Stow DFG Series manual Troubleshooting

Page 47

TROUBLESHOOTING

Troubleshooting

ELECTRIC MOTOR.

Application: DFG/E Series SURFACE GRINDER.

MOTOR FAILS TO START

ON/OFF switch in the OFF position. Turn the switch to the ON position.

Improper voltage selection. Determine the available voltage value from the power source. Move the voltage selection switch located on the motor to the proper selection.

SURFACE GRINDER and/or extension cord is not plugged into the power source. Determine that all electrical connections have been properly made. The NEMA 6-20 Series cap and receptacle set is of a twist lock configuration and requires a twist motion to ensure a proper connection.

Improper extension cord size and capacity. Operate the SURFACE GRINDER with copper stranded, 8 AWG or larger extension cords. Improper extension cord size and capacity will result in significant heat rise and corresponding voltage and amperage drop.

Thermal protection device activated. To protect the motor against heat related damage, an automatic thermal protection switch is provided near the voltage selection switch. High operating temperatures will activate the switch and shut the motor off. After the motor has cooled to an acceptable temperature level,depress the switch to restart.

ELECTRIC MOTOR LOSES POWER

Improper extension cord size and capacity. Replace with cords meeting the required specifications.

Excessive extension cord length. Even with proper extension cord size and capacity, excessive cord length can reduce the available voltage and amperage to the motor. Measure the available voltage to the motor where the extension cord connects to the SURFACE GRINDER with a voltmeter. Reduce the extension cored length as required to achieve the minimum voltage operating specification as required by the motor manufacturer.

Insufficient available voltage and amperage at the power source. Measure the available voltage at the power source (usually a receptacle) with a voltmeter. If the available voltage is below the minimum operating specification as required by the motor manufacturer, utilize an alternative power source.

Improper motor cooling. See ELECTRIC MOTOR SERVICE.

Excessive load to the motor. See OPERATING THE SURFACE GRINDER ON THE JOBSITE.

ENGINE.

Application: DFG/G Series SURFACE GRINDERS.

ENGINE FAILS TO START

Ignition switch in OFF or cut off position. Place switch in the ON position or move throttle control lever to the ignition operational position.

Incorrect carburetor/fuel ignition system adjustment. See SERVICE section.

Air filter blocked. See SERVICE section.

Ignition wire to spark plug loose or disconnected. Reconnect.

Application: DFG/G Series SURFACE GRINDER.

Fuel supply exhausted. Refill the fuel tank.

Spark plug fouled. Replace Spark Plug. Refill the fuel tank.

ENGINE LOSES POWER

Incorrect carburetor/fuel injection adjustment. See SERVICE section.

Excessive carbon accumulation in combustion chamber. See SERVICE section.

Excessive material build-up around the cooling fins. See SERVICE section.

Application: DFG/G Series SURFACE GRINDER.

Water in fuel supply. Drain and replace fuel.

Fuel tank breather vent closed (if so equipped). Open vent.

Air filter blocked. See SERVICE section.

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 Stow Construction Equipment Parts Ordering ProceduresHere’s how to get help Page Page Operator Instructional Data Sheet Safety Precautions Safety Precautions Operation Surface Grinder MAINTENANCE, Repair and StorageSafety Precautions Application All Models AssemblyRemoving the Surface Grinder from the Pallet 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 BlockBeam Flail Cost 1 Productivity 3 Service LifeStar 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 Definitions of floor flatness and levelness Stopping the DFG/G Series Gasoline Powered Surface GrinderApplication All Models Early Age Grinding Defined Versus Random Traffic Patterns How to Define Surface RegularityTR 34 tolerances for defined traffic floors Assembly INSTRUCTIONS/OPERATIONS Preventative Maintenance Check LIST. Application All Models MAINTENANCE/SERVICEMaintenance/Service 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 Xxxxx only Not Used on Part NameRemarks Qty Description Suggested Spare PartsUnits Gasoline Engine Units Electric Motor Model 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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