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Date: 02/08/2022
Qty. Description
1 SL.100.240.2.52S.S.EX.51D.A

Note! Product picture may differ from actual product

Product No.: 99965435

Non-self-priming, single-stage, centrifugal pump designed for handling wastewater, process water and unscreened
raw sewage.
The pump is designed for intermittent and continous operations in submerged installation. The Open S-tube®
impeller has a significant non-clogging ability to handle compressible solids to ensure consistent and reliable
operation.
A SmartTrim impeller clearance adjustment system makes it possible to maintain maximum performance.
For installation on auto coupling, the Grundfos SmartSeal gasket system provides a leak-proof connection.
The pump comes with a high efficient Grundfos motor built on IE3 motor components. The pump is explosion-proof.

Further product details

Typical applications are transfer of liquids such as:
• drainage and surface water
• domestic wastewater
• municipal wastewater
• industrial wastewater
• process and cooling water.

The pumps are ideal for pumping the above liquids from places such as:
• municipal network pumping stations
• inlet pumping stations in wastewater treatment plants
• primary clarification pits in wastewater treatment plants
• secondary clarification pits in wastewater treatment plants
• stormwater pumping stations
• public buildings
• residential buildings
• factories and industry.
The pump is suitable for both temporary and permanent installation. The lifting brackets fitted on the pumps enables
easy transportation to and installation on the site.

Pump
The pump housing and motor top are made of cast iron (EN-GJL-250) and the impeller is made of ductile cast-iron
(EN-GJS-500).
The pump housing, motor top and impeller are made of cast iron (EN-GJL-250).
All surfaces of the cast iron parts are protected with cataphoresis coating.
The surface of the cast iron pump parts is afterwards painted with environmental friendly powder coating (type NCS
9000N (black), gloss code 30, thickness 100 µm) which ensures high impact and corrosion protection.
The final pump is assembled from already painted parts which ensures that no rust or scale can be formed in grooves
between parts, etc.
The Open S-tube® impeller has a significant non-clogging ability to handle compressible solids to ensure consistent
and reliable operation.
The key to the Open S-tube® design is simplicity, with no cutting or moving functions that can get worn over time,
thereby ensuring constant, superior efficiency. The simple design means lower life cycle costs because abrasive
wear is reduced and there are fewer clogging incidents.

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1 The shaft seals of the pump consist of two mechanical seals that ensure a reliable sealing between the pumped liquid
and motor. The shaft seal is a cartridge seal that enables easy service.
The combination of the primary and secondary seals in a cartridge shaft seal system results in a shorter assembly
length compared to conventional shaft seals. Furthermore, this design minimises the risk of incorrect fitting and can
be installed on site without the need for special tools.
- Primary seal: Silicon carbide/silicon carbide (SiC/SiC)
- Secondary seal: Carbon/ceramic
The shaft seal is bidirectional, meaning it operates correctly in case of backflow through the pump.
The pump discharge flange is mounted with the Grundfos SmartSeal auto-coupling gasket, that provides a
completely leak-proof connection between the pump and the base unit of the auto-coupling system. This optimises
the efficiency of the entire pumping system and keeps operating costs at a minimum.

Motor
The motor is a watertight, totally encapsulated motor supplied with a 10 m power cable. A watertight stainless-steel
cable entry with soft shape and sealing rings to prevent damage of the cable or leaks.
The motor construction is compact with short shaft which reduces vibrations resulting in increased efficiency and
lifetime of the shaft seal and ball bearings.
Thermal switches are incorporated in the motor windings to protect the motor against overheating.
The pump is designed for speed-controlled operation to keep the energy consumption at a minimum.
To avoid the risk of sedimentation in the pipes, we recommend that you operate the speed-controlled pump within a
speed range of 30 % to 100 % and at a flow rate above 1 m/s.

