Stow DFG Series manual Tungsten Carbide Grinding Block, Scarifier Blocks

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ASSEMBLY INSTRUCTIONS/OPERATIONS

a)The C06 and C10 coarse grade stones are the most popular utilized stones and result in maximum material removal rates. They are utilized for general grinding and the removal of trowel marks, high spots and rough sections on concrete surfaces. The average service life is approximately 4 to 10 hours.

b)The C24 medium grade stone will result in lower material removal rates. It is utilized for finer finish grinding of concrete and rough grinding on terrazzo and other types of stone floor configurations. The average service life is approximately 6 to 10 hours.

c)The C80 fine grade stone will result in still lower material removal rates. It is utilized for polishing concrete and medium grinding on terrazzo and other types of stone floor configurations with a water/slurry mixture only. The average service life is approximately 8 to 20 hours.

d)The C120 super fine grade stone will result in the lowest material removal rates. It is utilized for final polishing on terrazzo and other types of stone floor configurations with a water/slurry mixture only. The average service life is approximately 40 to 75 hours.

Tungsten Carbide Grinding Block

This multi-accessory attachment is most often utilized on larger concrete grinding projects where increased production and service life are required. The block utilizes tungsten carbide balls approximately 1/16 inch diameter that are deposited in a molten matrix material during the manufacturing process at a controlled rate. The end effect is a multi layer deposit of tungsten carbide balls in the matrix material. As the softer matrix material wears with use, it exposes a new layer of fresh tungsten carbide balls to continue the grinding process. The tungsten carbide grinding block is considerably more aggressive than the C10 silicon carbide grinding stone. With the ability to renew itself during usage, the normal life expectancy for this accessory can approach several hundred hours. The nominal dimensions for the tungsten carbide grinding block is 2" x 2" x 4" and is secured to the machine with a plastic wedge. FIGURE 5.

FIGURE 5

Scarifier Blocks

These multi-accessory attachments are comprised of flails and spacer washers secured in a rigid steel case. FIGURE 6. Rotation of the two multi-accessory discs causes the flails to impact against the work surface with a variety of results. Scarifier blocks are secured to the machine with plastic wedges.

Several factors directly affect the selection of a flail design for a specific job application:

a)The type and amount of material to be removed from the work surface. Materials of higher yield and tensile strengths along with the actual volume of material to be removed will generally be the first factors under consideration.

b)Purchase cost versus service life. The original purchase cost of plain, heat-treated steel flails must be compared against the substantially higher costs of the tungsten carbide insert flails. In turn, these costs must be compared to anticipated service life. All flails will eventually wear to the point of requiring replacement. The amount of unproductive time spent to replace worn flails on a job can be substantially greater than the actual replacement cost of many flails. It then becomes a balance between purchase cost, productivity, service life and labor cost.

c)Surface finish and texture. The finest grained surface finish available from the scarifying process is comparable to a "swept or broomed" like finish. If a smooth, flat finish is desired, the scarifying process must be followed with a grinding or polishing type process. Many job requirements may call for large amounts of material to be removed, but followed with additional specifications requiring a finer surface finish or texture. Many times these jobs dictate the use of an aggressive flail configuration because of productivity and cost considerations. Less aggressive flail configurations can then be utilized for the final finishing sequence. Generally speaking,

DFG-SERIES SURFACE GRINDERS

OPERATION AND PARTS MANUAL REV #3 (07/13/06)

