Power-flo PFS411 Series Guide

877-24PUMPS • www.poweropumps.com
0.4 HP • 1750 RPM • 60 Hz
Submersible Euent, Sump
& Sewage Pumps
Standard &
High Temperature
ISP No: PFS411 - 1/2021
INSTALLATION, SERVICE & PARTS MANUAL
Series: PFS411,
PFS411A, PFS411VF
PFS421, PFS411HT

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Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
General Safety Information
Model Number
MFG Date
AMPS VOLTAGE
PHASE
60 Hz HP
877-24 PUMPS
www.powerflopumps.com
C US
® Power-Flo is a registered trademark of Power-Flo Technologies Inc.
Other brand and product names are trademarks or registered trademarks of their respective holders.
Alteration Rights Reserved. 7/2007, 6/08, 3/09, 4/09, 11/09, 4/10, 6/10, 7/10, 7/11, 2/12, 5/12, 6/13, 9/2020, 1/2021
Before installation, read the following
instructions carefully. Failure to follow
instruction and Safety information could
cause serious bodily injury, death and/or
property damage. Each Power-Flo pump is
individually factory tested to insure proper
performance. Closely following these
instructions will eliminate potential operating
problems, assuring years of trouble-free
service.
“Danger” indicates
an imminenty
hazardous situation which, if not avoided,
WILL result in death or serious injury.
“Warning” indicates
an imminenty
hazardous situation which, if not avoided,
MAY result in death or serious injury.
“Caution” indicates
an potentially
hazardous situation which, if not avoided,
MAY result in minor or moderate injury.
IMPORTANT - Power-Flo Pumps and
Systems is not responsible for losses, injury
or death resulting from failure to observe
these safety precautions, misuse, abuse or
misapplication of pumps or equipment.
ALL RETURNED
PRODUCTS MUST BE
CLEANED, SANITIZED,
OR DECONTAMINATED
PRIOR TO SHIPMENT, TO
INSURE EMPLOYEES WILL NOT BE EXPOSED
TO HEALTH HAZARDS IN HANDLING SAID
MATERIAL. ALL APPLICABLE LAWS AND
REGULATIONS SHALL APPLY.
Installation, wiring,
and junction
connections must be in accordance with
the National Electric Code and all applicable
state and local codes. Requirements may
vary depending on usage and location.
Installation and
servicing is to be
conducted by qualied personnel only.
Keep clear of suction
and discharge
openings. Do not insert ngers in
pump with power connected.
Always wear eye
protection when
working on pumps. Do not wear loose
clothing that may become entangled in
moving parts
Pumps build up heat
and pressure during
operation. Allow time
for pumps to cool
before handling or
servicing.
This pump is not
intended for use
in swimming pools or water
installations where human
contact with pumped uid. Pumps
when used as a decorative water fountain
pump MUST be used in circuit protected by
a Ground Fault Interrupter.
Risk of electric shock.
To reduce risk of
electric shock, always disconnect
pump from power source before
handling. Lock out power & tag.
For PFS411/421
Do not us in water
over 104˚F, the PFS411HT is designed
for 200˚F. Do not exceed manufactures
recommended maximum performance, as
this could cause the motor to overheat.
Do not lift, carry or
hang pump by the
electrical cables. Damage to the
electrical cables can cause shock,
burnes or death. Never handle
connected power cords with wet hands. Use
appropriate lifting device.
Sump and sewage
pumps often handle
materials which could cause illness or disease.
wear adequate protective clothing when
working on a used pump or piping. Never
enter a basin after it has been used.
Failure to permanently
ground the pump,
motor and controls before
connecting to power can cause
shock, burns or death.
These pumps are NOT
to be installed in
locations classied as hazardous
in accordance with the National
Electric Code, ANSI/NFPA 70.
IMPORTANT!
Prior to installation, record Model
Number, MFG Date, Amps, Voltage, Phase
and HP, from pump name plate for future
reference. Also record the Voltage and
Current Readings at Startup:
1 Phase Models
Amps: Volts:
Model Number: ____________________
MFG Date: ____________
PHASE: ______ HP: _________________
WARNING:
CANCER AND REPRODUCTIVE HARM-
WWW.P65WARNINGS.CA.GOV

