Grundfos SPE User manual

GRUNDFOS INSTRUCTIONS
SPE
Stainless steel submersible pump for
environmental applications
Installation and operating instructions
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English (US) Installation and operating instructions
CONTENTS Page 1. Limited warranty
Products manufactured by GRUNDFOS PUMPS
CORPORATION (Grundfos) are warranted to
the original user only to be free of defects in
material and workmanship for a period of 24
months from date of installation, but not more
than 30 months from date of manufacture.
Grundfos' liability under this warranty shall be
limited to repairing or replacing at Grundfos'
option, without charge, F.O.B. Grundfos' factory
or authorized service station, any product of
Grundfos' manufacture. Grundfos will not be
liable for any costs of removal, installation,
transportation, or any other charges which may
arise in connection with a warranty claim.
Products which are sold but not manufactured
by Grundfos are subject to the warranty
provided by the manufacturer of said products
and not by Grundfos' warranty. Grundfos will not
be liable for damage or wear to products caused
by abnormal operating conditions, accident,
abuse, misuse, unauthorized alteration or repair,
or if the product was not installed in accordance
with Grundfos' printed installation and operating
instructions.
To obtain service under this warranty, the
defective product must be returned to the
distributor or dealer of Grundfos' products from
which it was purchased together with proof of
purchase and installation date, failure date, and
supporting installation data. Unless otherwise
provided, the distributor or dealer will contact
Grundfos or an authorized service station for
instructions.
Any defective product to be returned to
Grundfos or a service station must be sent
freight prepaid; documentation supporting the
warranty claim and/or a Return Material
Authorization must be included if so instructed.
GRUNDFOS WILL NOT BE LIABLE FOR ANY
INCIDENTAL OR CONSEQUENTIAL
DAMAGES, LOSSES, OR EXPENSES ARISING
FROM INSTALLATION, USE, OR ANY OTHER
CAUSES. THERE ARE NO EXPRESS OR
IMPLIED WARRANTIES, INCLUDING
MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, WHICH EXTEND
BEYOND THOSE WARRANTIES DESCRIBED
OR REFERRED TO ABOVE.
Some jurisdictions do not allow the exclusion or
limitation of incidental or consequential
damages and some jurisdictions do not allow
limit actions on how long implied warranties may
last. Therefore, the above limitations or
exclusions may not apply to you. This warranty
gives you specific legal rights and you may also
have other rights which vary from jurisdiction to
jurisdiction.
1. Limited warranty 2
2. Symbols used in this document 3
3. Introduction 3
3.1 Delivery and handling 3
3.2 Applications 3
4. Operating conditions 3
5. Installation 3
5.1 Pre-installation checks 3
5.2 Mechanical installation 4
5.3 Electrical installation 5
6. Startup 6
7. Operation 6
8. Troubleshooting 7
8.1 Checking pump performance 7
8.2 Troubleshooting chart 10
9. Technical data 13
9.1 Minimum water flow requirements
for submersible pump motors 13
9.2 Guide for engine-driven generators
in submersible pump applications 13
9.3 Electrical data 13
10. Disposal 14
Warning
Prior to installation, read these
installation and operating
instructions. Installation and
operation must comply with local
regulations and accepted codes of
good practice.
This booklet should be left with the
owner of the pump for future
reference and information
regarding its operation.
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2. Symbols used in this document
3. Introduction
Your Grundfos SPE environmental pump is of
the utmost quality. Combined with proper
installation, your Grundfos pump will give you
many years of reliable service.
To ensure the proper installation of the pump,
carefully read the complete manual before
attempting to install the pump.
3.1 Delivery and handling
3.1.1 Delivery
Shipment inspection
Examine the components carefully to make sure
no damage has occurred to the pump end,
motor, or cable during shipment.
The shipping carton should contain:
• pump end
•motor
• cable
• these installation and operating instructions.
3.1.2 Handling
This Grundfos SPE environmental pump should
remain in its shipping carton until it is ready to
be installed. The carton is specially designed to
protect it from damage.
During unpacking and prior to installation, make
sure that the pump is not contaminated,
dropped or mishandled.
You will find a loose data plate wired to the
pump. It should be securely mounted at the well
or attached to the control box.
3.2 Applications
3.2.1 Pumped liquids
SPE pumps are designed for pumping cold
groundwater that is free of air or gasses.
