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INSTALLATION INSTRUCTIONS - P46W, P46W-HK, & P46HT
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.
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 assis-
tance.
1. The pump should be installed flat on a base
to a maximum of a 15 degree angle of inclina-
tion 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
160
0
F
(P46W), 190
o
F (P46W-HK), or 220
o
F (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.
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
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.