GRUNDFOS DATA BOOKLET - Irrigation Warehouse

1 GRUNDFOS data BOOKLETCH, CHNH orizontal multistage end-suction pumps50/60 Hz2 ContentsGeneral descriptionIntroduction 3 Applications 3 Pumped liquids 3 Operating conditions 3 Performance range 4 IdentificationType key 5 ConstructionPump 6 Motor 6CH, CHN 2-50 7CH, CHN 4-60 8CH 8-50 9CH 12-50 10 Material specification 11 Curve chartsCurve conditions 12 How 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 34 List of pumped liquids 34 VariantsLists of variants 36 Motors 36 Shaft seals 36 Connections and other variants 36 Certificates and nameplates 36 Pumps 36 Further product documentationWebCAPS 37 WinCAPS 383CH, CHNG eneral descriptionIntroductionThe GRUNDFOS CH and CHN pumps are non-self-priming, horizontal.

2 Multistage centrifugal and motor are integrated in a compact and user-friendly design fittet to a base plate making the pumps suitable for installation in compact and CHN pumps have many incorporated advan-tages such as those mentioned 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 cast iron parts High corrosion resistance.

3 Better efficiency because of smooth solutionsSee List of Variants on page 36. Motor adaptation. Pump body : 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 : Discharge chamber, suction chamber, base plate and all parts in contact with the pumped liquid are made of stainless pump is CH and CHN pumps are designed for small domestic and industrial 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 liquidsCHThin, clean, non-aggressive and non-explosive liquids without solid particles or , clean.

4 Slightly aggressive and non-explosive liquids without solid particles or conditions*Lower temperatures are possible. See Lists of variants on page maximum operating pressure depends on the temperature of the pumped liquid. See the 5939 4402 Liquid temperature range: *0 C to +90 C. Max. ambient temperature: +55 operating pressure1 MPa (10 bar) MPa (6 bar)CH 2, CHN 2CH 4, CHN 40 C to +40 C +41 C to +90 CCH 8CH 120 C to +55 C +56 C to +90 CMin. inlet pressure: According to the NPSH curve plus a safety margin of inlet pressure: Limited by the max.

5 Operating descriptionCH, CHNP erformance rangeCH, CHN, 50 HzCH, CHN, 60 HzTM02 1239 390212345678910111213Q [m /h]0510152025303540455055H[m]01002003004 00500p[kPa]CH, CHN50 HzISO 9906 Annex ACH 12CH 8CH 4CH 2 CHN 2 CHN 4TM02 1240 3902123456789101112131415Q [m /h]05101520253035404550556065707580H[m] [l/s]0100200300400500600700800p[kPa]CH, CHN60 HzISO 9906 Annex ACH 2CH 4CH 8CH 12 CHN 2 CHN 45 Type keyIdentificationType keyCodes for physical dimensions Codes for materials ExampleCH(N) 4 -30 A W -A -CVBEType rangeRated flow rate [m /h]Max. discharge pressure [m]Code for pump versionCode for physical dimensionsCode for materials, excluding plastic and rubber partsCode for shaft sealB:NPT pipe connectionN:Different connection diametersW:Whitworth thread, Rp ISO 7/1O:Outside :Basic versionI:Stainless materialsX:Special , CHN6 ConstructionPumpThe CH, CHN pumps are non-self-priming, horizontal, multistage centrifugal pumps with mechanical shaft seal and through-going pump-motor shaft.

6 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 or FKM O-rings are available as standard. See pipe connections in the 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 three-phase motors do not incorporate thermal protection and therefore require external motor protection in accordance with local sound pressure level of the pump is lower than the limiting values stated in the EC Council Directive 98/37/EC relating to converter operationMost three-phase motors can be operated with a frequency converter.

