Product Familiarisation - Silverline 127569 Manual De Usuario

GB

Product Familiarisation

1 On/Off Switch
2 Cover Screws
3 Adjustment Dial
4 Drill Bit Guide Holes
5 Rotation Indicator Window
Intended Use
Electric drill bit sharpener with concealed grinding wheel, for sharpening
HSS and carbon steel twist drill bits.
Unpacking Your Tool
• Carefully unpack and inspect your tool. Familiarise yourself with all its
features and functions
• Ensure that all parts of the tool are present and in good condition. If
any parts are missing or damaged, have such parts replaced before
attempting to use this tool
Before Use
WARNING: ALWAYS handle drill bits with care and avoid touching the
cutting edges. Burrs and sharp edges may cause deep skin cuts. Drill bits
become hot during sharpening, and can cause severe burns.
WARNING: This tool is suitable for sharpening twist drill bits ONLY. Masonry,
lip and spur, auger, flat and step drill bits and router cutters can NOT be
sharpened with this device.
• Place the sharpener on a sturdy, even surface and connect the plug to
the power supply
• Clean drill bits prior to sharpening, to remove dirt, grease and cutting
fluids. Drill bits must be completely dry
Operation
WARNING: ALWAYS use adequate protective equipment, including eye
protection, respiratory and hearing protection, as well as suitable gloves,
when working with this tool.
Switching on and off
1. Connect the plug to the power supply
2. Toggle the On/Off Switch (1) to the 'I' position, to start the machine
3. Toggle the On/Off Switch to the 'O' position, to stop the machine
WARNING: Always disconnect from the power supply after use.
Duty cycle
WARNING: This product has a duty cycle of 20%.
• After every 2 minutes of use, it must be allowed to cool down for 8
minutes, before continuing with another max. 2 minutes continuous use
• The product is equipped with a thermal cut-out device to protect the
motor
• If the tool cuts out, the duty cycle has been exceeded. Turn off the tool
and allow the motor to cool down fully. You will then be able to proceed,
using the tool in accordance with the 20% duty cycle
6
Sharpening drill bits
WARNING: The drill bit becomes very hot whilst sharpening: DO NOT touch
the tip.
1. Match the size of the drill bit with one of the holes in the head of the
sharpener
2. Switch the machine on (see
'Switching on and off')
3. Insert the drill bit into the
appropriate hole (see Fig. A)
4. Exert slight downward pressure
on to the drill bit, and move it
back and forth by about 20° for a
duration of about 20 seconds
5. Remove the drill bit from the
machine, and switch the device off
6. Examine the drill bit, to check
whether it has become too
hot during sharpening (see
'Troubleshooting'). Consider
adjusting the grinding wheel
height, if the sharpening result is
not satisfactory (see 'Adjusting
the grinding wheel')
7. Repeat steps 1-6 to sharpen the
other side of the bit. Use the same
technique, downward pressure
and amount of time to achieve an
even sharpening result
8. Examine the drill bit and ensure
that both cutting edges are evenly
proportioned and shaped, the point
is centered and that the trailing
edge is free of burrs (see Fig. B)
9. Repeat steps 1-8 as required
Note: Use a bench grinder first, to
roughly shape the drill bit, if sharpening
a broken-off or very dull bit.
Adjusting the grinding wheel
Note: Depending on the drill bit you may need to adjust the height of the
grinding wheel.
1. Turn the Adjustment Dial (3) clockwise to raise the grinding wheel
• Raising the grinding wheel will lead to a more aggressive cutting action
• When sharpening short drill bits, it may be necessary to raise the
grinding wheel
2. Turn the Adjustment Dial (3) anticlockwise to lower the grinding wheel
• Lowering the grinding wheel will lead to a finer ground edge
• Fine grinding may take longer and can require additional repetitions
• When sharpening long drill bits, it may be necessary to lower the grinding
wheel
Accessories
• Replacement grinding wheels (product code 128975) are available from
your Silverline stockist
Maintenance
WARNING: ALWAYS ensure that the tool is disconnected from the power
supply, before cleaning, changing accessories, or carrying out maintenance.
General inspection
• Regularly check that all the fixing screws are tight. They may vibrate
loose over time
• 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
Fig. A
Rotate back
and forth
about 20˚
Fig. B
Cutting Edge
Centre Point
Trailing Edge