Contents
Vertical multistage centrifugal pumps
Product DataIntroductionPerformance range - LCR, LCRI, LCRNMinimum cost of ownershipApplicationsProduct rangePumpMotorTerminal box positionsAmbient temperatureViscosity ConstructionLCR 1s, 1, 2, 3, 4, 5, 10, 15 and 20LCRI, LCRN 1s, 1, 2, 3, 4, 5, 10, 15 and 20LCR 32, 45, 64 and 90LCRN 32, 45, 64 and 90Type keys Operating and inlet pressuresMaximum operating pressure and temperature rangeOperating range of the shaft sealMaximum inlet pressure
Selection and sizingSelection of pumpsMinimum inlet pressureHow to read the curve chartsGuidelines to performance curves
Pumped liquidsPumped liquids
Motor dataStandard motors for LCR, LCRI, LCRN - 50 Hz Performance curves/technical dataLCR 1sLCRI, LCRN 1sLCR 1LCRI, LCRN 1LCR 2LCRI, LCRN 2LCR 3LCRI, LCRN 3LCR 4LCRI, LCRN 4LCR 5LCRI, LCRN 5LCR 10LCRI, LCRN 10LCR 15LCRI, LCRN 15LCR 20LCRI, LCRN 20LCR 32LCRN 32LCR 45LCRN 45LCR 64LCRN 64LCR 90LCRN 90
11 22 3 5 5 5 5 5
6 6 7 7 8
9 9
10
11 1314 14
15
16
1719212325272931333537394143454749515355575961636567
AccessoriesPipework connectionCounter flanges for LCRCounter flanges for LCRN
696971
LCR, LCRI, LCRN Vertical multistage centrifugal pumps
Product data
Performance range - LCR, LCRI, LCRN
IntroductionThis data booklet deals with LCR,LCRI and LCRN pumps.
LCR, LCRI and LCRN pumps are vertical multistage centri-fugal pumps. The vertical in-line design enables the pump to be installed in a horizontal plane single system where the suction and discharge connections are in the same horizontal plane and have the same pipe sizes. This design provides a more compact pump design saving space and easy pipework.
Lubi LCR pumps come with various sizes and variousnumbers of stages to provide the flow and the pressurefor different site conditions.
LCR pumps are suitable for a wide variety of applications from pumping of potable water to the pumping of chemicals.
LCR pumps are available in various material versions according to the pumped liquid.
1
Fig. 1 LCR, LCRI and LCRN pumps
0
20
40
60
80
0.8 1 2 3 4 5 6 8 10 20 30 40 50 60 80 100 Q [m³/h]
High pressure range
Q [l/sec]
Q [l/min]
0.3 0.4 0.5 0.6 0.8 1 2 3 4 5 6 8 10 20 30
20 30 40 50 60 80 100 200 300 400 500600 800 1000
20
80
100
200
600
800
1000
30
40
60
80
100
200
300
400
50 Hz
LCR 1s
LCRI 1s
LCRN 1s
LCR 3
LCRI 3
LCRN 3
LCR 10
LCRI 10
LCRN 10
LCR 20
LCRI 20
LCRN 20
LCR 45
LCRN 45
LCR 90
LCRN 90
LCR 1
LCRI 1
LCRN 1
LCR 5
LCRI 5
LCRN 5
LCR 15
LCRI 15
LCRN 15
LCR 32
LCRN 32
LCR 64
LCRN 64
0.8 1 2 3 4 5 6 8 10 20 30 40 50 60 80 100 Q [m³/h]
Q [US.g.p.m]
LCR 2
LCRI 2
LCRN 2
LCR 4
LCRI 4
LCRN 4
400
300
4 5 6 8 10 20 30 40 50 60 30020080 100
H[m]
H[ft.]
[%]
LCR, LCRI, LCRN Vertical multistage centrifugal pumps
Product data
Applications
••
••••••••••
••••
•••••••••
••••••••••
••••••••••
Application
Water supplyFiltration and transfer at waterworksDistribution from waterworksPressure boosting in mainsPressure boosting in high-rise buildings, hotels, etc.Pressure boosting for industrial water supply
LCR, LCRI LCRN
IndustryPressure boosting in...Process-water systemsWashing and cleaning systemsVehicle washing tunnelsFire-fighting systemsLiquid transfer in...Cooling and air-conditioning systems (refrigerants)Boiler feed and condensate systemsMachine tools (cooling lubricants)Aquafarming Transfer of...Oils and alcoholsAcids and alkalis Glycol and coolants
Water treatmentUltra-filtration systemsReverse osmosis systems Softening, ionizing, demineralizing systemsDistillation systemsSeparatorsSwimming baths
IrrigationField irrigation (flooding)Sprinlkler irrigationDrip-feed irrigation
•••••
•
•••
Recommended version. Alternative version.
•••2
The initial cost of purchasing a pump is fraction of the total cost of owning and operating a pump over its entire life span.
