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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 instal-
lation. 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 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
F, it is important to insure a positive head
0
to the pump to prevent cavitation.
Make sure that suction pulsation is sufficiently
dampened - water column resonance must be
avoided.
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, connec-
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 crank-
case so that oil level is between the two lines
on the oil dipstick. DO NOT OVERFILL.
Use Giant 20W-50 oil (p/n 01153)
Crankcase oil should be changed after the
first 50 hours of operation, then at regular inter-
vals of 500 hours or less depending on operat-
ing 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.
INSTALLATION INSTRUCTIONS
2
tions, 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 pulsa-
tion. 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 desig-
nated 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 ob-
tained from the charts on pages 3-9.
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. Cavi-
tation 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.
Important! If there is a danger of frost, the
water in the pump and in the pump fittings
(particularly the unloader valve) must be emp-
tied. The second discharge port can be used
and the pump run "dry" for 1-2 minutes for this
purpose.
3. Acids, alkalines, or abrasive fluids cannot
be pumped unless approval in writing is ob-
tained before operation from Giant Industries,
Inc.
4. Run the pump dry approximately 10 sec-
onds to drain the water before exposure to
freezing temperatures.
5.
If there is danger of frost, the
water in the pump and in the pump fittings (par-
ticularly the unloader valve) must be emptied.
The second discharge port can also be used
and the pump run "dry" for 1-2 minutes for this
purpose.
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