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GRUNDFOS DATA BOOKLET

CH, CHN

Horizontal multistage end-suction pumps50/60 Hz

2

Contents

General descriptionIntroduction 3Applications 3Pumped liquids 3Operating conditions 3Performance range 4

IdentificationType key 5

ConstructionPump 6Motor 6CH, CHN 2-50 7CH, CHN 4-60 8CH 8-50 9CH 12-50 10Material specification 11

Curve chartsCurve conditions 12How to read the curve charts 13

Performance curves/technical dataCH, CHN 50 Hz 14CH, CHN 2 14CH, CHN 4 16CH 8 18CH 12 20CH, CHN 60 Hz 22CH, CHN 2 22CH, CHN 4 26CH 8 30CH 12 32

Pumped liquidsPumped liquids 34List of pumped liquids 34

VariantsLists of variants 36Motors 36Shaft seals 36Connections and other variants 36Certificates and nameplates 36Pumps 36

Further product documentationWebCAPS 37WinCAPS 38

CH, CHNGeneral description

IntroductionThe Grundfos CH and CHN pumps are non-self-priming, horizontal, multistage centrifugal pumps.

Pump and motor are integrated in a compact and user-friendly design fittet to a base plate making the pumps suitable for installation in compact systems.

CH and CHN pumps have many incorporated advan-tages such as those mentioned below.

Worldwide usage • Different certificates and approvals like UL/CSA for

America and Canada.• Different voltage and frequency combinations.• State-of-the-art shaft seal materials (silicon carbide

SiC-G) offering these benefits:- high wear resistance and long operating times- reduced risk of sticking if the liquid contains glycol- improved dry-running properties due to the graphite content of the SiC.

Electro-coated cast iron parts• High corrosion resistance.• Better efficiency because of smooth surfaces.

Customized solutionsSee “List of Variants” on page 36.

• Motor adaptation. • Pump body modifications.

MaterialsCH: Chambers and all moving parts in contact with the pumped liquid are made of stainless steel. Discharge chamber, suction chamber and base plate are painted non-gloss black.

CHN: Discharge chamber, suction chamber, base plate and all parts in contact with the pumped liquid are made of stainless steel.

The pump is CE-marked.

ApplicationsThe CH and CHN pumps are designed for small domestic and industrial systems.

Applications• Liquid transfer and circulation of liquids within light

industry and farming• Pressure boosting in single-pump and multi-pump

booster systems• Domestic water supply• Cooling systems• Air-conditioning systems.

Pumped liquidsCHThin, clean, non-aggressive and non-explosive liquids without solid particles or fibres.

CHNThin, clean, slightly aggressive and non-explosive liquids without solid particles or fibres.

Operating conditions

*Lower temperatures are possible. See Lists of variants on page 36.

The maximum operating pressure depends on the temperature of the pumped liquid. See the table.

TM03

593

9 44

02

Liquid temperature range: *0 °C to +90 °C. Max. ambient temperature: +55 °C.

Max. operating pressure 1 MPa (10 bar) 0.6 MPa (6 bar)CH 2, CHN 2CH 4, CHN 4 0 °C to +40 °C +41 °C to +90 °C

CH 8CH 12 0 °C to +55 °C +56 °C to +90 °C

Min. inlet pressure: According to the NPSH curve plus a safety margin of 0.5 m.

Max. inlet pressure: Limited by the max. operating pressure.

3

4

General description CH, CHN

Performance rangeCH, CHN, 50 Hz

CH, CHN, 60 Hz

TM02

123

9 39

02

1 2 3 4 5 6 7 8 9 10 11 12 13 Q [m³/h]

0

5

10

15

20

25

30

35

40

45

50

55

H[m]

0

100

200

300

400

500

p[kPa]

CH, CHN50 Hz

ISO 9906 Annex A

CH 12CH 8CH 4CH 2CHN 2 CHN 4

TM02

124

0 39

02

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Q [m³/h]

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

H[m]

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Q [l/s]

0

100

200

300

400

500

600

700

800

p[kPa]

CH, CHN60 Hz

ISO 9906 Annex A

CH 2 CH 4 CH 8 CH 12

CHN 2 CHN 4

5

Type keyIdentification

Type key

Codes for physical dimensions

Codes for materials

Example CH(N) 4 -30 A W -A -CVBE

Type range

Rated flow rate [m³/h]

Max. discharge pressure [m]

Code for pump version

Code for physical dimensions

Code for materials, excluding plastic and rubber parts

Code for shaft seal

B: NPT pipe connectionN: Different connection diametersW: Whitworth thread, Rp ISO 7/1O: Outside thread.

A: Basic versionI: Stainless materialsX: Special version.

6

CH, CHNConstruction

PumpThe CH, CHN pumps are non-self-priming, horizontal, multistage centrifugal pumps with mechanical shaft seal and through-going pump-motor shaft. The pumps have axial suction port and radial discharge port and are mounted on a base plate. All movable parts in contact with the pumped liquid are made of stainless steel.