Energy cost + Maintenance cost contribute to a 95% of the total cost of ownership and out of this 89% is energy cost. This is where Lubi LCR pump can make a difference against other pumps.
When pumps are running round the clock even a 10% increase in pump efficiency will quickly transform intosignificant saving in energy cost month after month over the entire lift span of the pump.
Minimum cost of ownership
Initial cost 5%Maintenance cost 6%Energy cost 89%
Product range
Vertical multistage centrifugal pumps
Product data
Range LCR 1s LCR 1 LCR 2 LCR 3 LCR 4 LCR 5 LCR 10 Nominal flow rate [m³/h]Temperature range [°C]Temperature range [°C] - on requestMax. Pump efficiency [%]
LCR pumpsFlow range [m³/h]Max.pressure [bar]High pressure [bar] - on requestMotor power [kW]
VersionLCR:Cast iron and Stainless steel EN 1.4301/AISI 304LCRI:Stainless steel EN 1.4301/AISI 304 LCRN:Stainless steel EN 1.4401/AISI 316
0.8-20 to +120-40 to +180
35
0.3-1.121-
0.37-1.1
•
••
•
••
••
••••
••
••••
•
••
1-20 to +120-40 to +180
48
0.7-2.42247
0.37-2.2
3-20 to +120-40 to +180
58
2-20 to +120-40 to +180
48
1.2-4.52447
0.37-3
1-3.52547
0.37-3
5-20 to +120-40 to +180
66
4-20 to +120-40 to +180
60
2.5-8.52447
0.37-5.5
2-7.92247
0.37-4
5-132247
0.37-7.5
LCR pipe connectionOval flange (BSP)Oval flange (BSP) - on request
Flange
Flange - on request
Rp 1
Rp 1¼
DN 25/DN 32
-
Rp 1
Rp 1¼
DN 25/DN 32
-
Rp 1
Rp 1¼
DN 25/DN 32
-
Rp 1¼Rp 1
DN 25/DN 32
-
Rp 1¼Rp 1
DN 25/DN 32
-
Rp 1½Rp 1¼Rp 2
DN 40
DN 50
Rp 1
Rp 1¼
DN 25/DN 32
-
DN 40
DN 50
Recommended version. Alternative version.
•••
LCRI pipe connectionFlange
Flange - on request
DN 25/DN 32
-
DN 25/DN 32
-
DN 25/DN 32
-
DN 25/DN 32
-
DN 25/DN 32
-
DN 40
DN 50
LCRN pipe connectionFlange
Flange - on request
DN 25/DN 32
-
DN 25/DN 32
-
DN 25/DN 32
-
DN 25/DN 32
-
DN 25/DN 32
-
DN 25/DN 32
-
DN 25/DN 32 -
3
LCR, LCRI, LCRN
10-20 to +120-40 to +180
70
LCR 15 LCR 20 LCR 32 LCR 45 LCR 90LCR 64
Product range
Range Nominal flow rate [m³/h]Temperature range [°C]Temperature range [°C] - on requestMax. Pump efficiency [%]
LCR pumpsFlow range [m³/h]Max.pressure [bar]High pressure [bar] - on requestMotor power [kW]
15-20 to +120-40 to +180
72
9-242347
1.1-15
•
••
••
•
•
20-20 to +120-40 to +180
72
11-292547
1.1-18.5
32-30 to +120-40 to +180
78
15-402839
1.5-30
45-30 to +120-40 to +180
79
22-582640
3-45
64-30 to +120-40 to +180
80
45-1202039
5.5-45
•
••
30-852039
4-45
••
•
•••
•
•••
•
•
Vertical multistage centrifugal pumps LCR, LCRI, LCRN
Product data
VersionLCR:Cast iron and Stainless steel EN 1.4301/AISI 304LCRI:Stainless steel EN 1.4301/AISI 304 LCRN:Stainless steel EN 1.4401/AISI 316
--
DN 80
DN 100
--
DN 100
DN 125
- -
DN 100
DN 125
Rp 2
Rp 2½
DN 50
-
DN 50
-
-
-
-
-
-
-
-
-
DN 50
-
DN 65
DN 80
DN 80
DN 100
DN 100
DN 125
DN 100
DN 125
DN 50
-
DN 50
-
Rp 2
Rp 2½
DN 50
-
--
DN 65
DN 80
LCR pipe connectionOval flange (BSP)Oval flange (BSP) - on request
Flange
Flange - on request
Recommended version. Alternative version.
•••
LCRI pipe connectionFlange
Flange - on request
LCRN pipe connectionFlange
Flange - on request
4
90-30 to +120-40 to +180
81
PumpThe LCR pumps are non-self-priming, vertical multistagecentrifugal pumps.
The pump consists of a base and a pump head. The chamber stack and the outer sleeve are secured between the pump head and the base by means of tiebolts. Thebase has suction and discharge connections on the same level (in-line).
