GRUNDFOS INSTRUCTIONS
SD - Sewage, dry-pit, non-clog pump
60 Hz, North America
Installation and operating instructions
SD - Sewage, dry-pit, non-clog pump
English (US)
Installation and operating instructions ..........................................................4
Table of contents
3
English (US)
English (US) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. Limited warranty ..........................4
2. General information ........................4
2.1 Hazard statements..........................4
2.2 Notes ..................................4
2.3 Target group..............................5
3. Receiving the product .......................5
3.1 Inspecting the product........................5
3.2 Transporting the product ......................5
3.3 Component and accessory manuals ...............5
4. Installing the product .......................5
4.1 Factory support ............................5
4.2 Locating the pump ..........................5
4.3 Mechanical installation .......................5
4.4 Electrical connection.........................7
5. Starting up the product ......................7
5.1 Priming .................................7
5.2 Preparing the pump for start-up ..................7
5.3 Starting the pump ..........................8
6. Storing and handling the product ...............9
6.1 Handling the product ........................9
6.2 Short-term storage ..........................9
6.3 Long-term storage ..........................9
7. Product introduction........................9
7.1 Applications ..............................9
7.2 Installation types ...........................9
7.3 Identification.............................10
8. Operating the product ......................13
8.1 Normal operation ..........................13
8.2 Stopping the product .......................13
8.3 Extended shutdown ........................13
9. Fault finding the product ....................14
10. Servicing the product ......................14
10.1 Preventative maintenance schedule ..............15
11. Disposing of the product ....................15
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 that 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 and accepted codes of good practice. The warranty
does not cover normal wear and tear. 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
limitations 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. Products which are
repaired or replaced by Grundfos or authorized service center
under the provisions of these limited warranty terms will continue to
be covered by Grundfos warranty only through the remainder of the
original warranty period set forth by the original purchase date.
2. General information
2.1 Hazard statements
The symbols and hazard statements below may appear in
Grundfos installation and operating instructions, safety instructions
and service instructions.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
The hazard statements are structured in the following
way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.
2.2 Notes
The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol indicates that an
action must be taken.
A red or grey circle with a diagonal bar, possibly with a
black graphical symbol, indicates that an action must not
be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.
4
2.3 Target group
This installation and operating instructions are intended for
professional installers and for the operators of the product.
We recommend that installation is carried out by skilled persons
with technical qualifications required by the specific legislation in
force.
3. Receiving the product
3.1 Inspecting the product
After transport and before installation, the product must be
inspected.
To complete the inspection, follow the steps below:
1. Check the product for transport damage. Contact the
transporter immediately in case of damage.
2. Check that the delivered products correspond to the order.
3. Check the positions and sizes of fittings.
4. Retighten various connections, as they may have become
loose during transport.
Related information
6.2 Short-term storage. See page 9.
6.3 Long-term storage. See page 9.
3.2 Transporting the product
You must observe the following points:
• You must fix the product securely during transport.
• You must not drop the product.
• You must not drag the product over the ground.
WARNING
Overhead load
Death or serious personal injury
‐ Transport the product by means of a lifting strap or
fork-lift.
Related information
6.1 Handling the product. See page 9.
3.3 Component and accessory manuals
Pumps delivered with components or accessories are not furnished
with the manuals from the manufacturer. Grundfos recommends
that the manuals from the manufacturer for the components and
accessories be referenced.
4. Installing the product
4.1 Factory support
For Engineered to Order (ETO) products, we recommend that you
invite a Grundfos service engineer to supervise installation and
startup. This is to ensure a proper installation. You will have the
opportunity to review the factory-recommended instructions.
4.2 Locating the pump
Install the product in a location that meets the following
requirements:
1. Locate the pump as close as possible to the liquid supply. Use
the shortest and most direct inlet pipe practical with the least
number of elbows and fittings.
2. Locate the pump below the system level wherever possible.
This will facilitate priming, assure a steady liquid flow, and
provide a positive inlet pressure.
