Power-flo PFU152 Guide

877-24PUMPS • www.poweropumps.com ISP No: PFU_b - 1/2021
INSTALLATION, SERVICE & PARTS MANUAL
Series: PFU31 • PFU51,
PFU71 • PFU102
PFU152 • PFU202
1/3, 1/2, 3/4, 1, 1-1/2, & 2HP
3450 RPM • 60 Hz
Submersible Fountain Pumps

2
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
General Safety Information
® 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. 11/2007 - 7/15, 12/15, 8/17, 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 RECONTAMINATED
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. Installations in
Decoritive Fountains or Water Features
provided for visual enjoyment MUST be
installed per ALL State and Local codes
Risk of electric shock.
To reduce risk of
electric shock, always disconnect
pump from power source before
handling. Lock out power & tag.
Do not us these
pumps in water
over 145˚F. Do not exceed manufactures
recommended maximum performance, as
this could cause the motor to overheat.
For cool operations the
suction chamber keeps
motor 2/3 submerged at all times.
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.
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.
Bronze/brass tted
pumps may contain
levels higher than considered
safe for potable water systems.
Government agencies have
determined that leaded copper
alloys should not be used in potable water
applications.
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: _________________
PFU31, PFU51, PFU71, PFU102, PFU152, PFU202 Submersible Fountain Pumps
WARNING:
CANCER AND REPRODUCTIVE HARM-
WWW.P65WARNINGS.CA.GOV

3
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Specications
PFU31, PFU51, PFU71, PFU102 Submersible Fountain Pumps
MODEL HP Hz Volts/
Ph RPM Full Load Amps
Locked
Rotor Amps
Winding Resistance
MAIN -- START
NEMA Start
Code
Cord
Type
Cord
Size
Cord
O.D.
PFU31 1/3 60 115/1 3450 8.0 21.0 1.4 -- 8.6 JSOW 16/3 0.395
PFU51 1/2 60 115/1 3450 9.5 21.0 1.0 -- 6.5 E SOW 16/3 0.395
PFU71 3/4 60 115/1 3450 12.0 28.0 0.57 -- 5.78 D SOW 16/3 0.395
PFU102 1 60 230/1 3450 7.0 21.0 2.01 -- 7.32 E SOW 16/3 0.395
Winding resistance ± 5% at terminal block. Rated operation at ± 10% voltage at motor
DISCHARGE
PFU31, 51, 71, 102
1-3/4” Outside Hose Connection,
1” NPT Inside Connection, 90° Rotation
LIQUID
TEMPERATURE 145°F (63°C) Continuous
VOLUTE Brass
INTERMEDIATE Brass
HOUSING TUBE 304 Stainless Steel
HOUSING END PIECE Brass
SCREEN 304 Stainless Steel
PUMP SUPPORTS 304 Stainless Steel
IMPELLER 1/3 & 1/2HP - Four Vane, Open, Brass
3/4 & 1 HP - Six Vane Open, Brass
SHAFT 416 Stainless Steel
O-RINGS Buna-N
HARDWARE 300 Series Stainless Steel
SEAL Single Mechanical, Carbon/Ceramic/Buna-N
POWER CORD 12 Ft.
MOTOR END BEARING Single Row, Ball, Oil Lubricated
PUMP END BEARING Single Row, Ball, Oil Lubricated
MOTOR Oil Filled, Squirrel Cage Induction,
NEMA B Design, Class H Insulation
SINGLE PHASE
Permanent Split Capacitor (PSC),
Includes Overload Protection in Motor;
Trip O Temp. 248°F (120°C)
The design of the suction chamber keeps motor 2/3 submerged at all times for
cool operation.
Vacuum Pressure Impregnation
“VPI” Sealed Insulation System
VPI motor enhancement system was developed to
greatly extend the winding life expectancy of an electric
motor. The motor stator is loaded into a pressure vessel
and immersed in the specialty selected varnish. All
gas pockets located within the stator are evacuated
under vacuum. The varnish is drawn into the stator
core, completely occupying all voids in the winding.
Following a series of processes, ending in a controlled
bake, the winding is 100% impregnated and sealed.
VPI is greatly superior to the “dip and bake” method
which may provide only 50% to 70% of eective
insulation leaving voids and air pockets. VPI provides
100% solid mass structure which provides the greatest
mechanical strength and a cooler running motor due to
superior heat dissipation.

