Giant GXR User Manual
Model
Triplex
Plunger Pump
Operating Instructions/
Repair Instructions
Manual
GXR Series
Consumer Pump
Horizontal/Vertical Pump
with built-in Regulator,
Thermal Relief Valve and
Siphon Injector
MADE IN THE USA
Updated 8/01
Contents:
Installation Instructions: page 2
Pump Specifications: page 3
Exploded View/Kits: page 4
Parts List: page 5
Torque Specifications: page 5
Repair Instructions: pages 6-7
Dimensions: back page
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. For horizontal applications the pump should be
installed flat on a base to a maximum of a 15
degree angle of inclination to ensure optimum
lubrication.
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
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. Maximum inlet
o
fluid temperature is 80
F.
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 regulator.
6. Before beginning operation of your pumping
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 shut-off gun.
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, Check for proper oil
level. DO NOT OVERFILL.
2. Pump operation must not exceed rated
pressure, volume, or RPM.
A pressure relief
device must be installed in the discharge of the
Use Giant Synthetic Oil
Crankcase oil should be changed after the
first 50 hours of operation, then at regular
intervals of 500 hours or less depending on
system.
3. Acids, alkalines, or abrasive fluids cannot be
pumped unless approval in writing is obtained
before operation from Giant Industries, Inc.
operating conditions.
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: (419)-531-4600
Specifications
Model GXR Series
GXR2224..............................................................................................2.2 GPM @ 2400 PSI
GXR2424..............................................................................................2.4 GPM @ 2400 PSI
Maximum Inlet Pressure.......................................................................Up to 90 PSIG
RPM......................................................................................................3450
Plunger Diameter..................................................................................16mm
Stroke GXR2224 ..................................................................................4.7mm (6.1
Stroke GXR2424 ..................................................................................5.1mm (6.3
Crankcase Oil Capacity ........................................................................4.7 fl. oz. (4.1 fl.oz. horizontal)
Temperature of Pumped Fluids ............................................................Up to 80
Inlet Port ...............................................................................................1/2" NPT
Discharge Ports.....................................................................................3/8" NPT
Shaft Rotation.......................................................................................Either Direction
Weight...................................................................................................9 lbs.
Width ....................................................................................................8.325"
Height ...................................................................................................6.45"
Swash Plate Bore (Horizontal) .............................................................3/4" x 3/16" Keyway
Swash Plate Bore (Vertical) ..................................................................7/8" x 3/16" Keyway
Valve Type ............................................................................................Polyamide Plastic
1
A 25 PSIG minimum inlet pressure is required.
2
The pump itself can be driven in either direction of rotation; however, the cooling fan
on TEFC motors must always be positioned so that the cooling air is drawn from the
non-drive end of the motor towards the pump.
o
F
1
o
angle)
o
angle)
2
GXR2224 ELECTRIC HOR SEPOW E R
REQUI R EMENTS
RPM GPM 1000 PS I 1500 PSI 2000 PSI 2500 PSI
3450 2.2 1.5 2.3 3.0 3.8
GXR2224 GAS ENGINE HORSEPOWER
REQUIREMENTS*
RP M GPM 1000 P SI 1500 PS I 2000 PSI 2500 PSI
3450 2.2 2.0 3.0 4.0 5.0
GXR2424 ELECTRIC HORSEPOWER
REQUIREMENTS
RPM GPM 1000PSI 1500PSI 2000PSI 2400 PSI
3450 2.4 1.6 2.5 3.3 3 .9
GXR2424 GAS ENGINE HORSEPOWER
REQUIREMENTS*
RPM GPM 1000PSI 1500PSI 2000PSI 2400 PSI
3450 2.4 2.2 3.3 4.4 5.2
HORSEPOWER RATINGS:
The rating shown are the power
requirements for the
pump. Gas
engine power outputs must be
approximately twice the pump
power requirements shown above.
We recommend a 1.15 service factor
be specified when selecting an
electric motor as the power source.
To compute specific pump horsepower requirements, use the Following formula:
Electric HP = (GPM X PSI) / 1460
Gas HP = (GPM X PSI) / 1100
* Engine power varies based on horizontal or
vertical orientation as well as by makes and
model from each manufacturer.
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