3. The net positive suction head (NPSH) available must always
be equal to or exceed the required NPSH specified on the
pump performance curve. Make sure the required NPSH is
provided at the inlet.
4. Always allow sufficient accessibility space for maintenance and
inspection with ample headroom for use of a hoist strong
enough to lift the product.
5. Do not expose the product to flooding or sub-zero
temperatures to prevent the pumped liquid from freezing.
Related information
4.3.5.1 Pipes. See page 6.
4.3 Mechanical installation
4.3.1 Recommendation for pump foundation
All rotating equipment generates vibrations when an impeller or
rotor is turning at high speeds. Proper installation and anchorage of
the pumps and installation accessories are critical to limit vibrations
and achieve reliable installation. To ensure acceptable vibration
levels in the field, all parts of the system must be sufficiently stiff
and firmly anchored to minimize vibrations:
This applies for pumps above 20 hp (15 kW).
• The foundation and concrete must be of adequate strength to
support the weight of the pump including accessories, the
weight of the liquid passing through the pump, and the forces
generated by the pump.
• The mass of the concrete foundation must be a minimum of
three to five times the mass of the supported equipment and
must have sufficient rigidity to withstand the axial, transverse,
and torsional loadings generated by these machines.
• The foundation must be 5.9 in (15 cm) wider than the baseplate
for pumps up to 469 hp (350 kW) and 9.8 in. (25 cm) wider for
larger pumps.
• The concrete used in the foundation must have a minimum
tensile strength of 362 lbf/in2 (250 N/cm2).
• Always use epoxy grout to fasten the pump base plate to the
foundation.
4.3.2 Pump foundation
Large pumps will be mounted on a steel base anchored to
two concrete pillars.
Install the pump permanently on a firm, raised concrete foundation
of sufficient size to dampen any vibration and prevent any deflection
or shaft misalignment. The foundation may float on springs or be a
raised part of the floor.
Proceed like this:
1. Pour the foundation without interruption to 0.75- 1.5 in (20-40
mm) below the final pump level. Leave the top of the
foundation rough. Then clean and wet it down.
2. Scour and groove the top surface of the foundation before the
concrete sets to provide a suitable bonding surface for the
grout.
3. Place anchor bolts in pipe sleeves for positioning allowance.
4. Allow enough bolt length for grout, base flange, nuts, and
washers.
5. Allow the foundation to cure several days before proceeding to
install the pump.
English (US)
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3
4
5
6
7
8
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English (US)
4.3.2.1 Foundation, grout and anchor bolt installation
Position Description
1 Finished grouting
2 0.75-1.25 in (19-32 mm) allowance for grout
3 Formwork
4 Pipe sleeve
5 Washer
6 Base plate
7 0.2-0.4 in (5-10 mm)
8 Lug
9 Grout
10 Wedges or shims left in place
11 Top of foundation
4.3.3 Positioning the pump
When the raised concrete foundation has been poured and allowed
to set, proceed as follows:
Fig. Foundation, grout, and anchor bolt installation
6. Construct a formwork around the concrete foundation and pour
grout inside the base plate. The grout will compensate for the
uneven foundation, distribute the weight of the pump, and
prevent shifting.
*1
7. Allow at least 24 hours for the grout to set before proceeding
with the pipe connections.
8. After the grout has thoroughly hardened, check the anchor
bolts and tighten them if necessary. Recheck the pump
alignment after tightening the anchor bolts.
*1
Use an approved, non-shrinking grout.
Related information
4.3.2.1 Foundation, grout and anchor bolt installation. See page 6.
TM054775
4.3.4 Alignment. See page 6.
6.1 Handling the product. See page 9.
4.3.4 Alignment
Coupling alignment must be performed according to the
manufacturer's instructions.
Alignment must be checked periodically after installation.
Vertical pedestal mounted pumps:
The pump is aligned at the factory and the motor support is indexed
on the top and bottom to maintain factory alignment.
Vertical open shaft pumps must be aligned according to
the shaft manufacturer's instructions.
