GRUNDFOS DATA BOOKLET

CM1-4 S-R-I-E-AQQE C-A-A-N Grundfos Pump 98482157

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Printed from Grundfos Product Centre [2018.02.043]

Position Qty. Description1 CM1-4 S-R-I-E-AQQE

Product No.: 98482157

Compact, reliable, horizontal, multistage, end-suction centrifugal pump with axial suction port and radialdischarge port. The pump is self-priming and can create a suction lift of up to 4 m metres. Pumpmaterials in contact with the liquid are in stainless steel. The mechanical shaft seal is a specialdesigned, unbalanced O-ring seal. Pipework connection is via internal Whitworth pipe threads, Rp (ISO7/1).

The pump is fitted with a 1-phase, foot-mounted, fan-cooled asynchronous motor.

Further product detailsPump and motor are integrated in a compact and user-friendly design. The pump is fitted to a low baseplate, making it ideal for installation in systems where compactness is important.The pump can create a suction lift of 4 m metres in less than five minutes.Compared to other self-priming pumps, the CM pump offers lower noise level, higher reliability as wellas compactness and customised solutions.The pump is made of stainless-steel components (EN 1.4301 / AISI 304) and is thereforecorrosion-proof.The state-of-the-art design and materials of the shaft seal ensure high wear resistance, improvedsticking and dry-running capabilities and long operating life.Servicing the pump requires no special service tools. Service parts are in stock for quick delivery andare available as kits, single parts or bulk. Service videos are available on www.youtube.com.

PumpA combination of a stop ring and a Nord-lock® washer secures a tight and reliable fixation of theimpeller spacing pipes to the splined pump shaft. It is possible to remove and fit the hydraulic parts fromthe pump side. The inlet and outlet port are integrated in the pump sleeve. The inlet part, chambers anddischarge part are hold together by four staybolts and a retaining flange.

The pump is fitted with an unbalanced O-ring seal with a rigid torque transmission system. It has a fixedseal driver ensuring a reliable rotation of all parts. The dynamic secondary seal is an O-ring.Primary seal:

- Rotating seal ring material: Silicon carbide (SiC)- Stationary seat material: Silicon carbide (SiC)

This material pairing is used where higher corrosion resistance is required. The high hardness of thismaterial pairing offers good resistance against abrasive particles.Secondary seal material: EPDM (ethylene-propylene rubber)EPDM has excellent resistance to hot water. EPDM is not suitable for mineral oils.

The pump shaft is connected to the motor shaft through a left thread and tight fit. The shaft cannot bedismantled.

MotorThe motor is a totally enclosed, fan-cooled motor with principal dimensions to EN 50347. Electricaltolerances comply with EN 60034.

Printed from Grundfos Product Centre [2018.02.043]

The motor has built-in thermal protection (PTO current and temperature sensors) in accordance with IEC 60034-11and requires no further motor protection. The protection reacts to both slow- and quick-rising temperatures, e.g.constant overload and stalled conditions.

As the thermal protection incorporates automatic reset, the motor must be connected in a way whichensures that the automatic reset cannot cause accidents.

Technical data

Liquid:Pumped liquid: WaterLiquid temperature range: 0 .. 60 °CLiquid temperature during operation: 20 °CDensity: 998.2 kg/m³

Technical:Speed for pump data: 2900 rpmRated flow: 1.2 m³/hRated head: 29.7 mPrimary shaft seal: AQQEApprovals on nameplate: CE,WRAS,ACS,TR,EACCurve tolerance: ISO9906:2012 3BSelf-priming: 4 m

Materials:Pump housing: Stainless steel

DIN W.-Nr. 1.4301AISI 304

Impeller: Stainless steelDIN W.-Nr. 1.4301AISI 304

Rubber: EPDM

Installation:Maximum ambient temperature: 55 °CMaximum operating pressure: 10 barMax pressure at stated temp: 10 bar / 60 °CFlange standard: WHITWORTH THREAD RPPump inlet: Rp 1Pump outlet: Rp 1

Electrical data:Motor type: 71BRated power - P2: 0.5 kWMains frequency: 50 HzRated voltage: 1 x 220-240 VService factor: 1Rated current: 3,1-2,8 AStarting current: 530 %Rated speed: 2730-2740 rpmEnclosure class (IEC 34-5): IP55Insulation class (IEC 85): F

