Grundfos 5SQE03A-90-NE, 5SQE05B-250-NE, 5SQE03A-120-NE, 5SQE07B-290-NE, 5SQE10C-340-NE Installation And Operating Instructions Manual

Installation and

Operating Instructions

Please leave these instructions with the pump for future reference

• Efficient Permanent Magnet
Motor

• High Starting Torque

• Soft Start

(2 seconds to reach maximum
rpm, and maximum pressure)

• Built-in "Smart" Motor
Protection with automatic
restart

• Communication Through the
Redi-Flo3 Status Box

• Integrated Protection Against
Adverse Conditions

• Environmental Materials of
Construction

SQE-NE

Environmental Pumps

Grundfos Pumps Corporation • 3131 N. Business Park Ave., Fresno, CA 93727

Customer Service Centers: Allentown, PA • Fresno, CA

Phone: [phone] • Fax: [phone]

Canada: Oakville, Ontario • Mexico: Apodaca, N.L.

Visit our website at www.us.grundfos.com

Products manufactured by GRUNDFOS are warranted to the original user only to be free
of defects in material and workmanship for a period of 18 months from date of installation,
but not more than 24 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.

MANUFACTURER 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. EXCEPT
AS EXPRESSLY HEREIN PROVIDED THE GOODS ARE SOLD "AS IS", THE ENTIRE
RISK AS TO QUALITY AND FITNESS FOR A PARTICULAR PURPOSE, AND
PERFORMANCE OF THE GOODS IS WITH THE BUYER, AND SHOULD THE GOODS
PROVE DEFECTIVE FOLLOWING THEIR PURCHASE, THE BUYER AND NOT THE
MANUFACTURER, DISTRIBUTOR, OR RETAILER ASSUMES THE ENTIRE RISK OF
ALL NECESSARY SERVICING OR REPAIR.

Some jurisdictions do not allow the exclusion or limitation of implied warranties of
merchantability and fitness for a particular purpose, of incidental or consequential damages
and some jurisdictions do not allow limitations on how long implied warranties may last or
require you to pay certain expenses as set forth above. 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.

The telephone number of our service and repair facilities central directory, from which you
can obtain the locations of our service and repair facilities is, 1-800-333-1366.

LIMITED WARRANTY

Federal Communications Commission Notice:

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.

L-RF-IO-008 Rev.2/00
PRINTED IN USA

SAFETY WARNING

Pre-Installation Checklist

1. Well Preparation

If the pump is to be installed in a new well then the well should be fully
developed and bailed or blown free of cuttings and sand. The construction of the
GRUNDFOS Redi-Flo3 submersibles makes it resistant to abrasion; however, no
pump made of any material can forever withstand the destructive wear that
occurs when constantly pumping sandy water.

2. Make Sure You Have the Right Pump

Determine the maximum depth of the well, and the
drawdown level at the pump's maximum capacity. Pump
selection and setting depth should be made based on this
data.

3. Pumped Fluid Requirements

Submersible well pumps are designed for pumping turbid
free, cool water; free of air or gases. Possible decreased
pump performance and life expectancy can occur when
operating in conditions outside of this chemistry. Water
temperature ideally should not exceed 104°F. Extended
pump life and optimal performance can best be obtained
through proper well development and in the case of
higher fluid temperatures use a cooling shroud.

A check should be made to ensure that the installation
depth of the pump will always be at least three feet below
the maximum drawdown level of the well (Fig.1). The
bottom of the motor should never be installed lower than
the bottom of the screen.

4. Motor Cooling Requirements

To ensure proper motor cooling refer to the table below for minimum flow
requirements:

Electrical Work

WARNING:To reduce the risk of electric 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.

5. Applications

Typical applications:
Environmental applications such as:

- Remediation pumping.

- Leachate recovery.

- Pollution recovery.

- Dewatering

6. Motor Preparation

GRUNDFOS MSE3-NE submersible motors have water-lubricated slide
bearings. No additional lubrication is required.

The submersible motors are factory-filled with a special GRUNDFOS
motor liquid (type SML 2), which will protect the motor fluid down to

-4°F(20°C) and to prevent the growth of bacteria. The level of motor fluid is
important for the operating life of the bearings and consequently the life of
the motor.

Refilling of motor liquid

It is recommended to check and if needed, refill the motor with
GRUNDFOS motor fluid SML 2.