Horizontally mounted pumps:
Pumps and drivers shipped from the factory on a common
baseplate are aligned.
Coupling halves are shipped separated from the pump
and must be aligned during installation.
WARNING
Overhead load
Death or serious personal injury
‐ Never attempt to lift the pump by means of eyebolts
screwed into the driver mounting holes. The bolts are
not strong enough to carry the weight of the entire
pump.
1. Lower the base plate over the anchor bolts and rest it on loose
adjustment wedges or shims placed near each anchor bolt and
at intervals not exceeding 24 in. (610 mm) along each side.
2. Place the shims or wedges so that they raise the bottom of the
base plate 0.75-1.25 in. (19-32 mm) above the foundation,
allowing clearance for grout.
3. Level the pump shaft, flanges, and base plate using a level,
adjusting the wedges or shims, as required.
4. Make sure that the pipes can be aligned to the pump flanges
without placing any strain on either flange.
5. After pump alignment has been established, put nuts on the
anchor bolts and tighten them just enough to keep the
baseplate from moving.
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Related information
3.3 Component and accessory manuals. See page 5.
4.3.5 Pipe connections
4.3.5.1 Pipes
Do not let the pump support the pipes. Use pipe hangers
or other supports at proper intervals to provide pipe
support near the pump.
• Make sure that both the inlet and outlet pipes are
independently supported and properly aligned so that no strain
is transmitted to the pump when flange bolts are tightened.
• Make sure the pipes are as straight as possible, so as to avoid
unnecessary bends and fittings. Where necessary, use 135° or
long-sweep 90° pipe bends to decrease friction loss.
• Where flanged joints are used, make sure that the inside
diameters match properly and that mounting holes are aligned.
• Do not apply force to pipes when making any connections.
4.3.5.2 Inlet pipe
The inlet pipe must be installed in a manner that minimizes
pressure loss and permits sufficient liquid flow into the pump during
starting and operation.
At no point must the diameter of the inlet pipe be smaller
than that of the pump inlet port.
Pump backspin and hydraulic shock can cause severe
damage to the pump and driver.
Observe the following precautions when installing the inlet pipe:
• Run the inlet pipe as direct as possible, and ideally, make sure
the length is at least ten times the pipe diameter. A short inlet
pipe can be the same diameter as the inlet port. A long inlet
pipe must be one or two sizes larger than the inlet port,
depending on the length, and with a reducer between the pipe
and the inlet port.
• Use an eccentric reducer, with the tapered side down.
• If possible, run a horizontal inlet line along an even gradient.
We recommend a gradual upward slope to the pump operating
in suction lift conditions, and a gradual downward slope
operating in positive inlet pressure conditions.
• Avoid any high points, such as pipe loops, as this may create
air pockets and throttle the system or cause erratic pumping.
• Install a gate valve in the inlet line to be able to isolate the
pump during shutdown and maintenance, and to facilitate
pump removal. Where two or more pumps are connected to the
same inlet pipe, install two gate valves to be able to isolate
each pump from the pipe.
Always install isolation valves in positions that prevent air
pockets.
Do not use globe valves, particularly when NPSH is a
critical operating factor.
• During pumping operation, the valves on the inlet line must
always be fully open.
• Install properly sized pressure gauges in the tapped holes on
the pump inlet and outlet flanges or pipes
Pressure gauges will enable the operator to monitor the
pump performance and determine whether the pump
conforms to the parameters of the performance curve
• Install a gate valve near the outlet port to be able to isolate the
pump during shutdown and maintenance, and to facilitate
pump removal
• Any high points in the outlet pipe may entrap air or gas and
thus retard pump operation.
Related information
8.2 Stopping the product. See page 13.
4.4 Electrical connection
All electrical connections must be carried out by a qualified
electrician in accordance with local regulations.
All electrical connections must be carried out in accordance with the
separate wiring diagrams delivered with the system.
WARNING
Electric shock
Death or serious personal injury
‐ Switch off the power supply before making any
electrical connections.