Controls:
Moisture sensor: with moisture sensors

Liquid:
Liquid temperature range: 0 .. 40 °C
Selected liquid temperature: 20 °C
Density: 998.2 kg/m³

Technical:
Actual calculated flow: 209.5 m³/h
Maximum flow: 320 m³/h
Resulting head of the pump: 28.59 m
Type of impeller: OPEN S-TUBE
Approvals: CE,EAC,RCM,ATEX
Curve tolerance: ISO9906:2012 3B
Cooling jacket (Yes/No): N
Rated speed: 2971 rpm

Materials:
Pump housing: Cast iron
EN 1561 EN-GJL-250
Impeller: Cast iron
EN 1561 EN-GJL-250
ASTM A48-35B
Motor: Cast iron
EN 1561 EN-GJL-250
Shaft seal: SIC-SIC
Secondary shaft seal: SIC-CARBON

Installation:
Range of ambient temperature: -20 .. 40 °C
Maximum operating pressure: 8 bar
Flange standard: DIN
Size of inlet connection: DN 100
Size of outlet connection: DN 100
Pressure rating: PN 10
Maximum installation depth: 20 m

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1 Auto-coupling: 96090994
Base stand: 96102255
Frame range: 52

Electrical data:
Power input P1: 27.4 kW
Rated power - P2: 24 kW
Mains frequency: 50 Hz
Rated voltage: 3 x 380-415/660-690 V
Voltage tolerance: +10/-10 %
Max starts per. hour: 20
Rated current: 51-47/30-28 A
Maximum current consumption: 49 A
Starting current: 582/320 %
Rated current at no load: 24.6 A
Rated speed: 2971 rpm
Motor efficiency at full load: 88 %
Motor efficiency at 3/4 load: 86 %
Motor efficiency at 1/2 load: 84 %
Number of poles: 2
Method of start: Y/D
Enclosure class (IEC 34-5): IP68
Insulation class (IEC 85): H
Explosion proof: yes
Length of power cable: 10 m
Cable type: S1BN8-F
Winding resistance: 0.260 Ohm
Cos phi 1/1: 0.82
Cos phi 1/2: 0.69
Cos phi 3/4: 0.77

Others:
Net weight: 285 kg
Gross weight: 313 kg
Shipping volume: 1.04 m³

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99965435 SL.100.240.2.52S.S.EX.51D.A 50 Hz
H SL.100.240.2., 50Hz eta
[m] [%]
Q = 209.7 m³/h
H = 28.58 m
Liquid temperature during operation = 20 °C

60

55

50 100

45 90

40 80

35 70

30 60

25 50

20 40

15 30

10 20

5 10
Eta pump = 71.7 %
Eta pump+motor = 62.8 %
0 0
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 Q [m³/h]
P NPSH
[kW] [m]

25 50
P1

20 P2 40

15 30

10 20

5 10
P1 = 25.97 kW
P2 = 22.74 kW
NPSH = 9.22 m
0 0

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H SL.100.240.2., 50Hz eta
Description Value [m] [%]
Q = 209.7 m³/h
General information: H = 28.58 m
Product name: SL.100.240.2.52S.S.EX.51D.A 60 Liquid temperature during operation = 20 °C

Product No: 99965435 55

EAN number: 5715114841962
50 100
Technical:
Actual calculated flow: 209.7 m³/h 45 90

Maximum flow: 320 m³/h 40 80

Resulting head of the pump: 28.58 m
35 70
Maximum head: 55.7 m
Type of impeller: OPEN S-TUBE 30 60

Approvals: CE,EAC,RCM,ATEX 25 50
Curve tolerance: ISO9906:2012 3B
20 40
Cooling jacket (Yes/No): N
Rated speed: 2971 rpm 15 30

Materials: 10 20
Pump housing: Cast iron
5 Eta pump = 71.7 % 10
Pump housing: EN 1561 EN-GJL-250
Eta pump+motor = 62.8 %
Impeller: Cast iron 0 0
0 50 100 150 200 250 Q [m³/h]
Impeller: EN 1561 EN-GJL-250 P NPSH
Impeller: ASTM A48-35B [kW] [m]
25 P1 50
Motor: Cast iron
Motor: EN 1561 EN-GJL-250 20 40
P2
Shaft seal: SIC-SIC
Secondary shaft seal: SIC-CARBON 15 30

