SE, SL, 9-30 kW
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
English (GB) Installation and operating instructions
Caution
Note
English (GB)
Original installation and operating instructions.
CONTENTS
1. General warning
2. Symbols used in this document
3. General description
3.1 Applications
3.2 Operating conditions
3.3 Sound pressure level
3.4 Motor liquid
4. Delivery and handling
4.1 Transportation and storage
4.2 Lifting points
5. Identification
5.1 Nameplate
5.2 Type key
6. Safety
6.1 Potentially explosive environments
7. Approvals
7.1 Explanation of Ex approval
8. Installation
8.1 Installation types
8.2 Permanent, vertical, submerged installation in a pit
8.3 Permanent, vertical/horizontal, dry installation in a
pump room
8.4 Temporary, vertical, submerged installation in a pit
8.5 Pump controllers
9. Electrical connection
9.1 Sensors
9.2 Thermal switches
9.3 Moisture and leakage switches
9.4 Thermistors
9.5 Frequency converter operation
9.6 Cable data
10. Startup
11. Maintenance and service
11.1 Checking and changing the motor liquid
11.2 Inspection and adjustment of impeller clearance
11.3 Explosion-proof SE, SL pumps, 9-30 kW
11.4 Contaminated pumps
12. Fault finding
13. Sensor overview
14. Disposal
1. General warning
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
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2. Symbols used in this document
Warnin g
2
2
2
2
3
4
4
4
4
5
5
5
6
7
7
8
8
9
9
If these safety instructions are not observed,
it may result in personal injury.
Warnin g
If these instructions are not observed, it may lead
to electric shock with consequent risk of serious
personal injury or death.
Warnin g
The surface of the product may be so hot that
it may cause burns or personal injury.
Warnin g
These instructions must be observed for
explosion-proof pumps. We advise you to also
follow these instructions for standard pumps.
Warnin g
The sound pressure level is so high that hearing
protection must be used.
If these safety instructions are not observed,
it may result in malfunction or damage to the
equipment.
Notes or instructions that make the job easier
and ensure safe operation.
3. General description
This booklet includes instructions for installation, operation and
maintenance of submerged and dry-installed Grundfos sewage
and wastewater SE, SL pumps, fitted with motors of 9 to 30 kW.
The booklet also includes specific instructions for the
explosion-proof pumps. See section 6.1 Potentially explosive
environments.
3.1 Applications
SE, SL pumps, 9-30 kW, are designed primarily for pumping the
following liquids:
• raw sewage with short and long fibres as well as particles in
municipal and industrial wastewater systems
• sludge with dry-solids content of up to 3 % for pumps with
S-tube impellers and up to 5 % for pumps with SuperVortex
impellers.
• surface water
• industrial wastewater with fibrous material
• domestic wastewater with toilet waste
• unscreened sewage in municipal pumping stations or inlet
pumping stations to the wastewater treatment plant.
Secondarily, the pumps can also be used for pumping raw water.
Depending on the application, the pumps can be used in
submerged or dry, horizontal or vertical installations.
Maximum solids size is 75-160 mm, depending on pressure
range.
2
3.1.1 Potentially explosive environments
Note
Note
Use the explosion-proof SE, SL pumps, 9-30 kW, in potentially
explosive environments. See section 6.1.1 Ex certification and
classification.
The explosion classification of the pump is II 2 G
Ex bcd II B T4 Gb (ATEX) or Ex d II B T4 Gb
(IECEX). If the pump is used with a frequency
converter, the temperature class is T3.
The installation must be approved by the local
authorities in each individual case.
3.2 Operating conditions
pH value
Pumps in permanent installations can cope with the following pH
values:
Material variant Installation pH value
Standard
1)
Cast iron impeller, pump housing and motor top.
2)
Stainless steel impeller. Cast iron pump housing and motor
1)
2)
Q
3)
S
4)
R
5)
D
Dry and submerged 6-14
Dry and submerged 6-14
Submerged 5.5 - 14
Dry 1-14
Dry and submerged 1-14
Dry and submerged 0-14
top.
3)
Stainless steel impeller and pump housing. Cast iron motor
top. Material variant S is available on request.
4)
Entire pump of stainless steel.
5)
Stainless steel pump according to EN 1.4517/1.4539. Material
variant D is available on request.
6)
For fluctuating pH values, the range is pH 4 to 14.
Liquid temperature
0-40 °C.
For short periods (maximum 3 minutes), a temperature of up to
60 °C is permissible (non-Ex versions only).
Warning
Explosion-proof pumps must never pump liquids
of a temperature higher than 40 °C.
Ambient temperature
Warning
For explosion-proof pumps, the ambient
temperature on the installation site must be in
the range 0-40 °C.
