several
factors including the nature of the fluid pumped and it’s temperature.
Contact Technical Support for additional support if required.
Never operate the system with a closed suction valve.
Excessive pump noise or vibration may indicate a dangerous operating
condition. The pump must be shutdown immediately.
Do not operate the pump and/or the system for an extended period of
time below the recommended minimum flow.
It is absolutely essential that the rotation of the motor be checked
before starting any pump in the system. Incorrect rotation of the
pump(s) for even a short period of time can cause severe damage to
the pumping assembly.
If the liquid is hazardous, take all necessary precautions to avoid dam-
age and injury before emptying the pump casing.
Residual liquid may be found in the pump casing, suction and
discharge manifolds. Take the necessary precautions if the liquid is
hazardous, flammable, corrosive, poisonous, infected, etc.
Always lockout power to the driver before performing pump mainte-
nance.
Never operate the pump without the coupling guard (if supplied) and
all other safety devices correctly installed.
Do not apply heat to disassemble the pump or to remove the impeller.
Entrapped liquid could cause an explosion.
If any external leaks are found while pumping hazardous product, im-
mediately stop operations and repair.
DANGER - Immediate hazards which WILL result in severe personal
injury or death.
WARNING – Hazards or unsafe practices which COULD result in severe
personal injury or death.
CAUTION – Hazards or unsafe practices which COULD result in minor
personal injury or product or property damage.

5
PUMP IDENTIFICATION
MANUFACTURER
Franklin Electric
125 Morrison Drive
Rossville, TN 38066
United States of America
TYPE OF PUMP
FSD ANSI Process end suction pumps are a horizontal, single suction,
single stage centrifugal pump.
DATE OF MANUFACTURE
The date of manufacture is indicated on the pump data plate.
INSTALLATION, OPERATION & MAINTENANCE
MANUAL IDENTIFICATION
Prepared: January 1, 2018 Edition: 01
Revision: Date of Revision:
NAMEPLATE INFORMATION
WARRANTY
This product is covered by a Limited Warranty for a period of 12
months from the date of original purchase by the consumer. For
complete warranty information, refer to www.franklinwater.com; or,
contact Technical Support for a printed copy.
Phone: [phone]
Fax: [phone]
GENERAL INSTRUCTIONS
The pump and motor unit must be examined upon arrival to ascer-
tain any damage caused during shipment. If damaged immediately
notify the carrier and/or the sender. Check that the goods correspond
exactly to the description on the shipping documents and report any
dierences as soon as possible to the sender. Always quote the pump
type and serial number stamped on the data plate.
The pumps must be used only for applications for which the manufac-
turers have specified:
• The construction materials
• The operating conditions (flow, pressure, temperature,
etc.)
• The field of application
In case of doubt, contact Technical Support.
Upon receipt of the pump, a visual check should be made to deter-
mine if any damage has been incurred during transit or shipment. The
main areas to diligently inspect are:
• Broken or cracked castings, including the base, motor,
pump feet and suction and discharge flanges
• Bent or damaged shafts
• Broken motor end bells, bent lifting eye bolts or damaged
conduit boxes on the driver
• Missing parts
Parts and/or accessories are sometimes wrapped individually or fas-
tened to the equipment. Coupling hubs are shipped in separate boxes.
If any damage or loss has been incurred, promptly contact Technical
Support and the freight company that delivered the equipment.
FIGURE 1 – Pump Data Plate
MODEL : Pump model designation
S/N : Pump Serial Number
PEICL : Pump Energy Index
P/N : Pump Part Number
SIZE : Discharge x Suction - # of Stages
GPM : Pump Rated Capacity
RPM : Pump Rated Speed
TDH : Pump Rated Total Dynamic Head
BHP : Pump Max HP
IMP DIA. : Impeller Trim Diameter

6
HANDLING AND TRANSPORT
METHOD OF TRANSPORT
The pump must be transported in the horizontal position
INSTALLATION
During installation and maintenance, all components must be handled
and transported securely by using suitable slings. Handling must be
carried out by specialized personnel to avoid damage to the pump
and persons. The lifting rings attached to various components should
be used exclusively to lift the components for which they have been
supplied.
For complete base mounted assemblies, NEVER lift on the pump or
motor. Always lift equally at the four corners of the base assembly.
If job site conditions permit, you may be able to install directly from
the truck that delivered the pump. If not, move the components to the
installation area and lay them out in a clean and protected space con-
venient to the work location. Column pipe sections should be placed
on suitable timbers to keep them out of the dirt, arranged so that the
coupling ends point toward the wellhead. The motor assembly should
be left on the skids until lifted for installation. The power cable and
motor leads must receive special protection to avoid damage to the
jacket or insulation.
If installation cannot begin within a few days after delivery, segre-
gate and identify all components of the shipment so they won’t be
confused with other equipment arriving at the job site.
Maximum lifting speed: 15 feet/second
It is important to exercise extreme care in handling and installing all
parts. Certain items are precision machined for proper alignment and,
if dropped, banged, sprung or mistreated in any way, misalignment
and malfunction will result. Other components, such as the electrical
cable, may be vulnerable to gouging or scung. Parts which are too
heavy to be lifted from the transporting car or truck should be skidded
slowly and carefully to the ground to prevent damage. Never unload
by dropping parts directly from the carrier to the ground and never
use shipping crates for skids.
Read and follow the storage instructions carefully because care of the
pump during this period before installation can be as important as
maintenance after operation has begun.
Check all parts against the packing list to make sure nothing is miss-
ing. It is much better to find out now than during the installation.
Report any discrepancies immediately to Franklin Electric.