Others:Minimum efficiency index, MEI ≥: 0,68Net weight: 14 kgGross weight: 16.5 kg

Printed from Grundfos Product Centre [2018.02.043]

98482157 CM1-4 50 HzH

[m]

0

5

10

15

20

25

30

35

40

Q [m³/h]0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4

eta[%]

0

10

20

30

40

50

60

CM1-4, 1*230 V, 50Hz

P[W]

0

100

200

300

400

500

NPSH[m]

0.0

0.5

1.0

1.5

2.0

2.5

P1

P2

Printed from Grundfos Product Centre [2018.02.043]

H[m]

0

5

10

15

20

25

30

35

40

Q [m³/h]0 0.2 0.4 0.6 0.8 1.0 1.2

eta[%]

0

10

20

30

40

50

60

CM1-4, 1*230 V, 50Hz

P[W]

0

100

200

300

400

500

NPSH[m]

0.0

0.5

1.0

1.5

2.0

2.5P1

P2

165.3

141

75

125

158

Rp 3/8

10.5

143.6

96

137

204

179.5

377.8

173.8234.2

Rp 3/8

Rp 1

Rp 1

208.3

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Description ValueGeneral information:Product name: CM1-4 S-R-I-E-AQQEProduct No: 98482157EAN number: 5711495880576Technical:Speed for pump data: 2900 rpmRated flow: 1.2 m³/hRated head: 29.7 mImpellers: 4Primary shaft seal: AQQEApprovals on nameplate: CE,WRAS,ACS,TR,EACCurve tolerance: ISO9906:2012 3BPump version: SModel: ASelf-priming: 4 mMaterials:Pump housing: Stainless steel

DIN W.-Nr. 1.4301AISI 304

Impeller: Stainless steelDIN W.-Nr. 1.4301AISI 304

Material code: IRubber: EPDMCode for rubber: EInstallation:Maximum ambient temperature: 55 °CMaximum operating pressure: 10 barMax pressure at stated temp: 10 bar / 60 °CFlange standard: WHITWORTH THREAD RPConnect code: RPump inlet: Rp 1Pump outlet: Rp 1Liquid:Pumped liquid: WaterLiquid temperature range: 0 .. 60 °CLiquid temperature during operation: 20 °CDensity: 998.2 kg/m³Electrical data:Motor type: 71BRated power - P2: 0.5 kWMains frequency: 50 HzRated voltage: 1 x 220-240 VService factor: 1Rated current: 3,1-2,8 AStarting current: 530 %Rated speed: 2730-2740 rpmEnclosure class (IEC 34-5): IP55Insulation class (IEC 85): FMotor protec: TP211Others:Minimum efficiency index, MEI ≥: 0,68Net weight: 14 kgGross weight: 16.5 kg

165.3

141

75

125

158

Rp 3/8

10.5

143.6

96

137

204

179.5377.8

173.8

234.2

Rp 3/8

Rp 1Rp 1

208.3

Printed from Grundfos Product Centre [2018.02.043]

98482157 CM1-4 50 Hzcos phi

eta

0.0

0.2

0.4

0.6

0.8

P2 [kW]0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50

I[A]

0.0

1.0

2.0

3.0

4.0

CM1-4 + 71B 0.5 kW 1*230 V, 50 Hz, SF = 1

eta

cos phi

I

n[rpm]

2400

2600

2800

3000

P1[kW]

0.0

0.2

0.4

0.6

n

P1

Printed from Grundfos Product Centre [2018.02.043]

98482157 CM1-4 50 Hz

Note! All units are in [mm] unless others are stated.Disclaimer: This simplified dimensional drawing does not show all details.

165.

3

141

75

125

158

Rp

3/8

10.5

143.

6

96 137

204 17

9.5

377.

8

173.

8234.

2

Rp

3/8R

p 1

Rp

1

208.

3

Printed from Grundfos Product Centre [2018.02.043]

98482157 CM1-4 50 Hz

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

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Disclaimer: The information about the Grundfos pump in this document may be outdated.Data may be subject to alterations without further notice.Please contact us to verify the data above is still accurate/up-to-date.

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info@lenntech.comwww.lenntech.comtel. +31-15-261.09.00fax. +31-15-261.62.89