All pumps are equipped with a maintenance-freemechanical shaft seal of the cartridge type as standard.
MotorLCR, LCRI and LCRN pumps are fitted with a totallyenclosed, fan-cooled, 2-pole motor with principal dimensions in accordance with the EN standards.
Electrical tolerances according to EN 60034.
From 0.37 to 2.2 kW Lubi offers LCR pumps fitted withsingle-phase motors (1 x 220-230/240 V).
Fig. 2 LCR pump
Electrical data
LCR, LCRI, LCRN pumps
Mounting designation
Insulation classEfficiency classEnclosure classSupply voltage(Tolerance: ±10%)
Supply frequency
Up to 4 kW: V 18From 5.5 kW: V 1FEFF 2IP 55P : 0.37-1.5 kW:23 x 220-240/380-415 V, 50 HzP : 2.2-45 kW:23 x 380-415 V, 50 Hz50 Hz
LUBI motor
Vertical multistage centrifugal pumps LCR, LCRI, LCRN
Product data
Terminal box positionsAs standard the terminal box is mounted on the suction side of the pump.
5
20 25 30 35 40 45 50 55 60 65 70 75 80
50
60
70
80
90
100
[%]PPP222
t [°C]
1000 2250 3500 4750 m
EFF 2, Lubi
ViscosityThe pumping of liquids with densities or kinematic viscosities higher than those of water will cause a consid-erable pressure drop, a drop in the hydraulic performanceand a rise in the power consumption.
In such situations the pump should be equipped with a larger motor. If in doubt, contact Lubi.
Fig. 4 Relationship between motor output (P2) and ambient temperature
Fig. 3 Terminal box positions
Ambient temperatureIf the ambient temperature exceeds 40°C or the pump is installed at an altitude exceeding 1000 m above sea level,the motor must not be fully loaded due to the risk of over-heating. Overheating may result from excessive ambient temperature or the low density and consequently low cooling effect of the air.
In such cases, it may be necessary to use a motor with ahigher rated output.
Position 6Standard
Position 9 Position 12 Position 3
Motor
Coupling
Pump head
Outer sleeve
Tiebolts
Base
Impellers
Shaft seal(cartridge type)
LCRI, LCRN 1s, 1, 2, 3, 4, 5, 10, 15 and 20
Sectional drawing
Materials : LCRI, LCRN
1
2
3 8 910
11
Nos. Materials EN/DIN AISI/ASTM
Pump head
Pump headcoverShaft
Base
Neck ringShaft seal
Base plate
Rubber parts
Cast ironEN-GJL-200Stainless steel
Stainless steel
Stainless steel
PTFECartridge type
Cast ironEN-GJL-200EPDM or FKM
EN-JL1030
1.4408
1.4401 1.4460 1.4408
EN-JL1030
ASTM 25B
CF 8M eq. to AISI 316 AISI 316 AISI 329 CF 8M eq. to AISI 316
ASTM 25B
LCRI
4 5 6 7
ImpellerChamberOuter sleeveO-ring forouter sleeve
Stainless steelStainless steelStainless steelEPDM or FKM
AISI 304 AISI 304 AISI 304
1.4301 1.4301 1.4301
LCRN
4 5 6 7
ImpellerChamberOuter sleeveO-ring forouter sleeve
Stainless steelStainless steelStainless steelEPDM or FKM
AISI 316 AISI 316 AISI 316
1.4401 1.4401 1.4401
Designation
Vertical multistage centrifugal pumps LCR, LCRI, LCRN LCR 1s, 1, 2, 3, 4, 5, 10, 15 and 20
Sectional drawing
Materials : LCR
1
3
4 5 6 7
8
910
Nos. Materials EN/DIN AISI/ASTM
Pump Head
Shaft
ImpellerChamberOuter sleeveO-ring for outer sleeveBase
Neck ringShaft sealRubber parts
Cast ironEN-GJL-200Stainless steel
Stainless steelStainless steelStainless steelEPDM or FKM
Cast ironEN-GJL-200PTFE
EPDM or FKM
EN-JL1030
1.4401
1.4301 1.4301 1.4301
EN-JL1030
ASTM 25B
AISI 316 AISI 431 AISI 304 AISI 304 AISI 304
ASTM 25B
Designation
Construction
6
1
3
45
98
10
67
1
3
24
95
8
10
67
11
LCRN 32, 45, 64 and 90
Sectional drawing
Materials : LCRN
1
2
3 4 5 6 7
8 9
1011
12
13
Pump head
Motor stool
ShaftImpellerChamberOuter sleeveO-ring for outer sleeveBase
Neck ring
Shaft sealBearing ring
Bottom bearing ringBase plate
Rubber parts
Stainless steel
Cast ironEN-GJL-200Stainless steelStainless steelStainless steelStainless steelEPDM or FKM