7
SAFETY CONSIDERATIONS
-5050100 150
TEMPERATURES - °C
TEMPERATURES - °F
MAX DISCHARGE PRESSURE - lb /in
200 250 300
300
250
200
150
100
-100 0100 200 300 400 500 600 700
50
250
500
750
1000
1250
1500
1750
2000
D2
D2L
D4
D4L
DC2
DC3
TI
TIP
ZR
DCI
DCI LOW TEMPERATURE
LIMIT
CLASS 150 PUMPS
BASED ON ANSI B16.5
CLASS 150
FLANGES
DM
DINC
DNI
D20
CD4M
CD4M
UPPER LIMIT
DCI
UPPER LIMIT
CR29
DS
DS
350
0
2
MAX DISCHARGE PRESSURE - kPa
f
-5050100 150
TEMPERATURES - °C
TEMPERATURES - °F
MAX DISCHARGE PRESSURE - lb /in
200 250 300
350
300
250
200
150
-100 0100 200 300 400 500 600 700
100
500
750
1000
1250
1500
1750
2250
2000
D2
D2L
D4
D4L
D4
DC2
DC3
TI
TIP
ZR
LOW
TEMPERATURE
LIMIT
GROUP I & II
CLASS 300 PUMPS
BASED ON ANSI B16.5
GROUP III
CLASS 300 PUMPS
LIMITED TO CLASS 150 RATINGS
CLASS 300
FLANGES
DM
DINC
DNI
D20
CD4M
CD4M
UPPER LIMIT
DS
DS
350
0
2
MAX DISCHARGE PRESSURE - kPa
f
FIGURE 2 – Pressure-Temperature Limits By Alloy
Designation Symbol ACI Designation Equivalent Wrought Designation ASTM Specification
Ductile Iron DCI None None A395
High Chrome Iron CR28 None None A532 class III
High Chrome Iron CR29 None None None
High Chrome Iron CR35 None None None
Carbon Steel DS None Carbon Steel A216, Gr. WCB
CF8 D2 CF8 304 A744, Gr. CF8
CF3 D2L CF3 304L A744, Gr. CF3
CF8M D4 CF8M 316 A744, Gr. CF8M
CF3M D4L CF3M 316L A744, Gr. CF3M
Ferralium® CD4M Cd4MCu Ferralium® A744, Gr. Cd4Mcu
Alloy 20 D20 CN7M Alloy 20 A744, Gr. CN7M
Inconel® 600 DIN CY40 Inconel® 600 A744, Gr. CY40
Monel® 400 DM M351 Monel® 400 A744, Gr. M351
Nickel DNI CZ100 Nickel 200 A744, Gr. CZ100
Chlorimet 2 DC2 N7M Hastelloy® B A744, Gr. N7M
Chlorimet 3 DC3 CW6M Hastelloy® C A744, Gr. CW6M
Titanium Ti None Titanium B367, Gr. C3
Titanium-Pd Ti-Pd None Titanium-Pd B367, Gr. C8A
Zirconium Zr None Zirconium B367, Gr. 702C
®Ferralium is a registered trademark of Langley Alloys. ®Hastelloy is a registered trademark of Haynes International. ®Inconel and Monel are regis-
tered trademarks of International Nickel Co. Inc.
FIGURE 3 – Alloy Cross Reference Chart

8
250
400
0
0
0.4
0.8
1. 2
1. 6
2.0
2.4
80 120160 200 240 280 320 360 400
500 750 1000 1250 1500
MAXIMUM ALLOWABLE SUCTION PRESSURE - kPa
SPECIFIC GRAVITY
1750 2000 2250 2500
MAXIMUM ALLOWABLE SUCTION PRESSURE - lb/in

Suction Pressure is limited only by the pressure
temperature ratings for all open impeller pump sizes
at all specific gravities and for semi-open impeller
pump sizes 8x10-14, 6x8-16A, 8x10-16 and 8x10-16H
through 2.0 specific gravity. RTF for specific gravities
above 2.0.
FSD
Reverse vane impeller
maximum allowable
suction pressure
1750 RPM
2L4x6-13A
3L6x8-14A
2L3x4-10H
2L3x4-10
1L1.5x3-8
1L1x1.5-6
1L1x1.5-8
2L1.5x3-13
2L1x2-10A
2L1.5x3-10A
2L2x3-10A
2L4x6-10H
2L3x4-13HH
1L2x3-6
2L2x3-8
2L3x4-8
2L2x3-13
2L4x6-10
2L3x4-13
1L1.5x3-6
0
0.4
0.8
1. 2
1. 6
2.0
2.4
SPECIFIC GRAVITY
MAXIMUM ALLOWABLE SUCTION PRESSURE - kPa
250
0500 750 1000 1250 1500 1750 2000 2250 2500
40080120 160 200 240 280 320 360
400
MAXIMUM ALLOWABLE SUCTION PRESSURE - lb/in

FSD Group I & II
Reverse vane impeller
maximum allowable
suction pressure
3500 RPM
1L1.5x3-6
1L1.5x3-8
1L1x1.5-6
1L1x1.5-8
2L1.5x3-13
2L1x2-10A
2L1.5x3-10A
2L2x3-10A
2L3x4-13/110
2L3x4-10
1L2x3-6
2L2x3-8
2L3x4-8
2L2x3-13
2L4x6-10
For all open impellers pumps
suction pressure is limited only
by the pressure temperature ratings.
FIGURE 4 – Maximum Allowable Suction Pressures

