Giant p46w User Manual
Triplex Ceramic
Plunger Pump
Operating Instructions/
Models
Repair and Service
Manual
P46W, P46W-HK & P46HT
Updated 3/02
Contents:
Installation Instructions: page 2
Pump Specifications: page 3-4
Kits/Torque Specs: page 5
Pump Mounting Selection
Guide: page 5
Exploded View: page 6
Parts List: page 7
Trouble Shooting: page 8
Recommended Spare
Parts List: page 8
Repair Instructions: page 9-11
Dimensions: back page
Warranty Information: back page
INSTALLATION INSTRUCTIONS - P46W, P46W-HK, & P46HT
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
1600F (P46W), 190oF (P46W-HK), or 220oF (P46HT) it is
important to insure a positive head to the pump to
prevent cavitation. See NPSHR curve for P46HT on
page 4.
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 charts on pages 3-4.
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 Giant synthetic or SAE 90 Gear Oil
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
Crankcase oil should be changed after the first 50 hours
temperatures.
of operation, then at regular intervals of 500 hours or
less depending on operating conditions.
2
I
745
2.0
1.4
2.1
2.3
3.0
910
2.5
1.7
2.6
2.9
3.8
1140
3.1
2.1
3.2
3.6
4.7
3.6
2.5
3.7
4.2
5.4
3.9
2.7
4.0
4.5
5.9
Specifications
Model P46W/P46W-HK
Volume ........................................................................................................ Up to 3.9 GPM
Discharge Pressure .................................................................................... 2200 PSI
Inlet Pressure .............................................................................................. -4.35 - 140 psi
Maximum Crankshaft Rotation Speed ........................................................ Up to 1420 RPM
Stroke .......................................................................................................... 14.1mm
Crankcase Oil Capacity .............................................................................. 8 fl. oz.
Temperature of Pumped Fluids ................................................................... Up to 220
Plunger Diameter ........................................................................................ 18mm
Inlet Ports ................................................................................................... (2) 1/2" BSP
Discharge Ports .......................................................................................... (2) 3/8" BSP
Pulley Mounting .......................................................................................... Either Side
Shaft Rotation ................................................................................ Top of pulley towards Head
Weight ......................................................................................................... 16 lbs.
Crankshaft Diameter .................................................................................. 18mm
Volumetric Efficiency @ 1420 .................................................................... 0.96
Mechanical Efficiency @ 1420 .................................................................. 0.80
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.
o
F
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.
P46W & P46W-HK PULLEY SELECTION &
HORSEPOWER REQUIREMENTS
PUMP
PULLEY
7.75" 3.55"
7.75" 4.25"
7.75" 5.25"
7.75" 5.95" 1305
7.75" 6.45" 1420
MOTOR
PULLEY
RPM GPM 1000 PSI 1500 PSI 1700 PSI 2200 PS
HORSEPOWER INFORMATION
Horsepower ratings shown are the power requirements for the pump. Gas engine power outputs must
be approximately twice the pump power requirements
shown above.
We recommend that a 1.1 service factor be specified
when selecting an electric motor as the power source.
To compute specific pump horsepower requirements,
use the following formula:
(GPH X PSI) / 1460 = HP
3
I
385
0.9
54.0
0.1
0.2
0.4
0.6
676
1.6
96.0
0.2
0.4
0.7
1.0
900
2.1
123
0.3
0.6
0.9
1.3
Specifications
Model P46HT
Volume ........................................................................................................ Up to 123 GPH (2.1 PGM)
Discharge Pressure .................................................................................... 900 PSI
Inlet Pressure .............................................................................................. See NPSHR curve below
Maximum Crankshaft Rotation Speed ........................................................ 900 RPM
Plunger Diameter ........................................................................................ 18mm
Crankcase Capacity .................................................................................... 8 fl. oz.
Temperature................................................................................................ Up to 220
Inlet Ports ................................................................................................... (2) 1/2 BSP
Discharge Ports .......................................................................................... (2) 3/8 BSP
Pulley Mounting .......................................................................................... Either Side
Shaft Rotation ............................................................................................. Top of pulley towards head
Weight ......................................................................................................... 16 lbs.
Crankshaft .................................................................................................. 18 mm
23
20
16
13
o
F
10
6.6
3.3
NPSHR(FT-HEAD) Viscosity = 1 Centipoise
0
200 400 600 800 1000 1200 1400 1600 1700
R
NPSHR Chart
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.
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.
P
M
HORSEPOWER INFORMATION
Horsepower ratings shown are the power requirements for
the pump. Gas engine power outputs must be approximately twice the pump power requirements shown above.
We recommend that a 1.1 service factor be specified when
selecting an electric motor as the power source. To compute
specific pump horsepower requirements, use the following
formula:
(GPH X PSI) / 1440 = HP
P46HT PULLEY SELECTION & HORSEPOWER
PUMP
PULLEY
7.75" 2.0"
7.75" 3.25"
7.75" 4.25"
MOTOR
PULLEY
REQUIREMENTS
RPM GPM GPM 200 PSI 400 PSI 600 PSI 900 PS
4
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