If the pump is to be installed horizontally, e.g. in a
tank, and there is a risk that the pump might be
covered by mud, it must be installed in a flow
sleeve.

Liquid temperatures/cooling

Figure 2 shows an operating Redi-Flo3 pump
installed in a well.
Figure 2 illustrates the following:

- Well diameter.

- Pump diameter.

- Temperature of pumped liquid.

- Flow past the motor to the pump

strainer.
Note: The well diameter must be at least 3”. If there
is a risk that the motor will be covered with
sediment or the pumped fluid is at an elevated
temperature then it is recommended the pump be
placed in a Flow Sleeve. The motor should always
be installed above the well screen.

Maximum

liquid temperature

0.0 f/s

(free convection)

Min. 0.5 f/s

Flow velocity

past the motor

86° F(30°C)

104°F (40°C)

I.D.

Fig. 1

Page 2Page 1

5. Applications

Typical applications:
Environmental applications such as:

- Remediation pumping.

- Leachate recovery.

- Pollution recovery.

- Dewatering

6. Motor Preparation

GRUNDFOS MSE3-NE submersible motors have water-lubricated slide
bearings. No additional lubrication is required.

The submersible motors are factory-filled with a special GRUNDFOS
motor liquid (type SML 2), which will protect the motor fluid down to

-4°F(20°C) and to prevent the growth of bacteria. The level of motor fluid is
important for the operating life of the bearings and consequently the life of
the motor.

Refilling of motor liquid

It is recommended to check and if needed, refill the motor with
GRUNDFOS motor fluid SML 2.

If the pump is to be installed horizontally, e.g. in a
tank, and there is a risk that the pump might be
covered by mud, it must be installed in a flow
sleeve.

Liquid temperatures/cooling

Figure 2 shows an operating Redi-Flo3 pump
installed in a well.
Figure 2 illustrates the following:

- Well diameter.

- Pump diameter.

- Temperature of pumped liquid.

- Flow past the motor to the pump

strainer.
Note: The well diameter must be at least 3”. If there
is a risk that the motor will be covered with
sediment or the pumped fluid is at an elevated
temperature then it is recommended the pump be
placed in a Flow Sleeve. The motor should always
be installed above the well screen.

Pre-Installation Checklist

Well Dia.

Pump dia.

Fig. 2

Installation Procedures

Page 3

7. Installation Postions

Positional requirements

The pump is suitable for
vertical as well as horizontal
installation, however, the
pump shaft must never fall
below the horizontal plane,
see fig. 4.

To refill the motor, proceed as follows:

1. Remove the cable guard and separate
the pump end from the motor.

2. Place the motor in vertical position
with an inclination of approx. 10°.

3. Remove the filling plug using a
screwdriver or a similar tool.

4. Inject motor liquid into the motor with
a filling syringe or similar tool,see fig. 3.

5. To allow possible air to escape, move
the motor from side to side. And turn the
shaft.

6. Replace the filling plug and make sure it is tight.

7. Assemble pump end and motor.

8. Install the cable guard.

The pump is now ready for installation.

8. Electrical connection

General

The electrical connection should be carried out by an authorized
electrician in accordance with local regulations.

Before starting work on the pump, make sure the
electricity supply has been switched off and that it cannot be
accidentally switched on. The pump must be grounded. The
pump must be connected to an external mains switch.

The supply voltage, rated maximum current and power factor (PF) appear
on the motor nameplate. The required voltage for GRUNDFOS
submersible MSE3-NE motors, measured at the motor terminals, is +6%/–
10% of the nominal voltage during continuous operation (including
variation in the supply voltage and losses in cables).

If the pump is connected to an installation where a Ground Fault circuit
breaker (GFI) is used as additional protection, this circuit breaker must trip
out when ground fault currents with DC content (pulsating DC) occur.

Supply voltage:1 x 100-115V or 1 x 200-240 V +6%/–10%, 50/60 Hz.
The current consumption can only accurately be measured by means of a

true RMS instrument. If other instruments are used, the value measured
will differ from the actual value.
The Redi-Flo3 pumps can be connected to a Redi-Flo3 status box.

Note: The pump must never be connected to a capacitor or to
another type of control box other than a Redi-Flo3 status box.
The pump must never be connected to an external frequency
converter.

Motor protection

The motor has built-in automatic thermal overload protection and requires
no additional motor protection.