9
STORAGE
SHORT-TERM STORAGE
Normal packaging is designed to protect the pump during shipment
and for dry, indoor storage for up to two months or less. If the pump
is not to be installed or operated soon after delivery, store the unit in
a clean, dry place, having slow changes in environmental conditions.
Steps should be taken to protect the pump against moisture, dirt and
foreign particulate intrusion. The procedure followed for this short-
term storage is summarized below:
Standard Protection for Shipment :
a. Loose unmounted items, including, but not limited
to, oilers, packing, coupling spacers, stilts and mechanical
seals are packaged in a water proof plastic bag and placed
under the coupling guard. Larger items are boxed and metal
banded to the base plate. For pumps not mounted on a base
plate, the bag and/or carton is placed inside the shipping
carton. All parts bags and cartons are identified with the
sales order number, the customer purchase order number
and the pump item number (if applicable).
b. Inner surfaces of the bearing housing, shaft (area through
bearing housing) and bearings are coated with Cortec VCI-
329 rust inhibitor, or equal.
Note: Bearing housings are not filled with oil prior to ship-
ment.
c. Regreasable bearings are packed with grease (Exxon
Mobile Polyrex EM).
d. After a performance test, if required, the pump is tipped
on the suction flange for drainage (some residual water may
remain in the casing). Then, internal surfaces of ferrous
casings, covers, flange faces and the impeller surface are
sprayed with Calgon Vestal Labs RP-743m or equal. Exposed
shafts are taped with Polywrap.
e. Flange faces are protected with plastic covers secured
with plastic drive bolts. 3/16 in (7.8 mm) steel or 1/4 in (6.3
mm) wood covers with rubber gaskets, steel bolts and nuts
are available at extra cost.
f. All assemblies are bolted to a wood skid which confines
the assembly within the perimeter of the skid.
g. Assemblies with special paint are protected with a plastic
wrap.
h. Bare pumps, when not mounted on base plates, are
bolted to wood skids.
i. All assemblies having external piping (seal flush and cool-
ing water plans), etc. are packaged and braced to withstand
normal handling during shipment. In some cases compo-
nents may be disassembled for shipment. The pump must be
stored in a covered, dry location.
It is recommended that the following procedure is taken:
1. Ensure that the bearings are packed with the recom-
mended grease (if grease lubricated) or coated with oil (if
oil lubricated) to prevent moisture from entering the bearing
housings.
2. Remove all glands, packing and lantern rings from the
stung box (if packed). If the pump is supplied with a
mechanical seal, remove the mechanical seal and coat it with
a light film of oil.
3. Ensure that the suction and discharge flanges are covered
and secured with cardboard, plastic or wood to prevent
foreign objects from entering the pump.
4. If the pump is to be stored outdoors with no overhead
covering, cover the unit with a tarp or other suitable cover-
ing.
LONG-TERM STORAGE
Long-term storage is defined as more than two months, but less than
12 months. The procedure Franklin Electric follows for long-term stor-
age of pumps is given below. These procedures are in addition to the
short-term procedure above.
Solid wood skids are utilized. Holes are drilled in the skid to accom-
modate the anchor bolt holes in the base plate or the casing and bear-
ing housing feet holes on assemblies less base plate. Tackwrap sheet-
ing is then placed on top of the skid and the pump assembly is placed
on top of the Tackwrap. Metal bolts with washers and rubber bushings
are inserted through the skid, the Tackwrap and the assembly from the
bottom of the skid and are then secured with hex nuts. When the nuts
are “snugged” down to the top of the base plate or casing and bearing
housing feet, the rubber bushing is expanded, sealing the hole from
the atmosphere. Desiccant bags are placed on the Tackwrap. The
Tackwrap is drawn up around the assembly and hermetically (heat)
sealed across the top. The assembly is completely sealed from the
atmosphere and the desiccant will absorb any entrapped moisture. A
solid wood box is then used to cover the assembly to provide protec-
tion from the elements and handling. This packaging will provide
protection up to twelve months without damage to mechanical seals,
bearings, lip seals, etc. due to humidity, salt laden air, dust, etc. After
unpacking, protection will be the responsibility of the user. Addition
of oil to the bearing housing will remove the inhibitor. If units are to
be idle for extended periods after addition of lubricants, inhibitor oils
and greases should be used.
Every three months, the shaft should be rotated approximately 10
revolutions.

10
same condition as was the case at the factory. Thus the factory align-
ment will be done with the base sitting in an unrestrained condition
on a flat and level surface. This standard also emphasizes the need to
ensure the shaft spacing is adequate to accept the specified coupling
spacer. The factory alignment procedure is summarized below:
1. The base plate is placed on a flat and level work bench in a
free and unstressed position.
2. The base plate is leveled as necessary. Leveling is accom-
plished by placing shims under the rails (or feet) of the base
at the appropriate anchor bolt hole locations. Levelness is
checked in both the longitudinal and lateral directions.
3. The motor and appropriate motor mounting hardware is
placed on the base plate and the motor is checked for any
planar soft-foot condition. If any is present it is eliminated
by shimming.
4. The motor feet holes are centered around the motor
mounting fasteners.
5. The motor is fastened in place by tightening the nuts on
two diagonal motor mounting studs.
6. The pump is put onto the base plate and leveled. If an
adjustment is necessary, we add or delete shims between the
pump foot and the base plate.
7. The spacer coupling gap is verified.
8. The parallel and angular vertical alignment is made by
shimming under the motor.
9. All four motor feet are tightened down.
10. The pump and motor shafts are then aligned horizon-
tally, in both parallel and angular, by moving the pump to
the fixed motor. The pump feet are tightened down.
11. Both horizontal and vertical alignment are again final
checked as is the coupling spacer gap.
RECOMMENDED PROCEDURE FOR BASE
PLATE INSTALLATION & FINAL FIELD
ALIGNMENT
NEWLY GROUTED BASE PLATES
1. The pump foundation should be located as close to
the source of the fluid to be pumped as practical. There
should be adequate space for workers to install, operate
and maintain the pump. The foundation should be suf-
ficient to absorb any vibration and should provide a rigid
support for the pump and motor. Recommended mass of a
INSTALLATION & ALIGNMENT
PREPARATION
Before installing the pump, clean the suction and discharge flanges
thoroughly. Remove any protective coatings that may be on the shaft.
If the pump is coming from Short-Term or Long-Term storage and has
been prepared for storage in the manner above, remove all grease
and/or oil from the bearings. The bearings should be flushed with an
appropriate fluid to remove any contamination prior to placing the
pump into service.
PUMP LOCATION
The pump should be installed as close to the source of the liquid as
the job-site allows, with the shortest and most direct suction line
possible.
The pump should also be installed with future inspection and mainte-
nance in mind. Ample space and headroom for a lifting crane or hoist
suciently string to lift the entire unit.
Ensure that there is suitable power available for the pump driver.
You must confirm that the appropriate power is available and that it
matches the requirements on the motor data plate.
FOUNDATION
The foundation should be suciently sized to reduce vibration and
rigid enough to avoid any movement both axially and/or radially. The
foundation mass should be four (4) to six (6) times the complete mass
of the entire pumping assembly.
The foundation should be poured without interruption to within 0.500
in. (13 mm) to 1.500 in. (38 mm) of the finished height. The top sur-
face of the foundation should be well scored and grooved before the
concrete sets. This provides a bonding surface for the grout. Founda-
tion bolts should be set into the concrete as shown in FIGURE 5. Allow
enough bolt length for grout, shims, lower baseplate flange, nuts and
washers. The foundation should be allowed to cure for several days
before the baseplate is shimmed and grouted.
FACTORY PRELIMINARY ALIGNMENT
PROCEDURE
The purpose of factory alignment is to ensure that the user will have
full utilization of the clearance in the motor holes for final job-site
alignment. To achieve this, the factory alignment procedure speci-
fies that the pump be aligned in the horizontal plane to the motor,
with the motor foot bolts centered in the motor holes. This procedure
ensures that there is sucient clearance in the motor holes for the
customer to field align the motor to the pump, to zero tolerance. This
philosophy requires that the customer be able to place the base in the