4
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Dimensions
Performance
PFU31, PFU51, PFU71, PFU102 Submersible Fountain Pumps

5
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Specications
PFU152, PFU202 Submersible Fountain Pumps
MODEL HP Hz Volts/
Ph RPM Full Load Amps
Locked
Rotor Amps
Winding Resistance
MAIN -- START
NEMA Start
Code
Cord
Type
Cord
Size
Cord
O.D.
PFU152 1-1/2 60 230/1 3450 8.5 19.8 2.9 -- 3.14 D SOW 16/3 0.395
PFU202 260 230/1 3450 11.0 25.6 1.9 -- 2.32 D SOW 16/3 0.395
Winding resistance ± 5% at terminal block. Rated operation at ± 10% voltage at motor
DISCHARGE
PFU152, 202
2” Outside Hose Connection,
1-1/4” NPT Inside Connection, 90° Rotation
LIQUID
TEMPERATURE 145°F (63°C) Continuous
VOLUTE Brass
INTERMEDIATE Brass
HOUSING TUBE 304 Stainless Steel
HOUSING END PIECE Brass
SCREEN 304 Stainless Steel
PUMP SUPPORTS 304 Stainless Steel
IMPELLER Six Vane Open, Brass
SHAFT 416 Stainless Steel
O-RINGS Buna-N
HARDWARE 300 Series Stainless Steel
SEAL Single Mechanical, Carbon/Ceramic/Buna-N
POWER CORD 12 Ft.
MOTOR END BEARING Single Row, Ball, Oil Lubricated
PUMP END BEARING Single Row, Ball, Oil Lubricated
MOTOR Oil Filled, Squirrel Cage Induction,
NEMA B Design, Class H Insulation
SINGLE PHASE
Permanent Split Capacitor (PSC),
Includes Overload Protection in Motor;
Trip O Temp. 248°F (120°C)
The design of the suction chamber keeps motor 2/3 submerged at all times for
cool operation.
Vacuum Pressure Impregnation
“VPI” Sealed Insulation System
VPI motor enhancement system was developed to
greatly extend the winding life expectancy of an electric
motor. The motor stator is loaded into a pressure vessel
and immersed in the specialty selected varnish. All
gas pockets located within the stator are evacuated
under vacuum. The varnish is drawn into the stator
core, completely occupying all voids in the winding.
Following a series of processes, ending in a controlled
bake, the winding is 100% impregnated and sealed.
VPI is greatly superior to the “dip and bake” method
which may provide only 50% to 70% of eective
insulation leaving voids and air pockets. VPI provides
100% solid mass structure which provides the greatest
mechanical strength and a cooler running motor due to
superior heat dissipation.

6
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Dimensions
Performance
PFU152, PFU202 Submersible Fountain Pumps

7
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
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.
Location
The design of these pumps allow for
use in decorative water displays. These
pumps should be set in the bottom
of a pit in the horizontal position to
insure submergence at all times. In the
horizontal position, the built-in suction
trap will prevent the unit from pumping
the pit dry, keeping the motor 2/3
submerded, providing adequate cooling.
Pump may be mounted in the vertical
position, but could expose motor
housing if water level is pumped down.
This could cause the motor to overheat
and trip the built-in automatic overload
protector.
Discharge Piping
This is a high capacity low head pump.
It is important to use as few pipe ttings
as posible and of adequate size to
hold pressure loss due to friction to a
minimum. All models have 1-3/4 inch
hose connection discharge and can be
rotated in 90° increments.
WARNING ! - Disconnect power
from pump before handling
or servicing Injury, electrical
shock or death could result.
Pump MUST be grounded in
accordance with the NEC or
CEC and all state province,
local codes and ordinances.
This pump is NOT for use in
swimming pools.
Electrical Connections
The PFU motor is an oil lled, single
phase permanent split capacitor
type with built in automatic overload
protector and does not require a control
box. Connect the white and black wires
of the motor lead to the two line leads
from the power source fused disconnect
switch or breaker box. Connect the green
wire to a ground. See table below for,
cable sizes to reach from power souce to
motor leads, and fuse sizes.
CORD & FUSE SIZES
MAXIMUM CORD LENGTH IN FEET
CORD
SIZE
1/3HP
115V
FUSE:
20 AMP
1/2HP
115V
FUSE:
25 AMP
3/4HP
115V
FUSE:
30 AMP
1HP
230V
FUSE:
25 AMP
14 GA. 70 55 40 100
12 GA. 120 95 55 145
10 GA. 220 145 95 240
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
to prevent ooding. DO NOT USE THE
POWER CABLE TO LIFT PUMP.
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.
TEMPERATURE SENSOR ELECTRICAL
RATINGS
Volts Continuous
Amperes
Inrush
Amperes
110-120 3.00 30.0
220-240 1.50 15.0
Wire Size:
If longer power cable is required consult
a qualied electrician for proper wire
size.
Receiving & Installation
PFU31, PFU51, PFU71, PFU102, PFU152, PFU202 Submersible Fountain Pumps

