2
INSTALLATION INSTRUCTIONS
recommended by Giant Industries, Inc. to further re-
duce system pulsation. Dampeners can also reduce
the severity of pressure spikes that occur in systems
using a shut-o gun. A dampener must be positioned
downstream from the unloader.
5. When viewed from the side of the pump, crank-
shaft rotation is clockwise on pumps with left handed
shafts and counterclockwise on pumps with right
handed shafts. Reverse rotation may be safely
achieved by removing 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 ll and
the oil drain plugs, also. Refer to the repair instruc-
tions as necessary for the proper assembly se-
quence. Required horsepower for system operation
can be obtained from the date located on page 3.
6. Before beginning operation of your pumping
system, remember: Check that the crankcase and
seal areas have been properly lubricated per rec-
ommended 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 ow freely to the inlet of the pump.
Important! If there is a danger of frost, the water
in the pump and in the pump ttings (particularly the
unloader valve) must be emptied. The second dis-
charge port can also be used and the pump run “dry”
for 1-2 minutes for this purpose.
1. Prior to initial operation, add oil to the crankcase so that oil level is between the two lines on the oil dip-
stick. DO NOT OVERFILL.
Use Giant oil - P/N 01153 (20W-50 non-detergent motor oil)
Crankcase oil should be changed after the rst 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 in-
stalled in the discharge of the system.
3. Acids, alkalines, or abrasive uids cannot be pumped unless approval in writing is obtained before opera-
tion from Giant Industries, Inc.
4. Run the pump dry approximately 10 seconds to drain the water before exposure to freezing temperatures.
Installation of the Giant Industries, Inc., pump is
not a complicated procedure, but there are some
basic steps common to all pumps. The follow-
ing information is to be considered as a general
outline for installation. If you have unique re-
quirements, please contact Giant Industries, Inc.
or your local distributor for assistance.
1. The pump should be installed at 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 ow
rate of the pump with no unnecessary restrictions
that can cause cavitation. Teon tape should be
used to seal all joints. If pumps are to be operated
at temperatures in excess of 1600F, it is important to
insure a positive head to the pump to prevent cavita-
tion.
*Make sure that suction pulsation is suciently
dampened - water column resonance mus be
avoided.
3. The discharge plumbing from the pump should be
properly sized to the ow rate to prevent line pres-
sure 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-o 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
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.
Consult the factory for special requirements that must be met if the pump
is to operate beyond one or more of the limits specied on the next page.