11
concrete foundation should be four (4) to six (6) times that
of the pump, motor and base. Note that foundation bolts
are imbedded in the concrete inside a sleeve to allow some
movement of the bolt.
2. Level the pump base plate assembly. If the base plate has
machined coplanar mounting surfaces, these machined sur-
faces are to be referenced when leveling the base plate. This
may require that the pump and motor be removed from the
base plate in order to reference the machined faces. If the
base plate is without machined coplanar mounting surfaces,
the pump and motor are to be left on the base plate. The
proper surfaces to reference when leveling the pump base
plate assembly are the pump suction and discharge flanges.
DO NOT stress the base plate. DO NOT bolt the suction or
discharge flanges of the pump to the piping until the base
plate foundation is completely installed. If equipped, use
leveling jackscrews to level the base plate. If jackscrews
are not provided, shims and wedges should be used. See
FIGURE 5. Check for levelness in both the longitudinal and
lateral directions. Shims should be placed at all base anchor
bolt locations, and in the middle edge of the base if the base
is more than five feet long. Do not rely on the bottom of the
base plate to be flat. Standard base plate bottoms are not
machined, and it is not likely that the field mounting surface
is flat.
3. After leveling the base plate, tighten the anchor bolts.
If shims were used, make sure that the base plate was
shimmed near each anchor bolt before tightening. Failure
to do this may result in a torsional twist of the base plate,
which could make it impossible to obtain final alignment.
Check the level of the base plate to make sure that tighten-
ing the anchor bolts did not disturb the level of the base
plate. If the anchor bolts did change the level, adjust the
jackscrews or shims as needed to level the base plate. Con-
tinue adjusting the jackscrews or shims and tightening the
anchor bolts until the base plate is level.
4. Check initial alignment. If the pump and motor were
removed from the base plate proceed with step 5 first, then
the pump and motor should be reinstalled onto the base
plate using Franklin Electric Factory Preliminary Alignment
Procedure and then continue with the following. As de-
scribed above, pumps are given a preliminary alignment at
the factory. This preliminary alignment is done in a way that
ensures that, if the installer duplicates the factory condi-
tions, there will be sucient clearance between the motor
hold down bolts and motor foot holes to move the motor
into final alignment. If the pump and motor were properly
reinstalled to the base plate or if they were not removed
from the base plate and there has been no transit damage,
and also if the above steps where done properly, the pump
and driver should be within 0.015 in. (0.38 mm) FIM (Full
Indicator Movement) parallel and 0.0025 in/in (0.0025 mm/
mm) FIM angular. If this is not the case first check to see if
the driver mounting fasteners are centered in the driver feet
holes. If not, re-center the fasteners and perform a prelimi-
nary alignment to the above tolerances by shimming under
the motor for vertical alignment and by moving the pump for
horizontal alignment.
3/4” TO 1-1/2”
ALLOWANCE
FOR GROUT
GROU
T
FINISH GROUTING
TOP OF FOUNDATION LEFT
ROUGH - CLEAN AND WET DOWN
PIPE SLEEVE
WASHER
LUG
DAM
1/4”
LEVELING WEDGES
OR SHIM -
LEFT IN PLACE
FIGURE 5 – Base Plate Foundation
5. Grout the base plate. A non-shrinking grout should be
used. Grout compensates for uneven foundation, distributes
weight of unit, and prevents shifting. Use an approved, non-
shrinking grout, after setting and leveling unit.
a. Build strong form around the foundation to contain
grout.
b. Soak top of concrete foundation thoroughly, then
remove surface water.
c. The area under an elevated motor pedestal should also
be completely filled with grout.
d. After the grout has thoroughly hardened, check the
foundation bolts and tighten if necessary.
e. Approximately 14 days after the grout has been poured
or when the grout has thoroughly dried, apply an oil base
paint to the exposed edges of the grout to prevent air and
moisture from coming in contact with the grout.