Stainless steel
Carbon-graphite filledPTFE
Carbon-graphite filledPTFESic/Sic
Cast ironEN-GJS-500-7EPDM or FKM
1.4408
EN-JL1030
1.4462 1.4401 1.4401 1.4401
1.4408
EN-JS1050
CF 8M eq.to AISI 316ASTM 25B
AISI 316 AISI 316 AISI 316
CF 8M eq.to AISI 316
ASTM 80-55-06
LCR, LCRI, LCRN LCR 32, 45, 64 and 90
Sectional drawing
Materials : LCR
1
2
3 4 5 6 7 8 9
101112
Pump head
Motor stool
ShaftImpellerChamberOutre sleeveO ring forouter sleeveBase
Neck ring
Shaft sealBearing ringBottombearing ringRubber parts
Cast ironEN-GJS-500-7Cast ironEN-GJL-200Stainless steelStainless steelStainless steelStainless steelEPDM or FKM
Cast ironEN-GJS-500-7Carbon-graphite filledPTFE
BronzeSic/Sic
EPDM or FKM
EN-JS1050
EN-JL1030 1.4057 1.4301 1.4301 1.4301
EN-JS1050
ASTM 80-55-06 ASTM 25B AISI 431 AISI 304 AISI 304 AISI 304
ASTM 80-55-06
Vertical multistage centrifugal pumps
Construction
7
2
3
1
5
9
4
6
11
8
12
10
7
2
1
5
9
4
6
11
8
12
7
13
3
10
Nos. Materials EN/DIN AISI/ASTMDesignation Nos. Materials EN/DIN AISI/ASTMDesignation
Codes
Example -F -A -E -H QQ EPipe connectionABFGJN
MaterialsAD
G
KX
Code for rubber partsEV
Shaft sealHQUBEV
LCR, LCRI, LCRN Type keys
Example LCR 32 (s) -4 -2 -F -G -E -HQQE Type range:LCR, LCRI, LCRN Flow rate [m³/h]All impellers with reduced diameter(applies only to LCR, LCRI, LCRN 1s)Number of impellersNumber of reduced diameterimpellers(LCR, LCRN 32, 45, 64 and 90)Code for pipe connectionCode for materialsCode for rubber partsCode for shaft seal
LCR, LCRI, LCRN
Vertical multistage centrifugal pumps
Construction
Oval flangeNPT threadDIN flangeANSI flangeJIS flangeChange diameter of ports
Basic versionCarbon-graphite filled PTFE (bearings)Wetted parts 1.4401/AISI 316All parts stainless steel,Bronze (bearings)Special version
EPDMFKM
Balanced cartridge sealSilicon carbideTungsten carbideCarbonEPDMFKM
8
Maximum operating pressure and temperature range
Vertical multistage centrifugal pumps LCR, LCRI, LCRN
Operating and inlet pressures
Oval flange DIN flange
16 bar
-
16 bar
-
16 bar
-
16 bar
-
16 bar
-
16 bar
-
16 bar
-
-
-
10 bar
-
-
-
10 bar
-
-
-
-
-
-
-
-
-
-
-
-
-20°C to +120°C
-
-20°C to +120°C
-
-20°C to +120°C
-
-20°C to +120°C
-
-20°C to +120°C
-
-20°C to +120°C
-
-20°C to +120°C
-
-
-
-20°C to +120°C
-
-
-
-20°C to +120°C
-
-
-
-
-
-
-
-
-
-
-
-
25 bar
25 bar
25 bar
25 bar
25 bar
25 bar
25 bar
25 bar
25 bar
25 bar
25 bar
25 bar
16 bar
16 bar
25 bar
25 bar
-
16 bar
25 bar
25 abr
-
16 bar
25 bar
25 bar
16 bar
30 bar
16 bar
30 bar
33 bar
16 bar
30 bar
16 bar
30 bar
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-
-20°C to +120°C
-20°C to +120°C
-20°C to +120°C
-30°C to +120°C
-30°C to +120°C
-30°C to +120°C
-30°C to +120°C
-30°C to +120°C
-30°C to +120°C
-30°C to +120°C
-30°C to +120°C
-30°C to +120°C
Max. Permissibleoperating pressure
Liquid temperature range
Max. Permissibleoperating pressure
Liquid temperature range
LCR 1s
LCRI, LCRN 1s
LCR 1
LCRI, LCRN 1
LCR 2
LCRI, LCRN 2
LCR 3
LCRI, LCRN 3
LCR 4
LCRI, LCRN 4
LCR 5
LCRI, LCRN 5
LCR 10-1 to 10-16
LCRI 10-1 to 10-16
LCR, LCRI 10-17 to 10-22
LCRN 10
LCR 15-1 to 15-7
LCR, LCRI 15-1 to 15-10
LCR, LCRI 15-12 to 15-17
LCRN 15
LCR 20-1 to 20-7
LCR, LCRI 20-1 to 20-10
LCR, LCRI 20-12 to 20-17
LCRN 20
LCR, LCRN 32-1-1 to 32-7
LCR, LCRN 32-8-2 to 32-14
LCR, LCRN 45-1-1 to 45-5
LCR, LCRN 45-6-2 to 45-11
LCR, LCRN 45-12-2 to 45-13-2
LCR, LCRN 64-1-1 to 64-5
LCR, LCRN 64-6-2 to 64-8-1
LCR, LCRN 90-1-1 to 90-4
LCR, LCRN 90-5-2 to 90-6
9
Operating range of the shaft sealThe operating range of the shaft seal depends onoperating pressure, pump type, type of shaft seal andliquid temperature. The following curves apply to cleanwater and water with anti-freeze liquids.
