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2. If a backing block is used to keep back of work from splintering,
it should be clamped securely in place. If a backing block is not used
with spade bits or auger bits, ease up pressure as soon as bit point
breaks through work, and complete the hole from the opposite side.
DRILLING METAL
In addition to the instruction listed under GENERAL DRILLING, the
following also apply:
1.
Use only good quality sharp high speed steel twist bits when
drilling metal.
2.
With variable speed drills, start drilling with slow speed and
gradually increase speed as drill cuts. The harder the material, the
slower the speed required. The softer the material, faster the speed.
3.
When drilling a large hole, it is easier to first drill a smaller hole
and then enlarge it to the required size.
4.
The use of a lubricant, such as oil, on the drill point helps keep
the bit cool, increases drilling action and prolongs drill bit life.
MAINTENANCE
KEEP TOOL CLEAN
Periodically blow out all air passages with compressed air. Remove
build up of grime resulting from working green or sappy wood. All
plastic parts should be cleaned with soft damp cloth. NEVER use
solvents to clean plastic parts. They could possibly dissolve or
otherwise damage the material.
CAUTION - Wear safety glasses while using compressed air.
FAILURE TO START
Should your tool fail to start, check to make sure the prongs on the
cord plug are making good contact in the outlet. Also, check for
blown fuses or open circuit breakers in the line.
BRUSH INSPECTION AND LUBRICATION
CAUTION - For your continued safety and electrical protection,
brush inspection and replacement on this tool should ONLY be
performed
by
an
AUTHORIZED
PORTER-CABLE
SERVICE
STATION or a PORTER-CABLE SERVICE CENTER.
At approximately 100 hours of use, take or send your tool to your
nearest Authorized Porter-Cable Service Station to be thoroughly
cleaned and inspected; worn parts replaced, when necessary; re¬
lubricated with fresh lubricant, if required; reassembled with new
brushes; and performance tested.
Any loss of power before the above maintenance check may indicate
the need for immediate servicing of your tool. DO NOT CONTINUE
TO OPERATE TOOL UNDER THIS CONDITION. If proper operating
voltage is present, return your tool to the Service Station for
immediate service.
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