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.
• Risk of electric shock. To reduce risk of
electric shock, always disconnect pump
from power source before handling.
Lock out power & tag.
• Keep clear of suction and discharge
openings.
• Do not insert ngers in pump with
power connected.
• Always wear eye protection when
working on pumps.
• Ground Fault Circuit Interrupter (GFCI)
to be used with plug-in type power
cord.
• 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.
• Installation must be in accordance
with the National Electric Code and all
applicable state and local codes.
• Installation and servicing is to be
conducted by quali ed personnel.
• These pumps are NOT to be installed
in locations classi ed as hazardous in
accordance with the National Electric
Code, ANSI/NFPA 70.
Model Number
MFG Date
AMPS VOLTAGE
PHASE
60 Hz HP
• Do not us these pumps in water over
104˚F. Consult Power-Flo for high
temperature pump models.
• The Uniform Plumbing Code (UPC)
states that sewage systems shall have
an audio and visual alarm that signals
a malfunction of the systems that is
required to reduce the potential for
property damage.
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 Models3 Phase Models
Amps:Amps L1-2:Volts L1-2:
Volts:Amps L2-3:Volts L2-3:
Amps L3-1:Volts L3-1:
877-24 PUMPS
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® 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. 3/08
2
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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).
Installation
These pumps are recommended for
use in a sump, basin or lift station.
The sump, basin or lift station shall be
sealed and vented in accordance with
local plumbing codes. This pump is
designed to pump sewage, 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.
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.
Pumps are most commonly installed
in simplex or duplex stations or basins
with a slide rail system, which allows
the pump(s) to be installed or removed
without requiring personnel to enter
the station, or resting on the basin oor.
Liquid Level Controls
The level control(s) should be mounted
on the discharge piping, a cable rack
or oat pole. 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. 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
10 inches above the basin oor.
Electrical Connections
Power cable:
The power cable mounted to the pump
must not be modied in any way except
for shortening to a specic 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.
Recommended
Submergence Level
Minimum
Submergence Level
10”
Bottom of Feet
Figure 1
6
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 backow
into the sump. The shut-o valve is
used to manually stop system ow
during pump servicing.
Power-Flo Pumps & Systems • 877-24PUMPS • www.power opumps.com
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.
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
VoltsContinuous
Amperes
110-1203.0030.0
220-2401.5015.0
440-4800.757.5
6000.606.0
Wire Size:
If longer power cable is required consult
a quali ed electrician for proper wire
size.
Inrush
Amperes
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.
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, bearings and shaft seal
for wear or leakage.
Servicing
NOTE: Item numbers in ( ) refer to Figures
6 through 9.
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 (20) from housing (4). With a
ashlight, visually inspect the oil in the
housing (4) 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 (20), from housing (4).
• 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), rell 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 relling with oil. To
locate the leak, perform a pressure test.
After leak is repaired, dispose of old oil
properly, and rell with new oil.
Pressure Test (If oil has been drained)
Remove pipe plug (20) from housing (4).
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”.
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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 (20) from housing (4).
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.
Oil Replacement - Set unit upright and
rell 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 (20)
then assemble to housing (14.
DO NOT overll oil. Overlling
of housing with oil can create
excessive and dangerous hydraulic
pressure which can destroy the
pump and create a hazard.
5. Remove washer (15) and v-gasket (16)
and remove if damaged.
Power Cord - PFSE1594, 2094, 2044:
6. Remove gland nut (23), friction ring
(24), grommet (25) and friction ring (24)
from motor housing (4). Pull cord through
and disconnect the wires from the
terminals (28).
Power Cord - PFSE1524, 2024, 3024,
3094 & 3044
7. Remove cap screws (36) and washers
(37), lift conduit box and cable assy (33)
from motor housing (4). Disconnect the
wires from the terminals (28). Remove
o-ring (35) replace if damaged.
Motor & Capacitor:
8. Remove screws (17) and lift motor
housing (4) from seal plate (3).