For non-explosion proof pumps, the ambient temperature may
exceed 40 °C for a short period (maximum 3 minutes).
Density and viscosity of pumped liquid
When pumping liquids with a density and/or a kinematic viscosity
higher than that of water, use motors with correspondingly higher
outputs.
6)
6)
6)
Flow velocity
We advise you to keep a minimum flow velocity to avoid
sedimentation in the piping system. Recommended flow
velocities:
• in vertical pipes: 0.7 m/s
• in horizontal pipes: 1.0 m/s.
Installation depth
Maximum 20 m below liquid level.
Maximum solids size
From 75 to 160 mm, depending on pump size.
3.2.1 Operating mode
The pumps are designed for continuous operation or for
intermittent operation. Maximum number of starts per hour is 20.
3.2.2 Enclosure class
IP68.
3.2.3 Level of pumped liquid
Warning
Do not let the pump run dry.
Install an additional level switch to ensure that
the pump is stopped in case the stop level switch
is not working.
The level of pumped liquid must be controlled by
level switches connected to the motor control
circuit. The minimum level depends on the
installation type and is specified in these
installation and operating instructions.
For a short period of time the pump may be used
to pump down the water level to remove the float
layer. For explosion-proof pumps, do not go
below the stop levels shown in fig. 1.
Installation
type
Description
Installation and
accessories
Permanent
Sewage pump without
S
cooling jacket for
submerged installation.
installation on auto
coupling
Temporary
installation on ring
stand.
Permanent
C
jacket for submerged
installation.
Sewage pump with cooling
installation on auto
coupling.
Temporary
installation on ring
stand.
Sewage pump with cooling
D
jacket for dry, vertical
installation.
Sewage pump with cooling
H
jacket for dry, horizontal
installation.
Base-stand
installation.
Base-plate
installation.
Base stand for
horizontal
installation.
English (GB)
Warning
The pump must not be used to pump explosive,
flammable or combustible liquids.
3
To ensure adequate cooling of the motor during operation, the
Liquid levels for installation
types S and C:
S1 operation and Ex
pumps, installation
type S
Installation type C
Caution
English (GB)
following minimum requirements must be met:
• Installation type S
For S1 operation (continuous operation), the pump must
always be covered by the pumped liquid to the top of the
motor.
Warnin g
SE, SL pumps without cooling jacket, installation
type S, must always be fully submerged in the
pumped liquid to be Ex protected.
• Installation type C
The pump housing must always be covered by the pumped
liquid.
Fig. 1 Liquid level
• Installation types D and H
No special requirements.
3.3 Sound pressure level
Warnin g
Depending on the installation type, the sound
pressure level of the pump can be higher than 70
dB(A).
Use hearing protection when working nearby
such an installation in operation.
3.4 Motor liquid
The motor is factory-filled with Grundfos motor liquid SML3 which
is frost-proof down to -20 °C. The motor liquid helps to transfer
the heat generated by the motor to the cooling chamber and on to
the pumped liquid passing on the outside of the pump.
4. Delivery and handling
The pump is supplied from the factory in proper packing in which
it should remain until it is to be installed. Make sure that the pump
cannot roll or fall over.
4.1 Transportation and storage
All lifting equipment must be rated for the purpose and checked
for damage before any attempt to lift the pump. The lifting
equipment rating must under no circumstances be exceeded. The
pump weight is stated on the pump nameplate.
Warnin g
Pumps with suction flange DN 100 or DN 150
(pressure ranges S and H) in upright position do
not fulfil the stability requirement of standard EN
809 (stable when tilted to an angle of 10 degrees).
Use a service stand to support the pump.
Product number for service stand:
Suction flange size DN 100: 98669229.
Suction flange size DN 150: 98669251.
Warning
Always lift the pump by its lifting bracket or by
means of a fork-lift truck, never by means of the
motor cable or the hose/pipe.
Do not remove the insulation from the free end of
the power supply cable until the electrical
connection is to be made. Whether insulated or
not, the free cable end must never be exposed to
moisture or water. Non-compliance with this may
TM05 2535 0212
For long periods of storage, the pump must be protected against
moisture and heat.
Transportation and storage temperature: -20 - +60 °C.
After a long period of storage, the pump should be inspected
before it is put into operation. Make sure that the impeller can
rotate freely. Pay special attention to the condition of the shaft
seals and the cable entry.
cause damage to the motor.
Warning
If the pump is stored for more than one year or it
will be a long time before it is put into operation
after the installation, the impeller must be turned
at least once a month.
4
Note
Front
Middle
CE0344
II2G
Ta = -20°C to +40°C
FM14ATEX0002X
Ex bcd llB T4. T3 Gb
Type: SL1.110.200.245.4.