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Specications
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
DISCHARGE 2” NPT, Female, Vertical
LIQUID
TEMPERATURE
77°F Continuous 115 volts
104°F Continuous 230 volts
VOLUTE Cast Iron, Class 30
MOTOR HOUSING Cast Iron, Class 30
IMPELLER 2 Vane, open with pump out vanes on back side
Material: Cast Iron, Class 30
SHAFT Stainless Steel
SEAL PLATE Cast Iron, Class 30
SQUARE RINGS Buna-N
HARDWARE Stainless Steel
PAINT Powder Coated - Industrial Grade
SEAL
Inboard Single Mechanical, Oil Filled,
Material: Carbon/Ceramic/Buna-N
Secondary Exclusion Seal
POWER CORD 20 Ft. Cord, Plug on 115 Volt, Pressure
Grommet for Sealing and Strain Relief
MOTOR Oil Filled, Squirrel Cage Induction
Class F Insulation
SINGLE PHASE
Permanent Split Capacitor (PSC),
Includes Overload Protection in Motor:
Trip O Temp. 248°F (120°C).
UPPER BEARING Single Row, Ball, Oil Lubricated
LOWER BEARING Single Row, Ball, Oil Lubricated
LEVEL CONTROL
“A”
“VF”
Wide Angle, Mechanical Float, 15Ft. Cord
with Piggy-Back Plug, Normally Open (N/O).
Vertical Float, 15Ft. Cord with Piggy-Back
Plug. O Point ONLY is Adjustable.
MODEL HP Hz Volts/
Ph RPM Full Load Amps
Locked
Rotor Amps
NEMA Start
Code
Winding Resistance
MAIN--START
Cord
Type
Cord
Size
Cord
O.D.
PFS411-20 4/10 60 115/1 1750 12.0 23.6 N7.72 -- 22.4 SJTW 16/3 0.335
PFS411A-20 4/10 60 115/1 1750 12.0 23.6 N7.72 -- 22.4 SJTW 16/3 0.335
PFS411VF-20 4/10 60 115/1 1750 12.0 23.6 N7.72 -- 22.4 SJTW 16/3 0.335
PFS421-20 4/10 60 230/1 1750 6.2 12.5 C 5.89 -- SJTW 16/3 0.335
-30 = 30 foot cord, -50 = 50 foot cord
Series: PFS411-20,
PFS411A-20, PFS411VF-20,
PFS421-20
4/10 HP • 1750 RPM • 60 Hz
Submersible Sewage Pump

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Dimensions & Performance
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
PFS411 & PFS421
without oat
PFS411VF
vertical level control
with piggy-back plug
PFS411A with
automatic oat

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DISCHARGE 2” NPT, Female, Vertical
LIQUID
TEMPERATURE 200°F (93°C) Continuous High Temperature
VOLUTE Cast Iron, Class 30
MOTOR HOUSING Cast Iron, Class 30
IMPELLER 2 Vane, open with pump out vanes on back side
Material: Cast Iron, Class 30
SHAFT Stainless Steel
SEAL PLATE Cast Iron, Class 30
SQUARE RINGS Buna-N
HARDWARE Stainless Steel
PAINT Powder Coated - Industrial Grade
SEAL
Inboard Single Mechanical, Oil Filled ,
Material: Type 21, Silicon Carbide/Buna-N
Secondary Exclusion Seal
POWER CORD 15 Ft. Cord, Plug on 115 Volt, Pressure
Grommet for Sealing and Strain Relief
MOTOR
Oil Filled, Squirrel Cage Induction
Class H Insulation, Vacuum Pressure
Impregnated (VPI)
SINGLE PHASE
Permanent Split Capacitor (PSC),
Includes Overload Protection in Motor: 115v,
50A, Trip O Temp. 293°F (145°C), closing
Temp. 226°F (108°C).
UPPER BEARING Single Row, Ball, Oil Lubricated
LOWER BEARING Single Row, Ball, Oil Lubricated
SLUDGE STRAINER HT: Bar Strainer
Specications - High Temp
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
MODEL HP Hz Volts/
Ph RPM Full Load Amps
Locked
Rotor Amps
NEMA Start
Code
Winding Resistance
MAIN -- START
Cord
Type
Cord
Size
Cord
O.D.
PFS411HT 4/10 60 115/1 1750 10.0 24.5 N1.6 -- 18.5 SOOW 14/3 0.335
-20 = 20 foot cord, -30 = 30 foot cord, -50 = 50 foot cord
Series: PFS411HT
4/10 HP • 1750 RPM • 60 Hz
High Temperature
Submersible Sewage Pump

