Maintenance and repair – Global Machinery Company DP21 User Manual
Page 13
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Apply pressure to the feed wheel and slowly drill through
the workpiece. Don’t force the drill, allow the drill bit to do
the work.
After drilling the hole release the feed wheel and allow the
spindle to return to its original position.
Turn off the drill press.
Wood drilling
•
For maximum performance, use high speed steel bits for
wood drilling.
•
Secure the workpiece to prevent it from turning when
drilling.
•
When drilling through holes, place a block of wood behind
the workpiece to prevent ragged or splintered edges on
the back side of the hole.
Metal drilling
•
For maximum performance, use high speed steel bits for
metal or steel drilling.
•
Use a centre punch to mark the hole location on
the workpiece.
•
Maintain a speed and pressure which allows cutting
without overheating the bit. Applying too much
pressure will:
- Overheat the drill
- Wear the bearings
- Bend or burn bits
- Produce off-centre or irregular shaped holes
•
When drilling large holes in metal it is recommended to
drill with a small bit at first, then finish with a larger bit.
Also, lubricate the bit with oil to improve drilling action and
increase bit life.
Maintenance and repair
Repairs
Only an authorised service centre should replace the cordset
or effect other repairs. If the cordset is damaged or worn,
have it repaired or replaced by an authorised service centre.
Maintenance
WARNING.
Always ensure that the tool is switched off and
the plug is removed from the power point before making and
adjustments or maintenance procedures.
Cleaning
Keep the tool’s air vents
unclogged and clean at
all times.
Remove dust and dirt regularly.
Cleaning is best done with a soft
brush or a rag.
Re-lubricate all moving parts at
regular intervals.
Never use caustic agents to clean
plastic parts.
CAUTION.
Do not use cleaning agents to clean the plastic
parts of the tool. A mild detergent on a damp cloth is
recommended.
General inspection
Regularly check that all the fixing screws are tight.
They may vibrate loose over time.
If the supply cord needs replacing, the task must be carried
out by the manufacturer, the manufacturer’s agent, or an
authorised service centre in order to avoid a safety hazard.