Multiquip ST-45HRM Pumping Tips, Admixtures, Priming the Pump and Delivery System with Slurry

Page 25

ST-45 PUMP — OPERATING PROCEDURES

WARNING

Common sense tells us that if you drive a truck into a brick wall, something is going to be damaged.The same holds true with your concrete pump. If you repeatedly pull the throttle all the way out and try to force your pump to push through blockages due to

separation of material in the hose or manifold, you will soon have breakdowns and costly repairs which are not covered under warranty.If a blockage occurs, find where it is and clear it before further pumping.DO NOT increase the engine speed to clear the blockage. Increasing the engine speed will only compound the problem.

WARNING

It will be necessary at times to move your pump from one job site location to another. Before moving the pump, make sure to pump the remaining concrete out of the hopper. Moving the pump with a full hopper of concrete can cause severe damage or breakage of the axle and axle springs, excess

strain and pressure on the hub and bearing assembly.

Pumping Tips

The effects of heat and excessive time on concrete:

7.Hot concrete, commonly referred to as a hot load, is concrete that has been in the redi-mix truck in excess of 2 to 3 hours. On a hot day, this amount of time is even less. A brief explanation of why heat and time affect concrete:

8.Concrete starts setting by drying up through a chemical reaction.Thecatalysttothisreactionisheat.Whenpumping a hot load, it is important to remember that when you have to stoppumpingforanyreason,addwatertotheconcreteinthe hopper and hand mix and move concrete in the hose every 5 minutes. If theshutdown time becomes toolong,wash out immediately.

Admixtures:

9.Remixtures that are designed into the concrete mix by the redi-mix company or anarchitectural engineering company. This section lists common admixtures and a brief explana- tion of their functions:

A.Pozzolith 300 – or the equivalent acts as a water retarderandalubricant.Onaleanmix,longpushes,stiff mixes, and vertical pushes, Pozzolith 300R helps pumpability.

B.MBVR – air entraining, acts as a lubricant.

C.Calcium Chloride – commonly referred to as C.C., is used as an accelerator. When pumping a load with calcium chloride, it is recommended that you wash out if the waiting time between delivery trucks becomes too long.

D.Super Plasticizers – acts as an accelerator.The concrete will look very wet after the super plasticizer is added, but will begin to set up very fast.Wash out immediately if you do not have a truck waiting. Super plasticizers are used mainly on commercial jobs.

E.Red Label – actsasawaterretarderandanaccelerator. Red label will be used mainly on commercial jobs.

F.Fly Ash – is used to help increase the strength of the concrete and decrease the cement content per yard. This is one of the most common admixtures used.

All admixtures will be shown on the

NOTE redi-mix concrete ticket.Before start- ing the pumping job, ask the driver of the redi-mix truck to see the concrete ticket and note the admixtures that exist and take the proper action.

10.Whenpumpinglongdistanceorpumpingstiffmixes,youcan expectadropinvolumecomparedtoshorterlinesandwetter mixes due to the change in valve efficiency or cavitation.

11.Leakingmanifoldsealsorhosecouplinggasketswhichleak watercancauseseparationandsubsequentjammingatthat point.

Priming the Pump and Delivery System with Slurry

12.It is CRITICAL to the successful operation of a concrete pump that the manifold and all delivery hose, pipe and elbows are coated with a film of lubrication BEFORE you attempt to pump concrete. Failure to properly prepare the pump and system will result in a “dry pack” of concrete, blocking the shuttle valve tube or delivery line.

A.With the entire delivery system connected to the pump. Except for the first hose.Pour 5 gallons of water into the second hose and push in your clean out ball and reconnect.This will help hold back the prime.

B.There are several things you can use for the prime. A few examples are Cement and lime at a 50/50 mixture, slick pac, bentonite clay.