12
Make sure that the grout fills the area under the base plate.
After the grout has cured, check for voids and repair them.
6. Run piping to the suction and discharge of the pump.
There should be no piping loads transmitted to the pump
after connection is made. Recheck the alignment to verify
that there are no significant loads.
7. Perform final alignment. Check for soft-foot under the
driver. An indicator placed on the coupling, reading in the
vertical direction, should not indicate more than 0.002 in
(0.05 mm) movement when any driver fastener is loosened.
Align the driver first in the vertical direction by shimming
underneath its feet. When satisfactory alignment is ob-
tained the number of shims in the pack should be minimized.
It is recommended that no more than five shims be used
under any foot. Final horizontal alignment is made by mov-
ing the driver. Maximum pump reliability is obtained by hav-
ing near perfect alignment. Franklin Electric recommends
no more than 0.002 in (0.05mm) parallel and 0.0005 in/in
(0.0005 mm/mm) angular misalignment.
8. Operate the pump for at least an hour or until it reaches
final operating temperature. Shut the pump down and
recheck alignment while the pump is hot. Piping thermal
expansion may change the alignment. Realign pump as
necessary.
EXISTING GROUTED BASE PLATES
When a pump is being installed on an existing grouted base plate, the
procedure is somewhat dierent from the previous section “NEWLY
GROUTED BASE PLATES.”
1. Mount the pump on the existing base plate.
2. Level the pump by putting a level on the discharge flange.
If not level, add or delete shims between the pump foot and
the base plate.
3. Check initial alignment. (Step 4 above)
4. Run piping to the suction and discharge flanges of the
pump. (Step 6 above)
5. Perform final alignment. (Step 7 above)
6. Recheck alignment after pump is hot. (Step 8 above)
All piping must be independently supported, accurately aligned and
preferably connected to the pump by a short length of flexible pip-
ing. The pump should not have to support the weight of the pipe or
compensate for misalignment. It should be possible to install suction
and discharge bolts through mating flanges without pulling or prying
either of the flanges. All piping must be tight. Pumps may vapor-
lock if air is allowed to leak into the piping. If the pump flange(s)
have tapped holes, select flange fasteners with thread engagement at
least equal to the fastener diameter but that do not bottom out in the
tapped holes before the joint is tight.
All alignment procedures should be conducted while the unit is cold
and then checked when the unit is up to operating temperature. For
high temperature applications, a hot alignment must also be con-
ducted to make sure that the thermal expansion of the entire assembly
is taken into consideration.
After final alignment, the pump and driver feet can be dowel to the
baseplate to make sure nothing moves while operating in service.
PIPING CONNECTION – SUCTION &
DISCHARGE
When installing the pump piping, be sure to observe the following
precautions:
Piping should always be run to the pump.
Do not move pump to pipe. This could make final alignment impos-
sible.
Both the suction and discharge piping should be supported inde-
pendently near the pump and properly aligned, so that no strain is
transmitted to the pump when the flange bolts are tightened. Use
pipe hangers or other supports at necessary intervals to provide
support. When expansion joints are used in the piping system, they
must be installed beyond the piping supports closest to the pump. Tie
bolts should be used with expansion joints to prevent pipe strain. Do
not install expansion joints next to the pump or in any way that would
cause a strain on the pump resulting from system pressure changes. It
is usually advisable to increase the size of both suction and discharge
pipes at the pump connections to decrease the loss of head from fric-
tion.
Piping Forces: Take care during installation and operation to minimize
pipe forces and/or moments on the pump casing.
Install piping as straight as possible, avoiding unnecessary bends.
Where necessary, use 45-degree or long sweep 90-degree fitting to
decrease friction losses.
Make sure that all piping joints are air-tight.
Where flanged joints are used, assure that inside diameters match
properly.
Remove burrs and sharp edges when making up joints.

SUCTION
DIAMETERS
10
13
FIGURE 6 – Good Piping Practices
When operating on a suction lift, the suction pipe should slope
upward to the pump nozzle. A horizontal suction line must have a
gradual rise to the pump. Any high point in the pipe will become
filled with air and thus prevent proper operation on the pump. When
reducing the piping to the suction opening diameter, use an eccentric
reducer with the eccentric side down to avoid air pockets.
NOTE: When operating on suction lift, never use a straight taper
reducer in a horizontal suction line as it tends to form an air pocket in
the top of the reducer and the pipe.
To facilitate cleaning pump liquid passage without dismantling pump,
a short section of pipe (Dutchman or spool piece), so designed that
it can be readily dropped out of the line, can be installed adjacent to
the suction flange. With this arrangement, any matter clogging the
impeller is accessible by removing the nozzle (or pipe section).
Valves in Suction Piping
When installing valves in the suction piping, observe the following
precautions:
a. If the pump is operating under static suction lift condi-
tions, a foot valve may be installed in the suction line to
avoid the necessity of priming each time the pump is started.
This valve should be of the flapper type, rather than the
multiple spring type, sized to avoid excessive friction in the
suction line. (Under all other conditions, a check valve, if
used, should be installed in the discharge line (See “Valves
in Discharge Piping” below).
b. When foot valves are used or where there are other possi-
bilities of “water hammer,” close the discharge valve slowly
before shutting down the pump.
Do not “spring” piping when making any connections.
Provide for pipe expansion when hot fluids are to be pumped.
SUCTION PIPING
When installing the suction piping, observe the following precautions.
See FIGURE 6.
The sizing and installation of the suction piping is extremely impor-
tant. It must be selected and installed so that pressure losses are
minimized and sucient liquid will flow into the pump when started
and operated. Many NPSH (Net Positive Suction Head) problems can
be attributed directly to improper suction piping systems.
Friction losses caused by undersized suction piping can increase the
fluid’s velocity into the pump. As recommended by the Hydraulic
Institute Standard ANSI/HI 1.1-1.5-1994, suction pipe velocity should
not exceed the velocity in the pump suction nozzle. In some situations
pipe velocity may need to be further reduced to satisfy pump NPSH
requirements and to control suction line losses. Pipe friction can be
reduced by using pipes that are one to two sizes larger than the pump
suction nozzle in order to maintain pipe velocities less than 5 feet/
second.
Suction piping should be short in length, as direct as possible, and
never smaller in diameter than the pump suction opening.
If the suction pipe is short, the pipe diameter can be the same size as
the suction opening. If longer suction pipe is required, pipes should
be one or two sizes larger than the opening, depending on piping
length.
Suction piping for horizontal double suction pumps should not be
installed with an elbow close to the suction flange of the pump, except
when the suction elbow is in the vertical plane.
A suction pipe of the same size as the suction nozzle, approaching
at any angle other than straight up or straight down, must have the
elbow located 10 pipe diameters from the suction flange of the pump.
Vertical mounted pumps and other space limitations require special
piping.
There is always an uneven turbulent flow around an elbow. When it is
in a position other than the vertical it causes more liquid to enter one
side of the impeller than the other. This results in high un-equalized
thrust loads that will overheat the bearings and cause rapid wear, in
addition to aecting hydraulic performance.