Decreased pump performance and life
expectancy can occur if the groundwater is not
cold or contains air or gasses.
4. Operating conditions
5. Installation
5.1 Pre-installation checks
Before beginning installation, the following
checks should be made. They are all critical for
the proper installation of this submersible pump.
5.1.1 Condition of the well
If the pump is to be installed in a new well, the
well should be fully developed and bailed or
blown free of cuttings and sand. Dispose of
discharged materials in accordance with the
specific job site requirements. The stainless
steel construction of the SPE Environmental
Pump makes it resistant to abrasion; however,
no pump, made of any material, can forever
withstand the destructive wear that occurs when
constantly pumping sandy groundwater.
Determine the maximum depth of the well, and
the drawdown level at the pump’s maximum
capacity. Pump selection and setting depth
should be based on this data.
Diameter of well casing
The inside diameter of the well casing should be
checked to ensure that it is not smaller than the
size of the pump and motor.
5.1.2 Condition of the water
SPE pumps are designed for pumping cold
groundwater that is free of air or gasses.
Decreased pump performance and life
expectancy can occur if the groundwater is not
cold or contains air or gasses.
Warning
If these safety instructions are not
observed, it may result in personal
injury!
Caution
If these safety instructions are not
observed, it may result in
malfunction or damage to the
equipment!
Note
Notes or instructions that make the
job easier and ensure safe
operation.
Warning
The use of this product requires
experience with and knowledge of
the product. Persons with reduced
physical, sensory or mental
capabilities must not use this
product, unless they are under
supervision or have been
instructed in the use of the product
by a person responsible for their
safety.
Children must not use or play with
this product.
Caution
The pumps should remain in the
packing until they are placed in
vertical position during installation.
Caution
The motor is equipped with an
electrical cable. Under no
circumstance should the electrical
cable be used to support the weight
of the pump.
Flow (Q): Max. 50 gpm (11.4 m3h)
Head (H): Max. 500 ft (152 m)
Liquid temp: +32 °F to +104 °F (0 °C to 40 °C)
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5.1.3 Installation depth
Pumping sand or well sediment can occur when
the pump motor is installed lower than the top of
the well screen or within 5 ft of the well bottom.
This can reduce the performance and life
expectancy of the pump and should be avoided.
If the pump is to be installed in a lake,
containment pond, tank or large diameter well,
the water velocity passing over the motor must
be sufficient to ensure proper motor cooling.
The minimum recommended water flow rates
which ensure proper cooling are listed in section
9.1 Minimum water flow requirements for sub-
mersible pump motors on p. 13.
5.1.4 Electrical supply
The motor voltage, phase and frequency
indicated on the motor nameplate should be
checked against the actual electrical supply.
5.1.5 Wire cable type
The wire cable used between the pump and
control box or panel should be approved for
submersible pump applications. The conductor
insulation should have a continuous Teflon®
jacket with no splices and must be suitable for
use with submersible pumps.
5.2 Mechanical installation
5.2.1 Riser pipe or hose
The riser pipe or hose should be properly sized
and selected based on estimated flow rates and
friction-loss factors.
A back-up wrench should be used when
attaching a riser pipe or metallic nipple to the
pump. The pump should only be gripped by the
flats on the top of the discharge chamber. The
body of the pump, cable guard or motor
should not be gripped under any
circumstance.
5.2.2 If a steel riser pipe is used
An approved pipe thread compound should be
used on all joints. Make sure the joints are
adequately tightened in order to resist the
tendency of the motor to loosen the joints when
stopping and starting.
After the first section of the riser pipe has been
attached to the pump, the lifting cable or
elevator should be clamped to the pipe. Do not
clamp the pump.
When raising the pump and riser section, be
careful not to place bending stress on the pump
by picking it up by the pump-end only.
The drop cable should be secured to the riser
pipe at frequent intervals to prevent sagging,
looping or possible cable damage.
5.2.3 If plastic or flexible riser pipe is used
Use the correct compound recommended by the
pipe manufacturer or specific job specifications.
Make sure that joints are securely fastened.
Besides making sure that joints are securely
fastened, the use of a torque arrester is
recommended when using these types of pipe.
Do not connect the first plastic or flexible
riser section directly to the pump.
Always attach a metallic nipple or adapter
into the discharge chamber of the pump.
When tightened, the threaded end of the
nipple or adapter must not come in contact
with the check valve retainer in the discharge
chamber of the pump.