Connection of motor

The motor can be connected directly to the main circuit breaker.

Fig. 3

Fig. 4

Filling plug

Pre-Installation Checklist

Installation Procedures

Page 4

8. Electrical connection

General

The electrical connection should be carried out by an authorized
electrician in accordance with local regulations.

Before starting work on the pump, make sure the
electricity supply has been switched off and that it cannot be
accidentally switched on. The pump must be grounded. The
pump must be connected to an external mains switch.

The supply voltage, rated maximum current and power factor (PF) appear
on the motor nameplate. The required voltage for GRUNDFOS
submersible MSE3-NE motors, measured at the motor terminals, is +6%/–
10% of the nominal voltage during continuous operation (including
variation in the supply voltage and losses in cables).

If the pump is connected to an installation where a Ground Fault circuit
breaker (GFI) is used as additional protection, this circuit breaker must trip
out when ground fault currents with DC content (pulsating DC) occur.

Supply voltage:1 x 100-115V or 1 x 200-240 V +6%/–10%, 50/60 Hz.
The current consumption can only accurately be measured by means of a

true RMS instrument. If other instruments are used, the value measured
will differ from the actual value.
The Redi-Flo3 pumps can be connected to a Redi-Flo3 status box.

Note: The pump must never be connected to a capacitor or to
another type of control box other than a Redi-Flo3 status box.
The pump must never be connected to an external frequency
converter.

Motor protection

The motor has built-in automatic thermal overload protection and requires
no additional motor protection.

Connection of motor

The motor can be connected directly to the main circuit breaker.

Installation Procedures

Page 5 Page 6

Installation Procedures

9. Making the Wiring Connections

Single-Phase 2-wire

Wiring Diagram

for GRUNDFOS Motors

Black

Black

Pressure

Switch

Pump & Motor

Quick Disconnect

Green

10 2- Wire Pump

with Ground

A capacitor or control box should NEVER be
connected to a Redi-Flo3 submersible pump.

WARNING!

To reduce the risk of electric 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.

SINGLE-PHASE 60 HZ Maximum Cable Length Motor Service to Entrance

Motor Rating Copper Wire Size

VOLTS HP 14 12 10 8 6 4 2 0 00

115
230

10. Cable Sizing

Fig. 5

11. Motor Cable

Redi-Flo3 pumps are specifically designed to be used with Grundfos SQE-
NE Tefzel motor leads. Standard SQE-NE Tefzel motor leads are
available between 25 and 300 foot lengths in 5 foot increments. Custom
lengths longer than 300 feet are available in 10 foot increments up to 600
feet from the factory.

Installation Procedures

SINGLE-PHASE 60 HZ Maximum Cable Length Motor Service to Entrance

Motor Rating Copper Wire Size

VOLTS HP 14 12 10 8 6 4 2 0 00

115

1

/

3

130 210 340 540 840 1300 1960 2910

1

/

2

100 160 250 390 620 960 1460 2160

230

1

/

3

550 880 1390 2190 3400 5250 7960

1

/

2

400 650 1020 1610 2510 3880 5880

3

/

4

300 480 760 1200 1870 2890 4370 6470

1 250 400 630 990 1540 2380 3610 5360 6520

1

1

/

2

190 310 480 770 1200 1870 2850 4280 5240

10. Cable Sizing

11. Motor Cable

Redi-Flo3 pumps are specifically designed to be used with Grundfos SQE­NE Tefzel motor leads. Standard SQE-NE Tefzel motor leads are
available between 25 and 300 foot lengths in 5 foot increments. Custom
lengths longer than 300 feet are available in 10 foot increments up to 600
feet from the factory.

Installation Procedures

Installation Procedures

General

Note: Do not lower or lift the pump by means of the motor cable.
The loose data plate supplied with the pump should be placed close to the

installation site.

12. Installing the cable plug to
the motor

To install the cable plug, proceed as follows:

1.Check that the cable is of the correct type,
cross-section and length.

2.Check that the mains on the location has
correct connection to ground.

3.Check that the motor socket is clean and dry.

4.Press the cable plug into the motor socket.
The plug will only fit one way, see fig. 6.

5.Install and tighten the four nuts, see fig. 6.
When the plug has been installed, there must
not be a clearance between the motor and the
cable plug.