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Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
Dimensions & Performance - High Temp
PFS411HT

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Minimum
Submergence Level
Bottom of Feet
6”
Receiving Inspection
Upon receiving the pump, it should be
inspected for damage or shortages.
If damage has occurred, le a claim
immediately with the company that
delivered the pump. If the manual is
removed from the packaging, do not
lose or misplace.
Storage
Any product that is stored for a period
longer than six (6) months from the
date of purchase should be bench
tested prior to installation. A bench
test consists of, checking the impeller
to assure it is free turning and a run
test to assure the motor (and switch
if provided) operate properly. Do not
pump out of liquid.
Controls
Manual models require a separate
approved pump control device or panel
for automatic operation. Be sure the
electrical specication of the control
selected properly match the electrical
specications of the pump.
Submergence
The pump should always be operated in
the submerged condition. The minimum
sump liquid level should never be less than
above the pump’s volute (See Figure 1).
Liquid Level Controls
Typical Discharge Pipe Mounted:
Refer to Figure 2 below which shows a
typical installation of a 1 phase 115 volt
pump using a level control mounted
to the discharge piping with a piggy-
back plug. The level control should
have adequate clearance so it cannot
hang up in it’s swing and that the pump
is completely submerged when the
level control is in the “O” mode. By
adjusting the cord tether the control
level can be changed. Automatic: Plug oat cord into GFI outlet, then
plug pump cord into oat cord.
Manual: Plug pump cord directly into GFI
outlet.
Level Control Basic Instructions:
Plug the level control plug into the GFI
receptacle, then plug the pump into the
piggy-back plug (See Figure 3). One cycle
of operation should be observed, so that
any potential problems can be corrected.
It is recommended that the level control
oat should be set to insure that the liquid
in the sump never drops below the top of
the motor housing or a minimum level of
6 inches above the basin oor.
Installation
These pumps are recommended for
use in a sump or basin. The sump
or basin shall be sealed and vented
in accordance with local plumbing
codes. This pump is designed to pump
euent or wastewater, nonexplosive
and noncorrosive liquids and shall
NOT be installed in locations classied
as hazardous in accordance with the
National Electrical Code (NEC) ANSI/
NFPA 70 or Canadian Electric Code
(CEC). The pump should never be
installed in a trench, ditch, or hole with
a dirt bottom. The legs will sink into
the dirt and the suction will become
plugged.
Figure 1
Receiving & Installation
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
Recommended
Submergence Level
Typical Installation with Wide Angle
Level Control
Figure 2
Figure 3

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The installation should be at a sucient
depth to ensure that all plumbing is
below the frost line. If this is not feasible,
remove the check valve and size the
basin to accommodate the additional
backow volume.
Discharge Piping
Discharge piping should be as short
as possible and sized no smaller than
the pump discharge. Do not reduce
the discharge pipe size below that
which is provided on the pump. Both
a check valve and a shut-o valve are
recommended for each pump. The
check valve is used to prevent backow
into the sump. The shut-o valve is
used to manually stop system ow
during pump servicing.
Electrical Connections
Power cable:
The power cable mounted to the pump
must not be modied in any way except
for shortening to a specic application.
Any splice between the pump and the
control panel must be made in
accordance with the electric codes. It is
recommended that a junction box, if used,
be mounted outside the sump or be of
at a minimum Nema 4 construction if
located within the wet well. DO NOT USE
THE POWER CABLE TO LIFT PUMP.
Always rely upon a Certied Electrician
for installation.
Overload Protection:
Single Phase - The stator in-winding
overload protector used is referred to
as an inherent overheating protector
and operates on the combined eect of
temperature and current.
This means that the overload protector
will trip out and shut the pump o if the
windings become too hot, or the
load current passing through them
becomes too high.
IMPORTANT ! - The overload will then
automatically reset and start the pump
up after the motor cools to a safe
temperature. In the event of an overload,
the source of this condition should be
determined and corrected immediately.
WARNING! - DO NOT LET
THE PUMP CYCLE OR RUN IF
AN OVERLOAD CONDITION
OCCURS !
If current through the temperature
sensor exceeds the values listed, an
intermediate control circuit relay must be
used to reduce the current or the sensor
will not work properly.
Wire Size:
If longer power cable is required consult
a qualied electrician for proper wire
size.
Pre-Operation
1. Check Voltage and Phase
Compare the voltage and phase
information stamped on the pump
name plate.
2. Check Pump Rotation - Improper
motor rotation can result in poor
pump performance and can damage
the motor and/or pump. Incorrect
rotation for Single-Phase pumps is
unlikely. Impeller rotation is
counter-clockwise as viewed from
bottom of pump.
3. Name Plate - Record the information
from the pump name plate to
drawing in front of manual for future
reference.
4. Insulation Test - An insulation
(megger) test should be performed
on the motor. Before the pump is put
into service. The resistance values
(ohms) as well as the voltage (volts)
and current (amps) should be
recorded.
5. Pump-Down Test - Be sure pump
has been properly wired, lowered into
the basin, sump or lift station, check
the system by lling with liquid and
allowing the pump to operate through
its pumping cycle. The time needed to
empty the system, or pump-down
time along with the volume of water,
should be recorded.
Maintenance
No lubrication or maintenance is required.
Perform the following checks when pump
is removed from operation or when pump
performance deteriorates:
a). Inspect motor chamber for oil level
and contamination.
b). Inspect impeller and body for
excessive build-up or clogging.
c). Inspect motor and bearings.
d). Inspect seal for wear or leakage.
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
Installation & Service