MAYCO ST-45HRM PUMP — OPERATION & PARTS MANUAL — REV. #4 (07/16/04) — PAGE 25

Page 24 Page 26
Image 25
Page 24 Page 26
Contents Model ST-45HRM Proposition 65 Warning Heres HOW to GET Help Mayco ST-45HRM Structural Concrete Pump Wilmington Ave Carson, CA Parts Ordering ProceduresMultiquip INC ST-45 Pump Pump Specifications ST-45 Pump SpecificationsST-45 Pump Engine Specifications Engine SpecificationsST-45 Structural Concrete Pump Dimensions ST-45 Pump DimensionsSeriously injured if you do not follow directions ST-45 Pump Safety Message Alert SymbolsAlways wear approved respiratory protection ST-45 Pump Safety Message Alert SymbolsNever operate the pump in an explosive General SafetyST-45 Pump Rules for Safe Operation Maintenance SafetyTransporting TowingEmergencies BatteryMachine Safety Decals ST-45 Pump Operation and Safety DecalsST-45 Pump Operation and Safety Decals Operation Hand Signals ST-45 Pump Important Hand SignalsConcrete Mix Design ST-45 Pump General InformationRegional Differences ST-45 Pump General InformationPumping Cycle ST-45 Pump HOW IT WorksMajor Pump Components ST-45 Pump Pump ComponentsST-45 Pump Pump Components ST-45 Pump Control BOX Components Initial Servicing ST-45 Pump Engine ComponentsOperating Suggestions ST-45 Pump Operating ProceduresGetting the concrete to flow through NotremotelyAdmixtures Pumping TipsPriming the Pump and Delivery System with Slurry Shuttle Tube Inspection Procedure Reverse Pumping ProcedureStop the pump.Switch off the engine Clearing Concrete BlockageChip the concrete out of the reducer with the pry bar Carefully knock the end of the hose away from the reducerNience ST-45 Pump Inspection Read safety instructions at the begin- ning of manualFuel Check Before StartingEngine OIL Check ST-45 Pump InspectionMake sure pump/engine is placed on level ground Hydraulic OilRear Stabilizer Stand Hydraulic Oil Filler HoleEmergency Stop Switch ST-45 Pump Initial START-UP ProcedureIgnition Switch StartingStrokes within 1 minute Control SwitchRunning Engine SpeedCooling FAN Pressure TestOptional Radio Remote Control ST-45 Pump Initial START-UP ProcedureCylinder Lubrication BOX ST-45 Pump -TOWING Guidelines Recommended MaintenancePumpTrailerVehicle Connection Towing Applications ST-45 Pump -TOWING GuidelinesMatch the size of the tire ST-45 Pump -TRAILER Safety GuidelinesTires/Wheels/Lug Nuts ST-45 Pump -TRAILER Safety GuidelinesTiresWear/Inflation SuspensionLug Nut Torque Requirements ST-45 Pump -TRAILER Safety GuidelinesStart all wheel lug nuts by hand Towing Information ST-45 -TOWING InformationUSE 2 Ball only Backing UP ST-45 -TOWING InformationBack the trailer up TrailerTail Lights Wiring Diagram ST-45 Pump Wiring Diagram Tail LightsCleaningthe Pump and Delivery System ST-45 Pump Maintenance PumpHydraulic OIL System Maintenance ST-45 Pump Maintenance PumpEngine Hatz Model 3M41 57HP Diesel Battery Maintenance ST-45 Pump Maintenance PumpBrake System Lubricate the hitch ball withTo set maximum pump pressure ST45 Pressure Setting SequenceST45 Accumulator Circuit Cleaningthe Lubrication BOXChecking Accumulator Bladder Pressure Pilot Relief Valve Cartridge Adjustment Oil prior to installation Cylinder CUP Replacement ProcedureSize