8
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
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. Check
rotation on three phase units by
momentarily applying power and
observe the “kickback”. Kickback
should always be in a counter-
clockwise direction as viewed
from motor end or opposite to
impeller rotation. Incorrect rotation
for Single-Phase pumps is unlikely.
If the rotation is incorrect contact
factory.
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.
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 and clean screen if required.
d). Inspect seal for wear or leakage.
Servicing
NOTE: Item numbers in ( ) refer to Figures
3 & 4.
WARNING ! - Before any service
work is done, disconnect and
lock out electrical power to
pump.
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 (32). With a ashlight, visually
inspect the oil in the housing tube (27)
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
above all internal componentry.
Oil Testing
• Drain oil into a clean, dry container by
placing pump on it’s end, remove pipe
plug (32), from housing tube (27).
• 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 (8), gland nut (17),
o-rings (23), and pipe plug (32), 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.
Oil Replacement - Set unit upright and
(drain oil, if not already done), rell with
new cooling oil as per table below.
An air space must remain in the top of
the housing tube when pump is placed
with volute end on bench, to compensate
for oil expansion. Fill until capacitor is
covered when viewing through ll plug
hole. When relling with oil after servicing
the shaft seal (8), a pressure test should
be preformed. If shaft seal (8) was not
serviced, then apply pipe sealant and
replace the pipe plug (32).
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
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
Pressure Test - Oil should be at normal
level. Remove pipe plug (32) from housing
end (19). Apply pipe sealant to pressure
gauge assembly and tighten into hole.
Pressurize housing to 6 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” /oil seepage
is observed, slowly bleed the pressure
and remove the gauge assembly. Replace
pipe plug using sealant. The 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 6 P.S.I.
Pre-Operation & Service
PFU31, PFU51, PFU71, PFU102, PFU152, PFU202 Submersible Fountain Pumps