13. Installing the
cable guard

To fit the cable guard, proceed as
follows:

1. Make sure that the motor lead
lies flat in the cable guard.

2. The two flaps of the cable
guard must engage with the
upper edge of the pump
sleeve, see fig. 7.

3. Fasten the cable guard to the cable
plug with the four screws supplied, see
fig. 8.

Fig. 7

Fig. 8

Fig. 6

A

B

C

D

E

14. Piping

• The pump should only be gripped by the
two flats at the top of the pump, as
shown in fig. 9.

• The pump can be installed vertically or
horizontally. During operation, the pump
must always be completely submerged
in water.

• When plastic pipe is used, a stainless
steel safety wire is recommended for
lowering and lifting the pump. Fasten
the wire to the eyelet on the pump, as
shown in fig. 10.

• The threaded joints must be well cut
and fit together tightly to ensure that
they do not work loose.

15. Installing the Pump

Installation Depth

The dynamic water level should always be
above the pump see fig. 11.

A = Dynamic water level
B = Static Water Level
C = Minimum 3" well diameter
D = Drawdown
E = Installation depth below static

water level. Maximum 500 feet

Procedures

To install the pump, follow these steps:

1. Install the enclosed data plate sticker at

the well head.

2. Check the well for proper clearance — the

well must be at least 3" in diameter. It is
a good idea to check the well for
clearance using a plumb ring (2.95 ø x 10
in.).

3. Attach the first section of riser pipe to the

pump.

Page 7

Installation Procedures

Page 8

A

B

C

D

E

14. Piping

• The pump should only be gripped by the
two flats at the top of the pump, as
shown in fig. 9.

• The pump can be installed vertically or
horizontally. During operation, the pump
must always be completely submerged
in water.

• When plastic pipe is used, a stainless
steel safety wire is recommended for
lowering and lifting the pump. Fasten
the wire to the eyelet on the pump, as
shown in fig. 10.

• The threaded joints must be well cut
and fit together tightly to ensure that
they do not work loose.

15. Installing the Pump

Installation Depth

The dynamic water level should always be
above the pump see fig. 11.

A = Dynamic water level
B = Static Water Level
C = Minimum 3" well diameter
D = Drawdown
E = Installation depth below static

water level. Maximum 500 feet

Procedures

To install the pump, follow these steps:

1. Install the enclosed data plate sticker at

the well head.

2. Check the well for proper clearance — the

well must be at least 3" in diameter. It is
a good idea to check the well for
clearance using a plumb ring (2.95 ø x 10
in.).

3. Attach the first section of riser pipe to the

pump.

Fig. 9

Fig. 10

Fig. 11

Page 9

Installation Procedures

Installation depths

Maximum installation depth: below the static water level: 500 feet,
Minimum installation depths: 1.75' below the dynamic water level:

Vertical installation:

During start-up and operation, the pump must always be
completely submerged in water.

Horizontal installation:

The pump must be installed at least 1.75 ft. below the
dynamic water level. If there is a risk that the pump might be
covered by mud, the pump must always be placed in a flow
sleeve.

17. Generator Operation

• It is OK to operate the Redi-Flo3 with a generator.
The generator must be sized 10% above the pumps P1

(Input Power) values.
Use the table to select the correct size generator for the
motor HP.

16. Installing the Pump(cont.)

4. Lower the pump into the well. Make sure the motor cable is not
damaged when the pump is lifted or lowered into the well —
especially in 3" wells.

NOTE

: Do not lower or lift the pump

using the motor cable.

5. When the pump has been installed to the required depth, the
installation should be finished by means of a well seal. Note that
the dynamic water level should always be above the pump.

6. Loosen the safety wire so that it becomes unloaded and lock it to
the well seal using a cable clamp.

7. Attach the supplemental information label at the electrical
installation site.

8. Complete the electrical connections. Remember that a

capacitor or a control box should NEVER be connected to a
Redi-Flo3 submersible pump.

18. Starting the Pump for the First Time

When the pump has been connected correctly, the pump should be
started with the discharge valve closed approximately one-third. Due
to the soft start feature, the pump takes approximately 2 seconds to
develop full pressure.

Motor Cooling and Other Considerations

• Make sure the well is capable of yielding a minimum quantity

of water corresponding to the pump capacity.

• Do not start the pump until it is completely submerged in the
liquid.

• As the valve is being opened, the drawdown should be checked to
ensure that the pump always remains submerged.