and type of aggregate Type of concrete being pumped Wear Plate Installation Wear Plate and Ring Replacement ProcedureInstall the two cylinder O rings Hopper Interior Assy, Item Wear Ring installationExtended Storage Instructions Wheel BearingsPage Hydrauilc Hose Connections ST-45 Pump Hydraulic Hose ConnectionsST-45 Pump Hydraulic Hose Connections ST-45 Pump Hydraulic Hose Connections Manifold Ports ST-45 Manifold Port LocationsAppendix ST-45 Pump Concrete MIX Information Appendix ST-45 Pump Concrete MIX Information SlumpTest 1/3 Full Appendix ST-45 Pump Slumptest ProcedureEngine Troubleshooting ST-45 Pump Troubleshooting EngineHydraulic System Troubleshooting ST-45 Pump -TROUBLESHOOTING Hydraulic SystemST-45 Pump -TROUBLESHOOTING Electrical System Brake System Troubleshooting ST-45 Pump -TROUBLESHOOTING Brake SystemPage Items Found In the Items Number Column ST-45 Pump Explanation of Code in Remarks ColumnST-45 Structural Concrete Pump ST-45 Suggested Spare PartsPart numbers on this Suggested Shotcrete System Appendix ST-45 Pump Recommended Shotcrete SystemGeneral recommendations REDUCER, 3x2.5x36 H-D EndsVibrator on the reducer by the pool improves pumpability Material has Passedthroughthe Entire Hose Length Air passages cleanPart Name QTY Remarks ST-45 Pump Decal Placement TBD DECAL, Hopper Rexmixer ST-45 Pump Axle Assy Part Name QTY ST-45 Pump Brakeline Assy TBD NUT Lock Washer ST-45 Pump Hopper Assy REMIXER, Shaft ST-45 Pump Hopper Attachment Assy BOLT, HEX ST-45 Pump Hopper Attachment AssyST-45 Pump Hopper Interior Assy BOLT, HEX Head 1/2 NC X 1 1/4 NUT Lock 5/8ST-45 Pump Shuttle Cylinder Assy Thrust Washer Fuel and Hydraulic Tank Connections Assy ST-45 Pump Fuel and Hydraulictank Connections Assy ST-45 Pump Fuel and Hydraulictank Assy ST-45 Pump Fuel and Hydraulictank Assy ST-45 Pump Front Cover Assy ST-45 Pump Front Cover Assy ST-45 Pump Heat Exchanger Assy ST-45 Pump Heat Exchanger Assy ST-45 Pump Engine and Frame Assy ST-45 Pump Engine and Frame Assy ST-45 Pump -THROTTLE and Water Filter Assy Bracket ST-45 Pump Hydraulic Pump Assy ST-45 Pump Hydraulic Pump Assy ST-45 Pump Lubrication Pistons Assy ST-45 Pump Lubrication Pistons Assy Sistema Electrico Hatz Assy ST-45 Pump Electrical System Assy ST-45 Pump Accumulator Assy Accumulator 1 Gallon ST-45 Pump Manifold Assy Test Port ST-45 Pump Remixer Control Assy Valve Remix W/LEVER ST-45 Pump Battery Assy Battery Holder Frame Grease Points ST-45 Pump Lubrication PanelST-45 Pump Lubrication Panel ST-45 Pump -TAILLIGHT Assy Tail Light Assy ST-45 Pump Control BOX Interior Door Assy Relay , Small ST-45 Pump Control BOX Mounting Assy 492366 Screw HHC 5/16-18x1-1/2 EM510703 ST-45 Pump Control BOX Assy Tachometer ST-45 Pump Control BOX Doorwiring Diagram ST-45 Pump Control BOX Interiorwiring Diagram ST-45 Pump -TERMINAL Blockwiring Diagram ST-45 Pump Control BOX Electrical Schematic ST-45 Pump Control BOX Electrical Schematic TB1 Part ID Description Quantity ST-45 Hydraulic DiagramST-45 Optional Radio Control Freightpolicy Terms and Conditions of Sale PartsMechanical Drive Models Mayco PumpwarrantyHydraulic Drive Models Your Local Dealer is

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.
Top Page Image Contents