‐ Make sure that the power supply cannot be switched
on accidentally.
‐ Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
‐ Make sure all earth connections are established
correctly before switching on the power supply.
DANGER
Explosive environment
Death or serious personal injury
‐ Observe the rules and regulations generally or
specifically imposed by the relevant responsible
authorities or trade organizations in relation to running
powered equipment in an explosive environment.
5. Starting up the product
English (US)
If cavitation, vapor binding, or other unstable operating
situations occur, the pressure gauges will indicate with
wide fluctuation in the inlet and outlet pressures.
Inlet pipe installation
Fig.
Correct inlet pipe installation with an eccentric reducer
4.3.5.3 Outlet pipe
• A short outlet pipe can be the same diameter as the pump
outlet port. A long outlet pipe must be one or two sizes larger
than the outlet port, depending on the length.
• It is best to use long horizontal outlet pipes.
• install a non-return valve to protect the pump from backflow
and excessive backpressure. The check valve should be
installed between the isolation valve and pump.
5.1 Priming
5.1.1 Priming the pump with positive inlet pressure
The pump should not be started unless it is completely filled with
liquid.
1. Close the outlet valve.
2. Open the inlet valve and allow the volute to be filled with liquid.
3. Open all vents until air is forced out by liquid.
4. Rotate the shaft to free entrapped air from the impeller
passageways.
5. Close all vents when only liquid is flowing out.
5.1.2 Priming the pump with negative inlet pressure
TM072095
If the pump will be operating with a suction lift, priming must be
accomplished by other methods.
1. Replace air vents on the inlet with air ejectors.
2. Install a foot valve on the inlet pipe.
3. Fill the inlet pipe and volute.
5.2 Preparing the pump for start-up
Before starting up the pump, the following items must be performed:
1. Ensure that all electrical switches are in the off position.
2. Ensure that all relevant components are properly aligned and
lubricated.
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English (US)
3. Turn the shaft by hand or use a strap wrench to ensure that it
4. Ensure that inlet and outlet pressure gauges are properly
5. Ensure that the voltage, frequency, and current on the pump
6. Ensure that the direction of rotation is the same as shown by
rotates freely.
If it binds or turns with difficulty the pump must be
disassembled and inspected.
installed and operating.
nameplate match the electrical properties of the power supply.
the arrow on the pump volute.
a. Check the rotation by turning the power on momentarily.
Tightly pressed packing will result in burnt packing and
scoring of the shaft or shaft sleeve.
The stuffing box should slowly leak fluid during operation.
When the leak can no longer be controlled by adjusting
the stuffing box gland, all packing rings must be replaced.
Do not add an additional packing ring to the stuffing box to
adjust leakage.
• The stuffing box is packed at the factory.
• Each ring is cut to the proper length.
The power should be on long enough to
observe the shaft rotation.
b. Observe the coupling direction of rotation.
c. If the coupling is not rotating in the direction that is intended,
interchange any two of the motor leads and recheck.
This is only applicable to three-phase motors.
7. Ensure that the valve on the outlet pipe is closed and the inlet
valve is completely open.
To prevent overheating, operating against a close
outlet valve must be limited to five minutes.
Prolonged operation against a closed outlet valve
may damage the pump due to increased vibrations
and internal recirculation.
8. Refer to driver and controller manuals for specific pre-start
instructions.
5.2.1 Pre start-up Lubricating
5.2.1.1 Radial and thrust bearings
The bearings have been properly lubricated at the factory.
Some horizontal pumps are equipped with an oil splash lubrication
system. The system provides a constant supply of fresh oil to the
bearings.
Excessive grease causes the bearing to over-heat and fail
prematurely.
The end of the rings must come together and not overlap.
• The rings are placed in the stuffing box so that the joints of the
packing rings are staggered.
• The stuffing box is furnished with a lantern or seal ring.
• The box has a tapped connection for grease lubrication.
• 3 oz. (89 mL) of grease must be injected into the stuffing box
every 24 hours of operation.