9
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Disassembly & Assembly
Impeller and Volute:
Disconnect power. Disconnect discharge
piping. Remove screen (14) by removing
springs (33) and lifting o. Remove cap
screws (29) and pull volute (1) and gasket
from bearing sleeve (9). Remove set screw
(3), unscrew counter-clockwise impeller
(2) from motor shaft. Replace impeller if
worn or pitted.
Reassemble by placing shims (5) on shaft,
to ensure proper clearance between
impeller (2) and bearing sleeve (9). The
clearance should be approximately .03
inches. Screw impeller (2) clockwise onto
shaft and place set screw (3) in place and
tighten. Place gasket (30) and volute (1)
onto bearing sleeve (9) and insert cap
screws in place and tighten. Replace
screen (14) with springs (33).
IMPORTANT:
For units Dated Jan. 2011 and newer, with
Ball Bearing Design, continue on.
For unites prior to Jan. 2011 with sleeve
design, see pages 11 through 14.
Motor & Shaft Seal:
Remove screen, volute and impeller
as previously stated and drain oil from
housing. Loosen gland nut (17) and slide
it back on cord (18). Remove hex nuts
(20) and lockwashers (21) from studs (28)
and pull housing end (19) from housing
tube (27). Disconnect cord set (18) and
check for damage or cracks, replace if
required. Remove grommet (15), friction
rings (16) from housing end (19), replace
if damaged. Pull housing tube (27) from
bearing sleeve (9). Remove seal spacer
(31) and v-ring (6) from shaft. Loosen
motor screws and pull bearing sleeve (9)
with shaft seal (8) from motor.
IMPORTANT that you mark location of
overload in relation to bearing sleeve
(9). Remove retaining ring (7) and press
seal assembly (8) out of bearing sleeve.
Replace complete seal if seal shows
signs of uneven wear on seal faces,
chips, or scratches. If replacing seal,
remove stationary by prying out with at
screwdrive.
Examine o-rings (23) and replace if
damaged. Check motor capacitor (12)
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 (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 must be replaced.
To test the overload, check the continuity
between the black and white wires.
IMPORTANT! - All parts must be
clean before reassembly.
Handle seal parts with extreme
care. DO NOT damage lapped
surfaces.
To reassemble, clean seal cavity in bearing
sleeve (9) and oil. Lightly oil stationary
member of seal, and with lapped surface
facing motor, press stationary member
with seal pusher tool into bearing sleeve
(9).
Lightly oil (Do not use grease) inner
surface of rotating member. With the
lapped surface facing inward, place
rotating member into bearing sleeve (9)
until it seats against stationary member.
Place the spring and retaining ring onto
rotating member. Press bearing (39) into
bearing sleeve (9) and snap ring (7) into
bearing sleeve (9).
Lightly oil (Do not use grease) the shaft
on motor (10). Assemble bearing sleeve
(9) onto motor (10), being carfull not to
damage seal. locate overload as noted (or
at the 11 o’clock position as viewed from
motor end), with the four motor bolts.
Place capacitor (12) into bracket (25) if
removed and secure with screw. Connect
ag terminal from motor and terminal
boot (13) to capacitor (12).
Place one o-ring (23) into groove on
bearing sleeve (9) being careful not to
damage the o-ring. Slide housing tube
(27) onto bearing sleeve (9). Place o-ring
(23) into groove on housing end piece
(19) and place end piece onto housing
tube (27). Place pump support (22) onto
lower studs (28) and lockwashers (21) and
hex nuts (20) onto studs and tighten.
Place v-ring (6) and seal spacer (31) onto
shaft until seated. Assemble sceen, volute
and impeller as described.
Service
Figure 1
PFU31, PFU51, PFU71, PFU102, PFU152, PFU202 Submersible Fountain Pumps

10
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Power Cable Connection
Place gland nut (17), one friction ring
(12), grommet (15) onto cord and slide
cord through housing end piece (19).
Make wire connections using terminal
connectors (24). Place o-ring (23) into
groove on housing end piece (19) and
slide end piece onto housing tube (27)
being careful not to damage o-ring. Place
pump support (22) onto lower studs
(28) and place lockwashers (21) and hex
nuts (20) onto studs and tighten. Insert
grommet and friction ring into housing
end piece (19). Apply pipe sealant to
gland nut (17), screw into end piece and
torque gland nut to 17.5 ft. lbs to prevent
water leakage.
Service
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 3
Figure 2 - 115 & 230 Volt, 1Ph
POWER CABLE MOTOR LEAD
Green (Ground) Green
T1 - Black Straight Connector
T2 - White Straight Connector
Capacitor Flag Connector
Capacitor Flag Connector
Repair Parts - Bearing Design
For Units from Jan. 2011
PFU31, PFU51, PFU71, PFU102, PFU152, PFU202 Submersible Fountain Pumps
Date Code: G F
The second letter determens the year.
A thru E = 2007 - 2011
F and up = 2012 - and up

11
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Repair Parts - Bearing Design
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 4
PFU31, PFU51, PFU71, PFU102, PFU152, PFU202 Submersible Fountain Pumps
For Units from Jan. 2011

