background image

INSTALLATION INSTRUCTIONS

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 SAE 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 conditions.

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 installa-
tion.  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
221

0

   F, it is important to insure a positive head

to the pump to prevent cavitation.  See Page 6

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.

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 ob-
tained from the chart on page 3.

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.

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.

2

Summary of Contents for LP121HT

Page 1: ...View page 4 Parts List Kits page 5 Torque Specifications page 5 Operating Instructions page 6 Repair Instructions pages 7 Dimensions back page Warranty Information back page Triplex Ceramic Plunger Pu...

Page 2: ...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...

Page 3: ...ction 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 manufactur...

Page 4: ...EXPLODED VIEW LP121HT PUMP 4PARTS LIST LP121HT PUMPItem Part Description Qty 1 07759 Crankcase 1...

Page 5: ...Oil Seal 3 32 06116 Oil Seal Retainer 3 32A 06119 O Ring 3 33 06117 Backup Seal 3 35 07135 Seal Sleeve 3 36 13291 Leakage Seal 3 37 07139 Seal Case 3 38 07140 O Ring 6 39 07142 Pressure Ring 3 40 131...

Page 6: ...by a rigid pipe Rather use a flexible hose which is not reinforced by steel that is 1 5 to 2 times wider than the inlet port If a booster pump is used the hose is to be attached between the booster pu...

Page 7: ...nkcase cover 4 and bearing cover 14 Loosen connecting rod screws 24 and push the connecting rod plunger base assembly forward as far as possible into the crosshead guides Caution Connecting rods are m...

Page 8: ...anges or modifications made by the customer or third party 6 The operation of pumps and or accessories exceeding the specifications set forth in the Operations Manuals provided by Giant Industries Inc...

Reviews: