GIANT GX Series Horizontal Pressure Consumer Pump Instruction Manual

GIANT GX Series Horizontal Pressure Consumer Pump

INSTALLATION INSTRUCTIONS

Installation of the Giant Industries, Inc., the 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. The maximum inlet fluid temperature is 80 F.
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. Before beginning the 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.

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 CONDITION

Failure to comply with any of these conditions invalidates the warranty.

1. Prior to initial operation, Check for proper oil level. DO NOT OVERFILL.
   Use Giant Oil – P/N 01153 (20W-50 non-detergent motor oil)
   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. Since it is difficult to determine the oil level in the pump, check for signs of oil leakage around the pump before and during operation. The best areas to check are between the manifold and the crankcase and between the adapting plate and the engine / motor mounting surface. Lastly, you can see if there is any leakage around the vent cap (on the top of the pump). If everything looks okay, continue to use the pump. At least once per year (or every 200 hours), remove the oil from the pump and replace with the required amount of oil.

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 for approximately 10 seconds to drain the water before exposure to freezing temperatures.

NOTE:
Contact Giant Industries for Service School Information. Phone: (419)-531-4600

Specifications

1. A 25 PSIG (2 Bar) minimum inlet pressure is required.
2. The pump itself can be driven in either direction of rotation; however, the cooling fan on TEFC motors must always be positioned so that the cooling air is drawn from the non-drive end of the motor towards the pump.

HORSEPOWER RATINGS:

The rating shown are the power requirements for the pump. Gas engine power outputs must be approximate twice the pump power requirements shown above. We recommend a 1.15 service factor be specified when selecting an electric motor as the power source. To compute specific pump horsepower requirements, use the following formula:

• Electric HP = (GPM X PSI) / 1450
• Gasoline HP = (GPM X PSI) / 1100

GX SERIES PARTS LIST

• When ordering 06310A, please order 17026A which includes 06300A, 07805, and 06294
• When ordering 06331A, please order 17032A which includes 06331A, 06301A, and shaft ring.
• Optional Non-Handle Model – (Item 23) o-ring p/n 12007, (Item 26) o-ring p/n 07937, (item 33) adjusting screw p/n 06323, (item 34) adjusting screw plug p/n 06324
• Optional Non-Injector Model – (item 41) kick back valve o-ring p/n 12326, (item 42) kick back valve cone p/n 12325 (item 43) kick back spring p/n 12328, (item 47) kick back valve retainer p/n 12340
• When ordering 06326A, please order 17020A which includes 06326A, 06301A, and shaft ring.
• When ordering 06419A, please order 17171A which includes 06419A, 06159A, and 06301A.

MOUNTING ACCESSORIES

GX SERIES TORQUE SPECIFICATIONS

GX Series EXPLODED VIEW

REPAIR INSTRUCTIONS – GX SERIES

1. With a 14mm socket wrench, remove the three discharge valve plugs (22). Inspect the valve plug o-rings (23) for wear, and replace as necessary.

2. Remove the valve spring (18) and valve cone (36) from the manifold (35). Inspect the parts for wear and replace as necessary.

3. With a crescent wrench, remove the kickback valve spring retainer (47). Inspect the o-ring (46) for wear and replace as necessary. Remove the kick-back valve spring (43), kickback valve cone (42), and the O-ring (41) from the manifold (35). Inspect the parts for wear and replace as necessary.

4. With a 19mm wrench, remove the adjusting screw plug (34). Unscrew the adjusting screw (33) from the adjusting screw plug (34). Inspect the o-rings (23 & 26) for wear and replace as necessary.

5. Remove the adjusting spring (31), pressure spring (32), washer (30) and bypass valve ball (29) from the manifold (35). Inspect the parts for wear and replace as necessary.
   Optional pump without handle – exclude items (52, 53, 54, 55, 56).

6. With a 14mm socket wrench, remove the guide plug (22) and O-ring (23).

7. Remove the piston (24), O-ring (26), and backup rings (25). Remove the bypass valve seat (28). Inspect the parts for wear and replace as necessary. IMPORTANT! Make sure that the shoulder on the bypass valve seat (28) is facing the discharge plug (22).

8. Next, remove the four manifold bolts (40) with a 6mm Allen wrench.

9. Remove the suction flange (39) and flange o-ring (38). Inspect the o-ring for wear and replace as necessary.

10. Tap the back of the manifold (35) with a rubber mallet to dislodge, and slide off the plungers. (8). Take note of the position of the discharge port so as to place the manifold in the same position during reassembly.

11. Remove the guided p-valve, (19), valve springs (18), v-sleeves (21), and pressure rings (20). Inspect for wear and replace as necessary. Remove the spacer ring (17) from the plungers (8).

12. If the crankcase oil seals (15) are to be replaced, they can be removed by prying loose with a screwdriver. Take care not to make contact with the plunger (8) and pry out the oil seals from their housing. Seals should not be reinstalled until after step #13.

13. Reassemble in reverse order. Fill the crankcase with the proper amount of oil (see specifications page 3). The pump is now ready for operation.

GX and HR Pump Part Numbering System

For example, a GXV2525-112 is a GX pump that produces 2.5 GPM @ 2500 PSI, has an injector with a 2.1mm Orifice, 1/2” thermal relief valve, and 7/8” wobble plate bore.

GX Series Dimensions inches

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. Five (5) years from the date of shipment for all pumps used in portable pressure washers with NON-SALINE, clean water applications.
2. Two (2) years from the date of shipment for Giant pumps used in car wash applications.
3. One (1) year from the date of shipment for all other Giant industrial and consumer pumps.
4. Six (6) months from the date of shipment for all rebuilt pumps
5. 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 the material. A Returned Goods Authorization (R.G.A.) number and completed warranty evaluation form is required prior to the return to Giant Industries of all products under warranty consideration. Call (419)-531-4600 or fax (419)-531-6836 to obtain an R.G.A. number. 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.

WARNING: This product might contain a chemical known to the State of California to cause cancer, and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov

GIANT INDUSTRIES, INC., 900 N. Westwood Ave., Toledo, Ohio 43607 PHONE 419-531-4600, FAX 419-531-6836, www.giantpumps.com
© Copyright 2022 Giant Industries, Inc.

References

• Giant Pumps
• P65Warnings.ca.gov

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