• To ensure the necessary cooling of the motor, the pump should
never be set so low that it gives no water. If the flow rate
suddenly falls, the reason might be that the pump is pumping
more water than the well can yield.

Water Impurities

• If there are impurities in the water, the valve should be opened
gradually as the water becomes clearer. The pump should not be
stopped until the water is clean, otherwise the pump parts and the
check valve may become clogged.

• When the water is clean the valve should be fully opened.

Minimum flow rate

• To ensure the necessary cooling of the motor, the pump flow rate
should never be set to a value lower than .2 gpm. If the flow rate
suddenly falls, the reason might be that the pump is pumping
more water than the well can yield.

Note: The pump's dry-running protection is effective only within

the recommended duty range of the pump.

Note: Do not let the pump run against a closed discharge valve for

more than 5 minutes. When the discharge valve is closed,
there is no cooling flow and there is a risk of overheating in
motor and pump.

Motor HP Min. Generator Size (Watts)

1/3 - 1/2 A 1000
1/2 - 3/4 B 1700
1- 11/2 C 2000

Operating the Pump

Page 10

18. Starting the Pump for the First Time

When the pump has been connected correctly, the pump should be
started with the discharge valve closed approximately one-third. Due
to the soft start feature, the pump takes approximately 2 seconds to
develop full pressure.

Motor Cooling and Other Considerations

• Make sure the well is capable of yielding a minimum quantity

of water corresponding to the pump capacity.

• Do not start the pump until it is completely submerged in the
liquid.

• As the valve is being opened, the drawdown should be checked to
ensure that the pump always remains submerged.

• To ensure the necessary cooling of the motor, the pump should
never be set so low that it gives no water. If the flow rate
suddenly falls, the reason might be that the pump is pumping
more water than the well can yield.

Water Impurities

• If there are impurities in the water, the valve should be opened
gradually as the water becomes clearer. The pump should not be
stopped until the water is clean, otherwise the pump parts and the
check valve may become clogged.

• When the water is clean the valve should be fully opened.

Minimum flow rate

• To ensure the necessary cooling of the motor, the pump flow rate
should never be set to a value lower than .2 gpm. If the flow rate
suddenly falls, the reason might be that the pump is pumping
more water than the well can yield.

Note: The pump's dry-running protection is effective only within

the recommended duty range of the pump.

Note: Do not let the pump run against a closed discharge valve for

more than 5 minutes. When the discharge valve is closed,
there is no cooling flow and there is a risk of overheating in
motor and pump.

Operating the Pump

Built-in protection

The motor incorporates an electronic unit which protects the motor in
various damaging situations.

In case of overload, the built-in overload protection will stop the pump for 5
minutes. After 5 minutes, the pump will attempt to restart.
If the pump is started and the well has not recovered, the pump will stop
after 30 seconds.

If the pump has been stopped as a result of dry running, it will start
automatically after 5 minutes or the reset time set by the R100.

Resetting the pump:

Switch off the electricity supply for 1 minute.
The motor is protected against the following conditions:

- dry running,

- voltage surges (up to 5000 V),

- overvoltage,

- undervoltage,

- overload

- overtemperature.

MSE 3NE Motors:

Note: To set Dry-Run limit in the MSE-NE pumps, you need to connect
the pump to a Redi-Flo3 status box. Refer to Redi-Flo3 status box I&O for
proper connections.

To set Dry-Run protection, follow these steps:

1. Start the pump against closed discharge.

2. Rapidly read the power consumption value (W) in the R100
display 2.5.

3. Multiply this value by 0.9.

4. Within the R100, go to display 4.6 and enter the new value
(minimum power limit).

5. Go to display 4.7 and change the setting to “Active”.

For further information on dry-running, refer to RediFlo3 Status Box I&O.

Maintenance and service:

The pumps are normally maintenance-free. Deposits and wear may occur.
For that purpose, service kits and service tools are available from
GRUNDFOS. The GRUNDFOS Service Manual is available on request.
The pumps can be serviced at a GRUNDFOS service center.

19. Assembly of Pump and Motor

To assemble pump end and motor, proceed as follows:

1. Place the motor horizontally in a vice and tighten it, see fig. 12.

2. Grease the motor shaft end with a vegetable based grease.

3. Screw the pump end on the motor. A spanner may be used on the
clamping faces of the pump part, see fig.12.

4. Install cable guard as described on page 7.

When pump end and motor have been assembled correctly, there must not
be a clearance between pump end and motor.