EPDM or FKM O-rings are available as standard. See pipe connections in the table.

MotorThe pump is fitted with a TEFC (totally enclosed, fan-cooled), squirrel-cage Grundfos motor.

The single-phase motors are supplied with a built-in thermal relay to IEC 34-11, TP 211 (slow overload as well as locked rotor). The motors require no further motor protection.

The three-phase motors do not incorporate thermal protection and therefore require external motor protection in accordance with local regulations.

The sound pressure level of the pump is lower than the limiting values stated in the EC Council Directive 98/37/EC relating to machinery.

Frequency converter operationMost three-phase motors can be operated with a frequency converter. See Lists of variants on page 36.

Connections CH 2, CHN 2

CH 4, CHN 4 CH 8 CH 12

Axial suction port Rp 1 Rp 1Rp 1 1/4 Rp 1 1/2 Rp 1 1/2

Radial discharge port Rp 1 Rp 1 Rp 1 1/4 Rp 1 1/2Drain hole, priming hole Rp 3/8 Rp 3/8 Rp 1/2 Rp 1/2

Rated speed: 50 Hz, 2900 min-1

60 Hz, 3400 min-1

Enclosure class: IP 54Insulation class: FStandard voltages: 1 x 220-240 V, 50 Hz

3 x 220-240/380-415 V, 50 Hz1 x 115/230 V, 60 Hz3 x 208-230/440-480 V, 60 Hz3 x 575 V, 60 Hz

Voltage tolerance: +6 %/–10 %Sound-pressure level: ≤ 70 dB (A)

Construction CH, CHN

CH, CHN 2-50Sectional drawing

Fig. 1 CH, CHN 2-50 with MG 71 motor

Components

TM03

203

9 35

0465 45

4

28g5628

6237

1551532

172

154

158

151

159

156

105 64 49

164

164a

79

66 67

25

65

45

25

6

150a

Pos. Component Pos. Component Pos. Component2 Discharge chamber 56 Base plate 151 Fan cover4 Chamber 62 Stop ring 153,154 Ball bearing6 Suction chamber 64 Spacing pipe 155 Bearing cover plate

25 Plug 65 Retainer for neck ring 156 Fan28 Screw 66 Clamp 158 Corrugated spring

28g Hexagon head screw 67 Lock nut 159 O-ring37 Gasket 79 Diverting disc 164 Terminal box cover45 Neck ring 105 Shaft seal 164a Terminal box49 Impeller 150a Stator housing 172 Shaft

7

8


CH, CHN 4-60Sectional drawing

Fig. 2 CH, CHN 4-60 with MG 80 motor

Components

TM00

660

9 49

00

4

28g5628

3762 66 67

1551532

172

154

158

151

159

156

105 64 49

25

164

164a

47a4a

64a79

25

6

150a

Pos. Component Pos. Component Pos. Component2 Discharge chamber 56 Base plate 153,154 Ball bearing4 Chamber 62 Stop ring 155 Bearing cover plate

4a Chamber with bearing 64 Spacing pipe 156 Fan6 Suction chamber 64a Spacing pipe 158 Corrugated spring

25 Plug 66 Clamp 159 O-ring28 Screw 67 Lock nut 164 Terminal box cover

28g Hexagon head screw 79 Diverting disc 164a Terminal box37 Gasket 105 Shaft seal 172 Shaft

47a Bearing 150a Stator housing49 Impeller 151 Fan cover


CH 8-50Sectional drawing

Fig. 3 CH 8-50 with MG 80 motor

Components

TM03

203

6 35

05

37a172a154

151

156

150a157158 164 164a

79

105 49 49a 37

153 155 192 26 64 6645193 65

4

19141a 67

25

65

45

25

6

1a41

2

Pos. Component Pos. Component Pos. Component1a Pump housing 45 Neck ring 151 Fan cover4 Chamber 49 Impeller 153,154 Ball bearing6 Suction chamber 49a Impeller 155 Bearing cover plate

25 Plug 56 Base plate 156 Fan26 Staybolt 64 Spacing pipe 158 Corrugated spring28 Screw 65 Retainer for neck ring 159 O-ring

28g Hexagon head screw 66 Clamp 164 Terminal box cover28h Serrated lock washer 67 Lock nut 164a Terminal box37 Gasket 79 Diverting disc 172 Shaft

37a Gasket 105 Shaft seal41 Bearing plate 150a Stator housing

9

10


CH 12-50Sectional drawing

Fig. 4 CH 12-50 with MG 90 motor

Components

TM03

203

7 35

05

37a172a157

151

154159a156 164 153 105 49 49a 37

155 192 45193 65

4

156a158

79 191181 150a 41a 26 64 66 67

25

65

45

25

6

1a41

2

Pos. Component Pos. Component Pos. Component1a Pump housing 45 Neck ring 151 Fan cover4 Chamber 49 Impeller 153,154 Ball bearing6 Suction chamber 49a Impeller 155 Bearing cover plate