The drop cable should be secured to the riser
pipe at frequent intervals using an approved clip
or tape to prevent sagging, looping and possible
cable damage.
Leave enough slack between tie points to allow
for this stretching. This tendency for plastic and
flexible pipe to stretch will also affect the
calculation of the pump setting depth. If the
depth setting is critical, check with the
manufacturer of the pipe to determine how to
compensate for pipe stretch.
When these types of pipe are used, it is
recommended that a safety cable be attached to
the pump to lower and raise it. The discharge
piece of SPE submersibles is designed to
accommodate this cable; see fig. 1.
Fig. 1 SPE submersible with safety cable
attached
Caution
When tightened, the first section of
the riser pipe must not come in
contact with the check valve
retainer in the discharge chamber
of the pump.
Caution
Make sure that the electrical cables
are not cut or damaged in any way
when the pump is being lowered in
the well.
Note
Important — plastic and flexible
pipe tend to stretch under load.
This stretching must be taken into
account when securing the cable to
the riser pipe.
TM05 0853 1711
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5.2.4 Protect the well from contamination
While installing the pump, proper care should be
used not to introduce foreign objects or
contaminants into the well. The well should be
finished off above grade to protect against
surface water from entering the well, causing
contamination.
5.3 Electrical installation
Verification of the electrical supply should be
made to ensure the voltage, phase and
frequency match that of the motor. Motor
voltage, phase, frequency and full-load current
information can be found on the nameplate
attached to the motor. Motor electrical data can
be found in section 9.3 Electrical data on p. 13.
Direct on-line starting is used due to the
extremely fast run-up time of the motor (0.1
second maximum), and the low moment of
inertia of the pump and motor. Direct on-line
starting current (locked rotor amp) is between 4
and 6.5 times the full-load current.
5.3.1 Engine-driven generators
If the SPE pump is going to be operated using
an engine driven generator, Grundfos suggests
the manufacturer of the generator be contacted
to ensure the proper generator is selected and
used. See section 5.3.1 Engine-driven genera-
tors on p. 13 for generator sizing guide.
5.3.2 Control box/panel wiring
Single-phase motors must be connected as
indicated in the motor control box. See fig 2.
Fig. 2 Typical single-phase wiring
diagram for Grundfos control boxes
5.3.3 High voltage surge arresters
A high voltage surge arrester should be used to
protect the motor against lightning and switching
surges. The correct voltage rated surge arrester
should be installed on the supply(line) side of
the control box; see fig. 3.
Fig. 3 Single-phase hookup with surge
arrestor
5.3.4 Control box and surge arrester
grounding
The ground wire should be a bare copper
conductor at least the same size as the drop
cable wire size. The ground wire should be run
as short a distance as possible and be securely
fastened to a true grounding point.
True grounding points are considered to be:
• a grounding rod driven into the water strata
• steel well casing submerged into the water
lower than the pump setting level
• steel discharge pipes without insulating
couplings.
Warning
To reduce the risk of electrical
shock during operation of this
pump requires the provision of
acceptable grounding. If the means
of connection to the supply
connected box is other than
grounded metal conduit, ground the
pump back to the service by
connecting a copper conductor, at
least the size of the circuit
supplying the pump, to the
grounding screw provided within
the wiring compartment.
All electrical work should be
performed by a qualified electrician
in accordance with the latest edition
of the National Electrical Code,
local codes and regulations.
Caution
If voltage variations are larger than
+ / - 10 %, do not operate the pump.
TM05 0037 0611
Caution
The surge arrester must be
grounded in accordance with the
National Electric Code, local codes
and regulations.
TM05 0039 0611
Caution
The control box shall be
permanently grounded in
accordance with the National
Electrical Code and local codes or
regulations.
Single phase
power supply
Ground
True
grounding
point
Lightning
arrester
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If plastic discharge pipe and well casing are
used, a properly sized bare copper wire should
be connected to a stud on the motor and run to
the control panel.
Connect the grounding wire to the ground point
first and then to the terminal in the control box or
panel.
5.3.5 Wiring checks
Before making the final wiring connections of the
drop cable to the control box terminal, it is a
good practice to check the insulation resistance
to ensure that the cable is good.
Measurements for a new installation must be at
least 1,000,000 ohm. Do not start the pump if
the measurement is less than this. If it is higher,
finish wiring and verify that all electrical
connections are made in accordance with the
wiring diagram. Check to ensure the control box
and high voltage surge arrester have been
grounded.