To disassemble reverse procedure.

Fig. 12

Page 11

Assembly/Disassembly

19. Assembly of Pump and Motor

To assemble pump end and motor, proceed as follows:

1. Place the motor horizontally in a vice and tighten it, see fig. 12.

2. Grease the motor shaft end with a vegetable based grease.

3. Screw the pump end on the motor. A spanner may be used on the
clamping faces of the pump part, see fig.12.

4. Install cable guard as described on page 7.

When pump end and motor have been assembled correctly, there must not
be a clearance between pump end and motor.

To disassemble reverse procedure.

Fig. 12

Page 12

70 mm

30 mm

2.91"

1.2"

Use pump vise here.

Troubleshooting

Page 13

Fault Cause Remedy

1. The pump does not run a. The fuses are blown Replace the blown fuses. If the new fuses blow
b. The GFI circuit breaker has tripped. Reset the circuit breaker.

c. No electricity supply. Contact the Electricity provider.
d. The motor protection has cut off the Check for motor/pump blockage.

electricity supply due to overload.
e. The drop cable is defective. Repair/replace the pump/cable.
f. Overvoltage has occurred. Check the electricity supply

2. The pump runs but gives a. The discharge is closed. Open the valve
no water. b. No water or too low water level in well. See item 3a.

c. Check valve is stuck in it’s closed position. Pull the pump and clean or replace the valve.
d. The suction strainer is closed. Pull the pump and clean the strainer.
e. The pump is defective. Repair/replace the pump.

3. The pump runs at reduced a. The drawdown is larger than anticipated. Increase the installation depth of the pump, throttle the pump
capacity. or replace it with a smaller capacity model.

b. The valve s in the discharge pipe are partly Check and clean/replace the valves as necessary.

closed/blocked.
c. The discharge pipe is partly chocked by Clean/replace the discharge pipe.

impurities (Iron bacteria).
d. The non- return valve of the pump is blocked. Pull the pump and check/replace the valve.
e. The pump and the riser pipe are partly choked Pull out the pump. Check and clean or replace the pump, if

by impurities (Iron bacteria). necessary. Clean the pipes.
f. The pump is defective. Repair/replace the pump.
g. Hole in discharge pipe. Check and repair the piping.
h. The riser pipe is defective. Replace.
i. Undervoltage has occurred. Check the electricity supply.

4. Frequent starts and stops. a. The differential of the pressure switch Increase the differential. However, the stop pressure must
between the start and stop pressures is too not exceed the operating pressure of the pressure tank, and
small. the start pressure should be high enough to ensure sufficient

b. The water level electrodes or level switches Adjust the intervals of the electrodes/level switches to ensure

in the reservior have not been installed suitable time between the cutting-in and cutting-out of the
correctly pump. See installation and operating instructions for the

c. Checkvalve is leaking or stuck half-open. Pull the pump and clean/replace the non-return valve.
d. The supply voltage is unstable. Check the electrical supply.
e. The motor temperature is too high. Check the water temperature.

Troubleshooting

Page 14

too, check the electrical installation and the drop cable.

water supply.

automatic devices used. If the intervals between start/stop
cannot be changed via the automatics, the pump capacity
may be reduced by throttling the discharge valve.

Instruments not allowed:

Note: The use of the following instruments is not allowed during fault
finding:

Note: When measuring, use RMS-instruments.

Checking the motor and cable:

Environment

During handling, operation, storage and transport, all environment
regulations dealing with the handling of hazardous materials must be
observed.

When the pump is taken out of operation, it must be ensured
that no hazardous material is left in the pump and in the riser
pipe, which can be injurous to persons and the environment.

Disposal

Disposal of this product or parts of it must be carried out according to the
following guidelines:

1. Use the local public or private waste collection service.

2. If such waste collection service does not exist or cannot handle the
materials used in the product, please deliver the product or any
hazardous materials from it to your nearest GRUNDFOS company or
service center.

Insulation

Test

Resistance

Test

High-voltage

Test

Measure the voltage L1
(RMS) between phase
and L2. Connect the
voltmeter to the terminals
at the connections.

The voltage should, when the
motor is loaded, be within the
range specified on Page 4, large
variations in supply voltage
indicate poor electricity supply,
and the pump should be stopped
until the problem has been
corrected.

