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JEFBGS06

150mm Bench Grinder

8. Troubleshooting Guide

Problem / Symptom 

Cause

Action

Motor will not start. 

1.

 Low voltage

2. 

Open circuit in motor or loose 

connections

3.

 Blown fuse or circuit breaker

1.

 Check power source / ensure correct 

voltage is used

2.

 Inspect all cable connections on the 

 

motor for loose or open connections. Send 
for servicing. 

3.

 Ensure that circuit breaker and fuse are 

compatible with power rating stated on 
nameplate. Send for servicing.  

Motor will not start - fuses or 

 

circuit breakers tripping or 

 

blowing. 

1.

 Short circuit in line, cord or 

plug. 

2. 

Short circuit in motor or loose 

connections. 

3. 

Incorrect fuses or circuit 

breakers in the power line.  

1.

 Inspect the cord or plug for damaged 

insulation and shorted wires. 

2.

 Inspect all connections on the motor 

for loose or shorted terminals and/or worn 
insulation. 

3. 

Install correct fuses or circuit breakers. 

Move the tool onto a compatible circuit. 

Motor overheating. 

1.

 Motor overloaded. 

2. 

Extension cable to long or not 

heavy enough. 

1.

 Reduce load on the motor.

2.

 Use a compatible extension cable for the 

machine rating. 

Motor stalling (resulting in blown 
fuses or tripping).  

1.

 Short circuit in line, cord or 

plug. 

2. 

Short circuit in motor or loose 

connections. 

3. 

Incorrect fuses or circuit 

breakers in the power line. 

4.

 Motor overloaded.  

1.

 Check power source / ensure correct 

voltage is used

2.

 Inspect all cable connections on the 

 

motor for loose or open connections. Send 
for servicing. 

3.

 Ensure that circuit breaker and fuse are 

compatible with power rating stated on 
nameplate. Send for servicing. 

4.

 Reduce load on the motor. 

Machine slows while operating. 

1.

 Feed rate is too high

1.

 Reduce the feed rate to the grinding 

wheel. 

JEFBGS06

150mm Bench Grinder

8. Troubleshooting Guide (continued) 

Problem / Symptom 

Cause

Action

Wavy patterning on the surface of 
the workpiece.

1.

 Machine vibrating.

2.

 Workpiece not being held 

firmly.

3.

 Uneven wheel face.

4.

 Wheel is too hard.

1.

 Ensure that the wheel is securely 

 

mounted on a solid surface. 

2.

 Use a holding device to retain the 

workpiece firmly.

3.

 Dress the grinding wheel.  

4.

 Use a softer wheel or reduce the feed 

rate. 

Lines on the surface of the 

 

workpiece.

1.

 Impurity on the wheel surface. 

2.

 Workpiece not being held 

firmly. 

1.

 Dress/clean  the grinding wheel.  

2.

 Use a softer wheel or reduce the feed 

rate. 

Burning spots or cracks on the 
workpiece. 
Wheel is dull / clogged. 

1.

 Incorrect grinding wheel.  

2.

 Incorrect feed rate. 

3.

 Coolant required.

1.

 Use wheel with softer bond or coarser 

grit. 

2.

 Reduce feed rate. 

3.

 Use coolant more regularly. 

4. Dress / clean / replace the wheel. 

9.

10.

Содержание JEFBGS06

Страница 1: ...150mm Bench Grinder 370W Hp 2850rpm 230V 50Hz USER MANUAL www jeffersontools co uk JEFBGS06...

Страница 2: ...nvironments Do not use in damp conditions to avoid electric shock Keep children and bystanders out of the work area when the tool is in operation This equipment can generate sparks when in use so it i...

Страница 3: ...es plugs are in good condition before use Ensure that the equipment is grounded before use Grounding helps to ensure that the current will take the path of least resistance in the event of an electric...

Страница 4: ...Bench Grinder 5 Assembly Instructions continued C Installing or Changing the Grinding Wheel 1 Use a screwdriver to loosen the wheel cover screws and push anti clockwise to remove the wheel cover 2 Fit...

Страница 5: ...ace of the grinding wheel Grinding continuously on the same spot on the wheel will result in excessive wearing and grooving on the grinding surface This in turn can lead to a greater risk of wheel dam...

Страница 6: ...rt circuit in motor or loose connections 3 Incorrect fuses or circuit breakers in the power line 4 Motor overloaded 1 Check power source ensure correct voltage is used 2 Inspect all cable connections...

Страница 7: ...Hex Nut M6x14 2 19 Flat Washer D6 2 20 Lock Block 2 21 Left Eyeshield Mount Rod 1 22 Eyeshield Plate Assy 2 23 Flat Washer D35 1 24 Bearing 2 25 Stator 1 26 Rotor 1 27 Wire With Plug 1 28 Right Spark...

Страница 8: ...s Herons Way Chester Business Park Chester United Kingdom CH49 QR We declare that the models listed below conform with the directives and standards listed below Manufacturers Responsible Representativ...

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