25 Plug 56 Base plate 156 Fan26 Staybolt 64 Spacing pipe 156a Non-drive end shield28 Screw 65 Retainer for neck ring 157a Lip seal

28g Hexagon head screw 66 Clamp 158 Corrugated spring28h Serrated lock washer 67 Lock nut 159 O-ring37 Gasket 79 Diverting disc 164 Terminal box cover

37a Gasket 105 Shaft seal 172 Shaft41 Bearing plate 150a Stator housing 181 Staybolt


Material specification

Pos. Description MaterialCH CHN

DIN W.-Nr. ISO/AISI/ASTM DIN W.-Nr. ISO/AISI/ASTM105 Shaft seal

Motor parts62 Stop ring Stainless steel 1.4401 AISI 316 1.4401 AISI 316

150 Stator housing complete with terminal box

Silumin/composite (MG 71 and MG 80)Silumin (MG 90)

150a Stator housing Silumin/composite (MG 71 and MG 80)Silumin (MG 90)

151 Fan cover Steel (MG 71 and MG 80)Composite PBT/PC (MG 90) 1.0330.3 1.0330.3

153, 154 Ball bearing

155 Bearing cover plate Stainless steel 1.4301 AISI 304 1.4301 AISI 304156 Fan Composite PA 66 30 % GF

156a Non-drive end shield (MG 90) Silumin157a Lip seal (MG 90)158 Corrugated spring159 O-ring NBR rubber

159a Gasket164 Terminal box cover

164a Terminal box

172 Pump shaft:Motor shaft:

Stainless steelSteel

1.40571.0531 AISI 431 1.4057

1.0531 AISI 431

172a Shaft, complete Stainless steel/steel 1.4057/1.0531 AISI 431 1.4057

1.0531 AISI 431

181 Staybolt (only MG 90) SteelPump parts

1a Pump housing2 Discharge chamber Cast iron/stainless steel 0.6020 ASTM 30 B 1.43084 Chamber Stainless steel 1.4301 AISI 304 1.4301 AISI 304

4a Chamber with bearing (CH 4)Stainless steel + aluminium oxide Al2O3 (ceramic) 1.4301 AISI 304 1.4301 AISI 304

6 Suction chamber, complete Cast iron/stainless steel 0.6020 ASTM 30 B 1.430825 Plug Free-cutting steel/stainless steel 1.0718 1.4301 AISI 30426 Staybolt Galvanized steel28 Screw

28g Hexagon head screw28h Serrated lock washer37, 37a Gasket Synthetic-fibre-reinforced rubber (NBR)

41 Bearing plate45 Neck ring PTFE

47a Bearing (shaft) (CH 4-60) Chromium-nickel-molybdenum-cemented tungsten carbide

49

Impeller CH 8 and 12: ∅130 mmCH, CHN 4: ∅95 mmCH, CHN 2: ∅90 mm

Stainless steel 1.4301 AISI 304 1.4301 AISI 304

49a Impeller CH 8 and 12: ∅98 mm Stainless steel 1.4301 AISI 304 1.4301 AISI 30456 Base plate Iron/stainless steel 1.0330.3 1.4301 AISI 30464, 64a Spacing pipe Stainless steel 1.4401 AISI 316 1.4401 AISI 316

65 Retainer for neck ring Stainless steel 1.4301 AISI 304 1.4301 AISI 30466 Clamp Stainless steel 1.4401 AISI 316 1.4401 AISI 31667 Lock nut Stainless steel 1.4301 AISI 304 1.4301 AISI 30479 Diverting disc NR rubber

11

12

CH, CHNCurve charts

Curve conditionsThe guidelines below apply to the curves on the following pages.

• Tolerances according to ISO 9906, Annex A.• The bold curves state the recommended

performance range.• The thin curves are only intended as a guide.• The curves must not be used as guarantee curves.• All curves are based on measurements at:• 1 x 230 V, 50 Hz• 3 x 400 V, 50 Hz• 1 x 220 V, 60 Hz• 3 x 380 V, 60 Hz.• When the motor is running at the lowest or highest

rated voltage, the pump performance will usually vary by ± 0.5 - 1.0 m at a given duty point.

• Specific minimum performance requirements necessitate individual measurements.

• The measurements have been made with airless water at a temperature of 20 °C (~70 °F).

• The conversion between head H (m) and pressure p (kPa) applies to a water density of ρ = 1000 kg/m3.