6. Startup
After the pump has been set into the well and
the wiring connections have been made, the
following procedures should be performed:
1. Attach a temporary horizontal length of pipe
with installed gate valve to the riser pipe.
2. If required, make provisions to capture
discharged fluids for disposal.
3. Adjust the gate valve one-third open.
4. Start the pump and let it operate until the
water runs clear of sand and silt.
5. As the water clears, slowly open the gate
valve in small increments until the desired
flow rate of clear water is reached. The pump
should not be operated beyond its maximum
flow rating and should not be stopped until
the groundwater runs clear.
6. If the groundwater is clean and clear when
the pump is first started, the valve should still
be opened until the desired flow rate is
reached.
7. Disconnect the temporary piping
arrangements and complete the final piping
connections.
8. Under no circumstances should the pump
be operated for any prolonged period of
time with the discharge valve closed. This
can result in motor damage due to
overheating. A properly sized relief valve
should be installed at the well head to
prevent the pump from running against a
closed valve.
9. Start the pump and test the system. Check
and record the voltage and current draw on
each motor lead.
7. Operation
The pump and system should be periodically
checked for water quantity, pressure, drawdown,
periods of cycling, and operation of controls.
A properly sized relief valve should be installed
at the well head to prevent the pump from
running against a closed valve.
If the pump fails to operate, or there is a loss of
performance, refer to section
8. Troubleshooting.
For additional information, refer to the MP1,
SPE VFD (Variable Frequency Drive) Installation
and Operating Instructions manual.
Caution
Do not ground to a gas supply line.
Caution
Under no circumstances should be
the pump be operated for any
prolonged periods of time with the
discharge valve closed. This can
result in motor and pump damage
due to overheating.
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8. Troubleshooting
The majority of problems that develop with
submersible pumps are electrical, and most of
these problems can be corrected without pulling
the pump from the well. The following charts
cover most of the submersible service work. As
with any troubleshooting procedure, start with
the simplest solution first; always make all the
above-ground checks before pulling the pump
from the well.
Usually only two instruments are needed — a
combination voltmeter/ammeter, and an
ohmmeter. These are relatively inexpensive and
can be obtained from most water systems
suppliers.
8.1 Checking pump performance
The troubleshooting chart in section
8.2 Troubleshooting chart on p. 10 may require
that you test the pump’s performance against its
curve. To do so, perform these steps:
1. Install pressure gauge
2. Start pump
3. Gradually close the discharge valve
4. Read pressure at shut-off.
5. After taking reading, open valve to its
previous position.
6. To calculate pump performance, first convert
psi reading to feet.
(For water: psi x 2.31 = ____ ft.).
7. Add this to the total vertical distance from the
pressure gauge to the water level in the well
while the pump is running.
8. Refer to the specific pump curve for the
shut-off head for that pump model. If the
measured head is close to the curve, pump is
probably OK.
Warning
WHEN WORKING WITH
ELECTRICAL CIRCUITS, USE
CAUTION TO AVOID ELECTRICAL
SHOCK. It is recommended that
rubber gloves and boots be worn
and that care is taken to have metal
control boxes and motors
grounded to power supply ground
or steel drop pipe or casing
extending into the well.
Warning
Submersible motors are intended
for operation in a well. When not
operated in a well, failure to
connect motor frame to power
supply ground may result in a
serious electrical shock.
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8.1.1 Preliminary tests
Test How to measure What it means
Supply voltage
TM00 1371 5092
By means of a voltmeter, which
has been set to the proper
scale, measure the voltage at
the control box.
•On single-phase units,
measure between line and
neutral.
When the motor is under load, the
voltage should be within ± 10% of the
nameplate voltage. Larger voltage
variation may cause winding damage.
Large variations in the voltage indicate
a poor electrical supply and the pump
should not be operated until these
variations have been corrected.
If the voltage constantly remains high or
low, the motor should be changed to the
correct supply voltage.
Current
TM00 1372 5082
• By use of an ammeter, set
on the proper scale,
measure the current on each
power lead at the control box
or starter. See section
9.3 Electrical data on p. 13
for motor amp draw
information.
• Current should be measured
when the pump is operating
at a constant discharge
pressure with the motor fully
loaded.
If the amp draw exceeds the listed
service factor amps (SFA) check for the
following:
• Burnt contacts on motor starter.