Automatic grease seal lubrication systems can be
installed as an accessory.
5.2.1.5 Mechanical seal box
Grundfos recommends mechanical seals for pumps
handling hazardous or expensive liquids.
• The standard seal arrangement is a single cartridge or split
seal.
• The sealing fluid is injected in the mechanical seal box through
the seal gland ports or a port in the box.
Grundfos recommends clean water as the sealing fluid in
the seal box.
The sealing fluid must flow through the seal box at a
pressure higher than the maximum operating pressure of
the pump.
Reference the seal manufactures recommendation for
sealing fluid flow rate.
Contact Grundfos for lubrication recommendations in high
temperature applications or other unusual conditions.
5.2.1.2 Couplings
Refer to the manufacturer's lubrication instructions or contact
Grundfos.
5.2.1.3 Flexible shafting
Refer to the manufacturer's lubrication instructions or contact
Grundfos.
5.2.1.4 Stuffing box
The stuffing box gland must be loose when the pump is
first put into operation.
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5.2.1.6 Accessories
Refer to the manufacturer's lubrication instructions for drives,
motors, and other accessories or contact Grundfos.
5.3 Starting the pump
1. Open the inlet valve completely and close the outlet valve
completely.
2. Switch the power supply on.
3. Start the pump.
4. Immediately make a visual check of the pump and inlet pipe.
5. Allow the pump to ramp up to full speed.
6. Slowly open the outlet valve until the operational flow is
achieved.
7. Check the outlet pipe for leaks.
8. Open the isolating valves for the pressure gauges.
9. Record the pressure readings.
10. Verify the pump performance is within the tolerance of the
pump performance curve.
5.3.1 Observations during startup
Observe the operation of the pump for the first day and at frequent
regular intervals for the first two weeks. The initial controls may not
function as intended and therefore, the system should be checked
to verify performance is as intended.
1. Check and monitor the bearing temperature to ensure they are
not overheating.
2. Check that there is the adequate but not excessive weepage
from the stuffing box or that lubrication system to the
mechanical seal is functioning.
3. Verify the pipe connections are tight and the valves are
functioning.
4. Verify that the control system is starting and stopping the pump
as intended.
5. For vertical open shaft installations, verify the flexible shafting
is not whipping or excessively vibrating.
6. Storing and handling the product
6.1 Handling the product
You must observe the following points:
• You must use approved straps of textile or similar materials
when lifting the product.
• You must handle and lift according to the local regulations.
• Point loads must not occur.
DANGER
Crushing hazard
Death or serious personal injury
‐ Place the product on a level surface to prevent
overturning.
If the product is equipped with lifting points, use the points
during handling.
• For periods of storage up to six months or longer, the pump
must be protected against heat and moisture.
• Inspect the pump before putting it into operation. Make sure
that the impeller can rotate freely. Pay special attention to the
condition of the shaft seals or packing and O-rings.
English (US)
7. Product introduction
7.1 Applications
Grundfos recommends this pump for the following applications:
• raw water intake systems
• wastewater treatment plants
• municipal pumping stations
• flood and storm water control
• drainage and irrigation of large quantities of water
• public buildings
• blocks of apartments
• raw sewage
• secondary sewage
• industrial wastewater
• light slurries
• dry dock drainage
• industrial wash water
7.2 Installation types
The pumps are available in the following installation configurations:
• Vertical Pedestal-Mounted (VPM) with the driver directly
mounted on a pedestal and connected to the pump assembly.
• Vertical Open Shaft (VOS) with the driver mounted remotely at
a higher elevation for flood or space requirements.
• Horizontal Ball Bearing (HBB) with a fabricated steel base
supporting both the pump and driver in horizontal position.
Vertical mounting is available in both pier and pedestal
mount on most models above a 12-inch outlet.
6.2 Short-term storage
• The pump and equipment, as shipped, have adequate
protection for short-term storage for up to three months.
• If the product is not to be installed and operated immediately
after receiving it, store it in a clean, dry area at a moderate
ambient temperature.