14
When fluid velocity in the pipe is high, for example 10 ft/s (3 m/s)
or higher, a rapidly closing discharge valve can cause a damaging
pressure surge. A dampening arrangement should be provided in the
piping.
Pressure Gauges
Properly sized pressure gauges should be installed in both the suc-
tion and discharge nozzles in the gauge taps (which are provided on
request). The gauges will enable the operator to easily observe the
operation of the pump and also determine if the pump is operating in
conformance with the performance curve. If cavitation, vapor binding
or other unstable operation should occur, widely fluctuating discharge
pressure will be noted.
Pump Insulation
On chilled water applications most pumps are insulated. As part of
this practice, the pump bearing housings should not be insulated since
this would tend to “trap” heat inside the housing.
This could lead to increased bearing temperatures and premature
bearing failures.
PUMP AND SHAFT ALIGNMENT CHECK
After connecting piping, rotate the pump drive shaft clockwise (view
from motor end) by hand several complete revolutions to be sure
there is no binding and that all parts are free. Recheck shaft align-
ment. If piping caused unit to be out of alignment, correct piping to
relieve strain on the pump.
MECHANICAL SEAL
When the pump is intended to be equipped with a mechanical seal, it
is Franklin Electric standard practice to install the mechanical seal in
the pump prior to shipment. Specific order requirements may specify
that the seal be shipped separately, or none be supplied. It is the
pump installer’s responsibility to determine if a seal was installed. If a
seal was supplied but not installed, the seal and installation instruc-
tions will be shipped with the pump.
Failure to ensure that a seal is installed may result in serious leakage of
the pumped fluid.
Seal and seal support system must be installed and operational as
specified by the seal manufacturer.
Mechanical seals are preferred over packing on some applications
because of better sealing qualities and longer service-ability.
Leakage is eliminated when a seal is properly installed and normal life
is much greater than that of packing on similar applications.
Pumps containing single mechanical seals normally utilize the
pumped liquid to lubricate the seal faces. This method is preferred
when the pumped liquid is neither abrasive nor corrosive.
PACKING
When the pump is intended to be equipped with shaft packing, it is
Franklin Electric standard practice to install the packing in the stung
box prior to shipment. The packing is shipped with the pump. It is
the pump installer’s responsibility to install the packing in the stung
box.
c. Where two or more pumps are connected to the same suc-
tion line, install gate valves so that any pump can be isolated
from the line. Gate valves should be installed on the suction
side of all pumps with a positive pressure for maintenance
purposes. Install gate valves with stems horizontal to avoid
air pockets. Globe valves should not be used, particularly
where NPSH is critical.
d. The pump must never be throttled by the use of a valve on
the suction side of the pump. Suction valves should be used
only to isolate the pump for maintenance purposes, and
should always be installed in positions to avoid air pockets.
e. A pump drain valve should be installed in the suction pip-
ing between the isolation valve and the pump.
DISCHARGE PIPING
If the discharge piping is short, the pipe diameter can be the same as
the discharge opening. If the piping is long, pipe diameter should be
one or two sizes larger than the discharge opening. On long horizon-
tal runs, it is desirable to maintain as even a grade as possible. Avoid
high spots, such as loops, which will collect air and throttle the system
or lead to erratic pumping.
Valves in Discharge Piping
A triple duty valve should be installed in the discharge. The triple
duty valve placed on the pump protects the pump from excessive back
pressure, and prevents liquid from running back through the pump in
case of power failure.

15
FIGURE 7 - Packing Orientation
Tap V
Tap V
Packing
Lantern Ring
Lip Seal
Failure to ensure that packing is installed may result in serious leakage
of the pumped fluid.
PIPING CONNECTION – SEAL/PACKING
SUPPORT SYSTEM
If the pump has a seal support system, it is mandatory that this system
be fully installed and operational before the pump is started.
If packing is used:
Packing Lubrication – Water, when compatible with the pumpage,
should be introduced into the packing box at pressure 10 to 15 lbf/in2
(69 to 103 kPa) above the stung box pressure.
The gland should be adjusted to give a flow rate of 20 to 30 drops per
minute for clean fluid. For abrasive applications, the regulated flow
rate should be 1-2 gpm (0.06-0.13 l/s).
Grease lubrication, when compatible with the pumpage, may be used.
In non-abrasive applications the pumpage itself may be sucient to
lubricate the packing without need for external lines. The internal
flush line should be plugged.
Abrasive Packing Arrangement – The installation procedures are the
same as the standard packing with some exceptions. A special lip seal
is installed first, followed by two lantern ring assemblies, then two of
the packing rings provided.
A flush line from a clean external source should be connected to the
top of the stung box.
FIGURE 8 - Abrasive Packing Lubrication
PIPING CONNECTION – BEARING HOUSING
COOLING SYSTEM
Make connections as shown below. Liquid at less than 90°F (32°C)
should be supplied at a regulated flow rate of at least 1 gpm (0.06 l/s).
1/2 in. OD Tubing
FIGURE 9 – Bearing Housing Cooling