• Loose terminals in starter or control
box or possible cable defect. Check
winding and insulation resistances.
• Supply voltage too high or low.
• Motor windings are shorted.
• Pump is damaged, causing a motor
overload.
Winding resistance
TM05 0028 0511
• Turn off power and
disconnect the drop cable
leads in the control box.
• Using an ohmmeter, set the
scale selectors to Rx1 for
values under 10 ohms and
Rx10 for values over 10
ohms.
• Zero-adjust the meter and
measure the resistance
between leads. Record the
values.
• Motor resistance values can
be found in section
9.3 Electrical data on p. 13.
Cable resistance values can
be found in section
9.3.1 Total resistance of
drop cable (Ohms) on p. 14.
If all the ohm values are normal, and
the cable colors correct, the windings
are not damaged.
If any one ohm value is less than
normal, the motors may be shorted.
If any one ohm value is greater than
normal, there is a poor cable
connection or joint. The windings or
cable may also be open.
If some of the ohm values are greater
than normal and some less, the drop
cable leads are mixed. To verify lead
colors, see resistance values in section
9.3 Electrical data on p. 13.
Insulation resistance
TM05 0029 0511
• Turn off power and
disconnect the drop cable
leads in the control box.
• Using an ohm or mega
ohmmeter, set the scale
selector to Rx 100K and
zeroadjust the meter.
• Measure the resistance
between the lead and
ground (discharge pipe or
well casing, if steel).
For ohm values, refer to 8.1.2 Ohm
value chart on p. 9.
Motors of all hp, voltage, phase and
cycle duties have the same value of
insulation resistance.
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8.1.2 Ohm value chart
Ohm value chart
Ohm
value Megaohm value Condition of motor and leads/ recommended procedure
Motor not yet
installed
2,000,000
(or more) 2.0 New motor.
1,000,000 (or
more) 1.0 Used motor which can be reinstalled in the well.
Motor in well
(Ohm readings are
for
drop cable plus
motor)
500,000 -
1,000,000 0.5 - 1.0 A motor in reasonably good condition.
20,000 - 500,000 0.02 - 0.5 A motor which may have been damaged by lightning or with damaged leads. Do not pull the pump for this
reason.
10,000 - 20,000 0.01 - 0.02
A motor which definitely has been damaged or with
damaged cable.
The pump should be pulled and repairs made to the
cable or the motor replaced. The motor will still
operate, but probably not for long.
Less than 10,000 0 - 0.01
A motor which has failed or with completely destroyed
cable insulation.
The pump must be pulled and the cable repaired or the
motor replaced. The motor will not run in this condition.
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8.2 Troubleshooting chart
Problem Possible cause/how to check Possible remedy
1. Pump does not
run. a) No power at pump panel.
How to check:
Check for voltage at panel.
If no voltage at panel, check feeder
panel for tripped circuits.
b) Fuses are blown or circuit
breakers are tripped.
How to check:
Remove fuses and check for
continuity with ohmmeter.
Replace blown fuses or reset circuit
breaker. If new fuses blow or circuit
breaker trips, the electrical
installation and motor must be
checked.
c) Defective controls.
How to check:
Check all safety and pressure
switches for operation. Inspect
contacts in control devices.
Replace worn or defective parts.
d) Motor and/or cable are defective.
How to check:
Turn off power. Disconnect motor
leads from control box. Measure
the lead-to-lead resistances with
the ohmmeter (Rx1). Measure
lead-to-ground values with
ohmmeter (Rx100K). Record
measured values.
If open motor winding or ground is
found, remove pump and recheck
values at the surface. Repair or
replace motor or cable.
e) Defective capacitor (single-phase
only).
How to check:
Turn off the power, then discharge
capacitor. Check with an
ohmmeter (Rx100K). When meter
is connected, the needle should
jump forward and slowly drift back.
If there is no ohmmeter needle
movement, replace the capacitor.
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2. Pump runs but
does not deliver
water.
a) Groundwater level in well is too
low or well is collapsed.
How to check:
Check well draw-down.
Lower pump if possible. If not,
throttle discharge valve and install
water level control.
b) Integral pump check valve is
blocked.
How to check:
Check the pump’s performance
against its curve; see section
8.1 Checking pump performance
on p. 7.