9
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Servicing
NOTE: Item numbers in ( ) refer to Figures
5 thru 7.
Cooling Oil - Anytime the pump is
removed from operation, the cooling oil
in the motor housing should be checked
visually for oil level and contamination.
To check oil, set unit upright. Remove
pipe plug from housing. With a ashlight,
visually inspect the oil in the housing
to make sure it is clean and clear, light
amber in color and free from suspended
particles. Milky white oil indicates the
presence of water. Oil level should be just
above the motor when pump is in vertical
position.
Oil Testing
• Drain oil into a clean, dry container by
placing pump on it’s side, remove pipe
plug, from housing.
• Check oil for contamination using an
oil tester with a range to 30 Kilovolts
breakdown.
• If oil is found to be clean and
uncontaminated (measuring above
15 KV. breakdown), rell the housing.
• If oil is found to be dirty or
contaminated (or measures below
15 KV. breakdown), the pump must
be carefully inspected for leaks at the
shaft seal, cable assembly, square ring
and pipe plug, before relling with oil. To
locate the leak, perform a pressure test.
After leak is repaired, dispose of old oil
properly, and rell with new oil.
Pressure Test (If oil has been drained)
Remove pipe plug from housing. Apply
pipe sealant to pressure gauge assembly
and tighten into hole. Pressurize motor
housing to 10 P.S.I. Use soap solution
around the sealed areas and inspect joints
for “air bubbles”.
If, after ve minutes, the pressure is still
holding constant, and no “bubbles” are
observed, slowly bleed the pressure and
remove the gauge assembly. Replace
oil. Leek must be located and repaired if
pressure does not hold.
Pressure Test (If oil has NOT been
drained) - Oil should be at normal level.
Remove pipe plug from housing. Apply
pipe sealant to pressure gauge assembly
and tighten into hole. Pressurize motor
housing to 10 P.S.I. Use soap solution
around the sealed areas above the oil
level and inspect joints for “air bubbles”.
For sealed areas below oil level, leeks will
seep oil. If, after ve minutes, the pressure
is still holding constant, and no “bubbles”
/oil seepage is observed, slowly bleed the
pressure and remove the gauge assembly.
Replace oil. Leek must be located and
repaired if pressure does not hold.
Pressure builds up extremely
fast, increase pressure by
“TAPPING” air nozzle. Too much
pressure will damage seal. DO
NOT exceed 10 P.S.I.
Oil Replacement - Set unit upright and
rell with new cooling oil as per table
below . Fill to just above motor, but below
capacitor as an air space must remain in
the top of the housing to compensate
for oil expansion. Apply pipe thread
compound to threads of pipe plug then
assemble to housing.
DO NOT overfill oil. Overfilling
of housing with oil can create
excessive and dangerous hydraulic
pressure which can destroy the
pump and create a hazard.
Overfilling oil voids warranty.
Cooling Oil - 40.6 oz
Recommended Supplier/Grade
BP Enerpar SE100
Conoco Pale Parafn 22
Mobile D.T.E. Oil Light
Shell Canada Transformer-10
Texaco Diala-Oil-AX
Disassembly
Impeller, V-ring and Volute:
1. Disconnect power.
2. Remove cap screws (42) and remove
strainer (39) on HT model. (See Fig 7)
3. Remove cap screw (34) and washers
(35) vertically lift motor, housing and seal
plate assembly from volute (1). Clean out
volute (1) if necessary.
4. Inspect gasket (2) and replace if cut or
damaged.
5. Clean and examine impeller (38), for
cracks or breakage and replace if required.
To remove impeller (38), place a at
screwdriver in the slot of the end of the
shaft to hold the shaft stationary while
unscrewing the impeller (38).
6. Check v-ring (36) and remove if
damaged.
Service
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
Figure 4