• For packed-type pumps, the packing glands may be left on the
pump shaft and securely fastened in position. All exposed
machined surfaces should be thoroughly coated with a film of
rust preventative material.
• For packed-type pumps, the stuffing box packing must be
removed and stored in a sealed plastic bag. Seal the end of the
stuffing box with rolled vapor phase inhibitor paper and seal
with weatherproof tape.
• Rotate the shaft by hand periodically, at least monthly, to coat
the bearing with a lubricant to retard oxidation and corrosion.
• Make sure the pump cannot roll or fall over
• Follow the motor manufacturer's storage recommendations
where applicable.
6.3 Long-term storage
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English (US)
7.3 Identification
7.3.1 Nameplate
Position Description
1 Type designation
2 Product number
3 Pump series
4 Rated speed (rpm)
5 Maximum head (ft)
6 Rated head (ft)
7 Maximum pressure (PSI)
8 Production location
9 Net weight
10 Maximum ambient temperature (°F)
11 Rated flow(GPM)
12 Maximum flow (GPM)
13 Impeller trim
14 Frequency (Hz)
15 Production code (YYWW)
16 Serial number
TM070260
Fig. SD pump nameplate
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7.3.2 Type key
Example: SD2H.60.A120.A120.559R.12.D3HB.11.Z
Code Example Designation
SD Grundfos SD pump only
SDS Grundfos SD pump with motor or accessories
2 2-channel impeller
3 3-channel impeller
4 4-channel impeller
5 5-channel impeller
H High pressure
L Low pressure
25 2.5" (65 mm)
30 3" (75 mm)
40 4" (100 mm)
50 5" (127 mm)
60 6" (152 mm)
65 6.5" (165 mm)
85 8.5" (216 mm)
A40 ANSI 4"
A60 ANSI 6"
A80 ANSI 8"
A100 ANSI 10"
A120 ANSI 12"
A140 ANSI 14"
A160 ANSI 16"
A180 ANSI 18"
A200 ANSI 20"
A240 ANSI 24"
A300 ANSI 30"
A360 ANSI 36"
A420 ANSI 42"
A480 ANSI 48"
A540 ANSI 54"
A40 ANSI 4"
A60 ANSI 6"
A80 ANSI 8"
A100 ANSI 10"
A120 ANSI 12"
A140 ANSI 14"
A160 ANSI 16"
A180 ANSI 18"
A200 ANSI 20"
A240 ANSI 24"
A300 ANSI 30"
Pump type
Impeller type
Pressure rangeM Medium pressure
Free passage
Outlet size
Inlet size
English (US)
11
English (US)
Code Example Designation
A360 ANSI 36"
A420 ANSI 42"
A480 ANSI 48"
A540 ANSI 54"
100 = 100 mm Actual impeller diameter (mm)
R Right hand (Clockwise)
L Left hand (Counter clockwise)
4 4-pole
6 6-pole
8 8-pole
10 10-pole
12 12-pole
14 14-pole
16 16-pole
18 18-pole
20 20-pole
22 22-pole
24 24-pole
26 26-pole
28 28-pole
30 30-pole
32 32-pole
34 34-pole
36 36-pole
D
H
1
2
3
4
5
6
7
M Medium duty
H Heavy duty
E Extra duty
S Super duty
B Stuffing box
C Cartridge seal, single
S Split seal, single
X Custom seal
Vertical pedestal-mounted, (Vertical, motor mounted
directly on pump)
Vertical open shaft (Vertical, motor connected to pump
shaft by intermediate shafting)
Horizontal base-mounted (Horizontal, pump and motor
mounted on a common base frame)
Rotation
Number of poles
Installation typeV
Bearing frame size
Bearing arrangement
Seal
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Code Example Designation
1 Cast iron ASTM 48 CL 35
2 316SS
3 Cast iron ASTM 48 CL35 (3% nickel)
4 Ductile Iron, ASTM A536 65-45-12
5 CD4MCu ASTM A890, duplex stainless steel
X Custom material
1 Cast iron ASTM 48 CL 35
2 316SS
3 Cast iron ASTM 48 CL35 (3% nickel)
4 Ductile Iron ASTM A536 65-45-12
5 CD4MCu ASTM A890, duplex stainless steel
X Custom material
[ ] Standard pump Sensor
Z Custom-built product Variants
Material code, volute
Material code, impeller
English (US)
8. Operating the product
8.1 Normal operation
In the event of mechanical failure, the pump must be shutdown and repaired.