16
PIPING CONNECTION – SUPPORT LEG
COOLING FOR CENTERLINE MOUNTING
OPTION
If the casing is centerline mounted, and the process temperature is
over 350°F (178°C), then the casing support legs may need to be
cooled (figure 10). Cool water (less than 90°F (32°C)) should be run
through the legs at a flow rate of at least 1 gpm (0.06 l/s) as shown
below.
PIPING CONNECTION – OIL MIST
LUBRICATION SYSTEM
The piping connections for an oil mist lubrication system are shown in
FIGURES 12 & 13.
FIGURE 12 – Oil Mist Lubrication – Wet Sump
FIGURE 10 – Support Leg Cooling
PIPING CONNECTION – HEATING/COOLING
FLUID FOR JACKETED COVER/CASING
The piping connections for jacketed covers and casings are shown
below (FIGURE 11). The flow rate of the cooling water (less than 90°F
(32°C)) should be at least 2 gpm (0.13 l/s).
Outlet
Outlet
Inlet
Inlet
FIGURE 11 – Seal Chamber Cooling
Inlet for Steam or Self
Ve
nting Outlet for Liquid
Inlet for Liquid of Self
Draining Outlet for Steam
Condensate
Suggested Plumbing to
Obtain Drain When
Using Liquid
Valve
Drain Plug
Locate Vent Fitting
Above Horizontal
Centerline At Assembly
Locate Pipe Plug
Below Horizontal
Centerline At Assembly
1/2” NPT
1/4” NPT
Opposite Side
Locate Vent Fitting
Above Horizontal
Centerline At Assembly
Locate Pipe Plug
Below Horizontal
Centerline At Assembly
1/2” NPT
1/4” NPT
Opposite Side
1” NPT
FIGURE 13 – Oil Mist Lubrication – Dry Sump
BEARING LUBRICATION
Grease lubricated ball bearings are packed with grease at the factory
and ordinarily will require no attention before starting, provided the
pump has been stored in a clean, dry place prior to its first operation.
The bearings should be watched the first hour or so after the pump has
been started to see that they are operating properly.
The importance of proper lubrication cannot be over emphasized. It
is dicult to say how often a bearing should be greased, since that
depends on the conditions of operation. It is well to add one ounce of
grease at regular intervals but it is equally important to avoid adding
too much grease. For average operating conditions, it is recommend-
ed that 1 oz. of grease be added at intervals of three to six months
and only clean grease be used. It is always best if unit can be stopped
while grease is added to avoid overloading.

17
COUPLING
A direction arrow is cast on the casing. Make sure the motor rotates in
the same direction before coupling the motor to the Pump.
It is absolutely essential that the rotation of the motor be checked
before connecting the shaft coupling. Incorrect rotation of the pump,
for even a short time, can dislodge the shaft sleeves which may cause
serious damage to the pump.
The coupling should be installed as advised by the coupling manufac-
turer. Pumps are shipped without the spacer installed. If the spacer
has been installed to facilitate alignment then it must be removed
prior to checking rotation. Remove protective material from the
coupling and any exposed portions of the shaft before installing the
coupling.
PUMP OPERATION
ROTATION CHECK
Excess grease is the most common cause of overheating.
A lithium based NLGI-2 grade grease should be used for lubricating
bearings where the ambient temperature is above -20°F. Grease lu-
bricated bearings are packed at the factory with Exxon Mobile Polyrex
EM. Other recommended greases are Texaco Multifak 2, Shell Alvania
2 and Mobilux No. 2 grease. Greases made from animal or vegetable
oils are not recommended due to the danger of deterioration and
forming of acid. Do not use graphite. Use of an ISO VG 100 mineral
base oil with rust and oxidation inhibitors is recommended.
The maximum desirable operating temperature for ball bearings is
180°F. Should the temperature of the bearing frame rise above 180°F,
the pump should be shut down to determine the cause.
Mineral Oil
Quality mineral oil with rust and oxidation inhibi-
tors. Mobil DTE Heavy/Medium ISO VG 68 or
equivalent.
Synthetic
Royal Purple SynFilm 68, Conoco SYNCON 68 or
equivalent. Some synthetic lubricants require
Viton O-rings.
Grease Exxon Mobile Polyrex EM, Chevron SRI #2 (or
compatible).
FIGURE 14 – Recommended Lubricants
Maximum Oil Tem-
perature
ISO Viscosity
Grade
Minimum Viscosity
Index
Up to 160°F (71°C) 46 95
160-175°F (71°-
80°C)
68 95
175-200°F (80°-
94°C)
100 95
FIGURE 15 – Oil Viscosity Grades
Lubricant Under 60°F
(71°C)
160-175°F
(71-80°C)
175-200°F
(80-94°C)
Grease 6 mo 3 mo 1.5 mo
Mineral Oil 6 mo 3 mo 1.5 mo
Synthetic
Oil** 18 mo 18 mo 18 mo
FIGURE 16 – Re-lubrication Intervals
It is absolutely essential that the rotation of the motor be checked
before connecting the shaft coupling. Incorrect rotation of the pump,
for even a short time, can dislodge and damage the shaft sleeves,
impeller, casing, shaft and shaft seal.
PRE START-UP CHECKS
Prior to starting the pump it is essential that the following checks are
made. These checks are all described in detail in the Maintenance Sec-
tion of this booklet.
• Pump and Motor properly secured to the base plate
• Check alignment of pump and motor
• Coupling guard in place and not rubbing
• Rotation check, see above
THIS IS ABSOLUTELY ESSENTIAL
• Shaft seal and/or packing properly installed
• Seal support system operational
• Bearing lubrication
• Pump instrumentation is operational
• Pump is primed
• Rotation of shaft by hand
As a final step in preparation for operation, it is important to rotate
the shaft by hand to be certain that all rotating parts move freely and
that there are no foreign objects in the pump.