Fig. 5 Operating range of standard shaft seals
DescriptionShaft seal
HQQE
HQQV
O-ring(cartridge) (balanced seal), Sic/Sic, EPDMO-ring (cartridge) (balanced seal), Sic/Sic, FKM
-40°C to +120°C
-20°C to +90°C
Max. Temperature range [°C]
-60 -40 -20 0 20 40 60 80 100 120 140
0
5
10
15
20
25
p [bar]
t [°C]
30
35
HQQE
HQQE
HQQEHQQV
The values for operating and inlet pressures shown in thetable must not be considered individually but must alwaysbe compared, see the following examples:
Example 1:The following pump type has been selected:LCR 3-17 A-A
Max. Operating pressure: 16 barMax. Inlet pressure: 10 bar
Discharge pressure against a closed valve: 11.3 bar, seepage 30.
This pump is not allowed to start at an inlet pressure of 10 bar, but at an inlet pressure of 16.0 – 11.3 = 4.7 bar.
Example 2:The following pump type has been selected:LCR 15-2 A-A
Max. Operating pressure: 16 barMax. Inlet pressure: 8.0 bar
Discharge pressure against a closed valve: 2.8 bar, seepage 46.
This pump is allowed to start at an inlet pressure of 8.0 bar, as the discharge pressure against a closed valve isonly 2.8 bar, which results in an operating pressure of 8.0 + 2.8 = 10.8 bar. On the contrary, the max operatingpressure of this pump is limited to 16.0 bar, as a higheroperating pressure will require an inlet pressure of morethan 8.0 bar.
LCR, LCRI, LCRN The following table shows the maximum permissible inletpressure. However the current inlet pressure + the pressureagainst a closed valve must always be lower than the maximum permissible operating pressure.
If the maximum permissible operating pressure is exceeded,the conical bearing in the motor may be damaged and the life of the shaft seal reduced.
Maximum inlet pressure
LCR, LCRI, LCRN 1s1s-2
LCR, LCRI, LCRN 11-2
10 bar
to
1s-36
to 1-36
10 bar
LCR, LCRI, LCRN 44-34-12
LCR, LCRI, LCRN 55-25-18
LCR, LCRI, LCRN 1010-110-7
LCR, LCRI, LCRN 1515-115-4
LCR, LCRI, LCRN 2020-120-4
LCR, LCRN 3232-1-132-5-232-11
LCR, LCRN 4545-1-145-3-245-6-2
LCR, LCRN 6464-1-164-2-164-4-1
LCR, LCRN 9090-1-190-2-290-3
5-165-36
10-610-22
15-315-17
20-320-17
32-432-1032-14
45-245-545-13-2
64-2-264-4-264-8-1
90-190-3-290-6
4-104-26
toto
LCR, LCRI, LCRN 33-23-31
3-293-36
2-112-26
toto
toto
toto
toto
toto
toto
tototo
tototo
tototo
tototo
10 bar15 bar
10 bar 15 bar
8 bar
10 bar
8 bar
10 bar
4 bar
10 bar15 bar
4 bar
10 bar15 bar
4 bar
10 bar15 bar
4 bar
10 bar15 bar
8 bar
10 bar
Vertical multistage centrifugal pumps
Operating and inlet pressures
Examples of operating and inlet pressures
10
LCR, LCRI, LCRN 22-32-13
10 bar15 bar
10 bar 15 bar
Selection of pumpsSelection of pumps should be based on:
• The duty point of pump (see section A) • Dimensional data such as pressure loss as a result of height differences, friction loss in the pipework, pump efficiency etc. (see section B) • Pump materials (see section C) • Pump connections (see section D) • Shaft seal (see section E)
A. Duty point of the pump From a duty point it is possible to select a pump on thebasis of the curve charts shown in “Performance curves”from page 18.
B. Dimensional dataWhen sizing a pump, take the following factors into account:
• Required flow and pressure at the pump delivery point.• Pressure loss as a result of height differences (H ).• Friction loss in the pipe work (H ). It may be necessary to account for pressure loss in connection with long pipes, bends or valves, etc.• Best efficiency at the estimated duty point.• NPSH value. For calculation of the NPSH value see “Minimum inlet pressure - NPSH”, page 13.
