Grundfos SRP Series User manual

GRUNDFOS INSTRUCTIONS
SRP
60 Hz, North America
Installation and operating instructions

Table of contents
SRP
3
English (US)
Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Español (MX)
Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Français (CA)
Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

English (US)
4
English (US) Installation and operating instructions
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.

5
English (US)
CONTENTS
Page
1. Symbols used in this document
1. Symbols used in this document 5
2. Product introduction 6
2.1 Applications 6
2.2 Technical data 6
3. Identification 6
3.1 Type key 6
3.2 Nameplate 7
4. Safety 7
4.1 General safety instructions 7
5. Transportation, delivery and storage 7
5.1 Transportation 7
5.2 Delivery 7
5.3 Storage 7
6. Installation 8
6.1 Positioning 8
6.2 Torque values 9
6.3 Installation instructions 9
7. Electrical connection 11
7.1 Motor protection 11
7.2 Gearbox protection 12
7.3 Overload relays 12
7.4 Starting method 12
7.5 Wiring diagrams 13
7.6 Direction of rotation 13
7.7 Protection from electro-chemical corrosion 13
7.8 Frequency converter operation 13
8. Start-up 14
9. Service 14
9.1 Contaminated pump 14
9.2 Service chart 15
9.3 Oil 16
9.4 Oil change 16
10. Fault finding 17
11. Technical data 18
11.1 Motor 18
11.2 Gearbox 18
11.3 Shaft seals 18
11.4 Propeller 18
11.5 Sound pressure level 18
12. Disposal 18
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
Warning
The use of this product requires experience with
and knowledge of the product.
Persons with reduced physical, sensory or men-
tal 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.
Warning
If these safety instructions are not observed,
it may result in personal injury.
Warning
If these instructions are not observed, it may lead
to electric shock with consequent risk of serious
personal injury or death.
Caution
If these safety instructions are not observed,
it may result in malfunction or damage to the
equipment.
Note
Note
Notes or instructions that make the job easier
and ensure safe operation.

English (US)
6
2. Product introduction
Grundfos recirculation pumps type SRP are designed for transfer
of liquids of low to medium viscosity from one tank to another.
Fig. 1 SRP pump
2.1 Applications
Grundfos SRP recirculation pumps are used for the pumping of
return sludge in sewage treatment plants and for other pump
applications involving a high flow rate and low head. The pumps
are designed for continuous operation fully submerged
(S1 operation).
In order not to overload the pumps and expose them to corrosion,
the following limitations must be observed.
* With a maximum dry solid content of 1.5 %.
2.2 Technical data
3. Identification
3.1 Type key
TM03 0374 3308
Pos. Description
4 Pump rack
7Motor
8 Gearbox
10 Propeller
22 Hydraulic inlet
Liquid temperature 41 °F to 104 °F
(5 °C to 40 °C)
pH value 4 to 10
Maximum sludge index 14.98 gallon/lb
(125 ml/g)
Maximum dynamic viscosity 500 CSt (mPas)
Maximum density 8.846 lb/gallon
(1060 kg/m3)
Chloride content ≤1.67 x 10-3 lb/gallon
(200 mg/l)
(for stainless steel AISI type 304)
Voltage tolerance - 10 %/+10 % of
nameplate value
Enclosure class IP68
Insulation class F
Maximum installation depth 66 ft (20 m) below liquid
level
Maximum number of starts per hour 20
Standard length of power cable 30, 50 or 80 ft
(10, 15 or 25 m)
Standard cable length on all winches 30, 50 or 80 ft
(10, 15 or 25 m)
22 4710
8
Example SRP. 11. 12. 524. 08. 6. 0P
Type range
SRP: Submersible recirculation pump
Motor output power, P2
P2: Code from type designation/10 [hp]
11 1.1 hp
Propeller diameter
12: 12 inches
Propeller speed
524: 524 min-1
Propeller blade pitch
08: 8 °
Explosion protection
[-]: Non-explosion-proof
Frequency
5: 50 Hz
Voltage and starting method
0P: 440-480 V, DOL
1P: 440-480 V, Y/D
0Z: Special, DOL
1Z: Special, Y/D
Generation
[-]: First generation
A: Second generation
B: Third generation

