ST-45 PUMP — OPERATING PROCEDURES

Use a 25 ft.hose, or short section, off the pump;and for the balance of the horizontal distance to the vertical line, use steel pipe.This type of installation has been satisfactory on many jobs being pumped in excess of 100 feet high. Line pressures are always less using steel pipe as compared to hose.

Whenpumpingvertically,usingallhose,itisrecommended not to go higher than 50 feet with hose.The hose should be tied off at intervals of 10 feet, if possible. Special attention shouldbegivenwhentieingthehoseoffatthetopasthehose willhaveatendencytostretchwhenfilledwithconcrete.This will increase the possibility of a blockage at the point where the hose is tied off.To avoid this, a long radius of 90 degree elbow is recommended.The suggested place to tie off is on the hose, under the clamp.

NOTE

It is strongly recommended that

steel pipe be used on all vertical

 

 

pumping for safety and conve-

 

nience.

20.Pulsation – A slight pulsation of the hose will always be noticeable near the pump.Excessive pulsation of the hose near the pump is normally due to higher than average line pressures caused by stiff, harsh mixes, or extremely long pumpingdistances.

The use of 2 -1/2”I.D.hose in these extreme cases reduces linepressuresortheadditionofslightamountsofwatertothe mix, if permissible, will permit easier pumping.The use of certain pumping admixtures may help.

Ifexcessivepulsationexistsinthehose,itisadvisabletouse burlap or some means of wear protection under the hose at pointswherethehosemaywearthroughtheoutercover;e.g. over forms, steel or sharp curbs.

21.Snap-JointWhen using Snap-Joint couplings with gas- kets to join hose, see that they are washed clean after each job.Keeping the hose ends clean (heavy duty) is very impor- tant for the best job setup.A thin coat of grease on the rubber gasket or dipping both coupling and gasket in water before coupling the hose will make for easier installation.

22.NewPumps– All new pumps are‘water pressure tested”at the factoryThis procedure permits a thorough inspection of

entire drive system and valving under simulated full load conditions.The pump owner can do the same by making an adapter to couple to the end of the discharge cone: e.g., the use of a standard 2" pipe cap with a 3/8" drilled hole in the center, screwed on to the end of hinged cone or reducer at thepump.

Fillhopperwithwateraftermakingsurethatallsandandrock have been removed from manifold. Operate pump at full throttle and the 3/8" diameter hole restriction will create sufficient back pressure to make thorough inspection of all moving parts.

PAGE 28 — MAYCO ST-45HRM PUMP — OPERATION & PARTS MANUAL — REV. #4 (07/16/04)

Page 28
Image 28
Multiquip ST-45HRM manual Nience

ST-45HRM specifications

The Multiquip ST-45HRM is a highly versatile and robust soil compactor designed for various construction applications. With its advanced engineering and innovative technologies, it sets a new standard in the compaction equipment market. This model is particularly favored for its reliability, durability, and exceptional performance in both small-scale and large-scale projects.

One of the standout features of the ST-45HRM is its powerful engine. Equipped with a high-performance, fuel-efficient diesel engine, it delivers ample power while ensuring reduced fuel consumption. This results in not only lower operational costs but also decreased environmental impact, aligning with today's sustainability goals.

The compactor's dual-directional capability allows for efficient operation in compacting various soil types. Whether tackling granular, cohesive, or mixed soils, the ST-45HRM adapts seamlessly, ensuring optimal performance. Furthermore, it features a unique vibratory system that maximizes compaction efficiency, enabling faster job completion and minimizing the number of passes required.

Operator comfort and safety are paramount in the design of the ST-45HRM. The machine is equipped with an ergonomic operating platform and intuitive controls, allowing for easy maneuverability even in tight spaces. The advanced vibration dampening technology significantly reduces operator fatigue, making long hours of operation more manageable.

Additionally, the ST-45HRM offers impressive maneuverability, thanks to its compact size and precise control. This is particularly beneficial for working in confined areas, such as urban construction sites where space is limited. Its robust construction ensures it can withstand the rigors of challenging job sites while maintaining performance.

Maintenance is made simple with the ST-45HRM. The design allows for easy access to key components, reducing downtime and enhancing productivity. Regular service intervals and the use of quality materials ensure the longevity of the machine, making it a smart investment for contractors looking for reliable and efficient compaction equipment.

In summary, the Multiquip ST-45HRM combines powerful performance, innovative technology, comfort, and ease of maintenance into a single, versatile package. It is an ideal choice for contractors seeking a dependable soil compactor to meet the demands of various construction projects. With its impressive features and capabilities, the ST-45HRM stands out as a leader in the field of soil compaction.