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Contents Electric Gasoline Page Table of Contents Table of Contents Page Here’s how to get help Parts Ordering ProceduresStow Construction Equipment Page Page Operator Instructional Data Sheet Safety Precautions Safety Precautions Operation Surface Grinder MAINTENANCE, Repair and StorageSafety Precautions Removing the Surface Grinder from the Pallet AssemblyApplication All Models Installing the SG24-1000 Safety and Dust Shield Assembly KIT Filling the DFG/G Series Engine Fuel Tank Before Starting the EngineFilling the Engine Crankcase with OIL Applications DFG/G Surface GrinderGrinding Stones MULTI-ACCESSORY Attachments and ApplicationsOperation Theory of OperationScarifier Blocks Tungsten Carbide Grinding BlockStar Flail Cost 1 Productivity 3 Service LifeBeam Flail Spacer Washer Cost 1 Productivity 5 Service LifeCost Productivity Service Life Pentagonal FlailScarifier Block Bushing Wire brushesSCRAPE-R-TACH Industrial Floor Coatings Removal System Floor BrushesAssembly INSTRUCTIONS/OPERATIONS Follow all safety precautions for the safety solvent Diamond Segment Block Assembly INSTRUCTIONS/OPERATIONS From the Counterrotating Discs Assembly INSTRUCTIONS/OPERATIONS Adjusting the Operator Handle HEIGHT. Application All Models Assembly INSTRUCTIONS/OPERATIONS Assembly INSTRUCTIONS/OPERATIONS Operating the Surface Grinder on the Jobsite Fiure Result in Property Damage AND/OR Personal InjuryAssembly INSTRUCTIONS/OPERATIONS Application All Models Early Age Grinding Stopping the DFG/G Series Gasoline Powered Surface GrinderDefinitions of floor flatness and levelness Defined Versus Random Traffic Patterns How to Define Surface RegularityTR 34 tolerances for defined traffic floors Assembly INSTRUCTIONS/OPERATIONS Maintenance/Service MAINTENANCE/SERVICEPreventative Maintenance Check LIST. Application All Models Observe all applicable safety precautions for the solvent MAINTENANCE/SERVICE Checking V-BELT Tension and Alignment MAINTENANCE/SERVICE Lubrication Requirements Engine Service Electric Motor ServiceTroubleshooting TroubleshootingAccelerated Bearing Wear AND/OR Failure Operational PROBLEMS. Application All ModelsUneven MULTI-ACCESSORY Attachment Wear Accelerated V-BELT WearStorage StorageTypical Operator Handle Height SpecificationsVacuum Cleaner Connection Diameter Maximum Grinding WidthPage Remarks Part NameXxxxx only Not Used on Units Gasoline Engine Units Electric Motor Model Suggested Spare PartsQty Description Operator Handle ASSY. Electric Operator Handle ASSY. ElectricCABLE, Short HANDLE, Operator UniversalHP Motor only CABLE, LongOperator Handle ASSY. Gasoline Operator Handle ASSY. GasolineLEVER, Throttle CONTROL, W/CABLE & Knob CABLE, ThrottleKNOB, Throttle Control QTY RemarksElectric Motor Assy Electric Motor AssyWASHER, Flat 5/16, Plated MOUNT, Electric MotorHP 50 HZ Motor SCREW, CAP 5/16-18 UNC X 1 PlatedGasoline Engine Assy Gasoline Engine AssyCAP, OIL Drain ENGINE, Honda 11 H.PMOUNT, Gasoline Engine CLUTCH, Pulley AssyWheel Assy Wheel AssyWASHER, Flat ¾ Plated ARM, SwingWheel AXLE, PlatedTransmission Assy Transmission AssyWASHER, Lock 5/16 Plated FRAME, MainCOVER, Transmission BEARING, FlangeHead Assy Head AssyDISC, Mounting DISC, MULTI- Accessory LHDISC, MULTI- Accessory RH BAR, MountingSafety and Dust Shield Assy Safety and Dust Shield AssySTRAP, Skirt Skirt AssemblySKIRT, Grinder WASHER, Fender 1/4 , PlatedScarifier Assy Scarifier AssyWEDGE, Plastic HousingBushing NUT, HEX 3/8 UNC, Nylock PlatedSCRAPE-R-TACH Assy INSERT, Tungsten Carbide HOLDER, InsertMOUNT, Rubber SpacerGrinding Block Assy General Purpose BlockRing Aggress GrindingDecals DecalsDECAL, Throttle Sfdclsdp DECAL, Stow Large Decals Part Name QTY RemarksDECAL, Warning DECAL, OperationFreight Policy Special Expediting ServicePRICING, Rebates Specifications Payment TermsPage FAX Heres HOW to GET Help
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