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Power Cord & Motor:
7. Remove pipe plug (16) and drain oil
from housing.
8. Remove gland nut (19A) from housing
(32). Pull cable assembly (19) through and
disconnect the wires from the terminals.
9. Remove screws (4) and lift motor
housing (32) and rotor/stator from seal
plate (15).
10. Remove o-ring (3), replace if damaged,
11. Check motor capacitor (11) with
an Ohm meter by rst grounding the
capacitor by placing a screwdriver across
both terminals and then removing
screwdriver. Connect Ohm meter (set
on high scale) to terminals. If needle
moves to innity (∞) then drifts back,
the capacitor is good. If needle does not
move or moves to innity (∞) and does
not drift back, replace capacitor (11).
12. Inspect motor winding for shorts and
check resistance values. Check rotor for
wear. If rotor or the stator windings are
defective, the complete motor (7) must be
replaced. (Note: Stator is pressed into the
housing).
Shaft Seal:
13. Remove snap ring (6) from seal plate
(15). Remove shaft and rotor from seal
plate (15).
14. Remove seal’s (33) rotating member,
spring and retaining ring from seal plate.
Examine all seal parts, if seal faces show
signs of wear, uneven wear pattern, chips
or scratches replace entire seal.
DO NOT interchange seal components,
replace the entire shaft seal (33).
If replacing seal, remove stationary by
prying out with at screwdrive.
Bearings:
15. Examine lower bearing (5), and upper
bearing (27), if replacement is required,
remove by using a wheel puller.
Reassembly
Bearings:
1. Press bearings (5) and (27) onto shaft.
IMPORTANT! - All parts must be
clean before reassembly.
Handle seal parts with extreme
care. DO NOT damage lapped
surfaces.
Shaft Seal:
2. Clean seal cavity in seal plate (15) and
oil. Press seal’s (33) stationary member
rmly into seal plate (15), use a seal tool
or pipe. Nothing should come in contact
with the seal face except the seal tool. Be
sure the stationary is in straight.
3. Place seal’s retaining ring, spring onto
shaft. Lightly oil (Do not use grease)
shaft and inner surface of bellows.
4. With lapped surface of seal’s rotating
member facing outward, slide over shaft
using a seal tool, being carefull not to
damage seal face. Make sure spring is
seated in retaining ring and spring is
lined up on rotating member and not
cocked or resting on bellows tail.
Motor:
5. Slide rotor/shaft with bearings and
seal parts (33) into seal plate (15) until
bearing seats into seal plate. Install snap
ring (6) into seal plate (15).
6. Place spring washer (28) onto bearing
(27) and lower housing (32) and stringing
motor leads through the cord entry bore,
with motor stator onto seal plate (15).
7. Place screws (4) through seal plate
(41) into housing (32) and torque to 10
ft-lbs.
Power Cord:
8. Check power cord (19) for cracks
or damage and replace if required.
Reconnect motor leads to the cord
terminals.
9. Place power cord (19) with nylon
housing, ring, washer and gland nut into
housing (32) and tighten gland nut to
17.5 ft/lbs.
Impeller, V-ring and Volute:
10. Position v-ring (36) into seal plate (15)
until seated.
11. Clean the threads with thread locking
compound cleaner. Apply removable
Loctite® 242 or equivalent to shaft
threads. Screw impeller (38) onto the shaft
hand tight while using a screwdriver in
the slot at the end of the shaft to hold it
stationary. Rotate impeller to check for
binding.
12. Position gasket (2) on volute ange
and position impeller and motor housing
assembly on volute (1).
13. Place lock washers (35) on cap screws
(34) and screw into volute (1). Torque
to 25 ft/lbs. Check for free rotation of
impeller.
14. Rell with cooling oil, (40.6 oz).
Service
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps

11
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Repair Parts
For Repair Part Please supply: Model Number and MFG Date as shown on
Name Plate, and Part Description and Part Number as shown on Parts List.
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
Figure 5
41

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Repair Parts For Repair Part Please supply: Model Number and MFG Date as shown on
Name Plate, and Part Description and Part Number as shown on Parts List.
Figure 6
PFS411HT Series Submersible Euent, Sump & Sewage Pumps
PFS411HT

13
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Parts List
For Repair Part Please supply: Model Number and MFG Date as shown on
Name Plate, and Part Description and Part Number as shown on Parts List.
PFS411, 411HT & 421 Series Submersible Euent, Sump & Sewage Pumps
Figure 7
Gland Nut Jacket Washer
Nylon Housing
O-Ring
Terminal Pin
Holder
PFS411 & 421 Cord Set, Item #19
Supplied as an Assembly
PFS411HT Cord Set, Item #19
Supplied as an Assembly
Gland Nut Washer O-Ring
Bushing
Terminal Pin Holder
Wire Connectors

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Repair Parts For Repair Part Please supply: Model Number and MFG Date as shown on
Name Plate, and Part Description and Part Number as shown on Parts List.
PFS411, 421 & 411HT Series Submersible Euent, Sump & Sewage Pumps
ITEM QTY DESCRIPTION PFS411
PART No.
PFS421
PART No.
PFS411HT
PART No.
1 1 Volute PF089120 PF089120 ---
21Gasket PF068984 PF068984 PF068984A
3 1 Square ring PF019289 PF019289 PF019289A
4 2 Screw, Stainless --- --- ---
5 1 Bearing, 6203 - Lower PF17414 PF17414 PF17414
6 1 Snap Ring --- --- ---
71 Rotor/stator --- --- ---
9 1 Screw --- --- ---
10 1 Lockwasher --- --- ---
11 1 Capacitor, 20mfd/250V PF035864 PF035864 PF035864
15 1 Seal Plate --- --- ---
16 1 Pipe Plug --- --- ---
19 1 
Power Cord Assy. 15 Ft. PF099260 PF099261 PF100502
Power Cord Assy, 20Ft PF099260-20 PF099261-20 PF100502-20
Power Cord Assy, 30Ft PF099260-30 PF099261-30 PF100502-30
Power Cord Assy, 50Ft PF099260-50 PF099261-50 PF100502-50
25 1 Screw --- --- ---
26 1 Cord Clamp --- --- ---
27 1Bearing, 6202 - Upper PF17415 PF17415 PF17415
28 1 Spring Washer --- --- ---
32 1 Motor Housing PF93065 PF93065 PF93065
33 1 Mechanical Seal, .625”, Type “C” PF068988 PF068988 PF068988SK
34 4Screw --- --- ---
35 4Washer --- --- ---
36 1 V-ring PF068053 PF068053 PF068053A
37 1 Spacer Seal PF63PFS4103 PF63PFS4103 PF63PFS4103
38 1 Impeller PF112561 PF112561 PF089369TG
39 1 Strainer - HT --- --- 5000005
40 1 Mechanical Float 15 Ft. PF101758 --- ---
Mech. Float, 20Ft cord PF101758-XA
41 1 Vertical Float 15 Ft. PF100829 --- ---
Vert. Float, 20Ft cord PF100829-20
42 3 Cap screws - HT --- --- Cap Screws
OVERHAUL KIT
Kit includes: gasket (2), square ring (3), bearing (5), capacitor
(11), bearing (27), seal (33), spacer seal (37) PFS411-21-OHK PFS411HT-OHK
 = Overhaul Kit
 = Supplied as individual items