If the pump is not operating close to
the pump curve, remove pump and
inspect discharge section. Remove
blockage, repair valve and valve
seat if necessary. Check for other
damage. Rinse out pump and
re-install.
c) Inlet strainer is clogged.
How to check:
Check the pump’s performance
against its curve; see section
8.1 Checking pump performance
on p. 7.
If pump is not operating close to the
pump curve, remove pump and
inspect. Clean strainer, inspect
integral check valve for blockage,
rinse out pump and re-install.
d) Pump is damaged.
How to check:
Check the pump’s performance
against its curve; see section
8.1 Checking pump performance
on p. 7.
If pump is damaged, repair as
necessary. Rinse out pump and
re-install.
3. Pump runs but at
reduced capacity. a) Draw-down is larger than anticipated.
How to check:
Check draw-down during pump
operation.
Lower the pump if possible. If not,
throttle discharge valve and install
water level control.
b) Discharge piping or valve leaking.
How to check:
Examine system for leaks.
Repair leaks.
c) Pump strainer or check valve are
clogged.
How to check:
Remove pump and inspect.
Clean, repair, rinse out pump and
reinstall.
d) Pump is worn.
How to check:
Check the pump’s performance
against its curve; see section
8.1 Checking pump performance
on p. 7.
If not close to pump curve, remove
pump and inspect.
Problem Possible cause/how to check Possible remedy
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4. Pump cycles too
much. a) Pressure switch is not properly adjusted or is defective.
How to check:
Check pressure setting on switch
and operation. Check voltage
across closed contacts.
Re-adjust switch or replace if
defective.
b) Level control is not properly set or
is defective.
How to check:
Check setting and operation.
Re-adjust setting (refer to
manufacturer data.) Replace if
defective.
c) Plugged snifter valve or bleed
orifice.
How to check:
Examine valve and orifice for dirt
or corrosion.
Clean and/or replace snifter valve or
bleed orifice if defective.
5. Fuses blow or
circuit breakers
trip
a) High or low voltage.
How to check:
Check voltage at pump panel. If
not within ± 10%, check wire size
and length of run to pump panel.
If wire size is correct, contact power
company. If not, correct and/or
replace as necessary.
b) Control box wiring and
components.
How to check:
Check that control box parts
match the parts list. Check to see
that wiring matches wiring
diagram. Check for loose or
broken wires or terminals.
Correct as required.
c) Defective capacitor.
How to check:
Turn off power and discharge
capacitor. Check using an
ohmmeter (Rx100K). When the
meter is connected, the needle
should jump forward and slowly
drift back.
If there is no ohmmeter needle
movement, replace the capacitor.
d) Starting relay (Franklin
single-phase motors only).
How to check:
Check resistance of relay coil with
an ohmmeter (Rx1000K). Check
contacts for wear.
Replace defective starting relay.
Problem Possible cause/how to check Possible remedy
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9. Technical data
9.1 Minimum water flow requirements
for submersible pump motors
Notes:
• A flow inducer or sleeve must be used if the
water enters the well above the motor or if
there is insufficient water flow past the motor.
• The minimum recommended water velocity
over 4” motors is 0.25 feet (0.08 m) per
second.
9.2 Guide for engine-driven generators
in submersible pump applications
Notes:
• Table is based on typical 176 °F (80 °C) rise
continuous duty generators with
35 % maximum voltage dip during start-up
of single-phase motors.
• Contact the manufacturer of the generator to
assure the unit has adequate capacity to run
the submersible motor.
• If the generator rating is in KVA instead of
kilowatts, multiply the above ratings by 1.25
to obtain KVA.
9.3 Electrical data
Motor
diameter
Casing or
sleeve I.D.
[inches]
Min. flow past
the motor
[gpm]
4”
41.2
57
613
721
830
Motor
[hp]
Minimum kilowatt rating of
generator for three-wire
submersible pump motors
[kW]
Externally
regulated Internally regulated
0.33 1.5 1.2
0.5 2.0 1.5
0.75 3.0 2.0
14.0 2.5
1.5 5.0 3.0
Grundfos submersible pump motors - 60 Hz
4-inch, single phase, 2-wire motors (control box not required)
Hp Ph Volt
[V] S.F.
Amperage Full load Line-to-line resistance
[ohms] KVA
code
**
Max.
thrust
(lbs)
Full
load Lock rotor S.F. amps Eff. Power factor
Blk.-Yel. Red-Yel.