12
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Ref. No. Qty Name Part Numbers
PFU31 PFU51 PFU71 PFU102
1 1 Volute, Brass PF093277 PF093277 PF093277 PF093277
21Impeller, Brass PF024331 PF024332 PF024333 PF024334
3 1 Slotted set screw 7/16-20, Stainless PF026155 PF026155 PF026155 PF026155
41 Lockwasher, 7/16 Stainless    
5 6 Shims, impeller, Stainless PF024336 PF024336 PF024336 PF024336
6 1 V-ring, Buna-N PF068053 PF068053 PF068053 PF068053
71Retaining ring PF023702 PF023702 PF023702 PF023702
81Shaft Seal, C/C/B, Type 21, 5/8” PF068988 PF068988 PF068988 PF068988
9 1 *Bearing sleeve, Brass PF093279B PF093279B PF093279B PF093279B
10 1 Motor (see note) PF023254 PF023255 PF024308 PF023257
11 1 Self Tapping Screw, 8-32 x .31” Lg    
12 1 Capacitor 20mfd 370V PF070963 PF070963 ---- ----
Capacitor, 25mfd 370V ---- ---- PF070965 PF070965
13 1 Terminal Boot, Buna-N PF034322 PF034322 PF034322 PF034322
14 1 Screen, Stainless PF023699 PF023699 PF023699 PF023699
15 1 Grommet, Brass PF014896 PF014896 PF014896 PF014896
16 2Friction ring, Plastic PF085673 PF085673 PF085673 PF085673
17 1 Gland nut, Stainless PF026857 PF026857 PF026857 PF026857
18 1 Cord set, (includes 15,16,17, 18, 44, 45, 46) PF086039 PF086039 PF086039 PF086039
19 1 Housing end, Brass PF026850 PF026850 PF026850 PF026850
20 10 Hex nut 1/4-20, Stainless    
21 10 Lockwasher 1/4”    
22 2 Pump support PF023316 PF023316 PF023316 PF023316
23 2O-ring, Buna-N PF016068 PF016068 PF016068 PF016068
24 2 Terminal Connector, Plastic PF079318 PF079318 PF079318 PF079318
25 1 Capacitor bracket, Steel PF039858 PF039858 PF039858 PF039858
26
83.5 oz Cooling Oil - PFU31, 1/3HP
Refer to Chart,
Souce Locally
83.5 oz Cooling Oil - PFU51, 1/2HP
79.5 oz Cooling Oil - PFU71, 3/4HP
67.5 oz Cooling Oil - PFU102, 1HP
27 1 Housing tube, Stainless PF088356 PF088356 PF088356 PF088356
28 4 Studs, 1/4-20 x 11.812” Lg, Stainless PF023695 PF023695 PF023695 PF023695
29 10 Hex Hd Screws 1/4-20 x .625” Lg, SS    
30 1 Gasket, Casing, Buna-N PF024335 PF024335 PF024335 PF024335
32 1 Pipe Plug 1/8” NPT, Stainless    
33 4Screen Spring PF023501 PF023501 PF023501 PF023501
39 2*Bearing, #6203 PF17414 PF17414 PF17414 PF17414
44 1 Cable Sheath PF056700 - Cord Kit
Includes Items; 15, 16, 17, 44, 45, 46
45 1 Nylon Sleeve
46 1 Nylon Plug
OVERHAUL KIT
Includes: Items 3, 5, 6, 7, 8, 23, 30, 33, 35 (See pg 17), 39 PFU-OHK
Note: Item 10 Motor includes 10 & 39, (36, 37, 38, 40, 41, 42 & 43 shown on drawing but not listed)
Parts List - Bearing Design 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.
PFU31, PFU51, PFU71, PFU102 Submersible Fountain Pumps
 = Aquire standard hardware locally.
 = Overhaul Kit
 = Supplied as individual items
(*) - Design change Jan. 2011 - Removed bushing #35 and replaced with an additional bearing
#39, also changed item #9.