• The curves apply to a kinematic viscosity of υ = 1 mm2/s(1 cSt)

Curve charts CH, CHN

How to read the curve chartsCurves

QH: Pump performance at actual speed.P2: Pump input power.Eta 1: Total efficiency, i.e. pump with motor, is shown

in the curve charts as Eta 1.NPSH: Average values for all variants shown in

chart 1. When sizing, make a safety allowance of at least 0.5 m.

TM03

845

6 16

070.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 Q [m³/h]

0

5

10

15

20

25

30

35

40

45

50

55

H[m]

0.0 0.2 0.4 0.6 0.8 1.0 Q [l/s]

0

100

200

300

400

500

p[kPa] CH 2, CHN 2

50 HzISO 9906 Annex A

CH(N) 2-20

CH(N) 2-30

CH(N) 2-40

CH(N) 2-50

CH(N) 2-60

0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 Q [m³/h]

0.0

0.1

0.2

0.3

0.4

0.5

P2[kW]

-20-30-40-50

-60

0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 Q [m³/h]

0

1

2

3

4

5

NPSH[m]

0

10

20

30

40

p[kPa]

0

10

20

30

40

50[%]Eta

Eta 1

NPSH

Pump type

Total pump head H = Htotal

The power curve shows the pump input power [P2]

The NPSH curve is an average curve for all variants shown. When sizing the pumps, add a safety margin of at least 0.5 m.

QH curve for the individual pump. The bold curve shows the recommended performance range.

13

14

Performance curves/technical data

CH, CHN 50 Hz

CH, CHN 2

TM03

845

6 16

07

0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 Q [m³/h]

0

5

10

15

20

25

30

35

40

45

50

55

H[m]

0.0 0.2 0.4 0.6 0.8 1.0 Q [l/s]

0

100

200

300

400

500

p[kPa] CH 2, CHN 2

50 HzISO 9906 Annex A

CH(N) 2-20

CH(N) 2-30

CH(N) 2-40

CH(N) 2-50

CH(N) 2-60

0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 Q [m³/h]

0.0

0.1

0.2

0.3

0.4

0.5

P2[kW]

-20-30-40-50

-60

0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 Q [m³/h]

0

1

2

3

4

5

NPSH[m]

0

10

20

30

40

p[kPa]

0

10

20

30

40

50[%]Eta

Eta 1

NPSH

CH 2, CHN 250 Hz

CH 2, CHN 250 HzTechnical data

Dimensions

Weights

Electrical dataTM

00 1

491

4900

Fig. 5 Dimensional sketches, CH, CHN 2 and 4 with MG 71/80 motor

Rp 1

CH 4 Rp 1 + Rp 1 1/4CH 2 Rp 1 Rp 3/8

Rp 3/8

L4

H

L1

160L3

138L2

ø8.5 90

155

130

108

B2

B1

CH, CHN 2 Rp 1CH, CHN 4 Rp 1 + Rp 1¼

Voltage[V]

Frequency[Hz] Pump type Motor type L1

[mm]L2

[mm]L3

[mm]L4

[mm]B1

[mm]B2

[mm]H

[mm]

1 x 220-240 50

CH, CHN 2-20CH, CHN 2-30CH, CHN 2-40CH, CHN 2-50CH, CHN 2-60

MG 71MG 71MG 71MG 71MG 71

304322340358376

7492110128146

638199117135

99117135154172

146146146146146

115115115115115

205205205205205

3 x 220-240/380-415 50



304322340358376

7492110128146

638199117135

99117135154172

146146146146146

110110110110110

200200200200200

3 x 200-220/346-3803 x 200-230/346-400

5060



304322380398416

7492110128146

638199117135

99117135154172

141.5141.5141.5141.5141.5

110110110110110

200200200200200

Pump typeSingle-phase Three-phase

Net weight[kg]

Gross weight[kg]

Shipping volume[m³]

Net weight[kg]

Gross weight[kg]



9.69.6

10.911.311.6

11.411.411.512.012.3

0.01870.01870.01870.02350.0235

11.110.711.011.511.8

11.811.611.712.212.5

0.01870.01870.01870.02350.0235

Voltage[V]

Frequency[Hz] Pump type Motor type I1/1

[A]Ist[A]

P1[W]

P2[W]

C[µF/V]

1 x 220-240 50



2.22.32.62.93.7

10.510.510.510.513

420480570680800

205280370450560

10/40010/40010/40010/40016/400

3 x 220-240/380-415 50



1.6/0.91.7/1

1.9/1.12.35/1.252.55/1.35

11.4/6.611.4/6.611.4/6.611.4/6.611.4/6.6

380460570800820

230300400560580

3 x 200-220/346-380** 50



2.5/1.62.5/1.63.3/2.13.4/2.14.0/2.3

16.2/14.316.2/14.321.6/18.821.6/18.830.8/30.8

370450590690790

230300400490600

** Dual-frequency pump; can be used for both 50 and 60 Hz in the voltage range stated.

15

16

CH 4, CHN 450 HzPerformance curves

CH, CHN 4

TM03

845

7 16

07

0 1 2 3 4 5 6 7 8 Q [m³/h]

