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Page 17 of 21 

 

Failure 

Possible Cause 

Corrective Action 

Lines on surface 
of workpiece. 

Impurity on surface of wheel. 

Dress the grinding wheel. 

Workpiece not being held tightly. 

Use a holding device to more firmly 
retain the workpiece. 

Burning spots or 
cracks in the 
workpiece. 

Improper type of grinding wheel. 

Try wheels with a softer bond or 
coarser grit. 

Improper feed rate. 

Slow down the rate at which the 
workpiece is fed into the wheel. 

Coolant required. 

Add coolant. 

Wheel dulls 
quickly or grit 
falls off. 

Feed rate is too aggressive. 

Decrease feed rate of workpiece into 
grinding wheel. 

Wheel is soft. 

Select a grinding wheel with a harder 
bond of material. 

Bad wheel dressing. 

Dress the wheel. 

Defective wheel bonding. 

DO NOT USE. 

Wheel clogs and 
workpiece shows 
burn marks. 

Wheel is too hard. 

Select a grinding wheel with a softer 
bond of material. 

Feed rate is too slow. 

Increase the feed rate of the workpiece 
into the grinding wheel. 

Bad wheel dressing. 

Dress the wheel. 

Coolant required. 

Add coolant. 

 

Содержание 61457

Страница 1: ...top Grinder Owner s Manual WARNING Read carefully and understand all ASSEMBLY AND OPERATION INSTRUCTIONS before operating Failure to follow the safety rules and other basic safety precautions may resu...

Страница 2: ...at you read the entire manual to become familiar with this product before you begin using it This benchtop grinder is designed for certain applications only Northern Tool and Equipment is not responsi...

Страница 3: ...afety Information 4 Specific Operation Warnings 6 Grounding 6 Extension Cords 7 Main Parts of Benchtop Grinder 9 Assembly Instructions 9 Before Each Use 12 Operating Instructions 13 After Each Use 14...

Страница 4: ...aution when using this tool Always be aware of the environment and ensure that the tool is used in a safe and responsible manner Do not allow persons to operate or assemble the product until they have...

Страница 5: ...hair clothing and gloves away from moving parts Loose clothes jewelry or long hair can be caught in moving parts Air vents on the tool often cover moving parts and should be avoided Wear the proper pe...

Страница 6: ...e protection Only use accessories rated at least equal to the maximum speed marked on the tool Do not modify the tool in any way Do not wear gloves jewelry or loose clothing Do not use a cracked or ch...

Страница 7: ...m and must never be attached to an electrically live terminal Your tool must be plugged into an appropriate outlet properly installed and grounded in accordance with all codes and ordinances The plug...

Страница 8: ...nimum extension cord wire size is shown in the following table Minimum Wire Size Of Extension Cords Nameplate AMPS Cord Length 25 50 100 150 0 6 18 AWG 16 AWG 16 AWG 14 AWG 6 10 18 AWG 16 AWG 14 AWG 1...

Страница 9: ...he tool off and disconnect the grinder from the power outlet before installing or changing the grinding wheel Always make sure your benchtop grinder is securely mounted to a workbench Failure to do so...

Страница 10: ...r to Fig 2 to ensure that you install them correctly Installing the Eye Shields Note There is a left and a right eye shield mounting rod Fig 3 is for the right wheel guard as you face the front of the...

Страница 11: ...gh to stay in place Always position the eye shields between your eyes and the grinding wheel or other accessory being used Mounting the Grinder to the Workbench Before attempting to use this grinder i...

Страница 12: ...tighten further under normal operation Before Each Use WARNING Always check for damaged or worn out parts before using the benchtop grinder The benchtop grinder needs to be bolted to the work surface...

Страница 13: ...s use the grinder s wheel guards and safety shields ADJUST DISTANCE BETWEEN WHEEL AND TOOL REST to maintain 1 16 in or less separation as the diameter of the wheel decreases with use The value of sepa...

Страница 14: ...t will be very hot Keep children away from the benchtop grinder Maintain the Grinding Wheel Check the surface of the grinding wheel for flatness If the surface is uneven or grooved dress the wheel bac...

Страница 15: ...t is based on a normal operation schedule Maintenance Interval Maintenance Point Daily before operating 1 Examine the general condition of the bench grinder 2 Check the power cord 3 Check the wheels f...

Страница 16: ...d technician repair unit Motor overheats Motor overloaded Reduce load on motor Extension cord is too long and of insufficient gauge weight Use an extension cord of appropriate gauge and length or plug...

Страница 17: ...ich the workpiece is fed into the wheel Coolant required Add coolant Wheel dulls quickly or grit falls off Feed rate is too aggressive Decrease feed rate of workpiece into grinding wheel Wheel is soft...

Страница 18: ...Page 18 of 21 Parts Diagram...

Страница 19: ...29 Base Plate 1 30 Condenser 1 31 Screw 1 32 Pad 1 33 Base 1 34 Switch 1 35 Right Adjustable Rest 1 36 Screw 1 37 Mounting Plate 1 Replacement Parts For replacement parts and technical questions pleas...

Страница 20: ...claim contact Us at 1 800 222 5381 identify the product by make and model number and follow the claim instructions that will be provided The product and the purchase receipt must be provided to Us in...

Страница 21: ...Page 21 of 21 Distributed by Northern Tool Equipment Company Inc Burnsville Minnesota 55306 www northerntool com Made in China...

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