Giant GP8155-R User Manual

GIANT INDUSTRIES LIMITED WARRANTY

Giant Industries, Inc. pumps and accessories are warranted by the manufacturer to be free from defects in
workmanship and material as follows:

1. For portable pressure washers and self-service car wash applications, the discharge manifolds will never
fail, period. If they ever fail, we will replace them free of charge. Our other pump parts, used in portable
pressure washers and in car wash applications, are warranted for five years from the dateof shipment for
all pumps used in NON-SALINE, clean water applications.

2. One (1) year from the date of shipment for all other Giant industrial and consumer pumps.

3. Six (6) months from the date of shipment for all rebuilt pumps.

4. Ninety (90) days from the date of shipment for all Giant accessories.

This warranty is limited to repair or replacement of pumps and accessories of which the manufacturer’s evaluation
shows were defective at the time of shipment by the manufacturer. The following items are NOT covered or will
void the warranty:

1. Defects caused by negligence or fault of the buyer or third party.

2. Normal wear and tear to standard wear parts.

3. Use of repair parts other than those manufactured or authorized by Giant.

4. Improper use of the product as a component part.

5. Changes 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.

Liability under this warranty is on all non-wear parts and limited to the replacement or repair of those products
returned freight prepaid to Giant Industries which are deemed to be defective due to workmanship or failure of
material. A Returned Goods Authorization (R.G.A.) number and completed warranty evaluation form is required
to the return to Giant Industries of all products under warranty consideration. Call (419)-531-4600 or fax (419)-531­6836 to obtain an R.G.A. number.

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MODEL

GP8155-R

WITH INTEGRAL GEARBOX 180o REVERSE

Triplex Ceramic

Plunger Pump

Model Manual

Repair or replacement of defective products as provided is the sole and exclusive remedy provided hereunder and
the MANUFACTURER SHALL NOT BE LIABLE FOR FURTHER LOSS, DAMAGES, OR EXPENSES, INCLUDING
INCIDENTAL AND CONSEQUENTIAL DAMAGES DIRECTLY OR INDIRECTLY ARISING FROM THE SALE OR USE
OF THIS PRODUCT.

THE LIMITED WARRANTY SET FORTH HEREIN IS IN LIEU OF ALL OTHER WARRANTIES OR REPRESENTATION,
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OR MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE AND ALL SUCH WARRANTIES ARE HEREBY DISCLAIMED AND
EXCLUDED BY THE MANUFACTURER.

GIANT INDUSTRIES, INC.

900 N. Westwood Ave.
Toledo, Ohio 43607
[phone]
FAX [phone]
www.giantpumps.com

 Copyright 2008 Giant Industries, Inc.

Contents:

Installation Instructions: page 2
Pump Specifications: page 3
Exploded View/Parts List: pages 4-5
Repair Kits/Tool List:/Torque Specifications page 6
Troubleshooting Chart: page 6
Repair Instructions: pages 7-10
Dimensions: page 11

Updated 4/084/08 GP8155-R.PMD

Warranty Information back page

INSTALLA TION INSTRUCTIONS

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 these pumps are to be operated at temperatures
in excess of 86
to the pump to prevent cavitation.

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.

o

F, it is important to insure a positive head

GP8155-R -- DIMENSIONS - (mm)

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 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.

The service life of the seals is

maximized if a minimal amount of leakage is
present. A few drops of water can drip from
each plunger every minute. Leakage has to be
examined every day; the plunger seals must be
changed should leakage become excessive
(=constant dripping).

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.

IMPORTANT OPERATING CONDITIONS
Failure to comply with any of these condi­tions invalidates the warranty

1. Prior to initial operation, add oil to crankcase so that
oil level is between the two lines on the oil dipstick. DO
NOT OVERFILL.
Use Industrial synthetic gear lube oil (ISO VG 220),

such as Mobil Gear 630, Shell Omala oil 220 or
Texaco Meropa 220.

Crankcase oil should be changed after the first 50 hours
of operation, then at regular intervals of 200 hours or
less depending on operating conditions.

Run pump for one (1) min at ZERO PSI before operating
under pressure.

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. Pump fluid should be filtered
to 300 micron.

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. Run the pump dry approximately 10 seconds to
drain the water before exposure to freezing tempera­tures.

5. The pump and cooling system must
be emptied if there is a danger of frost. Note that
travel wind, for example, can cause water in pumps
fitted on open vehicles to freeze even if the outside
temperature is above freezing point.

6. Inlet pressure not to exceed 29 PSI when using the
integrated oil cooling system. If using a separate
cooling system (max. 29 PSI), the inlet pressure can
be a maximum of 145 PSI.

To empty the cooling circuit, remove the L-joints
(K11) on the pump head (50). Blow out the circuit
liquid at the joint connection (K11/K7) using
compressed air.

The torque tension on the valve casing nuts (49A)
should be checked after approximately 200 operating
hours. Please see page 7 for torque values.

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