0

5

10

15

20

25

30

35

40

45

50

H[m]

0.0 0.4 0.8 1.2 1.6 2.0 Q [l/s]

0

100

200

300

400

500

p[kPa]

CH 4, CHN 450 Hz

ISO 9906 Annex A

CH(N) 4-20

CH(N) 4-30

CH(N) 4-40

CH(N) 4-50

CH(N) 4-60

0 1 2 3 4 5 6 7 8 Q [m³/h]

0.0

0.4

0.8

1.2

P2[kW]

-60-50

-40-30-20

0 1 2 3 4 5 6 7 8 Q [m³/h]

0

1

2

3

NPSH[m]

0

10

20

30

p[kPa]

0

10

20

30

[%]Eta

Eta 1

NPSH

CH 4, CHN 450 HzTechnical data

Dimensions

Weights

Electrical data

TM00

149

1 49

00

Fig. 6 Dimensional sketches, CH, CHN 2 and 4 with MG 71/80 motor

Rp 1

CH 4 Rp 1 + Rp 1 1/4CH 2 Rp 1 Rp 3/8

Rp 3/8

L4

H

L1

160L3

138L2

ø8.5 90

155

130

108

B2

B1

CH, CHN 2 Rp 1CH, CHN 4 Rp 1 + Rp 1¼

Voltage[V]

Frequency[Hz] Pump type Motor

typeL1

[mm]L2

[mm]L3

[mm]L4

[mm]B1

[mm]B2

[mm]H

[mm]

1 x 220-240 50



314342370438466

83110137164191

7299

126153180

108135163190217

146146146

141.5141.5

115115115135135

205205205225225

3 x 220-240/380-415 50



314342370438466

83110137164191

7299

126153180

108135163190217

146146146

141.5141.5

115110110110110

200200200200200

3 x 200-220/346-3803 x 200-230/346-400

5060

CH, CHN 4-20CH, CHN 4-30CH, CHN 4-40

MG 71MG 80MG 80

314382410

83110137

7299

126

108135163

141.5141.5141.5

110110110

200200200


Net weight[kg]

Gross weight[kg]


Net weight[kg]

Gross weight[kg]



9.510.912.316

15.2

10.111.613.017.716.6

0.01870.01870.02350.02350.0235

9.611.012.514.214.9

10.311.713.214.916.3

0.01870.01870.02350.04220.0422

Voltage[V]


[A]Ist[A]

P1[W]

P2[W]

C[µF/V]

1 x 220-240 50



2.33.93.95.86.7

1121212929

540840116013001460

345480690920

1050

16/40025/40025/40030/40050/400

3 x 220-240/380-415 50



1.9/1.02.3/1.32.8/1.64.0/2.3 4.4/2.5

11.4/6.611.4/6.611.4/6.6

26.0/15.026.0/15.0

560820965

13201510

390540660

10001170

3 x 200-220/346-380** 50CH, CHN 4-20CH, CHN 4-30CH, CHN 4-40

MG 71MG 80MG 80

2.6/1.53.5/2.04.2/2.4

16.2/14.321.6/18.830.8/30.8

544808966

390565771


17

18

CH 850 HzPerformance curves

CH 8

TM03

845

8 16

07

0 1 2 3 4 5 6 7 8 9 Q [m³/h]

0

5

10

15

20

25

30

35

40

45

50

55

60

H[m]

0.0 0.4 0.8 1.2 1.6 2.0 2.4 Q [l/s]

0

100

200

300

400

500

600

p[kPa]

CH 850 Hz

ISO 9906 Annex A

CH 8-20

CH 8-30

CH 8-40

CH 8-50

CH 8-60

0 1 2 3 4 5 6 7 8 9 Q [m³/h]

0.0

0.4

0.8

1.2

1.6

P2[kW]

-60-50

-40-30

-20

0 1 2 3 4 5 6 7 8 9 Q [m³/h]

0

1

2

3

4

NPSH[m]

0

10

20

30

40

p[kPa]

0

10

20

30

40[%]Eta

Eta 1

NPSH

CH 850 HzTechnical data

Dimensions

Weights

Electrical dataTM

00 1

189

3505

/TM

00 1

490

3505

Fig. 7 Dimensional sketches, CH 8

Rp 1/2

Rp 1/2Rp 1 1/2

CH 12 Rp 1 1/2CH 8 Rp 1 1/4

L4

240

ø8.5

L1

L3

L2

160

138

110

188

130

108

B2

B1CH 8 Rp 1 1/4

Rp 1 1/2

Rp 1/2

Rp 1/2

CH 12 Rp 1 1/2L4

240

ø8.5

L1

L3

L2

160

138

110

188

130

108

B1

MG 80 motor MG 90 motor

Voltage[V]


[mm]L2

[mm]L3

[mm]L4

[mm]B1

[mm]B2

[mm]

1 x 220-240 50

CH 8-20CH 8-30CH 8-40CH 8-50CH 8-60


311381381459459

699999

129129

588888118118

77107107137137

177177177182182

109109109

3 x 220-240/380-415 50

CH 8-20CH 8-30CH 8-40CH 8-50CH 8-60


311381381411459

699999

129129

588888118118

77107107137137

177177177177182

109109109109

3 x 200/3463 x 200-220/346-400

5060

CH 8-20CH 8-25CH 8-30CH 8-40

MG 71MG 80MG 80MG 80

311381381381

69999999

58888888

77107107107

177177177177

109109109109

3 x 200/346 50 CH 8-50CH 8-60

MG 80MG 80

411411

129129

118118

137137

177177

109109


Net weight[kg]

Gross weight[kg]


Net weight[kg]

Gross weight[kg]


CH 8-20CH 8-25CH 8-30CH 8-40CH 8-50CH 8-60

15-

1719

28.828.8

17-

1921

31.631.6

0.0422-

0.04220.04220.04220.0422

15-

17192025

17-

19212227

0.0422-

0.04220.04220.04220.0422

Voltage[V]


[A]Ist[A]

P1[W]

P2[W]

C[µF/V]

1 x 220-240 50

CH 8-20CH 8-30CH 8-40CH 8-50CH 8-60


3.24.35.67.88.5

1113

26.52929

730970

133017401930

480740940

13101460

16/40020/40025/40030/40030/400

3 x 220-240/380-415 50

CH 8-20CH 8-30CH 8-40CH 8-50CH 8-60


2.1/1.23.4/2.04.7/2.75.2/3.05.9/3.4

11.4/6.618.2/10.527.5/1627.5/1645/26

6501030129016501930

480790

102512901560

3 x 200/346** 50

CH 8-20CH 8-25CH 8-30CH 8-40


3.4/2.04.1/2.44.0/2.34.5/2.5

16.2/9.421.6/12.430.0/17.430.0/17.4

714891

10001720

517696830

1290

3 x 200/346 50 CH 8-50CH 8-60

MG 80MG 80

5.7/3.36.0/3.5

30.0/17.430.0/17.4

17201850

12901370


19

20

CH 1250 HzPerformance curves

CH 12

TM03

845

9 16

07

0 2 4 6 8 10 12 14 Q [m³/h]

0

5

10

15

20

25

30

35

40

45

50

55

60

H[m]

0 1 2 3 4 Q [l/s]

0

100

200

300

400

500

600

p[kPa]

CH 1250 Hz

ISO 9906 Annex A

CH 12-20

CH 12-30

CH 12-40

CH 12-50

CH 12-60

0 2 4 6 8 10 12 14 Q [m³/h]

0.0

0.5

1.0

1.5

2.0

2.5

P2[kW]

-20

-30-40-50

-60

0 2 4 6 8 10 12 14 Q [m³/h]

0

1

2

3

4

5

NPSH[m]

0

10

20

30

40

p[kPa]

0

10

20

30

40

50[%]Eta

Eta 1

NPSH

CH 1250 HzTechnical data

Dimensions

Weights

Electrical dataTM

00 1

189

3505

/TM

00 1

490

3505

Fig. 8 Dimensional sketches, CH 12

Rp 1/2

Rp 1/2Rp 1 1/2

CH 12 Rp 1 1/2CH 8 Rp 1 1/4

L4

240

ø8.5

L1

L3

L2

160

138

110

188

130

108

B2

B1CH 8 Rp 1 1/4

Rp 1 1/2

Rp 1/2

Rp 1/2

CH 12 Rp 1 1/2L4

240

ø8.5

L1

L3

L2

160

138

110

188

130

108

B1

MG 80 motor MG 90 motor

Voltage[V]


[mm]L2

[mm]L3

[mm]L4

[mm]B1

[mm]B2

[mm]

1 x 220-240 50

CH 12-20CH 12-30CH 12-40CH 12-50


351381429459

699999

129

588888118

77107107137

177177182182

109109

3 x 220-240/380-415 50

CH 12-20CH 12-30CH 12-40CH 12-50CH 12-60


351381429459459

699999

129129

588888118118

77107107137137

177177182182182

109109

3 x 200/3463 x 200-220/346-380

5060

CH 12-10CH 12-20CH 12-30CH 12-40


311351429429

69699999

58588888

7777

107107

177177182182

109109

3 x 200/346 50 CH 12-50CH 12-60

MG 90MG 90

459459

129129

118118

137137

182182

110110


Net weight[kg]

Gross weight[kg]


Net weight[kg]

Gross weight[kg]


CH 12-10CH 12-20CH 12-30CH 12-40CH 12-50CH 12-60

-17192627-

-19212829-

-0.04220.04220.04220.0422

-

-1719242727

-1921262929

-0.04220.04220.04220.04220.0422

Voltage[V]