13
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Ref. No. Qty Name Part Numbers
PFU152 PFU202
1 1 Volute, Brass PF65PFU1501 PF65PFU1501
21Impeller, Brass PF65PFU1505 PF65PFU1504
3 1 Slotted set screw 7/16-20, Stainless PF026155 PF026155
41 Lockwasher, 7/16 Stainless  
5 6 Shims, impeller, Stainless PF441219021 PF441219021
6 1 V-ring, Buna-N PF068053 PF068053
71Retaining ring PF023702 PF023702
81Shaft Seal, C/C/B, Type 21, 5/8” PF068988 PF068988
9 1 Bearing sleeve, Brass PF65PFU1503 PF65PFU1503
10 1 Motor (see note) PF080150C07 PF080200C07
11 1 Self Tapping Screw, 8-32 x .31” Lg  
12 1 Capacitor 45mfd 370V PF522045720 PF522045720
13 1 Terminal Boot, Buna-N PF034322 PF034322
14 1 Screen, Stainless PF61PFU1502 PF61PFU1502
15 1 Grommet, Brass PF014896 PF014896
16 2Friction ring, Plastic PF085673 PF085673
17 1 Gland nut, Stainless PF026857 PF026857
18 1 Cord set, (includes 15, 16, 17 & 18) PF086039 PF086039
19 1 Housing end, Brass PF65PFU1502 PF65PFU1502
20 10 Hex nut 1/4-20, Stainless  
21 10 Lockwasher 1/4”  
22 2 Pump support PF61PFU1503 PF61PFU1503
23 2O-ring, Buna-N, 156 ID x 3.5mm PF63PFU1501 PF63PFU1501
24 2 Terminal Connector, Plastic PF079318 PF079318
25 1 Capacitor bracket, Steel PF039858 PF039858
26 83.5 oz Cooling Oil - PFU152, 1-1/2HP Refer to Chart,
Souce Locally
79.5 oz Cooling Oil - PFU202, 2HP
27 1 Housing tube, Stainless PF61PFU1501 PF61PFU1501
28 4 Studs, 1/4-20 x 11.812” Lg, Stainless PF023695 PF023695
29 10 Hex Hd Screws 1/4-20 x .625” Lg, SS  
30 1 Gasket, Casing, Buna-N PF024335 PF024335
31 1 Sleeve, cord PF63PFS1008 PF63PFS1008
32 1 Pipe Plug 1/8” NPT, Stainless  
33 4Screen Spring PF023501 PF023501
39 2*Bearing, #6203Z PF62B6203Z1 PF62B6203Z1
44 1 Cable Sheath PF056700 - Cord Kit
Includes Items; 15, 16, 17, 44, 45, 46
45 1 Nylon Sleeve
46 1 Nylon Plug
OVERHAUL KIT
Includes: Items 3, 5, 6, 7, 8, 23, 30, 33, 39 PFU2-OHK
Note: Item 10 Motor includes 10 & 39, (36, 37, 38, 40, 41, 42 & 43 shown on drawing but not listed)
Parts List - Bearing Design
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.
PFU152, PFU202 Submersible Fountain Pumps
 = Aquire standard hardware locally.
 = Overhaul Kit
 = Supplied as individual items

14
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
PFU31, PFU51, PFU71, PFU102 Submersible Fountain Pumps
For Units previous to Jan. 2011
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.
Repair Parts - Sleeve Design
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.
Date Code: G F
The second letter determens the year.
A thru E = 2007 - 2011
F and up = 2012 - and up

15
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
PFU31, PFU51, PFU71, PFU102 Submersible Fountain Pumps
Motor & Shaft Seal:
Remove screen, volute and impeller
as previously stated and drain oil from
housing. Loosen gland nut (17) and slide
it back on cord (18). Remove hex nuts
(20) and lockwashers (21) from studs (28)
and pull housing end (19) from housing
tube (27). Disconnect cord set (18) and
check for damage or cracks, replace if
required. Remove grommet (15), friction
rings (16) from housing end (19), replace
if damaged. Pull housing tube (27) from
bearing sleeve (9). Remove seal spacer
(31) and v-ring (6) from shaft. Loosen
motor screws and pull bearing sleeve (9)
with shaft seal (8) from motor.
IMPORTANT that you mark location of
overload in relation to bearing sleeve (9).
Remove retaining ring (7) and press
seal assembly (8) out of bearing sleeve.
Replace complete seal if seal shows
signs of uneven wear on seal faces,
chips, or scratches. If replacing seal,
remove stationary by prying out with at
screwdrive.
Examine o-rings (23) and replace if
damaged. Check motor capacitor (12)
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 (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 must be
replaced. To test the overload, check the
continuity between the black and white
wires.
Assemble bearing sleeve (9) onto motor
(10), locating overload as noted (or at the
11 o’clock position as viewed from motor
end), with the four motor bolts. Place
capacitor (12) into bracket (25) if removed
and secure with screws, Connect ag
terminal from motor and terminal boot
(13) to capacitor (12).
Place one o-ring (23) into groove on
bearing sleeve (9) being careful not to
damage the o-ring. Slide housing tube
(27) onto bearing sleeve (9). Place o-ring
(23) into groove on housing end piece
(19) and place end piece onto housing
tube (27). Place pump support (22) onto
lower studs (28) and lockwashers (21) and
hex nuts (20) onto studs and tighten.
IMPORTANT! - All parts must be
clean before reassembly.
Handle seal parts with extreme
care. DO NOT damage lapped
surfaces.
To reassemble, clean seal cavity in bearing
sleeve (9) and oil. Insert seal (8) retaining
ring along with spring onto motor shaft
until seated.
Lightly oil (Do not use grease) shaft and
inner surface of rotating member and
assembly tool bullet. Place the bullet
tool over shaft threads and with lapped
surface facing out, press rotating member
with seal pusher tool onto shaft and into
bearing sleeve (9) until it seats against
shoulder of shaft.
Lightly oil (Do not use grease) stationary
member of seal, and with lapped surface
facing motor, press stationary member
with seal pusher tool into bearing sleeve
(9) until it seats against rotating member.
Replace retaining ring (7), place v-ring
(6) and seal spacer (31) onto shaft until
seated. Assemble sceen, volute and
impeller as described.
Service - Sleeve Design
For Units previous to Jan. 2011
Figure 1