0 3 6 9 12 15 18
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
320
340
360
0 5 10 15 20 25 30 35 40 45 50 55 60 65
0
200
400
600
800
1000
0 200 400 600 800 1000
0 5 10 15 20 25 30 35 40 45 50 55 60 65
0
5
10
15
20
25
30
Hm
ts.
0
2
4
6
0
20
40
60
80
100
p%
0
1
2
3
4
5
Pump Input Full Ø
Pump Eff.
Hm
ts.
0 50 100 150 200 250
NPSH
Q (l/sec)
Q (m3/h)
Q
(l/min)
Q (m3/h)
Q (US.g.p.m.)
1245.0 kW
QH 2900 rpm Full ØQH 2900 rpm 2/3 Ø
Pump Input 2/3 Ø
13-2
12-2
11
11-2
10
10-2
9
9-2
8
8-2
7
7-2
6
6-2
5
5-2
4
4-2
3
3-2
2
2-2
1
1-1
45.0 kW
45.0 kW
45.0 kW
45.0 kW
37.0 kW
37.0 kW
37.0 kW
30.0 kW
30.0 kW
30.0 kW
30.0 kW
30.0 kW
22.0
kW
22.0 kW
18.5 kW
18.5
kW
15.0 kW
15.0 kW
11.0 kW
7.50 kW
5.50 kW
4.00 kW
3.00 kW
11.0 kW
NP
SH
mts
.H
ft.
Pu
mp
in
pu
t p
er
sta
ge
kW
LCR 45
50 Hz
ISO 9906 Annex A
S
f
Fig. 6 Example of curve chart
Fig. 7 Example of LCR pump’s duty point
Pump efficiency Before determining the best efficiency point, theoperation pattern of the pump needs to be identified.
Is the pump expected to operate at the same duty point,then select a LCR pump which is operating at a dutypoint corresponding with the best efficiency of the pump.
As the pump is sized on the basis of highest possibleflow, it is important always to have the duty point to theright on the efficiency curve ( ) in order to keep efficiencyhigh when the flow drops.
Fig. 8 Best efficiency
Vertical multistage centrifugal pumps LCR, LCRI, LCRN
Selection and sizing
11
0 3 6 9 12 15 18
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
320
340
360
0 5 10 15 20 25 30 35 40 45 50 55 60 65
0
200
400
600
800
1000
0 200 400 600 800 1000
0 5 10 15 20 25 30 35 40 45 50 55 60 65
0
5
10
15
20
25
30
Hm
ts.
0
2
4
6
0
20
40
60
80
100
p%
0
1
2
3
4
5
Pump Input Full Ø
Pump Eff.H
mts
.
0 50 100 150 200 250
NPSH
Q (l/sec)
Q (m3/h)
Q
(l/min)
Q (m3/h)
Q (US.g.p.m.)
1245.0 kW
QH 2900 rpm Full ØQH 2900 rpm 2/3 Ø
Pump Input 2/3 Ø
13-2
12-2
11
11-2
10
10-2
9
9-2
8
8-2
7
7-2
6
6-2
5
5-2
4
4-2
3
3-2
2
2-2
1
1-1
45.0 kW
45.0 kW
45.0 kW
45.0 kW
37.0 kW
37.0 kW
37.0 kW
30.0 kW
30.0 kW
30.0 kW
30.0 kW
30.0 kW
22.0
kW
22.0 kW
18.5 kW
18.5
kW
15.0 kW
15.0 kW
11.0 kW
7.50 kW
5.50 kW
4.00 kW
3.00 kW
11.0 kW
NP
SH
mts
.H
ft.
Pu
mp
in
pu
t p
er
sta
ge
kW
LCR 45
50 Hz
ISO 9906 Annex A
Best effi-ciency
Dutypoint
Fig. 9 Dimensional data
NPSHHS
Required flow, required pressure
Hf
C. Pump materialThe material variant (LCR, LCRI, LCRN) should be selected based of the liquid to be pumped. The productrange covers the following three basic types.
• The LCR, LCRI pump types are suitable for clean, non-aggresive liquids such as potable water, oils etc.• The LCRN pump type is suitable for industrial liquids and acids.
D. Pump connectionsSelection of pump connection depends on the ratedpressure and pipework. To meet any requirement the LCR, LCRI and LCRN pumps offer a wide range offlexible connection such as:
• Oval flange (BSP) (for LCR 1s, 1, 2, 3, 4, 5, 10, 15, 20)• DIN flange (for LCRI, LCRN 1s, 1, 2, 3, 4, 5, 10, 15, 20 & LCR, LCRN 32, 45, 64, 90)• Oval flange (NPT) on request• Other connection on request
E. Shaft sealAs standard, the LCR range is fitted with a Lubi shaft seal (cartridge type) suitable for the most common applications.
The following key parameters must be taken into account, when selecting the shaft seal:
• Type of pumped liquid• Liquid temperature and• Maximum pressure.
