GRUNDFOS HS Pumps

GRUNDFOS HORIZONTAL SPLITCASE PUMPS The Reliable & Efficient Workhorse

PUMP DESCRIPTION

Introduction The Grundfos HS horizontal splitcase pump is an unstop-

• The pumps are non-self-priming, centrifugal volute

• Grundfos HS pumps are available in three different

pable workhorse. The HS delivers high efficiency perform-



pumps with radial suction and radial discharge ports



ance and low life-cycle costs. The highly reliable hydraulic



and horizontal shaft.

1. Pump with motor and base frame.

design combined with the service-friendly layout of the

variants:

2. Bare shaft pump with base frame.

splitcase housing assures maximum benefits for the user.

• Suction and discharge flanges are PN 16 according to

3. Bare shaft pump; ie pump without motor and without





EN 1092-2 (DIN2501).

base frame.

All HS pumps are tested to ensure the performance requirements are achieved prior to delivery. The HS is a well-built, reliable splitcase pump proudly offered by Grundfos – the

Applications

splitcase pump market leaders!

The Grundfos HS pumps are used in these main fields of application:

• The pump is long-coupled with a totally enclosed fan-

• The split-case construction enables removal and



cooled standard motor with main dimensions to IEC



dismantling of the internal pump parts, e.g. bearings,



and DIN standards and mounting designation B3



wear rings, impeller and shaft seal, without disturbing



(IM 1001).



the motor and pipework.

Technical Data Flow, Q:

10 to 2500m3/hr

Commercial systems

• The mechanical shaft seal has dimensions according

• Replaceable case wear rings protect the pump casing

Head, H:

5 to 148m

• Air-conditioning and chilled water system





while reducing maintenance costs and maintaining

Motor, range:

1.5 – 600kW

• Water condensing systems and cooling towers



high operating efficiencies.

Motor, cycles:

50 Hz

• District heating plants and heating systems

Operating Pressure: 16 bar, max.

to EN 12756.

• The rotating assembly is dynamically balanced

according to ISO 1940 class G6.3.

• Pump and motor are mounted on a common base

Liquid temperature: Up to 100°C

Industrial systems

Discharge Sizes:

50 – 350mm

• Process cooling and chilled water systems

• Impellers are double suction providing long operating,

Impeller Sizes:

242 – 630mm

• Industrial heating systems



corrosion free life. Impellers are constructed in

• Bronze shaft sleeves protect the shaft and help with

• Washdown and cleaning systems



ASTM B584 bronze and are hydraulically balanced.



Water distribution • Public waterworks • Non-potable water systems Irrigation and agriculture • Field irrigation (flooding) • Sprinkler irrigation



frame in the form of a welded, steel C-channel profile.

fixation of the impeller.

SELLING FEATURES Pump casing

Bearing Housing

• Compensated double volute design virtually eliminates

• Grundfos superior design combines seal and bearing

radial forces caused by a hydraulic imbalance inherent

chambers to allow inspection without removing the top

in pump volutes

half of the pump casing – saving time, reducing the use

• Double volute design extends seal and bearing life,

of lifting equipment, and decreasing the safety risk

minimizing noise and vibration, and improving

• Compact, robust housing construction has a 360-degree

operating efficiency – meaning less wear and lower

machined fit and limits shaft deflection and optimizes

maintenance costs

alignment

Coupling guard - stainless steel

Motor

Impeller Coupling - Grid

• Extended vanes and enlarged eye contribute to a reduction in vibration and noise Coupling • Grundfos specified grid coupling designed to meet the pump torque requirements provides long service life and reduced maintenance costs Shaft

Impeller Shaft sleeve

Base plate

Wear ring

Shaft seal Bearing Pump housing Bearing housing

HS range over view 2/4/6 pole motors H [m]

HS

Vers ion 5 2-pole, 50 Hz

140 120

125- 100-305

100 80 65-50-242

100-80-242

Documentation Data Booklet

Service Instructions

• Technical product descriptions

• Description of service procedures

• Product applications

• Intended for service technicians

• Performance curves

• Available in WebCAPS

• Accessories

125- 100-280

60

• Available in WebCAPS

50

WebCAPS/WinCAPS • Pump selection program

40

30

20

I&O

• PDF literature files available

• Installation and operation

• Service videos

• Warnings and safety requirements

• Replacement pump information

• Targeted for installers, servicers, and end-users

• Pump CAD drawings

• Shipped with the pump

14

10 20

25

30

40

50

60

80

100

150

200

250

300

400

500

Q [m�/h]

H [m]

HS

Vers ion 5 4-pole, 50 Hz

200

important service & installation information

150 350-250-630

100 80

200-150-508

200-150-483

60

35

300-200-489

50

1 50-1

40

1

30

200-150-381

025

0-3 8

0-4 98

10 Ways to Kill Your HS Pump

1

250-200-381

65-50-331

25

2 5-38

125-100-381

100-80-356

30

0-2 5

200-150-305A

20

20 015

125-100-305

15 65-50-242

03

05 C

300-250-305

100-80-242

400-350-397

10 8

150-125-305

2. Starve it Never grease or oil the pump.

250-200-305

6 5 125-100-280

4 20

30

H [m]

40

50 60

HS

70

Vers ion 5 6-pole, 50 Hz

60 50

80

100

150

200

300

400 500 600

1. Overwork it Work the pump continuously at higher capacities, flows, heads, or speeds than originally specified.

800 1000

1500 2000

3000

Q [m�/h]

3. Choke it • Lower the water level in the sump. • Let the suction strainer clog and never clean it. • Let the temperature of fluid rise without raising the suction pressure.

8. Shake it Don’t align at installation or install on a flimsy foundation.



350-250-630

40

4. Fry it Operate at shutoff for a long time with the bypass line closed tight will convert your power to heat.

200-150-508

30 200-150-483

300-200-489

350-250-498

20 350-300-508

15 250-200-381

300-250-381

400-350-397

5. Poison it Change the pumped fluid without checking with the manufacturer (for example adding chemicals).

10

6. Stab it Remove the suction strainers which will introduce grit, sand, and scale into the fluid.

8 7

300-250-305

6 5 4 60

80

100

150

200

300

400

500 600

800

1000

1500

2000 2500

Q [m�/h]

7. Break its limbs Impose heavy piping loads on the suction and discharge nozzle, either through initial misalignment or through thermal expansion.

9. Drown it For a packed pump with a drain for the gland leakage: • Plug the drain with a cigarette butt, gum or paper. • Remove the water shield. • Line up the splits on the packing rings. 10. Neglect check-ups • Ignore the manufacturer’s recommendations for “check-ups” • Don’t check packing, gaskets, o-rings, or other small parts. • Don’t ever repaint it, or lubricate the coupling, if required. • Don’t check vibration.



For product requests, please contact: [email protected]

Grundfos A/S

Poul Due Jensens Vej 7 DK-8850 Bjerringbro Tel: +45 87 50 14 00

www.grundfos.com/industry The name Grundfos, the Grundfos logo, and the payoff Be–Think–Innovate are registrated trademarks owned by Grundfos Management A/S or Grundfos A/S, Denmark. All rights reserved worldwide.

PN 97718637

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