lcr50hz technical data - lubi pumps · ppp22 t [°c] 1000 2250 3500 4750 m eff 2, lubi viscosity...

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


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


•••

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


•••

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


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



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


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


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


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


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


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, 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


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


Operating and inlet pressures

Examples of operating and inlet pressures

10


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


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


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.



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



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



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


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.


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


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.

lcr50hz technical data - lubi pumps · ppp22 t [°c] 1000 2250 3500 4750 m eff 2, lubi viscosity...

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