52M.S.EX.61G
Model: 9817500500000001
P.c. 1140
IP68 20 m
Hmax:
Motor:
P1:
Qmax:
Tmax.:
42
n:
kg
3
min
380-480
660-690 30-29
kW
V
A
60
m
27
565 m h/
3
40 c
kW
P2: 24.5
1777
-1
&RVij
0.80
V
A52-41
Hz Insul.class: H
Weight: 334
Made in Tatabanya. Hungary
~
98838806
4
8
12
13
15
11
10
14
20
18
22
16
17
19
25
27
24
9
1
5
2
3
6
7
26
21
23
4.2 Lifting points
4.2.1 Installation types S, C and D
When lifting the pump, use the right lifting point to keep the pump
balanced. SE, SL pumps installation types S, C and D are
equipped with two lifting points which ensure that the pump can
be lifted in a safe manner. See fig. 2 and table below to find the
correct lifting point.
Fig. 2 Lifting points, installation types S, C and D
Discharge flange size Lifting point
DN 80 Middle
DN 100 Middle
DN 150 Middle
DN 200 Front
DN 250 Front
DN 300 Front
4.2.2 Installation type H
Installation type H can be lifted by a hole in the flange and the
front lifting point. See fig. 3.
Fig. 3 Lifting points, installation type H
Always handle the pump by means of the correct
lifting points.
5. Identification
5.1 Nameplate
All pumps can be identified by means of the nameplate on the
motor top cover. See fig. 4.
Fig. 4 Pump nameplate
Pos. Description
1 Approvals
TM05 2684 0312
TM05 3449 1312
2 EU explosion-proof motor Ex-symbol
3 Explosion protection certificate No.
4 Ex description
5 Ambient temperature
6 Pump type designation
7 Pump type designation (line 2)
8 Model number
9 Production code, year/week
10 Enclosure class
11 Maximum installation depth
12 Maximum head
13 Maximum flow rate
14 Number of phases
15 Maximum liquid temperature
16 Rated power input P1
17 Rated power output P2
18 Rated speed
19 Cos φ, 1/1-load
20 Rated voltage I
21 Rated current I
22 Rated voltage II
23 Rated current II
24 Frequency
25 Insulation class
26 Approval
27 Weight
English (GB)
TM05 2533 1715
5
5.2 Type key
English (GB)
Code Example SL 1 .110 .200 .245 .4 .52 M .S .EX .6 1G
SE
SL
1
2
V
[ ]
A
B
2
4
6
S
H
M
L
E
Pump type:
Sewage pump with cooling jacket
Sewage pump without cooling jacket
Impeller type:
S-tube impeller
Dual S-tube impeller
SuperVortex (free-flow) impeller
Pump free passage:
Maximum solids size [mm]
Pump discharge:
Nominal diameter of pump discharge port [mm]
Output power, P2:
P2 (100 W)
Sensor version:
Standard pump / standard Ex pump
Sensor version 1 / sensor version 1, Ex pump
Sensor version 2 / sensor version 2, Ex pump
Number of poles:
2-pole motor
4-pole motor
6-pole motor
Frame size:
Frame size of pump
Pressure range:
Super-high pressure
High pressure
Medium pressure
Low pressure
Extra-low pressure
Installation:
Submersible installation - without cooling jacket
S
Submersible installation - with cooling jacket
C
Dry installation, vertical
D
Dry installation, horizontal.
H
Material code for impeller, pump and motor housing:
Cast iron pump housing; cast iron impeller; cast iron motor housing
[ ]
Cast iron pump housing; 1.4408 impeller; cast iron motor housing
Q
1.4408 pump housing; 1.4408 impeller; cast iron motor housing
S
1.4408 pump housing; 1.4408 impeller; 1.4408 motor housing
R
1.4517 pump housing; duplex steel impeller; 1.4539 motor housing
D
Pump version:
Pump without Atex approval
N
Pump with Atex approval
Ex
Frequency:
5 = 50 Hz
5
6 = 60 Hz
6
Voltage:
Standard version:
1D
1E
1N
1F
1G
Standard version:
1M
1P
Thermal protection:
Thermal switches
[ ]
Thermistor
PTC
Z Custom-built products
50 Hz
380-415D
220-240D
500-550D
60 Hz
220-227D
380-480D
500-600D
208-230D
660-690Y
380-450Y
380-480Y
660-690Y
440-480Y
6
6. Safety
Warnin g
Pump installation in pits must be carried out by
specially trained persons.
Warnin g
Persons must not enter the installation area when
the atmosphere is explosive.