Delta
0.5 1 230 1.60 4.5 34.5 6.0 62.0 76.0 5.2 - 6.3 R 770
0.75 1 230 1.50 6.9 40.5 8.4 62.0 75.0 3.2 - 3.8 N 770
1 1 230 1.40 8.0 48.4 9.8 63.0 82.0 2.5 - 3.1 M 770
1.5 1 230 1.30 10.0 62.0 13.1 64.0 85.0 1.9 - 2.3 L 770
Grundfos submersible pump motors - 60 Hz
4-inch, single phase, 3-wire motors
Hp Ph Volt
[V] S.F.
Amperage Full load Line-to-line resistance
[ohms] KVA
code
**
Max.
thrust
(lbs)
Full
load Lock rotor S.F. amps Eff. Power factor
Blk.-Yel. Red-Yel.
Delta
0.5 1 230 1.60 4.5 21.5 6.0 62.0 76.0 4.7 - 5.7 15.8 - 19.6 L 770
0.75 1 230 1.50 6.9 31.4 8.4 62.0 75.0 3.2 - 3.9 14 - 17.2 L 770
1 1 230 1.40 8.0 38.0 9.8 63.0 82.0 2.6 - 3.1 10.3 - 12.5 K 770
1.5 1 230 1.30 9.4 45.9 11.6 69.0 89.0 1.9 - 2.3 7.8 - 9.6 H 770
SPE_ US.book Page 13 Thursday, May 5, 2011 8:18 PM

14
English (US)
9.3.1 Total resistance of drop cable (Ohms)
The values shown in this table are for copper
conductors. Values are for the total resistance of
drop cable from the control box to the motor
and back.
To determine the resistance:
1. Disconnect the drop cable leads from the
control box or panel.
2. Record the size and length of drop cable.
3. Determine the cable resistance from the
table.
4. Add drop cable resistance to motor
resistance. Motor resistances can be found in
section 9.3 Electrical data on p. 13.
5. Measure the resistance between each drop
cable lead using an ohmmeter. Meter should
be set on Rx1 and zero-balanced for this
measurement.
6. The measured values should be
approximately equal to the calculated values.
10. Disposal
Distancefrom
control box to
pump motor
[ft]
12 AWG wire
resistance
[ohms]
14 AWG wire
resistance
[ohms]
10 0.03 0.05
20 0.06 0.10
30 0.10 0.15
40 0.13 0.21
50 0.16 0.26
60 0.19 0.31
70 0.23 0.36
80 0.26 0.41
90 0.29 0.46
100 0.32 0.51
110 0.36 0.57
120 0.39 0.62
130 0.42 0.67
140 0.45 0.72
150 0.49 0.77
160 0.52 0.82
170 0.55 0.87
180 0.58 0.93
190 0.62 0.98
200 0.65 1.03
Warning
Adherence to environmental
regulations — when handling and
operating the SPE environmental
pump, all environmental
regulations concerning the
handling of hazardous materials
must be observed. When the pump
is taken out of operation, great care
should be taken to ensure that the
pump contains no hazardous
materials that might cause injury to
human health or to the
environment.
SPE_ US.book Page 14 Thursday, May 5, 2011 8:18 PM

Grundfos companies
U.S.A.
GRUNDFOS Pumps Corporation
17100 West 118th Terrace
Olathe, Kansas 66061
Phone: [phone]
Telefax: [phone]
Canada
GRUNDFOS Canada Inc.
2941 Brighton Road
Oakville, Ontario
L6H 6C9
Phone: [phone]
Telefax: [phone]
México
Bombas GRUNDFOS de México
S.A. de C.V.
Boulevard TLC No. 15
Parque Industrial Stiva
Aeropuerto
Apodaca, N.L.C.P. 66600
Phone: [phone]
Telefax: [phone]
SPE_ US.book Page 17 Thursday, May 5, 2011 8:18 PM

www.grundfos.com
Being responsible is our foundation
Thinking ahead makes it possible
Innovation is the essence
The name Grundfos, the Grundfos logo, and the payoff Be–Think–Innovate are registrated trademarks
owned by Grundfos Management A/S or Grundfos A/S, Denmark. All rights reserved worldwide.
L-SPE-TL-01 05.11 US
Repl. L-RF-IO-001 02.00
© 2002, 2011 Grundfos Pumps Corp.
Subject to alterations.
SPE_ US.book Page 16 Thursday, May 5, 2011 8:18 PM