INSTALLATION 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 pumps are to°be operated at temperatures in excess of 1400 F, it is important to insure a positive head to the pump to prevent cavita- tion.

3.The discharge plumbing from the pump should be properly sized to the flow 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-off 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 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 un- loader.

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 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.

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 crankcase so that the oil level is between the two lines on the oil dipstick. DO NOT OVERFILL. SAE 80 Indus- trial Gear oil may be used. Crankcase oil should be changed after the first 50 hours of operation, then at regular intervals of 200 hours or less de- pending on operating conditions.

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.

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Giant GP7128 service manual Installation Instructions, Important Operating Conditions
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GP7128 specifications

The Giant GP7128 is a notable addition to the world of high-performance bicycles, designed for cycling enthusiasts who seek reliability and versatility in both urban settings and rugged terrains. This model embodies the commitment to quality and innovation that Giant is known for, making it a popular choice among riders of all levels.

One of the main features of the Giant GP7128 is its lightweight aluminum frame, crafted from high-grade materials to ensure durability without sacrificing performance. This frame design contributes to an agile riding experience, ideal for both commuting and recreational cycling. The geometry of the GP7128 is carefully engineered to provide a comfortable riding position, minimizing strain during long rides while maximizing control and responsiveness.

Equipped with a Shimano drivetrain, the GP7128 features a smooth-shifting gear system that allows cyclists to effortlessly navigate various inclines and terrains. The combination of a wide gear range offers optimal efficiency, ensuring riders can maintain speed and cadence regardless of the conditions. The bike's braking system is also noteworthy, featuring both front and rear disc brakes that provide reliable stopping power in all weather scenarios, enhancing safety on the road.

The Giant GP7128 boasts advanced tire technology, with puncture-resistant tires designed to withstand rough surfaces and sharp objects. This feature not only enhances the bike’s longevity but also gives riders peace of mind on longer rides. The wheels are built to be robust yet agile, allowing for quick acceleration and stable handling, making the bike a versatile option for city commuting or weekend adventures.

Another impressive aspect of the GP7128 is its ergonomic handlebars and saddle design. These components are specifically tailored to reduce fatigue, promoting a more enjoyable riding experience even on longer distances. Additionally, the bike is compatible with a range of accessories, including fenders and racks, making it an ideal choice for those looking to customize their ride for various purposes.

In summary, the Giant GP7128 stands out with its lightweight aluminum frame, reliable Shimano drivetrain, powerful disc brakes, and puncture-resistant tires, along with ergonomic design features. This bike represents a blend of performance, comfort, and practicality, appealing to both casual riders and serious cyclists seeking a reliable vehicle for their outdoor pursuits. Whether navigating city streets or exploring nature trails, the GP7128 is equipped to deliver an exceptional cycling experience.
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