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Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com
optimum cutting speed is achieved whilst maintaining a MODERATE
pressure ONLY. NEVER force the drill bit into the work. This will
overheat the tip and cause it to dull very quickly.
• To prevent the drill bit from slipping when starting to drill a hole in
metal, use a centre punch to make an indentation at the start point.
• When drilling in wood, clamp a piece of scrap wood to the
underside of the material to avoid splintering.
• Always drill directly in line with the bit. Do not use sideways
movement as this may damage the drill or cause the bit to break.
• Large holes should be drilled with wood augers, flat wood bits or
hole saws.
MAINTENANCE
Before commencing any maintenance procedures, always ensure the drill is
isolated from the electrical supply by switching off and removing the plug
from the socket.
BEFORE USE
1. Ensure all fixing screws remain tight to ensure the drill is in safe working
condition.
2. Inspect the power cable to ensure it is sound and free from cracks, bare
wires etc.
CLEANING
1. Ensure all air ventilation slots are clear of blockages, (use compressed air to
clean the machine if possible).
2. After use, clean all dust and swarf from the drill.
3. Clean the exterior of the drill with a soft cleaning cloth. Never use any
chemicals or harsh abrasives to clean the tool.
• Avoid using solvents when cleaning plastic parts, most plastics are
susceptible to damage from the various types of commercial
solvents.
GENERAL MAINTENANCE
• All bearings etc, in this tool are lubricated with a sufficient amount of
high grade lubricant for the tools lifetime under normal operating
conditions, therefore no further lubrication is necessary.
• Refer to your CLARKE dealer if internal maintenance is required.
CHD850 Hammer Drill rev 4.fm Page 11 Monday, February 9, 2015 10:47 AM