[A]Ist[A]

P1[W]

P2[W]

C[µF/V]

1 x 220-240 50

CH 12-20CH 12-30CH 12-40CH 12-50


4.86.89.611.3

1326.74242

1060152021802560

710108016421630

20/40025/40050/40050/400

3 x 220-240/380-415 50

CH 12-20CH 12-30CH 12-40CH 12-50CH 12-60


3.2/1.84.3/2.56.6/3.88.1/4.89.4/5.5

18.2/10.526.0/15.045.0/26.057.0/33.057.0/33.0

10301530220026903180

7901190177021502560

3 x 200/346** 50

CH 12-10CH 12-20CH 12-30CH 12-40


3.3/1.93.1/1.87.0/4.09.9/5.7

3.3/1.93.1/1.87.0/4.09.9/5.7

550880

16001720

375670

12801290

3 x 200/346 50 CH 12-50CH 12-60

MG 90MG 90

8.5/4.911.4/6.5

8.5/4.911.4/6.5

26003500

22002700


21

34

CH, CHNPumped liquids

Pumped liquidsThin, non-explosive liquids, not containing solid particles or fibres. The liquid must not chemically attack the pump materials.

When pumping liquids with a density and/or viscosity higher than those 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 and oils.

Please note that aggressive liquids (for instance seawater and some acids) may attack or dissolve the protective oxide film of the stainless steel and thus cause corrosion.

List of pumped liquidsA number of typical liquids are listed below.

Other pump versions may be applicable, but those stated in the list are considered to be the best choices.

The table is intended as a general guide only and cannot replace actual testing of the pumped liquids and pump materials under specific working conditions.

The list should, however, be applied with some caution as factors such as concentration of the pumped liquid, liquid temperature or pressure may affect the chemical resistance of a specific pump version.

Safety precautions must be made when pumping dangerous liquids.

Notes

a May contain additives or impurities which can cause shaft seal problems.

b The density and viscosity may differ from those of water. Consider this when calculating motor and pump performance.

c In order to avoid corrosion, the liquid must be free of oxygen.

d

Flammable or combustible liquid.Safety precautions must be considered to ensure safe handling of flammable liquids. Handling the liquid above the flashpoint and/or boiling point will require the greatest restrictions. A seal-less pump may be required. Contact Grundfos.

e Risk of crystallization/precipitation on the shaft seal.f If oil residues are present, EPDM cannot be used.

Pumped liquids Notes Additional information CH CHNWaterBoiler feed water AQQE/CVBE AQQE/CVBECondensate AQQE/CVBE AQQE/CVBECooling and cutting lubricant a AQQV AQQVGroundwater < 300 ppm chloride AQQE/CVBE AQQE/CVBEDemineralised water AQQE/CVBEDistrict heating water AQQE/CVBE AQQE/CVBEOil-containing water AQQV/CVBV AQQV/CVBVSoftened water AQQE/CVBE AQQE/CVBE

Swimming pool water, chlorinated 40 °C, 150 ppm chloride, < 2 ppm free chlorine AQQE/CVBE AQQE/CVBE

CoolantsEthylene glycol a, b < 50 °C AQQE AQQEGlycerine (glycerol) a, b < 50 °C AQQE AQQEHydrocarbon-based coolant b, d 50 °C AQQV AQQVPotassium acetate (inhibited) a, b, c, e < 20 °C AQQE AQQEPotassium formate (inhibited) a, b, c, e < 20 °C AQQE AQQEPropylene glycol a, b < 50 °C AQQE AQQEFuelsDiesel oil d AQQV/CVBV AQQV/CVBVJet fuel d AQQV/CVBV AQQV/CVBVKerosene d AQQV/CVBV AQQV/CVBVNaphta d AQQV/CVBV AQQV/CVBVPetrol d AQQV/CVBV AQQV/CVBVBiodiesel d AQQV/CVBV AQQV/CVBVMineral oilsCrude oil a, b, d < 20 °C AQQV/CVBV AQQV/CVBVMineral lubricating oil b, d AQQV/CVBV AQQV/CVBVMineral motor oil b, d AQQV/CVBV AQQV/CVBVSynthetic oilsSynthetic lubricating oil b, d AQQV/CVBV AQQV/CVBVSynthetic motor oil b, d AQQV/CVBV AQQV/CVBVSilicone oil b AQQV/CVBV AQQV/CVBV