15
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Risk of electric shock. Always disconnect the pump from the power source before handling inspections or repairs.
Symptom Possible Cause(s) Corrective Action
Pump will not run
Blown fuse or other interruption of
power; improper voltage.
Switch is unable to move to the “turn ON” position
due to interference with the side of basin or other
obstruction
Insucient liquid level
Defective level control
Check that the unit is securely plugged in. Have an
electrican check all wiring for proper connections
and adequate voltage and capacity.
Position the pump or switch so that it has adequate
clearance for free operation.
Make sure the liquid level is allowed to rise enough
to activate level control(s).
Remove and replace level controls
Pump will not turn o
Discharge is blocked or restricted
Check valve is stuck closed or installed backwards
Gate or ball valve is closed
Total lift is beyond pump’s capability
Pump impeller is jammed or volute casing is pluged
Check the discharge line for foreign material,
including ice if discharge line passes through or
into cold areas
Remove check valve(s) and examine for freedom of
operation and proper installation
Open gate or ball valve
Try to route piping to a lower level.
If not possible, a larger pump may be required.
Consult the factory
Disconnect unit electrically. Remove the pump
from the basin. Detach the pump base and clean
the area around the impeller. Rotate impeller by
hand. Reassemble and reinstall
Pump will not turn o
Level control(s) unable to move to the “turn OFF”
position due to interference with the side of basin
or other obstacle
Defective level control
Posistion the pump or level control so that it has
adequate clearance for free operation
Remove and replace level control
Pump runs periodically when xtures are not in use
Check valve is stuck open or is leaking
Fixtures are leaking
Remove check valve(s) and examine for freedom of
operation and proper installation
Repair xtures as required to eliminate leakage
Pump operates noisily
Debris in the impeller cavity
Damaged impeller
Worn bearings
Piping attachments to building are too rigid
Remove the pump from the basin.
Detach the pump base and clean the area around
the impeller. Reassemble and reinstall
Consult the factory for information regarding
replacement of impeller
Return pump to the factory or authorized repair
station for repair
Replace a portion of the discharge line with rubber
hose or connector
NOTE: Power-Flo Pumps & Systems assumes no responsibility for damage or injury due to disassembly in the eld. Disassembly of the pumps or supplied
accessories other than at Power-Flo Pumps & Systems or its authorized service centers, automatically voids warranty.
Trouble Shooting Chart
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps

16
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
PFS411 & 421 Series Submersible Euent, Sump & Sewage Pumps
2 YEAR WARRANTY
Manufacturer warrants, to the purchaser and subsequent owner during the warranty period, new pump product
to be free from defects in material and workmanship under normal use and service, when properly used and
maintained, for a period of 2 years from date of sale. The date of sale shall be determined by a dated sales receipt
noting the model and serial number of the pump. The dated sales receipt must accompany the returned pump
if the date of the return is more than 2 years from the date of manufacturer. Product will be repaired, replaced
or remanufactured at Manufacturer’s option. No allowance will be made for shipping charges, damages, labor
or other charges that may occur due to product failure, repair or replacement. This warranty does not apply to
and there shall be no warranty for any material or product that has been disassembled without prior approval
of Manufacturer, subjected to misuse, misapplication, neglect, alteration, accident or act of God; that has not
been installed, operated or maintained in accordance with Manufacturer’s installation instructions; that has
been exposed to outside substances including but not limited to the following: sand, gravel, cement, mud, tar,
hydrocarbons, hydrocarbon derivatives (oil, gasoline, solvents, etc.), or other abrasive or corrosive substances,
wash towels or feminine sanitary products, etc. in all pumping applications. The warranty set out in the paragraph
above is in lieu of all other warranties expressed or implied; and we do not authorize any representative or other
person to assume for us any other liability in connection with our products.
Contact Manufacturer at: 1-877-24PUMPS or www.poweropumps.com, Attention: Customer Service
Department, to obtain any needed repair or replacement of part(s) or additional information pertaining
to our warranty. MANUFACTURER EXPRESSLY DISCLAIMS LIABILITY FOR SPECIAL, CONSEQUENTIAL OR
INCIDENTAL DAMAGES OR BREACH OF EXPRESSED OR IMPLIED WARRANTY; AND ANY IMPLIED WARRANTY
OF FITNESS FOR A PARTICULAR PURPOSE AND OF MERCHANTABILITY SHALL BE LIMITEDTOTHE DURATION
OF THE EXPRESSED WARRANTY.
Some states do not allow limitations on the duration of an implied warranty, so the above limitation may not apply
to you. Some states do not allow the exclusion or limitation of incidental or con sequential damages, so the above
limitation or exclusion may not apply to you. This warranty gives you specic legal rights and you may also have
other rights which vary from state to state.
NOTE: 2 Year warranty does NOT include the PFS411HT. It has a 1 Year Limited Warranty.