16
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
Repair Parts - Sleeve Design 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 4
For Units previous to Jan. 2011
PFU31, PFU51, PFU71, PFU102 Submersible Fountain Pumps

17
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
PFU31, PFU51, PFU71, PFU102 Submersible Fountain Pumps
Ref. No. Qty Name Part Numbers
PFU31 PFU51 PFU71 PFU102
1 1 Volute, Brass PF093277 PF093277 PF093277 PF093277
21Impeller, Brass PF024331 PF024332 PF024333 PF024334
3 1 Slotted set screw 7/16-20, Stainless PF026155 PF026155 PF026155 PF026155
41 Lockwasher, 7/16 Stainless    
5 6 Shims, impeller, Stainless PF024336 PF024336 PF024336 PF024336
6 1 V-ring, Buna-N PF068053 PF068053 PF068053 PF068053
71Retaining ring PF023702 PF023702 PF023702 PF023702
81Shaft Seal, C/C/B PF068988 PF068988 PF068988 PF068988
9 1 Bearing sleeve, Brass PF093279 PF093279 PF093279 PF093279
10 1 Motor (see note) PF023254 PF023255 PF024308 PF023257
11 1 Self Tapping Screw, 8-32 x .31” Lg    
12 1 Capacitor 20mfd 370V PF070963 PF070963 ---- ----
Capacitor, 25mfd 370V ---- ---- PF070965 PF070965
13 1 Terminal Boot, Buna-N PF034322 PF034322 PF034322 PF034322
14 1 Screen, Stainless PF023699 PF023699 PF023699 PF023699
15 1 Grommet, Brass PF014896 PF014896 PF014896 PF014896
16 2Friction ring, Plastic PF085673 PF085673 PF085673 PF085673
17 1 Gland nut, Stainless PF026857 PF026857 PF026857 PF026857
18 1 Cord set, (includes 15, 16, 17 & 18) PF086039 PF086039 PF086039 PF086039
19 1 Housing end, Brass PF026850 PF026850 PF026850 PF026850
20 10 Hex nut 1/4-20, Stainless    
21 10 Lockwasher 1/4”    
22 2 Pump support PF023316 PF023316 PF023316 PF023316
23 2O-ring, Buna-N PF016068 PF016068 PF016068 PF016068
24 2 Terminal Connector, Plastic PF079318 PF079318 PF079318 PF079318
25 1 Capacitor bracket, Steel PF039858 PF039858 PF039858 PF039858
26
83.5 oz Cooling Oil - PFU31, 1/3HP
Refer to Chart,
Souce Locally
83.5 oz Cooling Oil - PFU51, 1/2HP
79.5 oz Cooling Oil - PFU71, 3/4HP
67.5 oz Cooling Oil - PFU102, 1HP
27 1 Housing tube, Stainless PF088356 PF088356 PF088356 PF088356
28 4 Studs, 1/4-20 x 11.812” Lg, Stainless PF023695 PF023695 PF023695 PF023695
29 10 Hex Hd Screws 1/4-20 x .625” Lg, SS    
30 1 Gasket, Casing, Buna-N PF024335 PF024335 PF024335 PF024335
31 1 Seal spacer, Buna-N PF025756 PF025756 PF025756 PF025756
32 1 Pipe Plug 1/8” NPT, Stainless    
33 4Screen Spring PF023501 PF023501 PF023501 PF023501
35 1 Brass Bushing PF65PFUIN01 PF65PFUIN01 PF65PFUIN01 PF65PFUIN01
39 1 Bearing, #6203 PF17414 PF17414 PF17414 PF17414
OVERHAUL KIT
Includes: Items 3, 5, 6, 7, 8, 23, 30, 33, 35, 39 PFU-OHK
Note: Item 10 Motor includes 10, 36, 37, 38, 39, 40, 41, 42 & 43
Parts List - Sleeve Design
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.
 = Aquire standard hardware locally.
 = Overhaul Kit
 = Supplied as individual items
For Units previous to Jan. 2011

