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Specifications

Model LP121A-5100

Volume ............................................................................................... Up to 31.7 GPM (120 LPM)

Discharge Pressure ............................................................................ Up to 1740 PSI (120 Bar)

Inlet Pressure ..................................................................................... Up to 90 PSI (6.2 Bar)

Speed ................................................................................................. Up to 1000 RPM

Plunger Diameter ............................................................................... 36 mm

Stroke ................................................................................................. 42 mm

Crankcase Oil Capacity ..................................................................... 116 fl.oz. (3,430 ml)

Temperature of Pumped Fluids ......................................................... Up to 160

o

F (71

o

C)

Inlet Port ............................................................................................ 3 x 1-1/2" BSPP

Discharge Port ................................................................................... 3 x 1” BSPP

Crankshaft Mounting ......................................................................... Either Side

Shaft Rotation .................................................................................... Top of Pulley Towards Fluid End

Weight................................................................................................ 116 lbs. (52.6 kg)

Crankshaft Diameter.......................................................................... 35 mm

Valve Casing ...................................................................................... 316 S.S.

Volumetric Efficiency @ 800 RPM................................................... 0.96

Mechanical Efficiency @ 800 RPM.................................................. 0.85

PULLEY INFORMATION

Pulley selection and pump speed are based on a 1725

RPM  motor  and  "B"  section  belts.    When  selecting

desired  GPM,  allow  for  a  ±5%  tolerance  on  pumps

output due to variations in pulleys, belts and motors

among manufacturers.

1. Select GPM required, then select appropriate

motor and pump pulley from the same line.

2. The desired pressure is achieved by selecting the

correct nozzle size that corresponds with the pump

GPM.

HORSEPOWER INFORMATION

We recommend that a 1.1 service factor be specified

when s electing an electric motor as the power source.

To compute specific pump horsepower requirements,

use the following formula:

HP = (GPM X PSI) / 1440

Pump speeds of 640 RPM and above require a minimum inlet pressure of 12 psig.

Pump speeds of 805 RPM and above require a minimum inlet pressure of 14 psig.

PUMP 

PULLEY

MOTOR 

PULLEY

GPM

RPM

600 PSI

800 PSI

1000 PSI

1300 PSI

1740 PSI

12.75"

3.95"

15.9

500

6.6

8.8

11.0

14.4

19.2

12.75"

4.35"

17.6

555

7.3

9.8

12.2

15.9

21.3

12.75"

4.95"

20.3

640

8.5

11.3

14.1

18.3

24.5

12.75"

5.35"

22.0

695

9.2

12.2

15.3

19.9

26.6

12.75"

5.75"

23.8

750

9.9

13.2

16.5

21.5

28.8

12.75"

6.15"

25.4

800

10.6

14.1

17.6

22.9

30.7

12.75"

6.50"

31.7

1000

13.2

17.6

22.0

28.6

38.3

LP121-5100 PULLEY SELECTION AND HORSEPOWER REQUIREMENTS

Содержание LP121A-5100

Страница 1: ...llation Instructions page 2 Pump Specifications page 3 Exploded View page 4 Parts List Kits page 5 Repair Instructions pages 6 8 Trouble Shooting page 9 Recommended Spare Parts List Pump Mounting Sele...

Страница 2: ...el is between the two lines on the oil dipstick DO NOT OVERFILL Use Giant Recommended Oil Crankcase oil should be changed after the first 50 hours of operation then at regular intervals of 500 hours o...

Страница 3: ...lect GPM required then select appropriate motor and pump pulley from the same line 2 The desired pressure is achieved by selecting the correctnozzlesizethatcorrespondswiththepump GPM HORSEPOWER INFORM...

Страница 4: ...4 Exploded View LP121A 5100...

Страница 5: ...Shaft Seal 3 35 07135 0100 Seal Sleeve 3 36 13291 Grooved Ring 3 37 07139 0100 Seal Case 3 38 07140 O Ring 3 39 07142 0100 Pressure Ring 3 40 07144 Sleeve 6 41 07146 0100 Support Ring 3 42 07147 Tensi...

Страница 6: ...sleeves 40 36 support ring 41 and o rings 35A and 35B in Lp255A only from the manifold and seal sleeve respectively For LP255 only remove support ring 37 Examine seals carefully and replace if worn C...

Страница 7: ...10 For LP122A LP122A 4000 pumps generouslylubricatethe inside of the oil seals 31A 33 and o ring 32A Next placethesealretainer complete 31 over the steel plunger base seat firmly into the crankcase R...

Страница 8: ...41 and v sleeves 40 into valve casing 17 Next place valve assemblies 46A into manifold after first lubricatingtheo ring 44A Seat firmly into manifold 16 Tighten hex nuts 49A in a crosswise pattern sh...

Страница 9: ...de of oil Improper amount of oil in crankcase REMEDY Replace packing seals Replace spring Tighten or Replace belt Replace nozzle Clean valve assembly Clean strainer Repair Replace hose Clean Reset and...

Страница 10: ...it lit Valve Spare Parts 1 kit pump X See page 5 for kit list Position Item Description Torque Amount 10 08093 Screw Cover 125 in lbs 17 08095 Hex Screw Bearing Cover 125 in lbs 24A 13277 Hex Screw Co...

Страница 11: ...11 LP121A 5100 DIMENSIONS INCHES mm...

Страница 12: ...es or modifications made by the customer or third party 6 The operation of pumps and or accessories exceeding the specifications set forth in the Operations Manuals provided by Giant Industries Inc Li...

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