Pumped liquids CH, CHN

Vegetable oilsCorn oil a, b AQQV/CVBV AQQV/CVBVOlive oil a, b AQQV/CVBV AQQV/CVBVPeanut oil a, b AQQV/CVBV AQQV/CVBVRape-seed oil a, b AQQV/CVBV AQQV/CVBVSoya oil a, b AQQV/CVBV AQQV/CVBVCleaningAlkaline degreasing agent a, f < 80 °C AQQE AQQESoap (salts of fatty acids) a < 80 °C AQQV AQQVOrganic solventsAcetone e 40 °C AQQE/CVBE AQQE/CVBEEthyl alcohol (ethanol) e 40 °C AQQE/CVBE AQQE/CVBEIsopropyl alcohol e 40 °C AQQE/CVBE AQQE/CVBEMethyl alcohol (methanol) e 40 °C AQQE/CVBE AQQE/CVBEOxidantsHydrogen peroxide 20 °C, 5 % AQQE/CVBESalts

Ammonium bicarbonate b20 °C, 15 % AQQE 60 °C, 30 % AQQE

Potassium bicarbonate b20 °C, 20 % AQQE/AQQV60 °C, 30 % AQQE/AQQV

Sodium carbonate b, e20 °C, 20 % AQQE60 °C, 30 % AQQE

Potassium permanganate 20 °C, 1 % AQQE/AQQV

Sodium nitrate b20 °C, 5 % AQQE/AQQV

60 °C, 30 % AQQE/AQQV

Sodium nitrite b20 °C, 20 % AQQE/AQQV60 °C, 30 % AQQE/AQQV

Sodium phosphate (mono) b 60 °C, 5 % AQQE/AQQV

Sodium phosphate (di) b30 °C, 30 % AQQE/AQQV60 °C, 30 % AQQE/AQQV

Sodium phosphate (tri) b, e20 °C, 10 % AQQE/AQQV70 °C, 20 % AQQE/AQQV

Sodium sulphate b, e 60 °C, 30 % AQQE/AQQV

Sodium sulphite b, e20 °C, 1 % AQQE/AQQV

60 °C, 20 % AQQE/AQQVAcidsAcetic acid 20 °C, 5 % AQQECitric acid 20 °C, 1 % AQQENitric acid b 20 °C, 5 % AQQE/AQQVPhosphoric acid a 20 °C, 1 % AQQE/AQQVAlkaliesAmmonium hydroxide 30 °C, 30 % AQQE AQQECalcium hydroxide a 30 °C, 5 % AQQE AQQEPotassium hydroxide b, e 20 °C, 20 % AQQE

60 °C, 20 % AQQESodium hydroxide b, e 20 °C, 20 % AQQE

80 °C, 20 % AQQE

Pumped liquids Notes Additional information CH CHN

35

CH, CHN

36

Variants

Lists of variantsAlthough the Grundfos CH, CHN product range offers a number of pumps for different applications, customers require specific pump solutions to satisfy their needs. Below are the options available for customizing the CH. Contact Grundfos for further information or for requests other than the ones mentioned below.

Motors

Shaft seals

Connections and other variants

Certificates and nameplates

PumpsMotor with thermal protection

Grundfos offers motors with bimetallic thermal switches or temperature-controlled PTC sensors (thermistors) in the motor windings.

Oversize motor

In installations where one of the conditions mentioned below is present, the motor size must be evaluated to make sure there will be no risk of overload. • Ambient temperatures above 55 °C.• Liquid temperatures below 0 °C.• Installation at an altitude of more than

1000 metres above sea level • Use of glycol or other high-viscous liquids.Alternative motors are available on request.

Dual-voltage motors 50/60 hz

In some cases the standard product can run at dual voltage and frequency. If the standard product cannot be used for dual voltage, a bigger motor can very often be used instead.

Use of external frequency converter

For most three-phase CH, CHN pumps a frequency converter can be used. Single-phase motors are not suitable for frequency converter operation. In many cases where an external frequency converter is used it is necessary to protect the motor against voltage peaks higher than 650 V (peak value). In these cases it is often less expensive to ask for phase insulation in the pump than use a filter such as an LC filter. Grundfos offers pumps with phase insulation to protect the pump against voltage peaks up to 1000 V (peak values). This is a customized version, and the supplier of the frequency converter must be consulted.

Harting plug Harting plugs are available for easier replacement of pumps.

Terminal box position Other terminal box positions are possible.

CVBV, CVBE, AQQE, AQQV are standard for CH, CHN pumps.Shaft seals with FFKM or FXM O-ring material are recommended for applications where the pumped liquid may damage the standard O-ring material.

Pipe connections NPT and Rp threads are available.

Certificates

Certificate of compliance with the orderTest certificateInspection certificateStandard test report

Extra nameplate

UR-marked motorIf the UL-listed product according to UL778 is not available, a pump with UR-marked motor according to UL1004 can be offered as an alternative.

Low-temperature pump

Exposed to temperatures below –20 °C, coolant pumps may require neck rings with a different diameter or without a neck ring in order to prevent impeller drag. If neck rings are removed, a reduction of the head must be expected. In some extreme cases, –25 °C cold liquids can be pumped by a CH pump. Contact Grundfos.

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