18
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 or pump uid
1. Poor electrical connection, blown fuse, tripped
breaker or other interruption of power;
improper power supply
2. Defective motor
3. Insucient liquid level
13. Debris plugging screen and suction intake
1. Check all electrical connections for security.
Have electrician measure current in motor leads,
if current is within ± 20% of locked rotor Amps,
impeller is probably locked. If current is 0,
overload may be tripped. Remove power, allow
pump to cool, then re-check current.
2. Check winding insulation (Megger Test) and
winding resistance. If check is outside of range,
dry and re-check. If still defective, replace per
service instructions.
3. Make sure liquid level is above the pump
4. Re-check all sizing calculations to determine
proper pump size.
5. Check discharge line for restrictions, including
ice if line passes through or into cold areas.
6. Remove and examine check valve for proper
installation and freedom of operation
7. Open valve
8. Check impeller for freedom of operation,
security and condition. Clean impeller cavity
and inlet of any obstruction
9. Loosen union slightly to allow trapped air to
escape.
10. Repair xtures as required to eliminate leakage
11. Check pump temperature limits and uid
temperature
12. Replace portion of discharge pipe with exible
connector or tighten existing piping.
13. Check screen and/or suction inlet.
Pump hums but doesn’t run
1. Incorrect low voltage
8. Impeller jammed or loose on shaft, or inlet
plugged
Pump delivers insucient capacity
1. Incorrect low voltage
4. Ecessive inow or pump not properly sized for
application
5. Discharge restricted
6. Check valve partially closed or installed backwards
7. Shut-o valve closed
8. Impeller jammed or loose on shaft, or inlet
plugged
9. Pump may be air locked causing pump not to ow
10. Piping xtures leaking or discharge before the
nozzle
13. Suction restricted
Pump shuts o and turns on independent of
switch, (trips thermal overload protector).
CAUTION! Pump may start unexpectedly.
Disconnect power supply.
1. Incorrect low voltage
4. Ecessive inow or pump not properly sized for
application
8. Impeller jammed or loose on shaft, or inlet
plugged
11. Excessive water temperature
Pump operates noisily or vibrates excessively
2. Worn bearings, motor shaft bent
8. Debris in impeller cavity or broken impeller
12. Piping attachments to building structure too
loose or rigid
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
PFU31, PFU51, PFU71, PFU102, PFU152, PFU202 Submersible Fountain Pumps

19
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
PFU31, PFU51, PFU71, PFU102, PFU152, PFU202 Submersible Fountain Pumps
Notes:

20
Power-Flo Pumps & Systems • 877-24PUMPS • www.poweropumps.com
LIMITED WARRANTY
Manufacturer warrants, to the immediate purchaser and subsequent initial owner during the warranty period,
every new pump to be free from defects in material and workmanship under normal use and service, when properly
used and maintained, for a period of eighteen (18) months from date of manufacture or twelve (12) months from
date of installation (which ever comes rst). Failure due to wear due to excessive abrasives is not covered. The
initial owner is the purchaser who rst uses the pump after its initial installation, or for non-permanent installation,
the rst owner who uses the pump. The date of installation 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. 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 LIMITED TO THE 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 consequential 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.
PFU31, PFU51, PFU71, PFU102, PFU152, PFU202 Submersible Fountain Pumps