2
INSTALLATION INSTRUCTIONS - P46W, P46W-HK, & P46HT
4. Use of a dampener is necessary to minimize
pulsation at drive elements, plumbing, connec-
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 obtained from the
charts on pages 3-4. The open end shaft must
be covered by the shaft protector (17).
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
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 160
0
F
(P46W), 195
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 crank-
case so that oil level is between the two lines on
the oil dipstick. DO NOT OVERFILL.
Use Giant Oil # 01154 or the
equivalent SAE 80W - 90
Industrial 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 condi-
tions.
2. Pump operation must not exceed rated
pressure, volume, or RPM. A pressure
relief device must be installed in the dis-
charge 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.
Содержание P46HT
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