7 See Lists of variants on page 2, CHN 2CH 4, CHN 4CH 8CH 12 Axial suction portRp 1Rp 1Rp 1 1/4Rp 1 1/2Rp 1 1/2 Radial discharge portRp 1Rp 1Rp 1 1/4Rp 1 1/2 Drain hole, priming holeRp 3/8Rp 3/8Rp 1/2Rp 1/2 Rated speed:50 Hz, 2900 min-160 Hz, 3400 min-1 Enclosure class:IP 54 Insulation class:FStandard voltages:1 x 220-240 V, 50 Hz3 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 HzVoltage tolerance:+6 %/ 10 %Sound-pressure level: 70 dB (A)7 ConstructionCH, CHNCH, CHN 2-50 Sectional drawingFig. 1 CH, CHN 2-50 with MG 71 motor ComponentsTM03 2039 35046545428g5628623715515321721541581511 591561056449164164a7966 chamber56 Base plate151 Fan cover4 Chamber62 Stop ring153,154 Ball bearing6 Suction chamber64 Spacing pipe155 Bearing cover plate25 Plug65 Retainer for neck ring156 Fan28 Screw66 Clamp158 Corrugated spring28gHexagon head screw67 Lock nut159O-ring37 Gasket79 Diverting disc164 Terminal box cover45 Neck ring105 Shaft seal164aTerminal box49 Impeller150aStator housing172 Shaft8 ConstructionCH, CHNCH, CHN 4-60 Sectional drawingFig.

8 2 CH, CHN 4-60 with MG 80 motorComponentsTM00 6609 chamber56 Base plate153,154 Ball bearing4 Chamber62 Stop ring155 Bearing cover plate4aChamber with bearing64 Spacing pipe156 Fan6 Suction chamber64aSpacing pipe158 Corrugated spring25 Plug66 Clamp159O-ring28 Screw67 Lock nut164 Terminal box cover28gHexagon head screw79 Diverting disc164aTerminal box37 Gasket105 Shaft seal172 Shaft47aBearing150aStator housing49 Impeller151 Fan cover9 ConstructionCH, CHNCH 8-50 Sectional drawingFig. 3 CH 8-50 with MG 80 motorComponentsTM03 2036 housing45 Neck ring151 Fan cover4 Chamber49 Impeller153,154 Ball bearing6 Suction chamber49aImpeller155 Bearing cover plate25 Plug56 Base plate156 Fan26 Staybolt64 Spacing pipe158 Corrugated spring28 Screw65 Retainer for neck ring159O-ring28gHexagon head screw66 Clamp164 Terminal box cover28hSerrated lock washer67 Lock nut164aTerminal box37 Gasket79 Diverting disc172 Shaft37aGasket105 Shaft seal41 Bearing plate150aStator housing10 ConstructionCH, CHNCH 12-50 Sectional drawingFig.

9 4 CH 12-50 with MG 90 motorComponentsTM03 2037 housing45 Neck ring151 Fan cover4 Chamber49 Impeller153,154 Ball bearing6 Suction chamber49aImpeller155 Bearing cover plate25 Plug56 Base plate156 Fan26 Staybolt64 Spacing pipe156aNon-drive end shield28 Screw65 Retainer for neck ring157aLip seal28gHexagon head screw66 Clamp158 Corrugated spring28hSerrated lock washer67 Lock nut159O-ring37 Gasket79 Diverting disc164 Terminal box cover37aGasket105 Shaft seal172 Shaft41 Bearing plate150aStator housing181 Staybolt11 ConstructionCH, CHNM aterial specificationPos. DescriptionMaterialCHCHNDIN sealMotor parts62 Stop ringStainless 316150 Stator housing complete with terminal boxSilumin/composite (MG 71 and MG 80)Silumin (MG 90)150a Stator housingSilumin/composite (MG 71 and MG 80)Silumin (MG 90)151 Fan coverSteel (MG 71 and MG 80)Composite PBT/PC (MG 90) , 154 Ball bearing155 Bearing cover plateStainless 304156 FanComposite PA 66 30 % GF156a Non-drive end shield (MG 90)Silumin157a Lip seal (MG 90)

10 158 Corrugated spring159O-ringNBR rubber159a Gasket164 Terminal box cover164a Terminal box172 Pump shaft:Motor shaft:Stainless 431172a Shaft, completeStainless steel/steel 431181 Staybolt (only MG 90)SteelPump parts1aPump housing2 Discharge chamberCast iron/stainless 30 3044aChamber with bearing (CH 4)Stainless steel + aluminium oxide Al2O3 (ceramic) 3046 Suction chamber, completeCast iron/stainless 30 steel/stainless 30426 StayboltGalvanized steel28 Screw28gHexagon head screw28hSerrated lock washer37, 37aGasketSynthetic-fibre-r