18
PRIMING
If the pump is installed with a positive head on the suction, it can be
primed by opening the suction and vent valve and allowing the liquid
to enter the casing. If the pump is installed with a suction lift, priming
must be done by other methods such as foot valves, ejectors or by
manually filling the casing and suction line.
ENSURING PROPER NPSHA
Net Positive Suction Head – Available (NPSHA) is the measure of the
energy in a liquid above the vapor pressure. It is used to determine
the likelihood that a fluid will vaporize in the pump. It is critical
because a centrifugal pump is designed to pump a liquid, not a vapor.
Vaporization in a pump will result in damage to the pump, deteriora-
tion of the Total Dierential Head (TDH), and possibly a complete
stopping of pumping.
Net Positive Suction Head – Required (NPSHR) is the decrease of fluid
energy between the inlet of the pump and the point of lowest pressure
in the pump. This decrease occurs because of friction losses and fluid
accelerations in the inlet region of the pump, and particularly accel-
erations as the fluid enters the impeller vanes. The value for NPSHR
for the specific pump purchased is given in the pump data sheet and
on the pump performance curve.
For a pump to operate properly the NPSHA must be greater than the
NPSHR. Good practice dictates that this margin should be at least 5 ft
(1.5 m) or 20%, whichever is greater.
Ensuring that NPSHA is larger than NPSHR by the suggested margin
will greatly enhance pump performance and reliability. It will also
reduce the likelihood of cavitation, which can severely damage the
pump.
MINIMUM FLOW
Minimum continuous stable flow is the lowest flow at which the pump
can operate and still conform to the bearing life, shaft deflection and
bearing housing vibration limits of the ASME standard. Pumps may be
operated at lower flows, but it must be recognized that the pump may
not conform to one or more of these limits. For example, vibration
may exceed the limit set by the ASME standard. The size of the pump,
the energy absorbed and the liquid pumped are some of the consider-
ations in determining the minimum flow.
Typically, limitations of 20% of the capacity at the best eciency
point (BEP) should be specified as the minimum flow. However,
Franklin Electric has determined that several pumps must be limited to
higher minimum flows to provide optimum service. The following are
the recommended minimum flows for these specific pumps:
Pump Size
60 Hz 50 Hz
RPM
Minimum
Flow
(% of BEP)
RPM
Minimum
Flow
(% of BEP)
1L2x3-6 3500 25% 2900 21%
2L2x3-8 3500 25% 2900 21%
2L3x4-8 3500 25% 2900 21%
2L2x3-10 3500 33% 2900 28%
2L3x4-10 3500 33% 2900 28%
2L4x6-10 3500 50% 2900 42%
2L2x3-13 3500 50% 2900 42%
2L3x4-13 3500 50% 2900 42%
2L4x6-13 1750 50% 1450 42%
All GRP III* 1750 50% 1450 42%
FIGURE 17 - Minimum Continuous Safe Flow
Note: “Minimum intermittent flow” value of 50% of the “minimum
continuous flow” as long as that flow is greater than the “minimum
thermal flow.”
All FSD pumps also have a “Minimum Thermal Flow.” This is defined as
the minimum flow that will not cause an excessive temperature rise.
Minimum Thermal Flow is application dependent.
Do not operate the pump below Minimum Thermal Flow, as this could
cause an excessive temperature rise. Contact Technical Support for
determination of Minimum Thermal flow.
STARTING THE PUMP AND ADJUSTING FLOW
1. Open the suction valve to full open position. It is very
important to leave the suction valve open while the pump
is operating. Any throttling or adjusting of flow must be
done through the discharge valve. Partially closing the suc-
tion valve can create serious NPSH and pump performance
problems.
Never operate pump with both the suction and discharge valves
closed. This could cause an explosion.

19
2. A standard centrifugal pump will not move liquid unless
the pump is primed. A pump is said to be “primed” when
the casing and the suction piping are completely filled with
liquid. Open discharge valve a slight amount. This will
allow any entrapped air to escape and will normally allow
the pump to prime, if the suction source is above the pump.
When a condition exists where the suction pressure may
drop below the pump’s capability, it is advisable to add a
low pressure control device to shut the pump down when the
pressure drops below a predetermined minimum.
3. All cooling, heating, and flush lines must be started and
regulated.
4. Start the driver (typically, the electric motor).
5. Slowly open the discharge valve until the desired flow
is reached, keeping in mind the minimum flow restrictions
listed above.
6. Reduced capacity
Avoid running a centrifugal pump at drastically reduced
capacities or with discharge valve closed for extended
periods of time. This can cause severe temperature rise and
the liquid in the pump may reach its boiling point. If this
occurs, the mechanical seal will be exposed to vapor, with no
lubrication, and may score or seize to the stationary parts.
Continued running under these conditions when the suction
valve is also closed, can create an explosive condition due
to the confined vapor at high pressure and temperature.
Thermostats may be used to safeguard against over heating
by shutting down the pump at a predetermined temperature.
Safeguards should also be taken against possible operation
with a closed discharge valve, such as installing a bypass
back to the suction source. The size of the bypass line and
the required bypass flow rate is a function of the input
horsepower and the allowable temperature rise.
It is important that the discharge valve be opened within a short inter-
val after starting the driver. Failure to do this could cause a dangerous
build up of heat and possibly an explosion.
7. Reduced Head
Note that when discharge head drops, the pump’s flow rate
usually increases rapidly. Check motor for temperature rise
as this may cause overload. If overloading occurs, throttle
the discharge.
8. Surging Condition
A rapidly closing discharge valve can cause a damaging
pressure surge. A dampening arrangement should be pro-
vided in the piping.
OPERATION IN SUB-FREEZING CONDITIONS
When using the pump in sub-freezing conditions where the pump is
periodically idle, the pump should be properly drained or protected
with thermal devices which will keep the liquid in the pump from
freezing. High chrome iron pumps are not recommended for applica-
tions below 0°F (-18°C).
SHUTDOWN CONSIDERATIONS
When the pump is being shutdown, the procedure should be the
reverse of the start-up procedure. First, slowly close the discharge
valve, shutdown the driver, then close the suction valve. Remember,
closing the suction valve while the pump is running is a safety hazard
and could seriously damage the pump and other equipment.
TROUBLESHOOTING
The following is a guide to troubleshooting problems with FPSpumps.
Common problems are analyzed and solutions are oered. Obvi-
ously, it is impossible to cover every possible scenario. If a problem
exists that is not covered by one of the examples, then contact a local
Franklin Electric Sales Engineer or Distributor/Representative for as-
sistance.

20
POSSIBLE EFFECT
No liquid delivered Not enough liquid delivered Not enough discharge pressure Loss of liquid after starting Pump operating for a short time, then stops Pump is pulling high horsepower Driver running hot Excessive vibration Cavitation noise from pump Pump bearings running hot PROBLEM
Pump not primed/lack of prime/incomplete priming
Loss of prime
Suction lift too high
Discharge head too high
Rotational speed too low
Incorrect direction of rotation
Impeller plugged/impeller partially blocked by debris
Air leak in suction line
Air leak in discharge line
Insucient Net Positive Suction Pressure Available (NPSHA)
Damaged impeller
Defective packing
Foot valve too small or partially blocked
Inlet pipe not submerged enough
Impeller diameter too small
Obstruction in water passageways
Entrained air or gas in liquid
Discharge head lower than previously thought
Specific gravity of liquid higher than previously thought
Viscosity of liquid higher than previously thought
Bent or damaged shaft