Lubi offers a wide range of shaft seal variants to meetspecific demands.
Inlet pressure and operating pressure
The limit values stated on page 9 and page 10 mustnot be exceeded as regards....
• Maximum inlet pressure and• Maximum operating pressure.
Vertical multistage centrifugal pumps LCR, LCRI, LCRN
Selection and sizing
12
Fig. 11 Pump connections
Fig. 12 Shaft seal (cartridge type)
Fig. 13 Inlet and operating pressure
Fig. 10 LCR pump
A (oval)
F (DIN)
F (DIN)
Fig. 14 Minimum inlet pressure - NPSH
Note: In order to avoid cavitation never select a pump with a duty point too far to the right on the NPSH curve.
Always check, the NPSH value of the pump at the highest possible flow.
Minimum inlet pressure – NPSHCalculation of the inlet pressure “H” is recommendedwhen....
• The liquid temperature is high,• The flow is significantly higher than the rated flow,• Water is drawn from depths,• Water is drawn through long pipes,• Inlet conditions are poor.
To avoid cavitation, make sure that there is a minimumpressure on the suction side of the pump. The maximumsuction lift “H” in metres head can be calculated asfollows.
H = x 10.2 – NPSH – H – H – H
p = Barometric pressure in bar. (Barometric pressure can be set to 1 bar). In closed systems, p indicates the system pressure in bar.
NPSH = Net Positive Suction Head in metres head. (To be read from the NPSH curve at the highest flow the pump will be delivering).
H = Friction loss in suction pipe in metres head. (At the highest flow the pump will be delivering).
H = Vapour pressure in metres head. (To be read from the vapour pressure scale. “H ” depends on the liquid temperature “T ”).
H = Safety margin = minimum 0.5 metres head.
If the “H” calculated is positive, the pump can operate ata suction lift of maximum “H” metres head.
If the “H” calculated is negative, an inlet pressure ofminimum “H” metres head is required.
f
v
S
v m
b
b f v s
b
p
Vertical multistage centrifugal pumps LCR, LCRI, LCRN
Selection and sizing
HP
H
H
v
b
f
tm[°C]
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0,2
126
100
79
62
45
35
25
20
15
10
6,05,0
3,0
2,0
1,5
0,6
0,40,3
0,1
40
30
12
8,0
4,0
1,00,8
Hv[m]
NPSH
13
Vertical multistage centrifugal pumps LCR, LCRI, LCRN
Selection and sizing
The Pump Eff. Curve shows the efficiency of the pump. The pumpeff. curve is an average curve of all the pump types shown in the chart. The efficiency of pumps withreduced-diameter impellers is approx. 2% lower than the pumpeff. curve shown in the chart.
( )
Pump type, frequency andISO standard.
Numbers of stagesFirst figure: number ofstages; second figure:number of reduced-diameterimpellers.
The power curves indicatepump input power per stage.Curves are shown forcomplete (full ø) and for reduced-diameter (2/3 ø)impellers.
QH curve for each individual impeller. Curves for complete (full ø) and reduced-diameter (2/3 ø) impellers are shown.
QH curve for the individual pump.The bold curves indicate therecommended duty range for bestefficiency.
The NPSH curve is an averagecurve for all the variants shown.When sizing the pumps, add asafety margin of at least 0.5 m.
Fig. 15 How to read the curve charts
How to read the curve charts
Guidelines to performance curvesThe guidelines below apply to the curves shown on the following pages:
• Tolerances to ISO 9906, Annex A, if indicated.• The motors used for the measurements are standard motors.• Measurements have been made with airless water at a temperature of 20° C.• The curves apply to a kinematic viscosity of í = 1 mm²/s (1 cSt).• Due to the risk of overheating, the pumps should not be used at a flow below the minimum flow rate.• The QH curves apply to a rated motor speed of 2900 min ¹. All curves are based on current motor speeds.-
The curve below shows the minimum flow rate as apercentage of the nominal flow rate in relation to theliquid temperature.
Qmin[%]
40 60 80 100 120 140 160 180 190
0
10
20
30
40
t [°C]
LCR
Fig. 16 Minimum flow rate
14
0 3 6 9 12 15 18
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
320
340
360
0 5 10 15 20 25 30 35 40 45 50 55 60 65
0
200
400
600
800
1000
0 200 400 600 800 1000
0 5 10 15 20 25 30 35 40 45 50 55 60 65
0
5
10
15
20
25
30
Hm
ts.
0
2
4
6
0
20
40
60
80
100
p%
0
1
2
3
4
5
Pump Input Full Ø
Pump Eff.
Hm
ts.
0 50 100 150 200 250
NPSH
Q (l/sec)
Q (m3/h)
Q
(l/min)
Q (m3/h)
Q (US.g.p.m.)
