Grizzly G7298, G7299 instruction manual Troubleshooting, Symptom Possible Cause Corrective Action

Page 19

TROUBLESHOOTING

This section covers the most common problems encountered in grinding and what to do about them. Do not make any adjustments until grinder is unplugged and moving parts have come to a complete stop.

SYMPTOM

POSSIBLE CAUSE

CORRECTIVE ACTION

 

 

 

 

 

Motor will not start.

1.

Low voltage.

1.

Check power line for proper voltage.

 

2.

Open circuit in motor or loose

2.

Inspect all lead connections on motor for loose or open connec-

 

 

connections.

 

tions.

 

 

 

 

 

Motor will not start; fuses or

1.

Short circuit in line cord or plug.

1.

Inspect cord or plug for damaged insulation and shorted wires.

circuit breakers blow.

2.

Short circuit in motor or loose

2.

Inspect all connections on motor for loose or shorted terminals or

 

 

connections.

 

worn insulation.

 

3.

Incorrect fuses or circuit break-

3.

Install correct fuses or circuit breakers.

 

 

ers in power line.

 

 

 

 

 

 

 

Motor overheats.

1.

Motor overloaded.

1.

Reduce load on motor.

 

 

 

 

 

Motor stalls (resulting in

1.

Short circuit in motor or loose

1.

Inspect connections on motor for loose or shorted terminals or

blown fuses or tripped cir-

 

connections.

 

worn insulation.

cuit).

2.

Low voltage.

2

Correct the low voltage conditions.

 

3.

Incorrect fuses or circuit breakers

3.

Install correct fuses or circuit breakers.

 

 

in power line.

 

 

 

4.

Motor overloaded.

4.

Reduce load on motor.

 

 

 

 

 

Machine slows when oper-

1.

Depth of cut too great.

1.

Slow down the rate of movement of the workpiece into wheel.

ating.

 

 

 

 

 

 

 

 

 

Wavy condition on surface

1.

Machine vibrating.

1.

Make sure machine is securely mounted on a solid surface.

of workpiece.

2.

Workpiece not being held firmly.

2.

Use a holding device to firmly retain the workpiece.

 

3.

Wheel face uneven.

3.

Dress the grinding wheel.

 

4.

Wheel is too hard.

4.

Use softer wheel, or reduce the feed rate.

 

 

 

 

 

Lines on surface of work-

1.

Impurity on wheel surface.

1.

Dress the grinding wheel.

piece.

2.

Workpiece not being held tightly.

2.

Use a holding device to firmly retain the workpiece.

 

 

 

 

 

Burning spots or cracks in

1.

Improper type of grinding wheel.

1.

Try a wheel which is softer style or a coarser grit.

the workpiece.

2.

Improper feed rate.

2.

Slow down the rate of movement of the workpiece into wheel.

 

3.

Coolant required.

3.

Add optional coolant system or introduce coolant by hand.

 

 

 

 

 

Wheel dulls quickly, grit falls

1.

Depth of cut too great.

1.

Slow down the rate of movement of the workpiece into wheel.

off.

2.

Wheel is too soft.

2.

Wheel too soft for the material being ground, select harder bond.

 

3.

Wheel diameter too small.

3.

Replace the wheel.

 

4.

Bad wheel dress.

4.

Dress the wheel.

 

5.

Defective wheel bonding.

5.

Consult manufacturer of grinding wheel.

 

 

 

 

 

Wheel clogs and workpiece

1.

Wheel is too hard.

1.

Wheel too hard for the material being ground, select softer bond.

shows burn marks.

2.

Feed rate too slow.

2.

Increase the rate of movement of the workpiece into wheel.

 

3.

Bad wheel dress.

3.

Dress the wheel.

 

4.

Coolant required.

4.

Add optional coolant system or introduce coolant by hand.

 

 

 

 

 

!

Disconnect power to the machine when perform- ing any maintenance, assembly or adjust- ments. Failure to do this may result in serious personal injury.

H4378/H4379 Slimline Bench Grinder

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Contents Model H4378/H4379 Slimline Bench GrinderPage Table Of Contents Safety Instructions For Power Tools SafetyLength AMP Rating Always Wear EYE Protection Additional Safety Instructions For GrindersGrounding Circuit Requirements110V Operation Extension CordsCommentary IntroductionUnpacking AssemblyPiece Inventory Eye Shields Mounting Tool RestsTest Run OperationsHere are some tips to keep in mind while grinding Safe Grinding Wheel CareHere are some tips to help you avoid breaking the wheel Prefix Abrasive Grit Grade Bond Wheel SelectionTo perform a Ring Test Wheel InspectionWheel Mounting Disconnect the grinder from the power supplyGrinding Wheels MaintenanceGeneral LubricationDate Approximate Hours Of Use Maintenance Performed Closure Symptom Possible Cause Corrective Action TroubleshootingFeatures Overall DimensionsMotor Model H4379 Slimline Bench Grinder 2827 Model H4378 Parts Warranty and Returns Warranty Card BOX BELLINGHAM, WA Grizzly INDUSTRIAL, INC

G7298, G7299 specifications

Grizzly G7299 and G7298 are both remarkable additions to the lineup of woodworking tools designed for professionals and creators. These models stand out due to their robust features and advanced technologies, engineered to enhance the efficiency and precision of various woodworking tasks.

The Grizzly G7299 is a 9" x 19" variable-speed metal cutting bandsaw that offers exceptional versatility. One of its main features is the adjustable blade speed, with options ranging from 80 to 280 FPM, allowing users to tailor the cutting speed according to the material being processed. The powerful 1 HP motor is another highlight, providing ample power for cutting through tough metals with ease. Equally, the G7299 is equipped with an easy-to-read digital display to monitor speed settings, enhancing user control.

For added convenience, the G7299 includes a large cast iron table which provides stability during operation. The table is also adjustable, enabling users to make angled cuts with precision. The built-in work light illuminates the cutting area, ensuring that users can see clearly even in low-light conditions. Safety is a priority with features like a blade guard and a quick-release tension mechanism for easy blade changes.

On the other hand, the Grizzly G7298 brings its own set of advantages as a high-performance 10" table saw. This model features a powerful 2 HP motor and a 30" rip capacity, making it suitable for larger projects. The G7298’s rack and pinion fence system ensures accurate and smooth adjustments, allowing users to achieve precise cuts consistently.

Additionally, the G7298 boasts a sturdy cast iron tabletop, which minimizes vibration and improves stability, thereby enhancing the quality of cuts. The integrated dust collection port helps maintain cleanliness in the workspace, conveniently connecting to most standard shop vacuums.

Both models are built with durability in mind, constructed from high-quality materials suited for heavy-duty use. They appeal to both hobbyists and professional woodworkers alike due to their reliability and performance. The Grizzly G7299 and G7298 are perfect examples of how modern technology and engineering come together to fulfill the needs of today’s woodworking enthusiasts, ensuring that every project is completed with precision and ease.
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