In the event of a main power failure do not allow the
automatic restart of the pump.
In the event, the pit is flooded the pump must be removed
and rebuilt or replaced.
• The pump must be operated within 10% of the specified duty
points on the nameplate.
• The pump should be regularly checked and maintained.
• The main power should be monitored for current and voltage
phase imbalance.
• The controllers and drivers must be checked in accordance
with the manufacturer's recommendations.
• The pump must operate without excessive noise or vibration.
Related information
10.1 Preventative maintenance schedule. See page 15.
8.2 Stopping the product
Death or serious personal injury
‐ Make sure that the power supply cannot be switched
on accidentally.
‐ Observe local regulations.
1. Disconnect the main power to the driver.
2. Close all valves connected to the inlet, outlet, and lubrication
pipes.
3. Remove all drain and vent plugs.
The pump will be drained of all fluid.
4. Flush the pump.
Corrosives and abrasives will be removed.
Related information
6.1 Handling the product. See page 9.
6.2 Short-term storage. See page 9.
6.3 Long-term storage. See page 9.
If loud banging or hammering noises are heard while
stopping the pump the system may be experiencing water
hammer.
Consult the system engineer or contact Grundfos if water
hammer is occurring while stopping the pump.
1. Turn off the power to the driver.
2. Allow the pump to come to a complete stop.
8.3 Extended shutdown
DANGER
Electric shock
13
English (US)
9. Fault finding the product
Fault Cause Remedy
The pump does not start or stops without
visible cause.
The pump does not start or stops. The control
panel of the controller indicates that the
motor protective circuit breaker or protection
equipment has tripped.
The pump runs but does not deliver the rated
flow.
The pump is vibrating or emitting excessive
noise.
1. No power supply.
1. A phase is missing.
2. The driver is momentarily overloaded.
3. The impeller is clogged by impurities.
4. The motor protective circuit breaker is
not set correctly.
5. The thermal switches have tripped due
to insufficient motor cooling.
6. The moisture switch in the motor has
tripped.
7. The motor cable is defective.
8. The voltage is fluctuating.
1. The direction of rotation is wrong.
2. The impeller is worn or loose.
3. The pump or pipes are blocked by
impurities.
4. The pump head is too high.
5. there is air in the pump or inlet pipe.
6. The pumped liquid is too dense.
7. The pump is not properly connected to
the coupling.
8. The pipes are leaking.
1. The pump is partially clogged by
impurities.
2. The direction of rotation is wrong.
3. The pump is operating outside of the
specified operating range.
4. The pump is defective.
5. The pump is not properly connected to
the coupling.
6. The pump foundation is damaged.
7. The pump is cavitating.
8. The impeller is not balanced.
1. Verify the power supply is connected.
2. Check the contractor.
1. Contact the power supplier.
2. Reference the driver manufacturer for
troubleshooting.
3. Clear the blockage.
4. Reference the driver manufacturer for
troubleshooting.
5. Reference the driver manufacturer for
troubleshooting.
6. Reference the driver manufacturer for
troubleshooting.
7. Replace the motor cable.
8. Ensure the voltage is within the range of
the driver.
1. Interchange two phases to the driver.
2. Tighten or adjust the impeller trim.
3. Clear the debris.
4. Measure the differential pressure and
compare to the pump curve. Clear any
debris in the outlet pipe.
5. Vent the pump and inlet pipe.
6. Dilute the fluid.
7. Verify the alignment and connections are
properly fastened.