9. Remove o-ring (18), replace if damaged.
Figure 2
Pressure builds up extremely
fast, increase pressure by
“TAPPING” air nozzle. Too much
pressure will damage seal. DO
NOT exceed 10 P.S.I.
Disassembly
Impeller and Volute:
1. Disconnect power.
2. Remove hex nuts (9), vertically lift motor
housing and seal plate assembly from
volute (1). Clean out volute if necessary.
3. Inspect o-ring (19) and replace if cut or
damaged.
4. Clean and examine impeller (2), for
cracks or breakage and replace if required.
To remove impeller (2), remove impeller
nut (12) and washer (13). With a wheel
puller, pull impeller straight o shaft and
remove key (14).
10. Remove motor bolts, lift motor stator
assembly from seal plate (3).
11. On Single Phase units only. Check
motor capacitor (34) 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 innity (∞)
then drifts back, the capacitor is good. If
needle does not move or moves to innity
(∞) and does not drift back, replace
capacitor (34).
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.
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13. Unscrew conduit bushing (29) from
seal plate (3) and lift motor rotor, shaft,
bearing (8), rotating member of seal (6),
washer (30) and conduit bushing (29)
from seal plate (3). See Figure 3.
14. Remove seal parts (6) from shaft.
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 (6). If replacing seal,
remove stationary from seal plate (3) by
prying out with at screwdrive.
Reassembly:
IMPORTANT! - All parts must be
clean before reassembly.
Handle seal parts with extreme
care. DO NOT damage lapped
surfaces.
Shaft Seal:
1. To reassemble, clean seal cavity in seal
plate (3) and oil.
2. Press seal’s (6) stationary member
rmly into seal plate (3), 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 conduit bushing (29) and washer
(30) onto shaft. Press lower bearing (8)
onto shaft.
4. Place seal’s (6) retaining ring and
spring onto shaft. Lightly oil (Do not use grease) shaft and inner surface of
bellows.
5. With lapped surface of 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.
Bearing & Motor:
6. Slide rotor/shaft with bearing (8) and
seal parts (6) into seal plate (3) until
bearing seats into seal plate and tighten
conduit bushing (29) into seal plate (3).
Place stator over rotor, lining up motor
bolts with holes in seal plate (3). Insert
motor bolts and torque to 17 inch pounds.
7. On Single phase units, connect
capacitor (34) to motor wires. See Figure 5.
8. On models PF1594, 2094 & 2044,
place gland nut (23), one friction ring (24),
grommet (25) and one friction ring (24)
onto cord (22) and slide cord through hole
in motor housing (4) (See Figure 4). Make
wire connections per Figure 5.
9. On models PFSE1524, 2024, 3024, 3094 & 3044, place all motor leads above
motor. Place o-ring (18) on seal plate (3)
and lower motor housing (4) onto seal
plate (3).
10. Place socket head screws (17) through
seal plate into motor housing and torque
to 60 inch pounds.
Impeller & Volute:
11. Install v-gasket (16) and impeller
washer (15) over shaft, and into seal plate
(3).
12. Install impeller (2) by appling a thin
lm of oil to motor shaft and slide impeller
straight onto shaft, keeping keyways lined
up. Drive key (14) into keyway.
Figure 3
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13. Place washer (13) and impeller nut (12)
onto shaft and torque to 40 ft lbs. Rotate
impeller to check for binding.
14. Place o-ring (19) onto volute (1).
15. Lower motor housing and seal plate
assembly onto volute (1). Apply thread
locking compound to studs (9) and place
hex nuts (4) onto studs and torque to 24
ft. lbs.
16. Pull wires through large opening
in motor housing (4) an connect wires
with cord (22) in Conduit box (33) per
schematic in Figure 5.
17. Re ll with cooling oil and place o-ring
(35) and conduit box (33)onto motor
housing (4). Place cap screws (36) and
washers (37) through conduit box into
motor housing and tighten to 16 ft lbs.