Measure the current (RMS)
while the pump is operating
at a constant discharge
head(if possible, at capacity
where the motor is heavily
loaded). For maximum
current, see motor
nameplate.

If the current exceeds the full load
current, there are the following
possible faults:
Poor connection in the leads,
possibly in the cable joint.
Too low supply voltage, see item 1
on Page 13.

Page 15

supply Voltage: 1x200-240V +6%/-10%, 50/60 Hz, PE

Operation via Generator: As a minimum, the generator output
Starting Current: The motor starting current is equal to the
Starting: Soft starting

Run-up Time: Maximum : 2 seconds
Motor Protection: The motor is protected against:

Power Factor: PF= 1
Service Factor: 0.33-0.50A[HP]-1.75 at 230V

Motor Cable: 3 Wire, 12 AWG TEFZEL

Length Available in 5 ft. increments from 25ft.- 300ft.

Motor Liquid: Type SML 2
pH Values: Redi-Flo3: 5 to 9
Liquid Temperature: The temperature of the pumped liquid must

Note: if liquids with a viscosity higher than that of water are to be pumped,
please contact GRUNDFOS

Discharge Port: 5SQE-NE- 1"NPT

STORAGE CONDITIONS

Minimum Ambient Temperature: -4°F
Maximum Ambient Temperature: +140°F
Freeze Protection: If the pump has to be stored after use, it

OPERATING CONDITIONS

Minimum Ambient Fluid Temperature: 34°F
Maximum Ambient Fluid Temperature: +104°F

APPROXIMATE DIMENSIONS AND WEIGHT

Motor Dimensions (MSE3-NE):

0.33-0.50A[hp] 20.9" length x 2.68" diameter

0.50-0.75B[hp] 20.9" length x 2.68" diameter

1.0-1.5C[hp] 22.3" length x 2.68" diameter

Motor Weights (MSE3-NE):

0.33-0.50A[hp] 6.0 Lbs

0.50-0.75B[hp] 7.1 Lbs

1.0-1.5C[hp] 8.2 Lbs

Pump End Dimensions:

Pump Diameter: 2.68"
Pump Diameter, incl. cable guard: 2.91"

Pump End Dimensions(min. and max.):

5SQE-NE 8.1" to 13.6"
10SQE-NE 8.1" to 14.5"
15SQE-NE 8.1" to 14.5"
22SQE-NE 8.1" to 14.5"
30SQE-NE 8.1" to 11.3"

Pump End Weights(min. and max.):

All Redi-Flo3 Models 2.2 lbs to 3.5 lbs
Well Diameter (minimum): 3"
Installation Depth (Maximum): 500 feet, below static water level.

Troubleshooting

Technical Data

Page 16

supply Voltage: 1x200-240V +6%/-10%, 50/60 Hz, PE

Operation via Generator: As a minimum, the generator output

must be equal to the motor P1[KW] +10%

Starting Current: The motor starting current is equal to the

highest value stated on the motor nameplate

Starting: Soft starting
Run-up Time: Maximum : 2 seconds
Motor Protection: The motor is protected against:

Dry running, overvoltage, undervoltage,
overload, overtemperature

Power Factor: PF= 1
Service Factor: 0.33-0.50A[HP]-1.75 at 230V

0.50-0.75A[HP]-1.4 at 230V

1.0 -1.5C[HP] -1.15 at 230V
Motor Cable: 3 Wire, 12 AWG TEFZEL
Length Available in 5 ft. increments from 25ft.- 300ft.

Motor Liquid: Type SML 2
pH Values: Redi-Flo3: 5 to 9
Liquid Temperature: The temperature of the pumped liquid must

not exceed 104°F.

Note: if liquids with a viscosity higher than that of water are to be pumped,
please contact GRUNDFOS

Discharge Port: 5SQE-NE- 1"NPT

10-15SQE-NE- 1 1/4" NPT
22-30SQE-NE- 1 1/2" NPT

STORAGE CONDITIONS

Minimum Ambient Temperature: -4°F
Maximum Ambient Temperature: +140°F
Freeze Protection: If the pump has to be stored after use, it

must be stored on a frost-free location or it
must be ensured that the motor liquid is
frost-proof. (The motor must be stored

without being filled with motor liquid.)