8. Repair the pipes.
1. Clear the debris.
2. Interchange two phases to the driver.
3. Operate the pump at the specified duty
point.
4. Repair the pump using an approved
service provider.
5. Verify the alignment and connections are
properly fastened.
6. Inspect the foundation. If damaged,
uninstall the pump and repair the
foundation.
7. Ensure the pump has the required net
positive suction head.
8. Contact an approved service provider.
10. Servicing the product
14
10.1 Preventative maintenance schedule
To ensure satisfactory operation of the pumping equipment,
frequent inspection, and periodic maintenance is required.
An inspection and maintenance log should be kept and the
inspector must immediately report any problems. Unusual
applications with abnormal heat, moisture, dust, or other adverse
Component Recommended lubricant Frequency Method
Bearing frame: thrust and radial
bearings
(grease lubricated)
Bearing frame: thrust and radial
bearings
(oil lubricated)
Packing
(grease lubricated)
Packing
(water lubricated)
Mechanical seal
(water lubricated)
Shafting
Pump general inspection • Once a week.
• Contact Grundfos • Every 1500 operating hours.
• Contact Grundfos
• Contact Grundfos
• Water
• Water
• Reference manufacturer recommendations.
conditions will require more frequent inspection and service. A
suggested guide for normal applications preventative
maintenance is provided below:
Add 0.5-1 oz of grease to fitting in
the bearing frame.
• Before every startup.
• Once a week.
• Change the oil every 3000
operating hours.
• Every 24 hours of operation.
• If automatic grease
lubrication system is used,
refer to manufacturer's
lubricant recommendations.
• Continuously during
operation
• Refer to manufacturers
recommendation.
• Visually inspect the sight
• Refill when the level falls
• Stop the pump and add
• Equip the pump with an
• Visually inspect for slow and
• Water lubrication is provided
• Equip the pump with a
• Check flow meter to verify
• Equip the pump with a
• Visually inspect all system
• Verify controller operating
• Keep the pit dry and clean.
English (US)
glass.
below the halfway point.
grease to the stuffing box.
automatic lubrication
system.
steady weepage of water.
from the pumped fluid.
freshwater flow system.
flow.
freshwater flow system.
components.
modes.
11. Disposing of the product
This product or parts of it must be disposed of in an
environmentally sound way.
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest Grundfos company
or service workshop.
See also end-of-life information at www.grundfos.com/product-
recycling
15
Grundfos companies
U.S.A.
GRUNDFOS Pumps Corporation
17100 West 118th Terrace, Olathe
Kansas 66061
Phone: +1-913-227-3400
Telefax: +1-913-227-3500
GRUNDFOS Water Utility Inc.
3905 Enterprise Court
P.O. Box 6620
Aurora, IL 60598-0620
Phone: +1-630-236-5500
Fax: +1-630-236-5511
GRUNDFOS CBS Inc.
902 Koomey Road
Brookshire, TX 77423 USA
Phone: 281-994-2700
Toll Free: 1-800-955-5847
Fax: 1-800-945-4777
Peerless Pump
2005 Dr. Martin Luther King Jr
US-46202 Indianapolis, Indiana U.S.A.
Phone:317-925-9661
Canada
GRUNDFOS Canada Inc.
2941 Brighton Road
Oakville, Ontario
L6H 6C9
Phone: +1-905 829 9533
Telefax: +1-905 829 9512
Mexico
Bombas GRUNDFOS de México
S.A. de C.V.
Boulevard TLC No. 15
Parque Industrial Stiva Aeropuerto
Apodaca, N.L. 66600
Phone: +52-81-8144 4000
Telefax: +52-81-8144 4010
Revision Info
Last revised on 13-10-2016
99408013 0718
ECM: 1240468
The name Grundfos, the Grundfos logo, and be think innovate are registered trademarks owned by Grundfos Holding A/S or Grundfos A/S, Denmark. All rights reserved worldwide. © Copyright Grundfos Holding A/S
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