Figure 5 - 480 Volt AC, 3Ph
Models: PFSE1544, PFSE2044, PFSE3044
Figure 4
Cable Assembly:
18. For ALL Models - Check power cord
(22) for cracks or damage and replace
if required. Insert one friction ring (24),
grommet (25), one friction ring (24), and
gland nut (23) into motor housing (4) or
conduit box & cable assembly (33) and
torque gland nut (23) to 15 ft lbs.
19. on models PF1594, 2094 & 2044, re ll
with with cooling oil and replace pipe
plug (20).
Figure 5 - 120/240 Volt AC, 1Ph
Models: PFSE1524, PFSE2024, PFSE3024
Power Cable Motor Lead Number
Green (Ground) Green
Black 1
White 2
Flag Terminal Capacitor
Flag Terminal Capacitor
Figure 5 - 200/240 Volt AC, 3Ph
Models: PFSE1594, PFSE2094, PFSE3094
Power Cable Motor Lead Number
Green (Ground) Green
Black 1 & 7
Red 2 & 8
White 3 & 9
4, 5 & 6 Together
Power Cable Motor Lead Number
Green (Ground) Green
Black 1
Red 2
White 3
4 & 7 Together
5 & 8 Together
6 & 9 Together
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Power-Flo Pumps & Systems • 877-24PUMPS • www.power opumps.com
Page 11
PFSE1594, 1544, 2094, 2044 Sewage Pumps
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
Power-Flo Pumps & Systems • 877-24PUMPS • www.power opumps.com
Figure 6
11
Page 12
PFSE1594, 1544, 2094, 2044 Sewage Pumps
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.
12
Figure 7
Power-Flo Pumps & Systems • 877-24PUMPS • www.power opumps.com
Page 13
PFSE1594, 1544, 2094, 2044 Sewage Pumps
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.
Risk of electric shock. Always disconnect the pump from the power source before handling inspections or repairs.
SymptomPossible Cause(s)Corrective Action
1. Poor electrical connection, blown fuse, tripped
breaker or other interruption of power;
improper power supply
2. Motor or switch inoperative (go to manual
Pump will not run
Pump will not turn o
Pump hums but doesn’t run
Pump delivers insu cient capacity
Pump cycles too frequently or runs periodically
when xtures are not in use
Pump shuts o and turns on independent of
switch, (trips thermal overload protector).
CAUTION! Pump may start unexpectedly.
Disconnect power supply.
Pump operates noisily or vibrates excessively
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.
operation)
2a. Float movement restricted
2b. Switch will not activate pump or is defective
2c. Defective motor
3. Insu cient liquid level
2a. Float movement restricted
2b. Switch will not activate pump or is defective
4. Ecessive in ow or pump not properly sized for
application
9. Pump may be air locked causing pump not to ow
14. H-O-A switch on panel is in “HAND” position
1. Incorrect low voltage
8. Impeller jammed or loose on shaft, or inlet
plugged
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
6. Check valve partially closed or installed backwards
11. Fixtures are leaking
15. Ground water entering basin
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
12. Excessive water temperature (internal
protection only)
2c. Worn bearings, motor shaft bent
5. Debris in impeller cavity or broken impeller
10. Pumprunning backwards
13. Piping attachments to building structure too
loose or rigid
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.
2a. Reposition pump or clean basin as required to
provide adaquate clearance for oat
2b. Disconnect level control. Set ohmmeter for a
low rang, such as 100 ohms full scale and
connect to level control leads. Actuate level
control manually and check to see that
ohmmeter shows zero ohms for closed switch
and full scale for open switch. (Float Switch)
2c. 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. Verify that turn-o level of switch is set
so that the suction is always ooded. Clean vent
hole
10. Check rotation. If power supply is three phase,
reverse any two of three power supply leads to
ensure proper impeller rotation
11. Repair xtures as required to eliminate leakage
12. Check pump temperature limits and uid
temperature
13. Replace portion of discharge pipe with exible
connector or tighten existing piping.
14. Turn to automatic position
15. Check for leaks around basin inlet and outlets
18
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