Silverline 612519 Manual De Instrucciones página 7

5. Check the belt runs evenly without moving to the left or right as it runs. Make
adjustments to the Upper Roller Tensioner if necessary. A small limiter screw just
above the Belt Tensioner (3) controls how much the roller drops on the right side
Note: Overall belt tension is controlled by the Belt Tensioner. Adjustment
can be made by applying more or less tension to the spring by adjusting the
height of the large nut. This should not be necessary in normal use but may be
necessary if the belt is slipping or the belt is excessively tensioned.
Pre-operational checks
• Always check that all parts or attachments are secure, and that
rotating parts will not contact guards or machine case
Operation
WARNING: Always wear suitable personal protective equipment, including
eye, hearing and respiratory protection, when operating this machine.
WARNING: Be aware that the cast metal motor housing may get hot during use.
WARNING: This tool is only suitable for one operator at a time and is
designed so that a load is applied to one side only at a time.
Duty cycle: Do not exceed a maximum operating time of 30 minutes in
every hour. It is recommended to keep to an operating time of no more than
10 minutes to reduce risk of damage to the tool from over-heating.
IMPORTANT: Fine particles of dust are created when grinding and sanding, some particles should
not be inhaled or contact skin plus there is also the risk of fine metal particles damaging electrical
tools if they enter vents. It is recommended dust extraction is used in the workshop where this
tool is fitted. If this is not possible, regularly clean and vacuum the work area around the tool.
Switching on and off
Note: Do not switch the machine on or off when under load. Always allow the motor to reach
its full speed before applying a load, and to stop completely before leaving unattended.
• To switch the machine on, press the 'I' on the On/Off Switch (11)
• To switch the machine off, press the 'O' on the On/Off Switch
Note: The higher the number on the dial the faster the spindle rotates.
Grinding
• DO NOT push the workpiece into the grinding wheel as you grind causing the grinding wheel to
slow. Instead allow the grinding wheel to maintain full speed and apply very minimal pressure
• DO NOT use grinding wheels that are damaged or have worn
down more than 25% from their original size
• Always hold work against the Tool Rest (16) and grip with both hands. Position
yourself so you have a comfortable grip on the workpiece without being
excessively close to the grinder. It is critical your clothes have no loose strands of
material especially on your arms and close to your hands that could be caught
by the grinding wheel forcing your hand into the grinding mechanism
• DO NOT attempt to work on material that is too small to grip securely
• Always refer to wheel manufacturer's literature before use. Check that
the wheel is suitable for the material that you intend to work
• Metal grinding may produce sparks especially if the Spark Arrestor (21) or
Tool Rest is incorrectly fitted. Ensure that you are properly protected, and
that any flammable materials are removed from the work area
• When grinding, the workpiece will quickly become hot. It may be necessary to quench
the work in water to prevent heat damage. The fine-grade grinding wheel will produce
less heat and may be safer to use for some materials that are easily heat damaged
• Some materials may contain trace amount of toxic materials. If you are unsure
of the composition of the workpiece, it is recommended to remove grinding
dust frequently and always wear suitable respiratory protection
• Metallic dust can damage other tools if allowed to accumulate
by vents and be drawn in when the tool is operated
• When grinding, always keep the workpiece moving across the wheel
surface to prevent uneven wear of the grinding wheel
• Use the correct the type of grinding wheel. A coarse grit can be used to take off a lot of
material more quickly, a fine grit removes material more slowly and gives a finer finish
• When grinding has finished for the session, remove dust and vacuum the work area, and the tool
Sanding
IMPORTANT: The belt sander has two sanding positions: one is against the flat Belt Plate
(5) and the other is against the larger lower belt roller. Do not sand above the Belt Plate or
just above the roller where there is no backing surface. This may cause the belt to break.
240W Bench Grinder & Belt Sander
Accessories
• A range of accessories and consumables including an 80 grit sanding belt,
coarse grit grinding wheel and fine grit grinding wheel is available from your
Silverline stockist. Spare parts can be obtained from toolsparesonline.com
Maintenance
WARNING: ALWAYS disconnect from the power supply before
carrying out any inspection, maintenance or cleaning.
Removing and fitting a grinding wheel
Removing
1. Re-position or remove the Spark Arrestor (21) and Tool Rest (16) if necessary
2. Remove the Wheel Guard (17) by removing the three Wheel
Guard Nuts (14) and Wheel Guard Bolts (15)
3. Remove the Belt Access Cover (4) by loosening the three Belt Plate Screws (7) on
the right side and sliding the Belt Access Cover up and then off the tool
4. Use a spanner on the nut of the main belt roller shown on the left
(Image A) to prevent the motor spindle from turning
5. Unscrew the Grinding Wheel (18) nut (Fig. V) by turning CLOCKWISE with a spanner
6. Remove the Grinding Wheel flange ensuring that any additional
washers are retained for the new Grinding Wheel
7. Remove the old Grinding Wheel and clean the spindle and
parts ready for the new Grinding Wheel
Fitting
1. Check the condition of the new Grinding Wheel (18), making sure it is not damaged
or cracked. Also ensure it is of the correct required grit before fitting
2. Fit the new Grinding Wheel on the spindle ensuring any required washers are refitted
3. Refit the Grinding Wheel flange and Grinding Wheel nut and tighten ANTI-CLOCKWISE while
preventing the motor spindle from turning with a spanner attached to the main belt roller nut
4. Re-assemble the Wheel Guard (17), Spark Arrestor (21) and
Tool Rest (16) and refit the Belt Access Cover (4)
5. Before use, run the Grinding Wheel for a minimum of 1 minute to ensure it operates normally
Note: During re-assembly, do not over-tighten the Grinding Wheel nut. Doing
so will make it difficult to remove when disassembled at a later date.
Dressing a wheel
Over time the Grinding Wheel (18) surface may become uneven, pitted and unbalanced
and will not work satisfactorily. A dressing tool should be used to restore the wheel
surface to good working condition. A suitable tool is Silverline Diamond Wheel
Dresser. Use the diamond grit head to clean the surface of the wheel. Do not over-use
a wheel dresser. Only use when necessary as it accelerates wear of the wheel.
General inspection
• Regularly check that all the fixing screws are tight
• Inspect the supply cord of the tool, prior to each use, for damage or wear.
Repairs should be carried out by an authorised Silverline service centre.
This advice also applies to extension cords used with this tool
Cleaning
• Keep your tool clean at all times. Dirt and dust will cause internal parts to wear quickly, and
shorten the machine's service life. Clean the body of your machine with a soft brush, or dry
cloth. If available, use clean, dry, compressed air to blow through the ventilation holes
• Clean the tool casing with a soft damp cloth using a mild detergent.
Do not use alcohol, petrol or strong cleaning agents
• Never use caustic agents to clean plastic parts
Storage
• Store this tool carefully in a secure, dry place out of the reach of children
Disposal
Always adhere to national regulations when disposing of power tools
that are no longer functional and are not viable for repair.
• Do not dispose of power tools, or other waste electrical and
electronic equipment (WEEE), with household waste
• Contact your local waste disposal authority for information
on the correct way to dispose of power tools
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