Warnin g
Do not open the pump if the ambient atmosphere
is explosive or dusty.
Warnin g
It must be possible to lock the mains switch in
position 0. Type and requirements as specified in
EN 60204-1, 5.3.2.
For safety reasons, all work in pits must be supervised by a
person outside the pit.
Pits for submersible sewage and wastewater pumps contain
sewage and wastewater with toxic and/or disease-causing
substances. Therefore, all persons involved must wear
appropriate personal protective equipment and clothing, and all
work on and near the pump must be carried out under strict
observance of the hygiene regulations in force.
Warnin g
Make sure that the lifting bracket is tightened
before attempting to lift the pump. Tighten if
necessary. Carelessness during lifting or
transportation may cause injury to personnel or
damage to the pump.
Warnin g
For some installation types, the surface
temperature may be up to 90 °C.
6.1 Potentially explosive environments
Use explosion-proof pumps for applications in potentially
explosive environments. See section 7.1 E xplanation of Ex
approval.
Warnin g
The pump must not be used to pump explosive,
flammable or combustible liquids.
Warnin g
The classification of the installation site must be
approved by the local fire-fighting authorities in
each individual case.
Special conditions for safe use of SE, SL pumps,
9-30 kW Ex:
1. Make sure the moisture switches and thermal
switches are connected in two separate circuits
and have separate alarm outputs (motor stop) in
case of high humidity or high temperature in the
motor.
2. Screws used for replacement must be class
A4-80 or A2-80 according to EN/ISO 3506-1.
3. Consult the motor manufacturer if you require
dimensional information on the flame path gaps.
Note: In case of repairs always use original
service parts from the manufacturer as this will
ensure correct dimensions of flame path gaps.
4. During operation the cooling jacket, when fitted,
must be filled with cooling liquid.
5. The level of pumped liquid must be controlled by
level switches connected to the motor control
circuit. The minimum level depends on the
installation type and is specified in these
installation and operating instructions.
6. Dry running is not allowed.
7. Make sure the permanently attached cable is
suitably mechanically protected and terminated in
a suitable terminal board.
8. Do not expose ethylene propylene rubber
insulated cables to direct sun light for extended
periods of time.
9. Due to possible electrostatic discharge, do not
handle ethylene propylene rubber insulated
cables when the atmosphere is explosive.
10.When the motor is installed with a converter, the
temperature code of the installation will be T3.
When the motor is installed without a converter,
the temperature code of the installation will be
T4.
6.1.1 Ex certification and classification
Direct drive, 50 or 60 Hz: CE 0344 II 2 G Ex bcd IIB T4 Gb.
Frequency converter drive: CE 0344 II 2 G Ex bcd IIB T3 Gb.
Explosion-proof pumps have been approved by FM Approvals in
conformity with the essential health and safety requirements
relating to the design and construction of equipment intended for
use in potentially explosive atmospheres given in Annex II to the
Council Directive 94/9/EC (ATEX).
English (GB)
7
7. Approvals
English (GB)
The explosion-proof versions have been approved by FM Approvals according to ATEX directive and IEC standards.
7.1 Explanation of Ex approval
The SE, SL 9-30 kW pumps have the following explosion protection classification:
CE 0344 II2 G Ex b c d IIB T4, T3 Gb IP68
Directive/standard Code Description
CE marking of conformity according to the ATEX directive 94/9/EC, Annex X.
0344 is the number of the notified body which has certified the quality system for ATEX
= Marking of explosion protection
Equipment group according to the ATEX directive, Annex II, point 2.2, defining the requirements
applicable to the equipment in this group
Equipment category according to the ATEX directive, Annex II, point 2.2, defining the requirements
applicable to the equipment in this category
T3 = maximum surface temperature of the motor is 200 °C according to EN 60079-0:2012
T4 = maximum surface temperature of the motor is 135 °C according to EN 60079-0:2012
The letter X in the certificate number indicates that the equipment is subject to special conditions for
safe use. The conditions are mentioned in the certificate and the installation and operating
instructions.
ATE X
Harmonized
European standard
EN 60079-0 and EN
60079-1
CE 0344 =
II =
2=
G = Explosive atmospheres caused by gases, vapours or mists
Ex = The equipment conforms to harmonized European standard
b = Control of ignition source according to EN 13463-6:2005 and EN 13463-1:2009
c = Constructional safety according to EN 13463-5:2011 and EN 13463-1:2009
d = Flame-proof enclosure according to EN 60079-1:2007
II = Suitable for use in explosive atmospheres (not mines)
B = Classification of gases, see EN 60079-0:2006, Annex A. Gas group B includes gas group A.
T4/T3 =
IP68 = Enclosure class according to IEC 60529
X=
.
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