1245.0 kW
QH 2900 rpm Full ØQH 2900 rpm 2/3 Ø
Pump Input 2/3 Ø
13-2
12-2
11
11-2
10
10-2
9
9-2
8
8-2
7
7-2
6
6-2
5
5-2
4
4-2
3
3-2
2
2-2
1
1-1
45.0 kW
45.0 kW
45.0 kW
45.0 kW
37.0 kW
37.0 kW
37.0 kW
30.0 kW
30.0 kW
30.0 kW
30.0 kW
30.0 kW
22.0
kW
22.0 kW
18.5 kW
18.5
kW
15.0 kW
15.0 kW
11.0 kW
7.50 kW
5.50 kW
4.00 kW
3.00 kW
11.0 kW
NP
SH
mts
.H
ft.
Pu
mp
in
pu
t p
er
sta
ge
kW
LCR 45
50 Hz
ISO 9906 Annex A
Pumped liquidsThin non-explosive liquids and not containing solid particles or fibers are suitable. The liquid must also not chemically attack the pump materials.
When pumping liquids with a density and/or viscosity higher than that of water, oversized motors must be used,if required.
Whether a pump is suitable for a particular liquid depends on a number of factors of which the most important are the chloride content, pH value, temperature and content of chemicals, oils etc.
Please note that aggressive liquids (e.g sea water and some acids) may attack or dissolve the protective oxidefilm of the stainless steel and thus cause corrosion.
The LCR, LCRI, LCRN pump types are suitable for thefollowing liquids.
LCR, LCRI• Non-corrosive liquids.• For liquid transfer, circulation and pressure boosting of cold or hot clean water.
LCRN• Industrial liquids.In systems where all parts in contact with the liquid must be made of high-grade stainless steel.
Vertical multistage centrifugal pumps LCR, LCRI, LCRN
Pumped liquids
15
Standard motor for LCR, LCRI, LCRN 50 Hz
Motor kW
Motor H.P
l [A]1/1 Cos Ø1/1 l startStandard voltage
[V]Phase [%]
0.50
0.75
1.00
1.50
2.00
3.00
0.50
0.75
1.00
1.50
2.00
3.00
4.00
5.50
7.50
10.0
15.0
20.0
25.0
30.0
40.0
50.0
60.0
1
1
1
1
1
1
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
220-240*
220-240*
220-240*
220-240*
220-240*
220-240*
220-240Ä/(380-415Y*)
220-240Ä/(380-415Y*)
220-240Ä/(380-415Y*)
220-240Ä/(380-415Y*)
220-240Ä/(380-415Y*)
220-240Ä/(380-415Y*)
220-240Ä/(380-415Y*)
380-415Ä*
380-415Ä*
380-415Ä*
380-415Ä*
380-415Ä*
380-415Ä*
380-415Ä*
380-415Ä*
380-415Ä*
380-415Ä*
2.6/2.4
4.6/4.5
5.1/4.8
6.85/6.7
9.1/8.3
12.5/11.7
1.46/0.85
2.2/1.5
2.6/1.6
3.9/2.3
5.1/3.0
7.6/4.5
9.9/5.8
8.6/8.1
11.2/10.6
14.8/14.5
20.8/19.0
28.5/26
35/32
44/40
54.5/50
67/61
78/71
62.0
64.0
68.0
73.0
76.0
80.0
70.0
70.0
77.0
76.2
78.5
81.0
83.0
84.0
85.7
87.0
90.5
91.0
92.0
92.0
93.0
93.0
93.5
13/12
23/22
28/26
36.5/35
46/42
63/59
7.3/4.3
11/7.5
15.6/9.6
23.4/13.8
30.6/18
45.6/27
59.4/34.8
51.6/48.6
67.2/63.6
96.2/94.3
135.2/123.5
185.3/169
245/224
308/280
381/350
469/427
546/497
0.98
0.98
0.97
0.97
0.98
0.98
0.87
0.91
0.90
0.90
0.91
0.89
0.88
0.82
0.91
0.82
0.89
0.88
0.88
0.83
0.90
0.90
0.94
Vertical multistage centrifugal pumps LCR, LCRI, LCRN
Motor Data
16
Framesize
71
71
80
80
90
90
71
71
80
80
90
90
100
112
132
132
160
160
160
180
200
200
225
0.37
0.55
0.75
1.10
1.50
2.20
0.37
0.55
0.75
1.10
1.50
2.20
3.00
4.00
5.50
7.50
11.0
15.0
18.5
22.0
30.0
37.0
45.0
Type
MCR50052S
MCR50072S
MCR50102S
MCR50152S
MCR50202S
MCR50302S
MCR50052T
MCR50072T
MCR50102T
MCR50152T
MCR50202T
MCR50302T
MCR50402T
MCR50552T
MCR50752T
MCR51002T
MCR51502T
MCR52002T
MCR52502T
MCR53002T
MCR54002T
MCR55002T
MCR56002T
- ( ) Standard voltage*- Special voltages available on request.