7
English (US)
3.2 Nameplate
Fig. 2 Nameplate
The nameplate is on the motor housing. The details on the
nameplate are required for ordering spare parts.
The additional nameplate supplied with the pump should be fixed
in a visible position at the installation site.
4. Safety
4.1 General safety instructions
5. Transportation, delivery and storage
5.1 Transportation
The individual components of the pump must be packed carefully
to prevent any damage to the surface during transportation.
All lifting equipment must be rated for the purpose and checked
for damage before any attempts to lift the components are made.
The lifting equipment rating must under no circumstances be
exceeded.
5.2 Delivery
On delivery, the pump and any accessories supplied with it
should be checked for transport damage. This also applies when
the equipment is delivered to the installation site.
If the pump or any accessories have been damaged during
transportation, contact your local Grundfos company before
continuing to install the equipment. Do not dismantle a damaged
new component for further inspection, unless instructed by your
local Grundfos representative.
The packaging material must be disposed of according to local
regulations.
5.3 Storage
The pump must be stored in a dry location in which the
temperature is not subject to major fluctuations.
If the pump has been stored for more than one year, the gearbox
oil must be changed. The oil must be changed even if the pump
has never been in use. This is necessary because of natural
aging of mineral oil lubricants.
TM04 9249 1037
Pos. Description
1 Type designation
2 Production code
3 Propeller diameter
4 Liquid temperature range
5 Product number
6 Enclosure class according to IEC
7 Serial number
8 Insulation class
9 Rated voltage
10 Rated speed (propeller)
11 Weight
12 Starting current
13 Frequency
14 Number of poles
15 Rated current
16 Power factor
17 Motor power P1/P2
18 Model
19 Maximum installation depth
20 Service factor
Warning
Before starting work on the product, make sure
that the fuses have been removed or the mains
switch has been switched off. Make sure that the
power supply cannot be accidentally switched
on.
Type
P.c.
P1/P2
Cos.
Model
in
A
Hz
F
ø
I
N
n
N
Pol
T
Prod.No:
96257011
See MANUAL!
CH-6105 Schachen
Insul.class:
No:
IP
U V
I
start
Weight lb
/minA
15 1214 13
1234 567
18
17
16
19
HP
ft
9
10
11
8
S.F.:
20
Warning
These safety instructions as well as the
instructions in each individual section must be
followed when transporting, storing, handling
and operating the pump.
The pump must be installed, connected, started
up and serviced by qualified persons.
Beware of rotating parts.
Make sure that persons cannot accidentally fall
into the tank, e.g. by installing a cover or railing.
Warning
Make sure that the pump cannot roll or fall over.
Warning
Before attempting to lift or otherwise handle the
individual components of the pump, observe any
local regulations that set limits for the weight of
the components to be lifted manually by
individuals, i.e. handled without the use of lifting
equipment.
Warning
A damaged pump must not be installed.

English (US)
8
6. Installation
During installation, the pump must only be lifted when using the
suspension point.
The lifting equipment supplied with the pump as well as the cable
used for lifting and lowering the pump into the tank must not be
used as universal lifting equipment.
6.1 Positioning
Correct positioning of the pump is essential to ensure trouble-free
operation and long life. The following guidelines must be
observed.
• If more than one pumps is installed in the same tank,
they must not generate opposite flows, meaning that different
inlets/outlets should not destroy the general flow.
• The distance from the center of the pump to the tank bottom
(Hmin) must notbe less than the propeller diameter. See fig. 3.
• The distance from the top of the pump rack to the liquid
surface (HABOVE) must fulfil one of the following two
requirements:
– For pumps with vortex shield, the distance must at least be
equal to the propeller diameter.
– For pumps without vortex shield, the distance must at least
be equal to 1.5 times the propeller diameter. See fig. 3.
Fig. 3 Distance to liquid surface and tank bottom
Fig. 4 Open installation
* Guide claws are only available for SRP.xx.32.
Caution
Never hang the pump by the power cable.
Never let the pump run while hanging by the
lifting equipment.
Note
Note
Actual mounting assemblies supplied locally may
differ slightly from the detailed assembly
described although functionality will be
maintained
TM02 9478 2704
Hmin HAbove
TM04 3962 0509
Pos. Designation
1Bottom mounting bracket and guide claws on
connection flange *
2 Guide rail
4 Pump rack
5 Top mounting bracket
12 Crane foot
13 Crane with winch and lifting cable
15 Lifting cable incl. cable clamp
17 Cable clamp
18 Cable sock, incl. shackle 10
19 Intermediate mounting bracket
23 Connection flange
13
5
17
15
23
1
1
2
19
12
18

