Giant P420A-5100 User Manual
Models
P420A-3100
& P420A-5100
Triplex Ceramic
Plunger Pump
Operating Instructions/
Repair and Service
Manual
Corrossion Resistant Pumps
Contents:
Installation Instructions: page 2
Specifications: page 3
Parts List/Torque Specs: page 4
Exploded View/Kits: 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. 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
0
160
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 shut-off 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 chart on page 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.
2. Pump operation must not exceed rated
pressure, volume, or RPM.
A pressure relief
device must be installed in the discharge of the
system.
Use Giant Oil
3. Acids, alkalines, or abrasive fluids cannot be
Crankcase oil should be changed after the
first 50 hours of operation, then at regular
pumped unless approval in writing is obtained
before operation from Giant Industries, Inc.
intervals of 500 hours or less depending on
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
1500
Specifications
Volume........................................................................................................ Up to 13.0 GPM
Model P420A-3100/5100
Discharge Pressure ..................................................................................... Up to 2000 PSI (at 11 GPM)
Inlet Pressure .............................................................................................. Up to 140 PSI
Stroke.......................................................................................................... 24mm
RPM............................................................................................................ Up to 1460 RPM
Plunger Diameter........................................................................................ 25mm
Temperature of Pumped Fluids .................................................................. Up to 160
o
F
Inlet Ports.................................................................................................... (2) 1" BSPP
Discharge Ports........................................................................................... (2) 3/4" BSPP
Shaft Rotation................................................................................ Top of pulley towards fluid end
Crankshaft Diameter................................................................................... 28mm
Key Width................................................................................................... 8mm
Shaft Mounting........................................................................................... Either side
1
Weight......................................................................................................... 36lbs. 11oz.
Crankcase Capacity .................................................................................... 30fl.oz.
Volumetric Efficiency @ 1460 ................................................................... 0.95
Mechanical Efficiency @ 1460 .................................................................. 0.86
Consult the factory for special requirements that must be met if the pump is
to operate beyond one or more of the limits specified above.
NOTES:
1
In order to drive the pump from the side opposite the present shaft
extension, simply remove the valve casing from the crankcase and
rotate the pumps 180 degrees to the desired position. Be certain to
rotate the seal case (item #20) as well, so that the weep holes are
down at the six o'clock position. Exchange the oil fill and the oil
drain plugs, also. Refer to the repair instructions as necessary for
the proper assembly sequence.
P420A-3100/5100
P420 HORSEPOWER
HORSEPOWER REQUIREMENTS
REQUIREMENTS
1700
PSI
2000
PSI
RPM GPM
785 7.0 4.8 7.2 8.2 9.6
900 8.0 5.5 8.3 9.4 11.0
1010 9.0 6.2 9.3 10.5 12.4
1120 9.9 6.9 10.3 11.7 13.7
1240 11.0 7.6 11.4 12.9 15. 2
1460
1000
PSI
PSI
13.0 8.9 13.4 15.2
SPECIAL NOTE:
The theoretical gallons per revolution
(gal/rev) is 0.0089.
To find specific outputs at various RPM,
use the formula: GPM = 0.0089 x RPM
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 horse
power requirements, use the
following formula:
HP = (GPM X PSI) / 1450
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