Installation:
10 20
Range of ambient temperature: -20 .. 40 °C
Maximum operating pressure: 8 bar 5 P1 = 25.97 kW 10
P2 = 22.74 kW
Flange standard: DIN NPSH = 9.22 m
0 0
Size of inlet connection: DN 100
148

DN100 476
285
180

19
x
8 25
1140

M16
x
8
382

191

Size of outlet connection: DN 100

Pressure rating: PN 10
191

382

Maximum installation depth: 20 m

Installation: S 8 x M16

Inst dry/wet: SUBMERGED

Installation: vertical
Auto-coupling: 96090994
Base stand: 96102255
Frame range: 52
1140

Liquid:
8 x 19
Liquid temperature range: 0 .. 40 °C 25

Selected liquid temperature: 20 °C

148

Density: 998.2 kg/m³

285 180 DN100
Electrical data: DN100 476

Power input P1: 27.4 kW

Rated power - P2: 24 kW
Mains frequency: 50 Hz Wiring diagram. 12-wire cable
Rated voltage: 3 x 380-415/660-690 V
L1 L2 L3 Delta
Voltage tolerance: +10/-10 % P1
P5 P2 U1

Max starts per. hour: 20 P4 P3 V1

W2
W1

Rated current: 51-47/30-28 A 1

L1
2
L2
3
L3
4
U2
5
V2
6
W2
V2 U2

Maximum current consumption: 49 A

Starting current: 582/320 % L1 L2 L3 Star
Y
Rated current at no load: 24.6 A
Rated speed: 2971 rpm 1 2 3 4 5 6 P1 P2 P3 P4 P5
U1 V1 W1 U2 V2 W2

Motor efficiency at full load: 88 %

Optional
Motor efficiency at 3/4 load: 86 %
Motor efficiency at 1/2 load: 84 %
Number of poles: 2

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Description Value
Method of start: Y/D
Enclosure class (IEC 34-5): IP68
Insulation class (IEC 85): H
Explosion proof: yes
Built-in motor protection: KLIXON
Length of power cable: 10 m
Cable type: S1BN8-F
Cable size: 7G6+5X1.5ST
Cable resistance: 3.30 mOhm/m
Winding resistance: 0.260 Ohm
Cos phi 1/1: 0.82
Cos phi 1/2: 0.69
Cos phi 3/4: 0.77
Controls:
Moisture sensor: with moisture sensors
Others:
Net weight: 285 kg
Gross weight: 313 kg
Shipping volume: 1.04 m³

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99965435 SL.100.240.2.52S.S.EX.51D.A 50 Hz

19
x

DN100
8

180
382
1140

476
285
M16
x
8

191
25

148
DN100

Note! All units are in [mm] unless others are stated.

Disclaimer: This simplified dimensional drawing does not show all details.

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99965435 SL.100.240.2.52S.S.EX.51D.A 50 Hz

1232
1140 92
855
947
693

0
107
502
919

0
110

60.3

220
443

4 X M16
8 X 20

240
21
DN100
413

180 110

382
220
476

230

Note! All units are in [mm] unless others are stated.

Disclaimer: This simplified dimensional drawing does not show all details.

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99965435 SL.100.240.2.52S.S.EX.51D.A 50 Hz

382
191

605

1270

130
355
105
142

177 278

455

Note! All units are in [mm] unless others are stated.

Disclaimer: This simplified dimensional drawing does not show all details.

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99965435 SL.100.240.2.52S.S.EX.51D.A 50 Hz

Wiring diagram. 12-wire cable

L1 L2 L3 Delta
P1
P5 P2 U1

P4 P3 V1

W2
W1
1 2 3 4 5 6 V2 U2

L1 L2 L3 U2 V2 W2

L1 L2 L3 Star
Y

1 2 3 4 5 6 P1 P2 P3 P4 P5
U1 V1 W1 U2 V2 W2

Optional

Note! All units are in [mm] unless others are stated.

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