9
English (US)
6.2 Torque values
All nuts and screws used for the installation must be made of
stainless steel.
Use grease (Alu-paste) together with a spring washer or lock nut;
otherwise, use Loctite or a similar product for lubrication and
locking.
All stainless-steel nuts and screws should be tightened to the
following torquevalues:
When mounting the hub/propeller, use lock washer (pos. 1107),
and tighten the two shaft nuts (pos. 1106) to a torque of
37 lbf.ft (50 Nm). See fig. 5.
Fig. 5 Shaft nuts on propeller shaft
6.3 Installation instructions
See section 6.2 Torque values and fig. 4.
1. Weld the connection flange to the cast-in pipe end in the tank.
2. Weld the profile section to the connection flange and pipe end.
Place it in position 12 o'clock.
Fig. 6 Profile section on connection flange
3. SRP.xx.32.xx: Weld the guide claws to the connection flange.
See fig. 7.
Fig. 7 Position of guide claws
4. Drill the holes for the mounting screws for the top mounting
bracket in the concrete.
5. Mount the screws and fit the top mounting bracket.
6. Depending on the length of the guide rail, weld the turnable
part of an intermediate mounting bracke (pos.19, fig. 4) to the
guide rail.
Fig. 8 Top mounting
7. Position and align the guide rail with the profile section on the
connection flange. Shorten the column profile (pos. 2) to the
correct length to match the position of epoxy insulator (pos. C)
at the top mounting bracket. A gap of 0.2 to 0.4 in (5 to 10 mm)
between collar of epoxy and guide rail is optimal.
See fig. 8.
8. Remove the epoxy insulator and the turnable metal part by
removing the center screw (pos. A) and the two mounting
screws (pos. B).
9. Adapt the outside of the square epoxy insulator to the inside of
the guide rail. The epoxy insulator must fit tightly inside the
guide rail.
10.Place the guide rail on the profile section on the connection
flange and mount the top end with the epoxy insulator and the
turnable metal part on the already installed top mounting
bracket. Tighten the three screws (pos. A) and (pos. B) in the
desired position.
11.Fit an intermediate mounting bracket to the turnable part
welded on to the profile tube in step 6. Drill holes in the tank
wall, fit screws in the bracket and tightening the screws.
12.Drill the holes for the mounting screws for the crane foot in the
concrete.
13.Mount the crane foot and fit and tighten the screws.
Screws F-Class 70
[lbf.ft (Nm)] Screws F-Class 80 [lbf.ft (Nm)]
M6 6.5 (8.8) 8.7 (11.8)
M8 15.8 (21.4) 21.2 (28.7)
M10 32.5 (44) 42.8 (58)
M12 54.6 (74) 73.8 (100)
M16 135 (183) 180.7 (245)
M20 273 (370) 364.4 (494)
TM04 4448 1309TM04 9305 3810
1106
1107
2.5x2.5x1/8 in
A
C
B
D
TM03 3028 0106
TM04 2719 2908
C
A
B31

English (US)
10
14.Mount the lifting cable (pos. 15, fig. 4) on the pump rack using
the shackle. See fig. 9.
Fig. 9 Mounting of lifting cable on the pump rack
15.Mount the top end of the safety cable in hole (pos. 31, fig. 8) of
the top mounting bracket by means of a shackle. The other
end of the safety cable ends in a shackle through which the
lifting cable must run.
Fig. 10 Safety cable
16.Fix the power cable to the lifting cable by means of a cable
clamp approx. 2.5 ft (0.8 m) above the pump. This will prevent
the cable from falling down and becoming entangled in the
propeller during operation. Connect the cable clamp to the
lifting cable above the cable clamp by means of a snap hook.
See fig. 11. Attach the power cable to the lifting cable by
means of cable clamps placed at 3 ft (1 m) intervals.
Fig. 11 Attaching the power cable to the lifting cable
17.Position the crane in the foot and mount the lifting cable in the
drum of the winch.
18.Lift the complete pump (pump rack with motor) using the crane
and slide it over the guide rail.
19.Slowly lower the pump into the tank and down to position on
the connection flange.
20.Mount the cable sock (pos. 18) to the top mounting bracket
using the shackle, and pull the motor cable through it to the
desired position. See fig. 12. The power cable should be
slightly tightened.
Fig. 12 Top mounting bracket with lifting and safety cables and
cable sock
21.Dismantle the lifting cable from the winch and fit it to the wire
clamping (pos. 20) on the top mounting bracket.
Use the lifting cable as a relief for the power cable. For this
reason, the lifting wire must always be tightened.
22.Connect the power cable to the terminals in the control
cabinet.
TM04 4006 0509
TM04 3932 0409
TM02 4938 1802
Caution
Always leave at least three turns of cable on the
drum. Otherwise the cable may break loose from
the drum attachment.
15
Power cable
Cable clamp
Lifting cable (15)
Snap hook
Cable clamp (17)
Note
Note
Consider and follow the separate installation and
operating instructions for cranes.
TM04 3929 0409
Caution
Dismantle the lifting cable from the crane before
starting the pump.
Warning
Make sure the power supply to the control
cabinet has been switched off.
20
18
31
B