OPERATING CONDITIONS

Minimum Ambient Fluid Temperature: 34°F
Maximum Ambient Fluid Temperature: +104°F

APPROXIMATE DIMENSIONS AND WEIGHT

Motor Dimensions (MSE3-NE):

0.33-0.50A[hp] 20.9" length x 2.68" diameter

0.50-0.75B[hp] 20.9" length x 2.68" diameter

1.0-1.5C[hp] 22.3" length x 2.68" diameter

Motor Weights (MSE3-NE):

0.33-0.50A[hp] 6.0 Lbs

0.50-0.75B[hp] 7.1 Lbs

1.0-1.5C[hp] 8.2 Lbs

Pump End Dimensions:

Pump Diameter: 2.68"
Pump Diameter, incl. cable guard: 2.91"

Pump End Dimensions(min. and max.):

5SQE-NE 8.1" to 13.6"
10SQE-NE 8.1" to 14.5"
15SQE-NE 8.1" to 14.5"
22SQE-NE 8.1" to 14.5"
30SQE-NE 8.1" to 11.3"

Pump End Weights(min. and max.):

All Redi-Flo3 Models 2.2 lbs to 3.5 lbs
Well Diameter (minimum): 3"
Installation Depth (Maximum): 500 feet, below static water level.

Technical Data

Page 17

PUMP TYPE HP VOLTAGE MAX. AMPS

5SQE03A-90-NE 1/3 A 230V/115V 3.9/7.8
5SQE03A-120-NE 1/3 A 230V/115V 3.9/7.8
5SQE05A-170-NE 1/2 A 230V/115V 4.9/9.8
5SQE05B-210-NE 1/2 B 230V 4.9
5SQE05B-250-NE 1/2 B 230V 4.9
5SQE07B-290-NE 3/4 B 230V 7.6
5SQE10C-340-NE 1 C 230V 7.6
5SQE10C-380-NE 1 C 230V 7.6
5SQE10C-420-NE 1 C 230V 7.6

10SQE03A-100-NE 1/3 A 230V/115V 3.9/7.8
10SQE05A-140-NE 1/2 A 230V/115V 4.9/9.8
10SQE05B-180-NE 1/2 B 230V 4.9
10SQE07B-220-NE 3/4 B 230V 7.6
10SQE10C-260-NE 1 C 230V 7.6
10SQE10C-300-NE 1 C 230V 7.6
10SQE15C-340-NE 1 1/2 C 230V 11.1

15SQE03A-70-NE 1/3 A 230V/115V 3.9/7.8
15SQE05A-110-NE 1/2 A 230V/115V 4.9/9.8
15SQE05B-130-NE 1/2 B 230V 4.9
15SQE07B-170-NE 3/4 B 230V 7.6
15SQE10C-200-NE 1 C 230V 7.6
15SQE10C-230-NE 1 C 230V 7.6
15SQE15C-270-NE 1 1/2 C 230V 11.1

22SQE03A-40-NE 1/3 A 230V/115V 3.9/7.8
22SQE05A-80-NE 1/2 A 230V/115V 4.9/9.8
22SQE05B-110-NE 1/2 B 230V 4.9
22SQE07B-140-NE 3/4 B 230V 7.6
22SQE10C-180-NE 1 C 230V 7.6
22SQE15C-210-NE 1 1/2 C 230V 11.1

30SQE05A-40-NE 1/2 A 230V/115V 4.9/9.8
30SQE05B-80-NE 1/2 B 230V 7.6
30SQE10C-120-NE 1 C 230V 7.6
30SQE15C-160-NE 1 1/2 C 230V 11.1

PRODUCT PART NUMBER

CU 300 96422776
Flow Sleeve 96037505
Grease 96037562
Grundfos SPP1 Pote ntiometer 625468
RediFlo3 Motor Leads - available in 5ft. increments See price list

R100 Infrared Remote 625333
HP Infrared Printer 822408 620480

Technical Data

Page 18

ACCESSORIES

PRODUCT PART NUMBER

CU 300 96422776
Flow Sleeve 96037505
Grease 96037562
Grundfos SPP1 Pote ntiometer 625468
RediFlo3 Motor Leads - available in 5ft. increments See price list

25ft 96037428
50ft 96037429

75ft 96037430
100ft 96037431
125ft 96037432
150ft 96037433
175ft 96037434
200ft 96037435
225ft 96037436
250ft 96037437
300ft 96037438

R100 Infrared Remote 625333
HP Infrared Printer 822408 620480