Giant LP122A-3100 User Manual

Model

LP122A-3100

Triplex Ceramic
Plunger Pump
Operating Instructions/
Repair and Service
Manual

Updated 11/06

Contents:

Installation 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: page 10
Torque Specifications: page 10
Pump Mounting
Selection Guide: page 10
Dimensions: page 11
Warranty Information: back page

INSTALLATION INSTRUCTIONS

Installation of the Giant Industries, Inc., pump is
not a complicated procedure, but there are some
basic steps common to all pumps. The following
information is to be considered as a general
outline for installation. If you have unique
requirements, please contact Giant Industries, Inc.
or your local distributor for assistance.

1. The pump should be installed flat on a base to a
maximum of a 15 degree angle of inclination to
ensure optimum lubrication.

2. The inlet to the pump should be sized for the flow
rate of the pump with no unnecessary restrictions that
can cause cavitation. Teflon tape should be used to
seal all joints. If pumps are to be operated at
temperatures in excess of 1600 F, it is important to
insure a positive head to the pump to prevent
cavitation.

3. The discharge plumbing from the pump should be
properly sized to the flow rate to prevent line
pressure loss to the work area. It is essential to
provide a safety bypass valve between the pump and
the work area to protect the pump from pressure
spikes in the event of a blockage or the use of a shut­off gun.

4. Use of a dampener is necessary to minimize
pulsation at drive elements, plumbing, connections,
and other system areas. The use of a dampener with
Giant Industries, Inc. pumps is optional, although
recommended by Giant Industries, Inc. to further
reduce system pulsation. Dampeners can also reduce
the severity of pressure spikes that occur in systems
using a shut-off gun. A dampener must be positioned
downstream from the unloader.

5. Crankshaft rotation on Giant Industries, Inc.
pumps should be made in the direction designated by
the arrows on the pump crankcase. Reverse rotation
may be safely achieved by following a few guide­lines available upon request from Giant Industries,
Inc. Required horsepower for system operation can
be obtained from the charts on pages 3.

6. Before beginning operation of your pumping
system, remember: Check that the crankcase and
seal areas have been properly lubricated per recom­mended schedules. Do not run the pump dry for
extended periods of time. Cavitation will result in
severe damage. Always remember to check that all
plumbing valves are open and that pumped media
can flow freely to the inlet of the pump.

Finally, remember that high pressure operation in a pump system has many advantages. But, if it is used carelessly and without regard
to its potential hazard, it can cause serious injury.

IMPORTANT OPERATING CONDITIONS

Failure to comply with any of these conditions invalidates the warranty.

1. Prior to initial operation, add oil to the crankcase so that
oil level is between the two lines on the oil dipstick. DO
NOT OVERFILL.

Use SAE 80-90W Industrial Gear Lube Oil (p/n

01154)

Crankcase oil should be changed after the first 50 hours
of operation, then at regular intervals of 500 hours or less
depending on operating conditions.

2. Pump operation must not exceed rated pressure, volume,
or RPM. A pressure relief device must be installed in the
discharge of the system.

3. Acids, alkalines, or abrasive fluids cannot be pumped
unless approval in writing is obtained before operation from
Giant Industries, Inc.

4. Run the pump dry approximately 10 seconds to drain the
water before exposure to freezing temperatures.

NOTE: Contact Giant Industries for Service School Information. Phone: [phone]

2

Specifications

Model LP122A-3100

U.S. ................. Metric

Volume ..............................................................................35.6 GPM........ 134.7 l/m

Discharge Pressure .......................................................... 1300 PSI.......... 90 Bar

Inlet Pressure .................................................................... 90 PSI ............. 6.2 Bar

Speed .......................................................................................................... Up to 800 RPM

Plunger Diameter.............................................................. 1.65”................ 42 mm

Stroke................................................................................ 1.65”................ 42 mm

Crankcase Oil Capacity .................................................... 116 fl.oz. .......... 3.43 liters

T emperature of Pumped Fluids.........................................160

Inlet Port ..................................................................................................... 1-1/2" BSP

Discharge Port............................................................................................ 1" BSP

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

Shaft Rotation ................................................................... T op of Pulley Towards Fluid End

Weight ...............................................................................116 lbs. ............ 52.6 kg

Crankshaft Diameter ........................................................ 1.38.................. 35 mm

Valve Casing - LP122A-3100 ..................................................................... Aluminum Bronze-Nickle

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

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

o

F ............... 71oC

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.

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

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:

HORSEPOWER INFORMATION

HP = (GPM X PSI) / 1440

LP122A-3100 PULLEY SELECTION AND HORSEPOWER REQUIREMENTS

PUMP

PULLEY

12.75" 3.95" 22.3 500 9.6 12.7 15.9 20.7 31.9

12.75" 4.35" 24.7 555 10.6 14.1 17.6 22.9 35.3

12.75" 4.95" 28.5 640 12.2 16.3 20.4 26.5 40.7

12.75" 5.35" 30.9 695 13.2 17.7 22.1 28.7 44.1

12.75" 5.75" 33.4 750 14.3 19.1 23.9 31.0 47.7

12.75" 6.15" 35.6 800 15.3 20.3 25.4 33.1 50.9

MOTOR
PULLEY

GPM RPM 600 PSI 800 PSI 1000 PSI 1300 PSI 2000 PSI*

3

Exploded View - LP122A-3100

4